[Lift] broken app

2009-11-08 Thread Oliver Lambert
Hi

Over the last couple of days I have been getting the following error on Lift
1.0 using scala 2.7.3 when I try to deploy an application to a Glassfish (or
Tomcat) server (Jetty works ok)

: Exception starting filter LiftFilter
java.lang.IncompatibleClassChangeError: Class scala.List$$anon$1 does not
implement the requested interface scala.Seq$Projection
at net.liftweb.util.ListHelpers$class.first(ListHelpers.scala:50)
at net.liftweb.util.Helpers$.first(Helpers.scala:29)
at net.liftweb.util.Props$.init(Props.scala:151)
at net.liftweb.util.Props$.clinit(Props.scala)
at net.liftweb.util.LogBoot$.findTheFile$1(Log.scala:115)
at net.liftweb.util.LogBoot$._log4JSetup(Log.scala:118)
at net.liftweb.util.LogBoot$$anonfun$2.apply(Log.scala:96)
at net.liftweb.util.LogBoot$$anonfun$2.apply(Log.scala:96)
at net.liftweb.util.LogBoot$.checkConfig(Log.scala:94)
at
net.liftweb.util.LogBoot$.net$liftweb$util$LogBoot$$_logger(Log.scala:140)
at net.liftweb.util.LogBoot$$anonfun$3.apply(Log.scala:142)
at net.liftweb.util.LogBoot$$anonfun$3.apply(Log.scala:142)
at net.liftweb.http.LiftRules$.init(LiftRules.scala:559)
at net.liftweb.http.LiftRules$.clinit(LiftRules.scala)
at net.liftweb.http.LiftFilter.init(LiftServlet.scala:546)
...


I think the application was deploying OK earlier in the week. Any ideas???

cheers
Oliver

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[Lift] Lift job

2009-09-24 Thread Oliver Lambert
Hi all,
The company I work for, Paycorp, is based in Sydney Australia and has a job
with a significant Lift / Scala component. The job description is posted on
http://www.scalacareers.com/

cheers
Oliver

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[Lift] Re: You are not banned from this group!!

2009-09-24 Thread Oliver Lambert
My son was born a week ago, with a heart defect that has just been operated
on - I've been biting my nails for months and haven't felt like
communicating or working. Things are starting to look good for him so maybe
Im back.
cheers
Oliver

On Thu, Sep 24, 2009 at 12:08 PM, Charles F. Munat c...@munat.com wrote:


 Funny, I was just wondering what happened to you maybe two days ago. Are
 you back, or just checking in?

 Chas.

 Oliver Lambert wrote:
 
 
  On Tue, Sep 22, 2009 at 7:21 AM, David Pollak
  feeder.of.the.be...@gmail.com mailto:feeder.of.the.be...@gmail.com
  wrote:
 
 
  I will gladly buy beer/coffee/food for anyone who gets such a
  notice.  I sincerely apologize for any problems this is causing.
 
 
  Can you send me such a notice, I'd like a beer!
  Oh, and I've been away for a while, its nice to see the lift mailing
  list is going so strong.
 
  Oliver
 
  

 


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[Lift] Re: You are not banned from this group!!

2009-09-23 Thread Oliver Lambert
On Tue, Sep 22, 2009 at 7:21 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:


 I will gladly buy beer/coffee/food for anyone who gets such a notice.  I
 sincerely apologize for any problems this is causing.


Can you send me such a notice, I'd like a beer!
Oh, and I've been away for a while, its nice to see the lift mailing list is
going so strong.

Oliver

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[Lift] Re: Including jars into a liftweb project

2009-06-26 Thread Oliver Lambert
If I have an application thats not in a Maven repository, I usually put it
in my local (or company) repository - for instance adding functionaljava.jar
mvn install:install-file -DgroupId=org.other -DartifactId=functionaljava
-Dversion=2.17 -Dpackaging=jar -Dfile=functionaljava.jar -DgeneratePom=true

But, before you do this, as suggested
below, you might want to google for the application
(eg ibiblio functionaljava) to make sure its not in a maven repository.

On Fri, Jun 26, 2009 at 6:16 PM, Timothy Perrett timo...@getintheloop.euwrote:


 To clarify - you only need that system path if its a JAR not in a
 maven repository anywhere. What JAR are you trying to add?

 Cheers, Tim

 On Jun 26, 9:01 am, Caoyuan dcaoy...@gmail.com wrote:
  On Fri, Jun 26, 2009 at 3:51 PM, Jeppe Nejsum Madsenje...@ingolfs.dk
 wrote:
 
   On 26 Jun 2009, fbettag wrote:
 
   Hey guys,
 
   i was wondering how (and where) i have to put jars in my liftweb
   project to get them included. i know it's a beginners question, but
   i've been playing around all night and i couldn't get it to work.
 
   Normally, you would put jars in the WEB-INF/lib folder and they will be
   picked up by the servlet container
 
   They need to be available at compile time too...
 
   /Jeppe
 
  Usually, jar files should be put under maven's dependency management,
  but you can try to add them by adding something like the following to
  pom.xml
 
  !-- local dependency --
  dependency
  groupIdcom.xxx/groupId
  artifactIdcom.xxx.xxx/artifactId
  version4.7.1/version
  scopesystem/scope
 
 systemPath${basedir}/src/main/webapp/WEB-INF/lib/x-4.7.1.jar/systemP
 ath
  /dependency
 
 
 
 
 


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[Lift] Re: New mapper class: MappedEnumString

2009-06-25 Thread Oliver Lambert
On Thu, Jun 25, 2009 at 10:49 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote:


 On Thu, Jun 25, 2009 at 1:12 AM, Oliver Lambert olambo...@gmail.com
 wrote:
 
  Looks very nice.
 
  One thing I'm wondering, what if I wanted the displayed value outside of
 the mapper, such as TestTypes.Item1.displayValue. Would you use an implicit
 conversion to provide this or is the
  display value conceptually always part of a mapper object.

 Good question :-) I'm still using CRUDify generated views while
 prototyping, but will probably need some more sophisticated layouts at
 some point. Don't yet know if the display value will come from the
 mapper object or the underlying enum.

  I have a rough implementation called EnumWithDescription, that wraps (not
 extends) an Enumeration
  and provides a description method on the enumeration value without using
 an implicit. I'm wondering
  if it might be useful to combine your approach and mine?

 Sure. It might also be possible to make the original MappedEnum a bit
 more flexible instead (as Derek suggested earlier). My class is
 basically just a copy with very few modifications to handle the db
 value. I just haven't got the Scala knowledge yet to easily see how
 the interface should be and I needed to nail the db schema :-)


No this isn't what I'm suggesting, I don't think MappedEnum should be made
flexible.
I was thinking perhaps your class could work with EnumWithDescription as
shown below, which
extends Enumeration#Values to include a description.

/*
 A wrapper arround a Scala Enumeration Value that has a name, description
for each object
 */
trait ValueWithDescription  {
def description: String
def name: String
}

abstract class EnumWithDescription  {
type Value = enum.Value with ValueWithDescription

private var _values: List[Value] = Nil
def values = _values

// possibly not a good idea using this directly
val enum = new Enumeration {
def Value(inName: String, inDescription: String): Value with
ValueWithDescription = {
new Val(nextId, inName) with ValueWithDescription {
def description = inDescription
def name = inName
}
}
}

def Value(name: String, description: String): Value = {
val value = enum.Value(name, description)
_values = _values ::: List(value)  // build in order
value
}

def Value(name: String): Value = Value(name, name)

def valueOf(name: String) = values find (_.name == name)

def nameDescriptionList = values map(x = (x.name, x.description) )

}






 /Jeppe

 


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[Lift] Re: New mapper class: MappedEnumString

2009-06-24 Thread Oliver Lambert
Looks very nice.

One thing I'm wondering, what if I wanted the displayed value outside of the
mapper, such as TestTypes.Item1.displayValue. Would you use an implicit
conversion to provide this or is the
display value conceptually always part of a mapper object.

I have a rough implementation called EnumWithDescription, that wraps (not
extends) an Enumeration
and provides a description method on the enumeration value without using an
implicit. I'm wondering
if it might be useful to combine your approach and mine?

cheers
Oliver

On Thu, Jun 25, 2009 at 6:39 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote:

 Hi,

 A while ago, I asked if it was possible to use something like MappedEnum
 and have some sensible values inserted into the database instead of
 integers.

 I got the feeling this was not the case, so I've created MappedEnumString
 (attached) which maps Enumerations into string values.

 Example:
   object TestTypes extends Enumeration {
  val Unknown = new Val(0,??)
  val Item1 = new Val(XX)
  val Item2 = new Val(YY)
   }

  object test extends MappedEnumString(this, TestTypes, 2)

 This will store the values, ??, XX or YY in the db. For display
 purposes, it will by default lookup the resource values TestTypes.??,
 TestTypes.XX, TestTypes.YY

 You can also calculate the displayed values:

object test2 extends MappedEnumString(this, TestTypes, 2) {
override def _valueToDisplayString(v:Enumeration#Value) = v match {
case TestTypes.Item1 = Item1Display
case TestTypes.Item2 = Item2Display
case _ = Unknown x ItemDisplay
   }
}

 I'm by no means a Scala/Lift expert so I may have overlooked stuff, so
 feel free to comment :-)

 /Jeppe


 


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[Lift] Re: [scala] JPA question

2009-06-23 Thread Oliver Lambert
I don't understand from the code sample why AbstractContainer has to be an
entity or
have a table or id annotation. I'd be looking at just using the
@MappedSuperclass annotation.

On Wed, Jun 24, 2009 at 9:27 AM, Meredith Gregory
lgreg.mered...@gmail.comwrote:

 Kris,

 Thanks for this code sample. i will study and see if it offers a way around
 the conundrum. In the meantime, here's a code 
 samplehttp://svn.biosimilarity.com/src/open/codesamples/trunk/hibernate/hbex/illustrating
  exactly what i'm talking about.

 Best wishes,

 --greg


 On Tue, Jun 23, 2009 at 2:21 PM, Kris Nuttycombe 
 kris.nuttyco...@gmail.com wrote:


 Oops, forgot a member of the hierarchy, inline below:

 On Tue, Jun 23, 2009 at 3:19 PM, Kris
 Nuttycombekris.nuttyco...@gmail.com wrote:
  I'm just so puzzled by this thread because I have the following entity
  hierarchy in my app:
 
  @Entity
  @Inheritance(strategy = InheritanceType.JOINED)
  @Table(name = payment_source_transaction)
  public abstract class PaymentSourceTransactionT extends
 PaymentSourceT
 extends SubscriptionTransaction implements
  MonetaryTransactionT, Serializable {
 
 @ManyToOne(cascade = {CascadeType.MERGE, CascadeType.PERSIST},
  optional = false, targetEntity = PaymentSource.class)
 private T paymentSource;
 
 ...
  }
 
  @Entity
  public abstract class CreditCardTransaction extends
  PaymentSourceTransactionCreditCard { ... }
 

 @MappedSuperclass
 public abstract class VoidableCCTransaction extends
 CreditCardTransaction implements Serializable { ... }

@OneToOne(cascade = {CascadeType.MERGE, CascadeType.PERSIST},
 mappedBy=voidedTransaction)
private CCVoidTransaction voidTransaction;

  @Entity
  public class CCAuthTransaction extends VoidableCCTransaction
  implements AuthTransactionCreditCard, Divisional, Serializable { ..
  }
 
  @Entity
  @Inheritance(strategy = InheritanceType.SINGLE_TABLE)
  public abstract class CCCaptureTransaction extends
  VoidableCCTransaction implements Serializable,
  CaptureTransactionCreditCard {
 private static final long serialVersionUID = 1L;
 
 @OneToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE})
 private CCAuthTransaction authTransaction;
 
 ...
  }
 
  @Entity
  public class EcometryCaptureTransaction extends CCCaptureTransaction
  implements EcometryOrder, Serializable { ... }
 
  @Entity
  @Inheritance(strategy = InheritanceType.JOINED)
  public abstract class PaymentSourceT extends PaymentSourceT
  extends UUEntity implements MutationControlledT, Serializable { ...
  }
 
  @Entity
  public class CreditCard extends PaymentSourceCreditCard implements
  Addressable, Serializable { ... }
 
  @Entity
  public class CheckingAccount extends PaymentSourceCheckingAccount
  implements Serializable { ... }
 
  This works for me without difficulty. What am I missing that is
  different about this scheme than the one that you describe?
 
  Kris
 
 
 
  On Tue, Jun 23, 2009 at 11:29 AM, Meredith
  Gregorylgreg.mered...@gmail.com wrote:
  Derek,
 
  i completely concur. i wanted to give it a serious go, however, before
 i
  abandoned it. The issue is that so much of the incumbent technology
 goes
  across this object-relational boundary, i needed a simple case to
 justify
  walking away from this technology. This example provides it. To see
 just how
  non-complex it is, let me state it in common sense terms.
 
  Suppose we are building an app for a manufacturing firm, and the firm
 ships
  out its goods in different kinds of containers: plastic-coated
 cardboard
  boxes, metal boxes, etc.
  Suppose that different kinds of materials go into different kinds of
 boxes,
  and sometimes medicinal or toxic substances go into these containers;
 but,
  every container gets a manifest. When the container contains these
 materials
  that need to be handled with care or attention, the manifest is a
 special
  kind of certified manifest.
 
  We might imagine that this firm has already constructed an object model
 that
  looks like
 
  abstract class Container { ...; Manifest getManifest(); void
 setManifest(
  Manifest manifest ); ... }
  class CardboardContainer extends Container { ... }
  class MetalContainer extends Container { ... }
  abstract class Manifest { ... }
  class StdManifest extends Manifest { ... }
  class CertifiedManifest extends Manifest { ... }
 
  We need to work with their existing infrastructure. However, this
  situation/model breaks Hibernate's implementation of JPA. That such a
 simple
  situation would cause problems indicates to me that these technologies
 have
  never been used in any significant way in production -- otherwise they
 would
  have bumped into such a common case. If i'm wrong about something,
 here, i'd
  love to be disabused of my misunderstanding(s). Currently, i feel i
 have
  enough justification to go to a different kind of solution, such as a
  LINQ-based solution.
 
  Best wishes,
 
  --greg
 
  On Mon, Jun 22, 2009 at 5:46 PM, Derek 

[Lift] Re: [scala] JPA question

2009-06-23 Thread Oliver Lambert
Actually, I don't think I would be looking at @MappedSuperclass either.
Whats your database schema? Is it always a Legacy database or are you
creating it new?
Are the java entities you are trying to create, read only?
Why aren't you using Scala's JPA?
If you are creating a complex parent-child relationships, cant you use
one-many relationships in hibernate
rather than bothering with Hibernates object-superclass implementation?

I have seen Hibernate used to map complex relationships in production, but
when I see an OR-mapping
problem I always try KISS principles on it first. Sometimes this involves
creating views, sometimes it involves just completely lying to Hibernate
about the underling data structure and creating
a Read only entity.
For example I have a the following entity that maps to a select (not a table
or view)
class RoEntity {
  @Id
  var entityId: Long = _
...
}
EM.createNativeQuery[RoEntity](nativeQueryStr, classOf[RoEntity])

If I want to save it, I populate an entity that really has an underlying
table.

cheers
Oliver

On Wed, Jun 24, 2009 at 9:55 AM, Oliver Lambert olambo...@gmail.com wrote:

 I don't understand from the code sample why AbstractContainer has to be an
 entity or
 have a table or id annotation. I'd be looking at just using the
 @MappedSuperclass annotation.


 On Wed, Jun 24, 2009 at 9:27 AM, Meredith Gregory 
 lgreg.mered...@gmail.com wrote:

 Kris,

 Thanks for this code sample. i will study and see if it offers a way
 around the conundrum. In the meantime, here's a code 
 samplehttp://svn.biosimilarity.com/src/open/codesamples/trunk/hibernate/hbex/illustrating
  exactly what i'm talking about.

 Best wishes,

 --greg


 On Tue, Jun 23, 2009 at 2:21 PM, Kris Nuttycombe 
 kris.nuttyco...@gmail.com wrote:


 Oops, forgot a member of the hierarchy, inline below:

 On Tue, Jun 23, 2009 at 3:19 PM, Kris
 Nuttycombekris.nuttyco...@gmail.com wrote:
  I'm just so puzzled by this thread because I have the following entity
  hierarchy in my app:
 
  @Entity
  @Inheritance(strategy = InheritanceType.JOINED)
  @Table(name = payment_source_transaction)
  public abstract class PaymentSourceTransactionT extends
 PaymentSourceT
 extends SubscriptionTransaction implements
  MonetaryTransactionT, Serializable {
 
 @ManyToOne(cascade = {CascadeType.MERGE, CascadeType.PERSIST},
  optional = false, targetEntity = PaymentSource.class)
 private T paymentSource;
 
 ...
  }
 
  @Entity
  public abstract class CreditCardTransaction extends
  PaymentSourceTransactionCreditCard { ... }
 

 @MappedSuperclass
 public abstract class VoidableCCTransaction extends
 CreditCardTransaction implements Serializable { ... }

@OneToOne(cascade = {CascadeType.MERGE, CascadeType.PERSIST},
 mappedBy=voidedTransaction)
private CCVoidTransaction voidTransaction;

  @Entity
  public class CCAuthTransaction extends VoidableCCTransaction
  implements AuthTransactionCreditCard, Divisional, Serializable { ..
  }
 
  @Entity
  @Inheritance(strategy = InheritanceType.SINGLE_TABLE)
  public abstract class CCCaptureTransaction extends
  VoidableCCTransaction implements Serializable,
  CaptureTransactionCreditCard {
 private static final long serialVersionUID = 1L;
 
 @OneToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE})
 private CCAuthTransaction authTransaction;
 
 ...
  }
 
  @Entity
  public class EcometryCaptureTransaction extends CCCaptureTransaction
  implements EcometryOrder, Serializable { ... }
 
  @Entity
  @Inheritance(strategy = InheritanceType.JOINED)
  public abstract class PaymentSourceT extends PaymentSourceT
  extends UUEntity implements MutationControlledT, Serializable { ...
  }
 
  @Entity
  public class CreditCard extends PaymentSourceCreditCard implements
  Addressable, Serializable { ... }
 
  @Entity
  public class CheckingAccount extends PaymentSourceCheckingAccount
  implements Serializable { ... }
 
  This works for me without difficulty. What am I missing that is
  different about this scheme than the one that you describe?
 
  Kris
 
 
 
  On Tue, Jun 23, 2009 at 11:29 AM, Meredith
  Gregorylgreg.mered...@gmail.com wrote:
  Derek,
 
  i completely concur. i wanted to give it a serious go, however, before
 i
  abandoned it. The issue is that so much of the incumbent technology
 goes
  across this object-relational boundary, i needed a simple case to
 justify
  walking away from this technology. This example provides it. To see
 just how
  non-complex it is, let me state it in common sense terms.
 
  Suppose we are building an app for a manufacturing firm, and the firm
 ships
  out its goods in different kinds of containers: plastic-coated
 cardboard
  boxes, metal boxes, etc.
  Suppose that different kinds of materials go into different kinds of
 boxes,
  and sometimes medicinal or toxic substances go into these containers;
 but,
  every container gets a manifest. When the container contains these
 materials
  that need to be handled with care

[Lift] Re: JPA and auto generation of id

2009-06-22 Thread Oliver Lambert
What sort of database are you trying to use Hibernate against (look at the
property hibernate.dialect  in the file persistence.xml)?
I think the error may mean that your trying to use GenerationType.AUTO
against a database that doesn't support it.
On Mon, Jun 22, 2009 at 7:08 PM, David Persons dhwpers...@gmail.com wrote:


 Hello guys,

 I get a org.hibernate.exception.SQLGrammarException: could not get or
 update next value error everytime I try to save the following Entity:

 @Entity
 class Scene {
  @Id
  @GeneratedValue(){val strategy = GenerationType.AUTO}
  var id : Long = _

  @Column{val unique = true, val nullable = false}
  var ordering : Int = _

  @Column{val unique = true, val nullable = false}
  var name : String = 

  @ManyToOne{val optional = false}
  var storyBoard : StoryBoard = _
 }

 What am I doing wrong??

 grtz,
 David Persons

 


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[Lift] Re: prep for offline work

2009-06-22 Thread Oliver Lambert
Check you can work offline before you go with the command Tim details (mvn
-o clean install).
If you are running against a snapshot of Lift consider changing to a release
instead, otherwise
Maven will want to download a new snapshot every day (you could freeze at a
snapshot version,
but thats more complicated).

On Tue, Jun 23, 2009 at 1:30 AM, Timothy Perrett timo...@getintheloop.euwrote:


 Grab yourself a copy of the lift book, download the lift source code
 so you can build locally if need be and dont forget you prefix all
 your maven commands: mvn -o

 Cheers, Tim

 On Jun 22, 4:01 pm, Mojo mojo...@gmail.com wrote:
  Hi all, I've enjoyed following the list for a few weeks, and studying
  Scala casually for a few months.
 
  I'm a Java developer currently working with Spring and Hibernate to
  build web apps, and spent a few months professionally in the Ruby on
  Rails world as well.
 
  I'm about to depart on a ten-day cruise (San Francisco to Alaska) and
  kind of looking forward to the disconnected time to spend working with
  Scala and Lift.
 
  Being disconnected makes for good concentration time, but it also
  makes it difficult to deal with things like missing Maven
  dependencies. I'm trying to be as prepared as I can before departure.
 
  I've done things like install the helloworld lift app from Maven,
  and done a complete build to jetty:run, and even mvn site to try and
  make sure all the plugins and dependencies are in my local repository.
  I have Netbeans on the machine, 6.5, and the latest RC for 6.7, but
  haven't yet installed the Scala plugin.
 
  I'd probably better have a DB on hand. Mysql or HSQLDB.
 
  Can anyone think of any other good ways to prepare for doing some
  study and development while being off the grid, so to speak?
 
  Cheers,
  Mojo
  --
  Morris Jones
  Monrovia, CA
  m...@whiteoaks.comhttp://mojo.whiteoaks.com
 


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[Lift] Re: Thoughts on separation of display from logic

2009-06-18 Thread Oliver Lambert
I modified the BindHelper in the branch, I am working on some time back to
allow automatic mixin binding by name.
If you have in your html
  input name=favourite:yourName size=20 maxlength=40/,
then it will accept in the snippet
  bind(favourite, xhtml, yourName - SHtml.text(show string, s =
setBio(s))
and output something like
   input name=38833747474# size=20 maxlength=40 value=show string/
if you include attributes in the snippets bind, that are already in the
html, it will substitute them

Is this something like what you are trying to achieve?

On Thu, Jun 18, 2009 at 6:51 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:

 I can see a set of methods that look like:
 textarea(f: String = Unit)(n: NodeSeq) that will slurp the values and
 attributes out of the NodeSeq... so you'd bind like:

 biography - textarea(s = setBio(s)) _

 On Wed, Jun 17, 2009 at 10:22 AM, Matt Williams m...@makeable.co.ukwrote:


 I wholeheartedly agree with the philosophy of separating the display
 from the program logic, and am currently getting to grips with the
 generators, but am finding that now I end up with a degree of markup
 within my code.

 Can you think of any caveats to infering the node type passed, and
 dynamically using the relevant generators to construct the returned
 node.

 I am thinking something along the lines of:

 person:biography
 textarea style=myStyle cols=20 rows=5
 This is a sample of some biography text
 /textarea
 /person:biography

 Where it would automatically infer that it is a textarea, pass through
 the relevant attributes, and insert whatever function, values, etc I
 have specified in my snippet.

 What are your thoughts on this?

 Brgds,

 Matt






 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

2009-06-18 Thread Oliver Lambert
Hi Greg,
Thank you, I enjoyed reading that. Perhaps the Greedy Empire, should indeed,
be worried.

cheers
Oliver

2009/6/18 Meredith Gregory lgreg.mered...@gmail.com

 Oliver,

 You wrote:

 we would have taken over Google by now.


 My not-so-secret plan for taking over Google is contained in the deck i
 posted in response to 
 Viktorhttp://svn.biosimilarity.com/src/open/talks/MonadicDesignPatternsForTheWeb.pdf.
 Part of the reason i was excited that Jonas took on to make the JTA wrapper
 monadic is that it composes perfectly with the ideas explained in the deck.
 These ideas dovetail perfectly with the DSL stuff i've been working on.

 My feeling is that we are at a point where things could really start to
 happen. The ideas are 'in the air' so to speak.

 Best wishes,

 --greg

 2009/6/17 Oliver Lambert olambo...@gmail.com



 2009/6/18 Meredith Gregory lgreg.mered...@gmail.com

 Oliver,

 The short answer is no. The longer answer is

- i worked this all out on my own; so, you guys -- who can program
lift on top of scala on top of JVM and are therefore about 20X smarter 
 than
i am -- can too.

 I think if we were all 20X (or 2X) smarter than you, we would have taken
 over Google by now.


-
- And also, help is always available, if there is something specific
you don't understand, let me know and i will do my best to convey it to 
 you.

 As suggested by another kind person, I may have to start by going back to
 (an American?) school.

 Heres a question, why should I care about Monad's when they are already in
 OO, just not called Monads?



-

 Best wishes,

 --greg

 P.S. Here is a version of the paragraph with links to useful bits of lore
 from the literature.

 For myself, i was unhappy with the notion of name. The 
 π-calculihttp://en.wikipedia.org/wiki/Pi-calculusand lambda
 calculi http://en.wikipedia.org/wiki/Lambda_calculus suffer a
 dependence on a notion of name. Both families of calculi require at least 
 countably
 infinitely http://en.wikipedia.org/wiki/Countable many 
 nameshttp://www.cs.nps.navy.mil/research/languages/statements/gordon.html,
 and a notion of equality on names. If names have no internal structure then
 these theories *cannot be 
 effectivehttp://en.wikipedia.org/wiki/Computable_function
 *. The reasons is that the notion of equality must then be realized as
 an infinitary table which cannot fit in any computer we have access to.
 Therefore, in effective theories, names must have internal structure. Since
 they have internal structure and are at least countably infinite, one is in
 danger of undermining the foundational character of these proposals for
 computing. Therefore, the only possible solution is that the notion of
 structured name must come from the notion of program proposed by the model.
 This argument is airtight. If you want a foundational model of computing
 with nominal structure, the nominal structure must derive from the notion of
 computation being put forward, i.e. it must *reflect* the notion of
 computationhttp://svn.biosimilarity.com/src/open/papers/trunk/concurrency/rho/ex_nihilo_entcs/ex_nihilo_finco.pdf.
 This gives rise to all kinds of new an beautiful phenomena. One measure of
 your way into compositional thinking is whether this is happening. Is your
 approach to compositional thinking beginning to yield whole new aspects of
 computing, and new 'wholes' of computation, new forms of organization.


 2009/6/16 Oliver Lambert olambo...@gmail.com



 2009/6/17 Meredith Gregory lgreg.mered...@gmail.com

 Jeremy,

 Most excellent question award to you, sir!

 How to bootstrap thinking compositionally... this is what i did

- learn some compositional idioms by heart
   - do you know the shape of the paradoxical combinator by heart
   - do you know the data making up a monad
   - do you know the data making up a distributive law between
   monads
   - use them in real world applications and see where they fail
   - when is calculating the least/greatest fixpoint of a recursive
   spec for a problem the suboptimal solution
   - when is a monad not the answer
   - when is an indexed form of composition inadequate
   - improve them
   - is it a situational improvement or
   - a fundamental improvement
   - see where the very programming model itself fails
   - is functional composition the only sort of composition
   - how is parallel composition like functional composition
   - is parallel composition easily represented in categorical
   composition
   - improve it
   - what is the view of the world in your notion of composition
   - play with new programming models
   - does your new notion of composition give rise to a whole
   generation of different models
   - invent new idioms in these models
   - what are the things these models naturally express
   - and teach them to someone who wishes to bootstrap thinking

[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

2009-06-17 Thread Oliver Lambert
You made an assumption and programmed a solution based on the knowledge you
had at the time. Thats fine and there is nothing wrong with it - start with
the simplest solution that fits. If it need to be changed due to changing
requirements, thats fine too. There is a tradeoff in creating a overly
complex solution that fits problems that you think might exist in the future
and simplicity. Also, there is nothing that makes composition an idea that
is only understood and relevant to functional programming as almost seems to
be suggested here.

On Wed, Jun 17, 2009 at 4:14 PM, Derek Chen-Becker dchenbec...@gmail.comwrote:

 I agree that it's an issue. In my own defense, what I meant was not that I
 didn't think people would use more than one DB. I actually have several apps
 (not yet converted to Lift) that use 4 or more persistence units that
 represent various legacy databases. Rather, I failed to realize the problem
 that would arise from defining the EM factory as a singleton because when I
 wrote that code I didn't fully understand how member objects on classes
 worked. Other than that, I agree with your post :)
 Derek

 On Tue, Jun 16, 2009 at 5:38 PM, Meredith Gregory 
 lgreg.mered...@gmail.com wrote:

 Derek,

 soapbox
 You have just demonstrated a process that i have been talking about for
 the last 15 years. People have a blind spot when it comes to thinking
 compositionally. They think -- almost to a person -- about god's eye view
 solutions where there's only one of some key solution component. They don't
 think about solutions that are composed of ... (wait for it)... solutions!
 It takes some serious training to think compositionally. Compositional
 solutions, however, are the only realistic way to scale. When solutions are
 compositional, you can *de*compose. The db example is a case in point.
 One of the most natural ways to scale data access is sharding and
 partitioning -- which requires upfront machinery to support decomposition of
 the store.

 Lest you feel bad, note that some of the best scientific minds of all time
 have fallen prey to this blind spot. Newtonian physics as well as Einstein's
 update to Newton's proposal is a non-compositional solution. Quantum
 mechanics also exhibits compositional failures. This is why physics is
 failing to find proposals that link theories of gravitation (essentially
 large scale) to quantum mechanical theories of the other forces (essentially
 very small scale) -- the physical theories are non-compositional -- they
 don't scale!

 One of the real things functional programming has going for it is that the
 basic model of computation underlying the means of structuring and
 manipulating programs is compositional. That's why it is important to have a
 technology like Scala resting atop the incumbent execution model (JVM) being
 deployed on web-scale problems. Compositionality is the only way to tackle
 applications at global scale.
 /soapbox

 Thanks for getting the fix to this problem in so quickly.

 Best wishes,

 --greg


 On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker 
 dchenbec...@gmail.com wrote:

 Using multiple EMs was not something I had considered when I wrote this.
 I think that I can modify the code to provide a __nameSalt def to
 differentiate instances. Let me work on it and I'll have something soon.

 Derek


 On 6/16/09, Jean-Luc jlcane...@gmail.com wrote:

 For your information, here is an extract of source code of RequestVarEM
 :

 Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
object emVar extends RequestVar[EntityManager](openEM()) { ... }
 }

 EntityManager is stored in the singleton emVar; so, all db access of
 Model objects are made using the singleton emVar.
 = trait RequestVarEM allow only one connection to a database within the
 same HttpRequest context.


 Jean-Luc

 2009/6/15 Jean-Luc jlcane...@gmail.com

  Hello,

 I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
 defined with RequestVarEM :
 - object ModelDb1 extends LocalEMF(db1) with RequestVarEM  //
 Motorbike database
 - object ModelDb2 extends LocalEMF(db2) with RequestVarEM  //
 Motorway database

 I thought one could access to any databases independently from any
 snippet as long as the correct Model object were used (ModelDb1 or 
 ModelDb2
 for exemple) ; but when I access both databases from the same page, the
 second database access issues a Named query not found exception.

 I have two snippets, one to display a list of motorbike, another to
 display a list of motorway :
 - page1 :
 ModelDb1.createNamedQuery[Motorbike](Motorbike.findAll).getResultList() 
 =
 ok
 - page2
 : ModelDb2.createNamedQuery[Motorway](Motorway.findAll).getResultList() 
 =
 ok
 - page3 : calling from page 3 motorbike  motorway snippets : Named
 query not found: Motorway.findAll
 - page4 : calling from page 4 motorway  motorbike snippets : Named
 query not found: Motorbike.findAll
 - page3  changing the query of *Motorway* snippet :
   - 
 

[Lift] QA, before merging code

2009-06-17 Thread Oliver Lambert
Hi,

Seems theres been a little bit of discussion about methodologies of coding
and development processes in the latest threads which is cool
and makes me think about my current coding efforts.

I created a branch a while ago where I put in my take on a slightly
alternative (or complementary?) binding process (the particular code
adds a bind by name to BindHelpers). I was hoping for some feedback from a
few of you (David, Marius, and anyone else) before
merging it back with the main site, as I feel what I have done might be
contentious and I don't want to cause any problems.

Whats the normal process of committing changes. Is the code QA'ed in some
way or do I just do it,and wait for people to say #!.

cheers
Oliver

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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

2009-06-17 Thread Oliver Lambert
2009/6/18 Meredith Gregory lgreg.mered...@gmail.com

 Oliver,

 The short answer is no. The longer answer is

- i worked this all out on my own; so, you guys -- who can program lift
on top of scala on top of JVM and are therefore about 20X smarter than i am
-- can too.

 I think if we were all 20X (or 2X) smarter than you, we would have taken
over Google by now.


-
- And also, help is always available, if there is something specific
you don't understand, let me know and i will do my best to convey it to 
 you.

 As suggested by another kind person, I may have to start by going back to
(an American?) school.

Heres a question, why should I care about Monad's when they are already in
OO, just not called Monads?



-

 Best wishes,

 --greg

 P.S. Here is a version of the paragraph with links to useful bits of lore
 from the literature.

 For myself, i was unhappy with the notion of name. The 
 π-calculihttp://en.wikipedia.org/wiki/Pi-calculusand lambda
 calculi http://en.wikipedia.org/wiki/Lambda_calculus suffer a dependence
 on a notion of name. Both families of calculi require at least countably
 infinitely http://en.wikipedia.org/wiki/Countable many 
 nameshttp://www.cs.nps.navy.mil/research/languages/statements/gordon.html,
 and a notion of equality on names. If names have no internal structure then
 these theories *cannot be 
 effectivehttp://en.wikipedia.org/wiki/Computable_function
 *. The reasons is that the notion of equality must then be realized as an
 infinitary table which cannot fit in any computer we have access to.
 Therefore, in effective theories, names must have internal structure. Since
 they have internal structure and are at least countably infinite, one is in
 danger of undermining the foundational character of these proposals for
 computing. Therefore, the only possible solution is that the notion of
 structured name must come from the notion of program proposed by the model.
 This argument is airtight. If you want a foundational model of computing
 with nominal structure, the nominal structure must derive from the notion of
 computation being put forward, i.e. it must *reflect* the notion of
 computationhttp://svn.biosimilarity.com/src/open/papers/trunk/concurrency/rho/ex_nihilo_entcs/ex_nihilo_finco.pdf.
 This gives rise to all kinds of new an beautiful phenomena. One measure of
 your way into compositional thinking is whether this is happening. Is your
 approach to compositional thinking beginning to yield whole new aspects of
 computing, and new 'wholes' of computation, new forms of organization.


 2009/6/16 Oliver Lambert olambo...@gmail.com



 2009/6/17 Meredith Gregory lgreg.mered...@gmail.com

 Jeremy,

 Most excellent question award to you, sir!

 How to bootstrap thinking compositionally... this is what i did

- learn some compositional idioms by heart
   - do you know the shape of the paradoxical combinator by heart
   - do you know the data making up a monad
   - do you know the data making up a distributive law between monads
   - use them in real world applications and see where they fail
   - when is calculating the least/greatest fixpoint of a recursive
   spec for a problem the suboptimal solution
   - when is a monad not the answer
   - when is an indexed form of composition inadequate
   - improve them
   - is it a situational improvement or
   - a fundamental improvement
   - see where the very programming model itself fails
   - is functional composition the only sort of composition
   - how is parallel composition like functional composition
   - is parallel composition easily represented in categorical
   composition
   - improve it
   - what is the view of the world in your notion of composition
   - play with new programming models
   - does your new notion of composition give rise to a whole
   generation of different models
   - invent new idioms in these models
   - what are the things these models naturally express
   - and teach them to someone who wishes to bootstrap thinking
compositionally

 For myself, i was unhappy with the notion of name. The π-calculi and
 lambda calculi suffer a dependence on a notion of name. Both families of
 calculi require at least countably infinitely many names, and a notion of
 equality on names. If names have no internal structure then these theories
 *cannot be effective*.


 Do we need to do some sort of course to understand this language?


 The reasons is that the notion of equality must then be realized as an
 infinitary table which cannot fit in any computer we have access to.
 Therefore, in effective theories, names must have internal structure. Since
 they have internal structure and are at least countably infinite, one is in
 danger of undermining the foundational character of these proposals for
 computing. Therefore, the only possible solution is that the notion of
 structured

[Lift] Re: Develop / Production System

2009-06-16 Thread Oliver Lambert
Sometimes (is this, folk-tale or truth?) the maven repository around the
application you'reworking on may get slightly out of sync. Then you might
need to delete the part of
the repository that your application is installed into.

On Tue, Jun 16, 2009 at 7:25 PM, Tobias Daub hannes.flo...@gmx.li wrote:


 Ok, thanks.

 Well, with the pom.xml file it was a little bit strange. I had to change
 the Lift version to do the mvn clean install and then change it back.
 I've no idea why, but it was the only things that helped.


  Maven stores project dependencies in a repository (by default, its
  called .m2). When you move a Lift application from one system to
  another, the repository on the new system may need to be updated,
  hence your requirement to do a mvn clean install.
 
  Don't know what you changed on the pom.xml (if you have any hard coded
  paths, you might have to change them).
 
  On Tue, Jun 16, 2009 at 2:41 AM, Tobias Daub hannes.flo...@gmx.li
  mailto:hannes.flo...@gmx.li wrote:
 
 
  Hi There,
 
  I would like to know whats the best way to move an existing Lift
  installation from one system to another. I ask this, because I had
  some
  problems after I just copied the whole directory (I had to edit the
  pom.xml file and do mvn clean install).
 
 
  thanks
 
 
 
 
  


 


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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

2009-06-16 Thread Oliver Lambert
I think you have just volunteered to help refactor this code to make it more
composition friendly :)

On Wed, Jun 17, 2009 at 9:38 AM, Meredith Gregory
lgreg.mered...@gmail.comwrote:

 Derek,

 soapbox
 You have just demonstrated a process that i have been talking about for the
 last 15 years. People have a blind spot when it comes to thinking
 compositionally. They think -- almost to a person -- about god's eye view
 solutions where there's only one of some key solution component. They don't
 think about solutions that are composed of ... (wait for it)... solutions!
 It takes some serious training to think compositionally. Compositional
 solutions, however, are the only realistic way to scale. When solutions are
 compositional, you can *de*compose. The db example is a case in point. One
 of the most natural ways to scale data access is sharding and partitioning
 -- which requires upfront machinery to support decomposition of the store.

 Lest you feel bad, note that some of the best scientific minds of all time
 have fallen prey to this blind spot. Newtonian physics as well as Einstein's
 update to Newton's proposal is a non-compositional solution. Quantum
 mechanics also exhibits compositional failures. This is why physics is
 failing to find proposals that link theories of gravitation (essentially
 large scale) to quantum mechanical theories of the other forces (essentially
 very small scale) -- the physical theories are non-compositional -- they
 don't scale!

 One of the real things functional programming has going for it is that the
 basic model of computation underlying the means of structuring and
 manipulating programs is compositional. That's why it is important to have a
 technology like Scala resting atop the incumbent execution model (JVM) being
 deployed on web-scale problems. Compositionality is the only way to tackle
 applications at global scale.
 /soapbox

 Thanks for getting the fix to this problem in so quickly.

 Best wishes,

 --greg


 On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker dchenbec...@gmail.com
  wrote:

 Using multiple EMs was not something I had considered when I wrote this. I
 think that I can modify the code to provide a __nameSalt def to
 differentiate instances. Let me work on it and I'll have something soon.

 Derek


 On 6/16/09, Jean-Luc jlcane...@gmail.com wrote:

 For your information, here is an extract of source code of RequestVarEM :

 Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
object emVar extends RequestVar[EntityManager](openEM()) { ... }
 }

 EntityManager is stored in the singleton emVar; so, all db access of
 Model objects are made using the singleton emVar.
 = trait RequestVarEM allow only one connection to a database within the
 same HttpRequest context.


 Jean-Luc

 2009/6/15 Jean-Luc jlcane...@gmail.com

  Hello,

 I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
 defined with RequestVarEM :
 - object ModelDb1 extends LocalEMF(db1) with RequestVarEM  //
 Motorbike database
 - object ModelDb2 extends LocalEMF(db2) with RequestVarEM  // Motorway
 database

 I thought one could access to any databases independently from any
 snippet as long as the correct Model object were used (ModelDb1 or ModelDb2
 for exemple) ; but when I access both databases from the same page, the
 second database access issues a Named query not found exception.

 I have two snippets, one to display a list of motorbike, another to
 display a list of motorway :
 - page1 :
 ModelDb1.createNamedQuery[Motorbike](Motorbike.findAll).getResultList() =
 ok
 - page2
 : ModelDb2.createNamedQuery[Motorway](Motorway.findAll).getResultList() =
 ok
 - page3 : calling from page 3 motorbike  motorway snippets : Named
 query not found: Motorway.findAll
 - page4 : calling from page 4 motorway  motorbike snippets : Named
 query not found: Motorbike.findAll
 - page3  changing the query of *Motorway* snippet :
   - 
 ModelDb2.createNamedQuery[*Motorbike*](*Motorbike*.findAll).getResultList()
 = it's ok and I do NOT have an exception !

 I joined a sample application, ...

 any idea about this issue ?
 (bad use of LocalEMF in the application code ? issue with LocalEMF or
 RequestVarEM ?)

 Jean-Luc

 PS :
 I don't know if it's related but I have this in the log :
 [INFO] Checking for multiple versions of scala
 [WARNING] Multiple versions of scala libraries detected!


 --
 Jean-Luc Canela
 jlcane...@gmail.com




 --
 Jean-Luc Canela
 jlcane...@gmail.com








 --
 L.G. Meredith
 Managing Partner
 Biosimilarity LLC
 1219 NW 83rd St
 Seattle, WA 98117

 +1 206.650.3740

 http://biosimilarity.blogspot.com


 


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[Lift] directory structure

2009-06-16 Thread Oliver Lambert
In Boot.scala can I call LiftRules.addToPackages multiple times to add
multiple directories with snippets in them?

Do I have to have a directory structure ending with snippet, for snippets?
Do I need the directories comet, model and view, when they are just empty?

cheers
Oliver

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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

2009-06-16 Thread Oliver Lambert
2009/6/17 Meredith Gregory lgreg.mered...@gmail.com

 Jeremy,

 Most excellent question award to you, sir!

 How to bootstrap thinking compositionally... this is what i did

- learn some compositional idioms by heart
   - do you know the shape of the paradoxical combinator by heart
   - do you know the data making up a monad
   - do you know the data making up a distributive law between monads
   - use them in real world applications and see where they fail
   - when is calculating the least/greatest fixpoint of a recursive
   spec for a problem the suboptimal solution
   - when is a monad not the answer
   - when is an indexed form of composition inadequate
   - improve them
   - is it a situational improvement or
   - a fundamental improvement
   - see where the very programming model itself fails
   - is functional composition the only sort of composition
   - how is parallel composition like functional composition
   - is parallel composition easily represented in categorical
   composition
   - improve it
   - what is the view of the world in your notion of composition
   - play with new programming models
   - does your new notion of composition give rise to a whole
   generation of different models
   - invent new idioms in these models
   - what are the things these models naturally express
   - and teach them to someone who wishes to bootstrap thinking
compositionally

 For myself, i was unhappy with the notion of name. The π-calculi and lambda
 calculi suffer a dependence on a notion of name. Both families of calculi
 require at least countably infinitely many names, and a notion of equality
 on names. If names have no internal structure then these theories *cannot
 be effective*.


Do we need to do some sort of course to understand this language?


 The reasons is that the notion of equality must then be realized as an
 infinitary table which cannot fit in any computer we have access to.
 Therefore, in effective theories, names must have internal structure. Since
 they have internal structure and are at least countably infinite, one is in
 danger of undermining the foundational character of these proposals for
 computing. Therefore, the only possible solution is that the notion of
 structured name must come from the notion of program proposed by the model.
 This argument is airtight. If you want a foundational model of computing
 with nominal structure, the nominal structure must derive from the notion of
 computation being put forward, i.e. it must *reflect* the notion of
 computation. This gives rise to all kinds of new an beautiful phenomena. One
 measure of your way into compositional thinking is whether this is
 happening. Is your approach to compositional thinking beginning to yield
 whole new aspects of computing, and new 'wholes' of computation, new forms
 of organization.

 Best wishes,

 --greg

 On Tue, Jun 16, 2009 at 7:31 PM, Jeremy Day jeremy@gmail.com wrote:

 Greg,

 On Tue, Jun 16, 2009 at 6:38 PM, Meredith Gregory 
 lgreg.mered...@gmail.com wrote:

 It takes some serious training to think compositionally.


 No doubt it is extremely tough to think compositionally, and it's all too
 easy to fall back on non-compositional ways of thinking.  In a similar vein
 it's all too easy to fall into procedural patterns when learning or working
 with functional programming in a multi-paradigm language.  But what are good
 ways for programmers to learn to think compositionally and, more
 importantly, practice?  Do you know of any books or online references that
 might help make the transition for anyone who is interested?

 Jeremy





 --
 L.G. Meredith
 Managing Partner
 Biosimilarity LLC
 1219 NW 83rd St
 Seattle, WA 98117

 +1 206.650.3740

 http://biosimilarity.blogspot.com

 


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[Lift] Re: Cheap Hosting

2009-06-15 Thread Oliver Lambert
Thats good value - might use it too sometime.

On Mon, Jun 15, 2009 at 1:56 PM, David Pollak feeder.of.the.be...@gmail.com
 wrote:

 Mark,
 You should be able to host a moderately trafficked site (400 unique
 visitors an hour) with a $20 slicehost.com account.

 Thanks,

 David

 On Sun, Jun 14, 2009 at 4:40 PM, Mark Lynn m...@sabado.com wrote:



 I have a web app that I am doing free for a charitable organization
 that is sensitive to hosting costs. I would like to make it my first
 Lift app since it is pretty straight-forward - simple database and
 will probably just use Mapper. Most of my previous experience is with
 Rails projects or projects that were hosted internally so I don't have
 much experience with java hosting services. Does anyone have a
 recommendation for an inexpensive hosting option where I can use scala/
 lift? With Rails or PHP I can find stuff for as little as $5/mth.

 Mark Lynn









 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: a href... optional query params

2009-06-15 Thread Oliver Lambert
I don't think any of the Liftweb's binding is going to survive a server
restart,
but, why are you worried about a server restart?

On Tue, Jun 16, 2009 at 8:59 AM, Ewan ehar...@gmail.com wrote:


 Hi all

 I have bind that renders a link and at the moment I want the link to
 include a couple of query params ie.

 a href=/search?q1=v1q2=v2 Click me/a

 I figured I'd be able to do something like the following except the
 additional key/id is added which messes it up.

 value - SHtml.link(/search?q1=v1, () = doSearch, SText(Click
 me))

 Looking at the src I can't see how this would work.  I guess using a
 requestVar would be the recommended solution but how does that work
 for bookmarked urls between server restarts?

 


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[Lift] Re: Hiring Lift Developers

2009-06-15 Thread Oliver Lambert
As probably is Sydney, Australia.

It might be useful knowing where people are who are looking for jobs - the
company
I work for is small, but, might be interested in hiring sometime in the
future.

On Tue, Jun 16, 2009 at 8:51 AM, KWright kev.lee.wri...@googlemail.comwrote:


 I suspect that London UK would probably be an exception too far!

 On 15 June, 23:45, David LaPalomento dlapalome...@novell.com wrote:
  Good point, sorry!  Most of the team is located in the Boston area,
  but we'd probably be willing to make exceptions.
 
  On Jun 15, 4:14 pm, KWright kev.lee.wri...@googlemail.com wrote:
 
   You forgot to mention where you are in the world, it might be useful
   to know... :P
 
   On 15 June, 18:32, David LaPalomento dlapalome...@novell.com
   wrote:
 
Hi all,
My team has recently started a project based around Lift and we're
 looking at bringing on some passionate, full-time developers to make that
 happen.  It's a pretty ambitious effort and we expect to be pushing the
 technology envelope in real-time communication (CometActors have already
 been a huge help here) and user experience for web applications.  If you
 think you might be interested, drop me an email and I'd be glad to go into
 greater detail about the project.  Also, apologies in advance if I shouldn't
 be posting this sort of thing to the list.
 
Regards,
David

 


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[Lift] Re: Develop / Production System

2009-06-15 Thread Oliver Lambert
Maven stores project dependencies in a repository (by default, its called
.m2). When you move a Lift application from one system to another, the
repository on the new system may need to be updated, hence your requirement
to do a mvn clean install.

Don't know what you changed on the pom.xml (if you have any hard coded
paths, you might have to change them).

On Tue, Jun 16, 2009 at 2:41 AM, Tobias Daub hannes.flo...@gmx.li wrote:


 Hi There,

 I would like to know whats the best way to move an existing Lift
 installation from one system to another. I ask this, because I had some
 problems after I just copied the whole directory (I had to edit the
 pom.xml file and do mvn clean install).


 thanks

 


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[Lift] Re: file upload

2009-06-12 Thread Oliver Lambert
Whats serious uploading? I uploaded 15,000 records using it today - seemedto
handle it OK.

On Fri, Jun 12, 2009 at 9:48 AM, Timothy Perrett timo...@getintheloop.euwrote:


 FYI - its not a streaming upload at the moment, so its great for
 smallish files, but you wouldnt want to do much serious uploading with
 it right now. We've had several discussions about making it streaming,
 and its certainly on the todo list.

 Cheers, Tim

 On Jun 11, 9:24 pm, DavidV david.v.villa...@gmail.com wrote:
  I would like to upload a .csv file onto the web server so I can then
  parse it in my webapp, and put certain fields into my database.  I
  would like a Browse... button, much like the one shown on this Lift
  example page:http://demo.liftweb.net/file_upload
  Can anyone point me in the right direction as to how to get started
  doing this, or tell me where I can find the example code for the link
  I provided?  I can't seem to locate it in liftweb in github
  thanks,
  David
 


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[Lift] Re: security

2009-06-10 Thread Oliver Lambert
On Wed, Jun 10, 2009 at 11:58 PM, David Pollak 
feeder.of.the.be...@gmail.com wrote:



 On Tue, Jun 9, 2009 at 11:39 PM, marius d. marius.dan...@gmail.comwrote:


 Hi,

 For most apps cannonicalization is not really necessary as the
 character stream for form-url-encoded is UTF-8 by default as Lift uses
 UTF-8 by default. Oh and the conversion from URL encoding to plain
 UTF-8 content is really done by container and when we get the params
 from the request object they are already well formed. Now if we're
 talking about a higher level of validation that's a different story
 and IMO this is an application aspect and not much a framework one.


 And Lift does URL Decoding of the paths before presenting them as the Req()
 object.

 More broadly, Lift should provide all the features of ESAPI out of the box.
  If there are particular things that ESAPI offers that Lift doesn't, please
 flag them and we'll add them.

 I did a bunch of years as VPE and CTO at a web app security company.  In
 general, I've worked to make sure that Lift has security baked in and that
 the developer has to work to make the app insecure, rather than vice versa.
  If I missed a spot, Lift will be enhanced to make sure it does have
 security baked in.


From my perspective Lift is secure, much more so than other frameworks I've
used. The current set of Lift apps, that I've helped develop, have survived
outsourced penetration testing without requiring any modifications at all.
Great!

I'm not a security expert, but I am being asked to consider ESAPI features.
From my limited understanding, the UTF-8 encoding is fine and Lift protects
the response from displaying any scripts or html that might have
inadvertently been added to the database.  The problem is more what is being
validated and how its being validated. I don't buy Marius's claim that this
is somehow a higer order validation that is an application concern rather
than a framework one. The internet has all the insecurities it has, because
security has been left to the application developer.

As far a I can see, one problem lies when a string is obtained from the web
page and instanciated into a String object.  For instance, if it comes in as
scriptalert('XSS')/script, then its probably not what you want.  Why
does it matter if something like this gets stored in your database - perhaps
because it's one part of your security.  In addition if it comes in doubly
encoded as

%253Cscript%253Ealert('XSS')%253C%252Fscript%253E

then its probably also not what you want.

1) To stop double encoding, ESAPI suggests that you use cannonicalization to
convert the strings to a similar format before validation.
2) After, the input has been cannonicalized, ESAPI suggests that the input
should be validated against a whitelist of allowed charaters.

Now, I can't see that 1 or 2 is necessary if you are creating a number from
the input, but perhaps it should be, if you are creating a ordinary String
object. I also am not sure how much work would be involved in using a
whitelist in a location aware multilingual way, but perhaps it could be done
as a default.





 Br's,
 Marius

 On Jun 10, 5:43 am, Oliver Lambert olambo...@gmail.com wrote:
  Looks like I might have a requirement for implementing OWASP secure
 coding
  practices, as described by
 

  One thing that I definitively don't do and I believe Lift doesn't do out
 of
  the box is Canonicalize input
  before validation/filtering. I was looking into using OWASP
  ESAPIhttp://www.owasp.org/index.php/ESAPIbut I'm put off by it's use
  of
  property files and system resources.  Do any of you Canonicalize input,
 if
  so, do you use a Library? Does Lift
  need this feature, or any of the others described in the above document?
 
  cheers
  Oliver




 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: Record and Field

2009-06-01 Thread Oliver Lambert
 Im not at the machine right now, but I believe it was a version of 1.6 on
Ubuntu, I was running against the snapshot of liftweb that I cloned a couple
of days ago.

I've rerun On my mac, build 1.6.0_07-b06-153
but the exception with build 1.0 is different,
java.lang.IllegalArgumentException: wrong number of arguments
On Mon, Jun 1, 2009 at 10:05 PM, marius d. marius.dan...@gmail.com wrote:


 what Java version are you using?

 On Jun 1, 1:58 pm, Oliver Lambert olambo...@gmail.com wrote:
  When I try to run createRecord on a net.liftweb.record.Record, I get
  a java.lang.ExceptionInInitializerError.
  Any ideas what I might be doing wrong?
 
  cheers
  Oliver
 


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[Lift] Re: Record with the new bind-immutable

2009-06-01 Thread Oliver Lambert
On Sat, May 30, 2009 at 2:05 AM, marius d. marius.dan...@gmail.com wrote:




 On May 29, 4:32 pm, Oliver Lambert olambo...@gmail.com wrote:
  Hi Marius,
  To try and answer your question, I had to go and look at the Record code
 in
  more detail. I hadn't recently written the Binder Validator, so it wasn't
  designed to be
  complementary to anything else (however, some of the naming and
 methodology
  is very
  similar in both sets of code).
 
  What I found.
  1) MetaRecord.validate === Binder.validate
  2) Field.validators === BoundObj.validations
  3) Field.validationFunction === Validator.validate
  4) List[FieldError]  === List[ValidationError]
 
  Can I get rid of Binder Validation and just use Record/Field validation?
  It certainly looks like I should try. However, I might have to add/change
  some of the original Lift code.
  For instance, I might want to add an errorType (with a default, so no
 code
  is broken) to FieldError.
  I might also want to move/change Field.validationFunction so its a little
  more
  like my Validator,with an errorType and toString (When I print my
  validators, the errorType give a little
  information on what they do, rather than just telling me I have a
 function -
  I also filter using
  the errorType)

 I think we should unify the models. What I particularly like about the
 existent validators is that it rlies on function type hence the
 flexibility to use anonymous functions or existent ones. SO IMHO it
 would be really neat to keep the existent validators per Field and if
 you would edd the errorType support would just great.


I think Ive managed to unify the models. There is a new Validator object,
net.liftweb.record.Validator that has an implicit conversion that accepts a
function (anonymous or otherwise) and wraps it in a Validator class with an
errorType. Thus validators can be written as functions or classes, and as
they are wrapped in a class it should be easy enough to add support for
javascript validation.
I can't really test it on the existing Record code, as I can't even manage
to instanciate a simple record. I have however, refactored the immutable
binding code.


 Oh FWIW I'm not a fan of function names starting with capital letters
 such as: def Range(lower: Int, upper: Int, errStr: String)  .. but
 that's just me.


Me neither. Don't know why I did this.



 
  Other things of interest that I found.
 
  Could a Binder be a MetaRecord? There are definitely some similarities.
  Binder holds a set of
  immutable objects which can be an advantage, but MetaRecord can talk to
  databases which is
  kind of useful at times.

 I think we should keep the Meta Record and Record. Please keep in mind
 that MetaRecord and Record have NOTHING to do with database, they are
 completely separated per design so that Records can be also used
 outside of a RDBMS scope. For DB we have DBMetaRecord and DBRecord
 which are not fully implemented yet.

 
  Could a BoundObj be a Field. Same distinction as above. A BoundObj[T] may
  hold a reference to a string value
  that is completely invalid. I'm not sure I see this in Field.


 IMHO I would just add the features that your code has and current code
 does not (such as error type) and put them in the MetaRecord/Record
 (or wherever they belong) and have a single coherent model. Please
 also take a deeper look on the existent code, in MetaRecord, Record,
 Fields implementations Not DB Fields) and see what goodies can be
 added from your new code.

 And integrating client side validations (as Dave suggested) in the
 same model would be really cool.

 
  cheers
  Oliver
 
  On Fri, May 29, 2009 at 6:22 PM, marius d. marius.dan...@gmail.com
 wrote:
 
   I see ... still the question remains. What are we going to do with two
   validators? I'd like to understand the principles of your addition
   (... I know I should have dig into the code but I don't have much time
   now).
 
   I'd like to understand as I said previously if we have redundant
   validators or complementary functionality so that people to not get
   confused.
 
   I'm not trying at all to be negative or anything, just trying to
   understand the value added.
 
   Br's,
   Marius
 
   On May 29, 11:01 am, Oliver Lambert olambo...@gmail.com wrote:
I'm aware of S.error and my ValidationError uses it when I'm ready to
   show
errors. I've briefly looked at the ValidationFunction and the thing I
   might
stumble on is the errorType which I rely on.
 
I may be able to refactor the code to use List[FieldError] as I don't
   think
I rely on errorType at this point.
 
I'll have a go at modifying the Binder code.
 
cheers
Oliver
 
On Fri, May 29, 2009 at 5:05 PM, Marius marius.dan...@gmail.com
 wrote:
 
 Oliver,
 
 I very briefly looked on your code and I saw that you have your own
 validator there. How would that play with the existent validattors
 that Record has where each field has

[Lift] Re: git ouch

2009-05-29 Thread Oliver Lambert
I got that list of commands wrong, what I typed, was

git clone g...@github.com:dpp/liftweb.git
git branch wip-ol-immu
git checkout wip-ol-immu
git push origin wip-ol-immu

When I do a git branch -a, I get two wip-ol-immu
  master
* wip-ol-immu
  origin/1.0_maint
  origin/HEAD
  origin/master
  origin/new_actor
  origin/wip-boolean-can
  origin/wip-dcb-derby-binary
  origin/wip-dcb-jpa-jta
  origin/wip-dcb-jpa-validation
  origin/wip-dcb-lift-jpa
  origin/wip-dpp-record
  origin/wip-marius-dom-optimizations
  origin/wip-ol-immu
  origin/wip-prettify
  origin/wip-record2-dpp

On Fri, May 29, 2009 at 3:50 PM, Oliver Lambert olambo...@gmail.com wrote:

 When I look at the liftweb network graph, it looks like I'm working on the
 main liftweb master line and have renamed it.


 On Fri, May 29, 2009 at 3:38 PM, Derek Chen-Becker 
 dchenbec...@gmail.comwrote:

 I just looked at Git and I show a proper branch there (wip-ol-immu)
 committed about 30 minutes ago. Are you seeing some error on your end?

 Derek


 On Thu, May 28, 2009 at 11:19 PM, Oliver Lambert olambo...@gmail.comwrote:

 Git wouldn't let me create a branch of liftweb until I deleted and
 recreated my ssh keys - I believed all was good.

 I thought I was following the documentation, to create my own branch,
 which appeared to be correct on my machine. But, when I just pushed what I
 thought was my branch, I appear to have done something wrong. Any help
 (without curses) is greatly appreciated at this moment.

 cheers
 Oliver




 



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[Lift] Re: git ouch

2009-05-29 Thread Oliver Lambert
I have a problem with breaking a build on my first attempt of working with
git. I'm happy if I haven't, but what was concerning me was in the included
image (the network line looks like wip-ol-immu is directly next to master,
rather than on a separate branch - if this is normal, Im happy)

On Fri, May 29, 2009 at 4:22 PM, Heiko Seeberger 
heiko.seeber...@googlemail.com wrote:

 Oliver,
 But that's perfect! What's your problem?

 There is one LOCAL wip-ol-immu branch and one REMOTE. That's how it is
 expected to be for a branch you pushed.

 Heiko

 2009/5/29 Oliver Lambert olambo...@gmail.com

 I got that list of commands wrong, what I typed, was

 git clone g...@github.com:dpp/liftweb.git
 git branch wip-ol-immu
 git checkout wip-ol-immu
 git push origin wip-ol-immu

 When I do a git branch -a, I get two wip-ol-immu
   master
 * wip-ol-immu
   origin/1.0_maint
   origin/HEAD
   origin/master
   origin/new_actor
   origin/wip-boolean-can
   origin/wip-dcb-derby-binary
   origin/wip-dcb-jpa-jta
   origin/wip-dcb-jpa-validation
   origin/wip-dcb-lift-jpa
   origin/wip-dpp-record
   origin/wip-marius-dom-optimizations
   origin/wip-ol-immu
   origin/wip-prettify
   origin/wip-record2-dpp





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attachment: wip-ol.jpg

[Lift] Re: Record with the new bind-immutable

2009-05-29 Thread Oliver Lambert
I'm aware of S.error and my ValidationError uses it when I'm ready to show
errors. I've briefly looked at the ValidationFunction and the thing I might
stumble on is the errorType which I rely on.

I may be able to refactor the code to use List[FieldError] as I don't think
I rely on errorType at this point.

I'll have a go at modifying the Binder code.

cheers
Oliver

On Fri, May 29, 2009 at 5:05 PM, Marius marius.dan...@gmail.com wrote:


 Oliver,

 I very briefly looked on your code and I saw that you have your own
 validator there. How would that play with the existent validattors
 that Record has where each field has a list of :

 type ValidationFunction = MyType = Box[Node]

 Note that current MetaRecord's validator after evaluating the
 validators for each field it yields a List[FieldError] which can be
 easily naturally used with S.error function to show the error messages
 etc.

 Is there a redundancy or complementary functionality?

 Br's,
 Marius
 


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[Lift] Re: Record with the new bind-immutable

2009-05-29 Thread Oliver Lambert
Hi Marius,
To try and answer your question, I had to go and look at the Record code in
more detail. I hadn't recently written the Binder Validator, so it wasn't
designed to be
complementary to anything else (however, some of the naming and methodology
is very
similar in both sets of code).

What I found.
1) MetaRecord.validate === Binder.validate
2) Field.validators === BoundObj.validations
3) Field.validationFunction === Validator.validate
4) List[FieldError]  === List[ValidationError]

Can I get rid of Binder Validation and just use Record/Field validation?
It certainly looks like I should try. However, I might have to add/change
some of the original Lift code.
For instance, I might want to add an errorType (with a default, so no code
is broken) to FieldError.
I might also want to move/change Field.validationFunction so its a little
more
like my Validator,with an errorType and toString (When I print my
validators, the errorType give a little
information on what they do, rather than just telling me I have a function -
I also filter using
the errorType)

Other things of interest that I found.

Could a Binder be a MetaRecord? There are definitely some similarities.
Binder holds a set of
immutable objects which can be an advantage, but MetaRecord can talk to
databases which is
kind of useful at times.

Could a BoundObj be a Field. Same distinction as above. A BoundObj[T] may
hold a reference to a string value
that is completely invalid. I'm not sure I see this in Field.

cheers
Oliver

On Fri, May 29, 2009 at 6:22 PM, marius d. marius.dan...@gmail.com wrote:


 I see ... still the question remains. What are we going to do with two
 validators? I'd like to understand the principles of your addition
 (... I know I should have dig into the code but I don't have much time
 now).

 I'd like to understand as I said previously if we have redundant
 validators or complementary functionality so that people to not get
 confused.

 I'm not trying at all to be negative or anything, just trying to
 understand the value added.

 Br's,
 Marius

 On May 29, 11:01 am, Oliver Lambert olambo...@gmail.com wrote:
  I'm aware of S.error and my ValidationError uses it when I'm ready to
 show
  errors. I've briefly looked at the ValidationFunction and the thing I
 might
  stumble on is the errorType which I rely on.
 
  I may be able to refactor the code to use List[FieldError] as I don't
 think
  I rely on errorType at this point.
 
  I'll have a go at modifying the Binder code.
 
  cheers
  Oliver
 
  On Fri, May 29, 2009 at 5:05 PM, Marius marius.dan...@gmail.com wrote:
 
   Oliver,
 
   I very briefly looked on your code and I saw that you have your own
   validator there. How would that play with the existent validattors
   that Record has where each field has a list of :
 
   type ValidationFunction = MyType = Box[Node]
 
   Note that current MetaRecord's validator after evaluating the
   validators for each field it yields a List[FieldError] which can be
   easily naturally used with S.error function to show the error messages
   etc.
 
   Is there a redundancy or complementary functionality?
 
   Br's,
   Marius
 


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[Lift] Re: Record with the new bind-immutable

2009-05-29 Thread Oliver Lambert
Oh, and I think I now have a better understanding of why David wanted me to
add this to the Record module.

On Fri, May 29, 2009 at 11:32 PM, Oliver Lambert olambo...@gmail.comwrote:

 Hi Marius,
 To try and answer your question, I had to go and look at the Record code
 in
 more detail. I hadn't recently written the Binder Validator, so it wasn't
 designed to be
 complementary to anything else (however, some of the naming and methodology
 is very
 similar in both sets of code).

 What I found.
 1) MetaRecord.validate === Binder.validate
 2) Field.validators === BoundObj.validations
 3) Field.validationFunction === Validator.validate
 4) List[FieldError]  === List[ValidationError]

 Can I get rid of Binder Validation and just use Record/Field validation?
 It certainly looks like I should try. However, I might have to add/change
 some of the original Lift code.
 For instance, I might want to add an errorType (with a default, so no code
 is broken) to FieldError.
 I might also want to move/change Field.validationFunction so its a little
 more
 like my Validator,with an errorType and toString (When I print my
 validators, the errorType give a little
 information on what they do, rather than just telling me I have a function
 - I also filter using
 the errorType)

 Other things of interest that I found.

 Could a Binder be a MetaRecord? There are definitely some similarities.
 Binder holds a set of
 immutable objects which can be an advantage, but MetaRecord can talk to
 databases which is
 kind of useful at times.

 Could a BoundObj be a Field. Same distinction as above. A BoundObj[T] may
 hold a reference to a string value
 that is completely invalid. I'm not sure I see this in Field.

 cheers
 Oliver

 On Fri, May 29, 2009 at 6:22 PM, marius d. marius.dan...@gmail.comwrote:


 I see ... still the question remains. What are we going to do with two
 validators? I'd like to understand the principles of your addition
 (... I know I should have dig into the code but I don't have much time
 now).

 I'd like to understand as I said previously if we have redundant
 validators or complementary functionality so that people to not get
 confused.

 I'm not trying at all to be negative or anything, just trying to
 understand the value added.

 Br's,
 Marius

 On May 29, 11:01 am, Oliver Lambert olambo...@gmail.com wrote:
  I'm aware of S.error and my ValidationError uses it when I'm ready to
 show
  errors. I've briefly looked at the ValidationFunction and the thing I
 might
  stumble on is the errorType which I rely on.
 
  I may be able to refactor the code to use List[FieldError] as I don't
 think
  I rely on errorType at this point.
 
  I'll have a go at modifying the Binder code.
 
  cheers
  Oliver
 
  On Fri, May 29, 2009 at 5:05 PM, Marius marius.dan...@gmail.com
 wrote:
 
   Oliver,
 
   I very briefly looked on your code and I saw that you have your own
   validator there. How would that play with the existent validattors
   that Record has where each field has a list of :
 
   type ValidationFunction = MyType = Box[Node]
 
   Note that current MetaRecord's validator after evaluating the
   validators for each field it yields a List[FieldError] which can be
   easily naturally used with S.error function to show the error messages
   etc.
 
   Is there a redundancy or complementary functionality?
 
   Br's,
   Marius
 



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[Lift] Re: Record with the new bind-immutable

2009-05-29 Thread Oliver Lambert
That would be very cool

On Fri, May 29, 2009 at 11:37 PM, David Pollak 
feeder.of.the.be...@gmail.com wrote:

 One thing I've been thinking about is optionally extending the Validator
 Functions to also emit JavaScript that would perform the validation in the
 browser... that would provide a seamless way to do client-side validation
 for validators (e.g., min len, max len, regex) that only rely on client-side
 data.


 On Fri, May 29, 2009 at 6:32 AM, Oliver Lambert olambo...@gmail.comwrote:

 Hi Marius,
 To try and answer your question, I had to go and look at the Record code
 in
 more detail. I hadn't recently written the Binder Validator, so it wasn't
 designed to be
 complementary to anything else (however, some of the naming and
 methodology is very
 similar in both sets of code).

 What I found.
 1) MetaRecord.validate === Binder.validate
 2) Field.validators === BoundObj.validations
 3) Field.validationFunction === Validator.validate
 4) List[FieldError]  === List[ValidationError]

 Can I get rid of Binder Validation and just use Record/Field validation?
 It certainly looks like I should try. However, I might have to add/change
 some of the original Lift code.
 For instance, I might want to add an errorType (with a default, so no code
 is broken) to FieldError.
 I might also want to move/change Field.validationFunction so its a little
 more
 like my Validator,with an errorType and toString (When I print my
 validators, the errorType give a little
 information on what they do, rather than just telling me I have a function
 - I also filter using
 the errorType)

 Other things of interest that I found.

 Could a Binder be a MetaRecord? There are definitely some similarities.
 Binder holds a set of
 immutable objects which can be an advantage, but MetaRecord can talk to
 databases which is
 kind of useful at times.

 Could a BoundObj be a Field. Same distinction as above. A BoundObj[T] may
 hold a reference to a string value
 that is completely invalid. I'm not sure I see this in Field.

 cheers
 Oliver

 On Fri, May 29, 2009 at 6:22 PM, marius d. marius.dan...@gmail.comwrote:


 I see ... still the question remains. What are we going to do with two
 validators? I'd like to understand the principles of your addition
 (... I know I should have dig into the code but I don't have much time
 now).

 I'd like to understand as I said previously if we have redundant
 validators or complementary functionality so that people to not get
 confused.

 I'm not trying at all to be negative or anything, just trying to
 understand the value added.

 Br's,
 Marius

 On May 29, 11:01 am, Oliver Lambert olambo...@gmail.com wrote:
  I'm aware of S.error and my ValidationError uses it when I'm ready to
 show
  errors. I've briefly looked at the ValidationFunction and the thing I
 might
  stumble on is the errorType which I rely on.
 
  I may be able to refactor the code to use List[FieldError] as I don't
 think
  I rely on errorType at this point.
 
  I'll have a go at modifying the Binder code.
 
  cheers
  Oliver
 
  On Fri, May 29, 2009 at 5:05 PM, Marius marius.dan...@gmail.com
 wrote:
 
   Oliver,
 
   I very briefly looked on your code and I saw that you have your own
   validator there. How would that play with the existent validattors
   that Record has where each field has a list of :
 
   type ValidationFunction = MyType = Box[Node]
 
   Note that current MetaRecord's validator after evaluating the
   validators for each field it yields a List[FieldError] which can be
   easily naturally used with S.error function to show the error
 messages
   etc.
 
   Is there a redundancy or complementary functionality?
 
   Br's,
   Marius







 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp


 


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[Lift] git ouch

2009-05-28 Thread Oliver Lambert
Git wouldn't let me create a branch of liftweb until I deleted and recreated
my ssh keys - I believed all was good.

I thought I was following the documentation, to create my own branch, which
appeared to be correct on my machine. But, when I just pushed what I thought
was my branch, I appear to have done something wrong. Any help (without
curses) is greatly appreciated at this moment.

cheers
Oliver

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[Lift] Re: git ouch

2009-05-28 Thread Oliver Lambert
The following sequence, without various commits

git clone g...@github.com:dpp/liftweb.git
git branch wip-ol-immugit checkout wip-ol-immu
git checkout wip-ol-immu
git push origin wip-ol-immu

The git network now looks wrong. Where did I stuff up?


On Fri, May 29, 2009 at 3:29 PM, Heiko Seeberger 
heiko.seeber...@googlemail.com wrote:

 Some more details, please: What git commands did you enter?

 2009/5/29 Oliver Lambert olambo...@gmail.com

 Git wouldn't let me create a branch of liftweb until I deleted and
 recreated my ssh keys - I believed all was good.

 I thought I was following the documentation, to create my own branch,
 which appeared to be correct on my machine. But, when I just pushed what I
 thought was my branch, I appear to have done something wrong. Any help
 (without curses) is greatly appreciated at this moment.

 cheers
 Oliver





 --
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 Follow me: twitter.com/hseeberger
 OSGi on Scala: www.scalamodules.org
 Lift, the simply functional web framework: liftweb.net

 


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[Lift] Re: git ouch

2009-05-28 Thread Oliver Lambert
When I look at the liftweb network graph, it looks like I'm working on the
main liftweb master line and have renamed it.

On Fri, May 29, 2009 at 3:38 PM, Derek Chen-Becker dchenbec...@gmail.comwrote:

 I just looked at Git and I show a proper branch there (wip-ol-immu)
 committed about 30 minutes ago. Are you seeing some error on your end?

 Derek


 On Thu, May 28, 2009 at 11:19 PM, Oliver Lambert olambo...@gmail.comwrote:

 Git wouldn't let me create a branch of liftweb until I deleted and
 recreated my ssh keys - I believed all was good.

 I thought I was following the documentation, to create my own branch,
 which appeared to be correct on my machine. But, when I just pushed what I
 thought was my branch, I appear to have done something wrong. Any help
 (without curses) is greatly appreciated at this moment.

 cheers
 Oliver




 


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[Lift] Re: immutable bindings

2009-05-27 Thread Oliver Lambert
I've pushed my changes and additions back to my branch, hopefully for all to
see (still learning git). I'll write an example app based on the changes
soon.

cheers
Oliver

On Tue, May 19, 2009 at 9:14 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:

 Oliver,

 Good stuff... please make sure that your branch is available on the GitHub
 repository for all to see and use.

 Thanks,

 David


 On Sat, May 16, 2009 at 1:36 AM, Oliver Lambert olambo...@gmail.comwrote:



 On Sat, May 16, 2009 at 4:32 AM, David Pollak 
 feeder.of.the.be...@gmail.com wrote:



 On Thu, May 14, 2009 at 7:43 PM, Oliver Lambert olambo...@gmail.comwrote:

 I've started integrating my immutable bindings, but have some questions

 On my build, I've placed the main immutable binding classes in module
 lift webkit under package net.liftweb.http.immu.
 Is that location/name OK?


 If there's stuff that does not reference other stuff in the http classes,
 please put it in net.liftweb.util.  How many classes do you have?  Can we
 put it in net.liftweb.record instead?  I'm thinking your work might form the
 basis for some of the record stuff.


 I'll put what I can in net.liftweb.util. I guess there are about 10
 classes, but I'll probably put these in a few files. I like the idea of
 using net.liftweb.record - I'll start to study the record methodology, also.



 I would like to introduce a new set of currency classes, roughly based
 on Martin et al's Currency Zone example in their book. Derek, is using an
 earlier version of it in his JPA example, Ive simplified it a little and
 extended it to include a few different currencies. Is this OK? - I know
 there is a simple currency class already.


 Sure.  I'm pretty sure the existing currency class in net.liftweb.util is
 unused, so if you want to break that class, that might be a good place to
 put your code.


 cool, will do



 I'm not sure what to do about the mixin binding that I use for html,
 that extends/modifies BindHelpers.


 Put it in BindHelpers... as long as it doesn't break any of the existing
 APIs.


 ok, I might go slowly on this bit.



 Potentially I could modify BindHelpers, but, should I leave it out for
 now or include it as an optional and separate class in
 net.liftweb.html.immu?

 cheers
 Oliver






 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp








 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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Fwd: [Lift] Re: immutable bindings

2009-05-27 Thread Oliver Lambert
Added immutable binding example application to sites module, in my branch
(didn't take long, must have done something right).

-- Forwarded message --
From: Oliver Lambert olambo...@gmail.com
Date: Wed, May 27, 2009 at 4:16 PM
Subject: Re: [Lift] Re: immutable bindings
To: liftweb@googlegroups.com


I've pushed my changes and additions back to my branch, hopefully for all to
see (still learning git). I'll write an example app based on the changes
soon.

cheers
Oliver


On Tue, May 19, 2009 at 9:14 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:

 Oliver,

 Good stuff... please make sure that your branch is available on the GitHub
 repository for all to see and use.

 Thanks,

 David


 On Sat, May 16, 2009 at 1:36 AM, Oliver Lambert olambo...@gmail.comwrote:



 On Sat, May 16, 2009 at 4:32 AM, David Pollak 
 feeder.of.the.be...@gmail.com wrote:



 On Thu, May 14, 2009 at 7:43 PM, Oliver Lambert olambo...@gmail.comwrote:

 I've started integrating my immutable bindings, but have some questions

 On my build, I've placed the main immutable binding classes in module
 lift webkit under package net.liftweb.http.immu.
 Is that location/name OK?


 If there's stuff that does not reference other stuff in the http classes,
 please put it in net.liftweb.util.  How many classes do you have?  Can we
 put it in net.liftweb.record instead?  I'm thinking your work might form the
 basis for some of the record stuff.


 I'll put what I can in net.liftweb.util. I guess there are about 10
 classes, but I'll probably put these in a few files. I like the idea of
 using net.liftweb.record - I'll start to study the record methodology, also.



 I would like to introduce a new set of currency classes, roughly based
 on Martin et al's Currency Zone example in their book. Derek, is using an
 earlier version of it in his JPA example, Ive simplified it a little and
 extended it to include a few different currencies. Is this OK? - I know
 there is a simple currency class already.


 Sure.  I'm pretty sure the existing currency class in net.liftweb.util is
 unused, so if you want to break that class, that might be a good place to
 put your code.


 cool, will do



 I'm not sure what to do about the mixin binding that I use for html,
 that extends/modifies BindHelpers.


 Put it in BindHelpers... as long as it doesn't break any of the existing
 APIs.


 ok, I might go slowly on this bit.



 Potentially I could modify BindHelpers, but, should I leave it out for
 now or include it as an optional and separate class in
 net.liftweb.html.immu?

 cheers
 Oliver






 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp








 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: Robust and clear ways to do performant JDBC?

2009-05-23 Thread Oliver Lambert
Yes, I helped with the code!

On Sat, May 23, 2009 at 9:28 PM, Timothy Perrett timo...@getintheloop.euwrote:



 To what degree are you wanting to re-invent the wheel? Derek has done
 amazing work with JPA and Scala - the resulting output being scala-jpa and
 the jpa archetypes for lift. Are you familiar with them?

 Cheers, Tim

 On 23/05/2009 11:56, Oliver Lambert olambo...@gmail.com wrote:

  JPA is a ORM tool. I think it would be great if someone would create a
  Scala solution using JPA as the starting point - any takers?
 



 


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[Lift] Re: Robust and clear ways to do performant JDBC?

2009-05-23 Thread Oliver Lambert
When I want to have user defined types, I have to write them as a Hibernate
hack to JPA - Id rather not be wedded to Hibernate.When I get a collection
out of a returned entity, I have to use JCL to wrap it. I'd rather, have
everything in Scala collections.
When I have a read only entity, I'd like it to be immutable. In fact, maybe
all entities should be, but thats probably too hard.
I'm just taking about the lower layer of JPA that Derek's stuff hooks into -
its OK for Java, it kind of sucks for Scala.

Just my thoughts, don't expect anyone to agree.

cheers
Oliver

On Sat, May 23, 2009 at 9:41 PM, Timothy Perrett timo...@getintheloop.euwrote:


 Lol! Sorry oliver... I remember now :)

 What did you have in mind for “scala solution using JPA”? Is this not what
 we have already?

 Cheers, Tim


 On 23/05/2009 12:33, Oliver Lambert olambo...@gmail.com wrote:

 Yes, I helped with the code!

 On Sat, May 23, 2009 at 9:28 PM, Timothy Perrett timo...@getintheloop.eu
 wrote:



 To what degree are you wanting to re-invent the wheel? Derek has done
 amazing work with JPA and Scala - the resulting output being scala-jpa and
 the jpa archetypes for lift. Are you familiar with them?

 Cheers, Tim

 On 23/05/2009 11:56, Oliver Lambert olambo...@gmail.com wrote:

  JPA is a ORM tool. I think it would be great if someone would create a
  Scala solution using JPA as the starting point - any takers?
 









 


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[Lift] Re: immutable bindings

2009-05-16 Thread Oliver Lambert
On Sat, May 16, 2009 at 4:32 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:



 On Thu, May 14, 2009 at 7:43 PM, Oliver Lambert olambo...@gmail.comwrote:

 I've started integrating my immutable bindings, but have some questions

 On my build, I've placed the main immutable binding classes in module lift
 webkit under package net.liftweb.http.immu.
 Is that location/name OK?


 If there's stuff that does not reference other stuff in the http classes,
 please put it in net.liftweb.util.  How many classes do you have?  Can we
 put it in net.liftweb.record instead?  I'm thinking your work might form the
 basis for some of the record stuff.


I'll put what I can in net.liftweb.util. I guess there are about 10 classes,
but I'll probably put these in a few files. I like the idea of using
net.liftweb.record - I'll start to study the record methodology, also.



 I would like to introduce a new set of currency classes, roughly based on
 Martin et al's Currency Zone example in their book. Derek, is using an
 earlier version of it in his JPA example, Ive simplified it a little and
 extended it to include a few different currencies. Is this OK? - I know
 there is a simple currency class already.


 Sure.  I'm pretty sure the existing currency class in net.liftweb.util is
 unused, so if you want to break that class, that might be a good place to
 put your code.


cool, will do



 I'm not sure what to do about the mixin binding that I use for html, that
 extends/modifies BindHelpers.


 Put it in BindHelpers... as long as it doesn't break any of the existing
 APIs.


ok, I might go slowly on this bit.



 Potentially I could modify BindHelpers, but, should I leave it out for now
 or include it as an optional and separate class in net.liftweb.html.immu?

 cheers
 Oliver






 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: immutable bindings

2009-05-11 Thread Oliver Lambert
I've created a git branch, cloned it on my machine and built lift - built in
9 minutes with no errors (1 more tick for maven). Will go wild soon.

On Tue, May 12, 2009 at 9:26 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:

 Oliver,

 Please create a git branch and go wild on the branch... once you're
 comfortable with it, please roll the changes into the main branch.

 Thanks,

 David




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[Lift] Re: garbage collection

2009-05-08 Thread Oliver Lambert
On Fri, May 8, 2009 at 6:51 AM, marius d. marius.dan...@gmail.com wrote:


 Personally I'd be very reluctant exposing that to applications as this
 is Lift implementation specific and exposing an API tight to that
 leads to unnecessary coupling.


While I don't like unnecessary coupling, either, I do like simple profiling.



 But why do you really need this? ... just for statistical
 purposes? ... I'm not sure about the relevance of such number.


I want to get an idea about the growth of functions stored in the session.
I
have a idea that might cut the number of functions, under certain
circumstances.


 Br's,
 Marius

 On May 7, 10:22 pm, Oliver Lambert olambo...@gmail.com wrote:
  Any chance of exposing a getter on messageCallback that would return some
  statistics (the number of functions being stored would be a good starting
  point)?
 
  On Thu, May 7, 2009 at 11:21 PM, marius d. marius.dan...@gmail.com
 wrote:
 
   Just FYI ...
 
   Things in this area are may change a bit once JQuery fixes the bug
   related with namespaces.This was the main reason why we had to deviate
   from Dave's original idea of using lift:gc attributes.
 
   Br's,
   Marius
 
   On May 7, 3:47 pm, Oliver Lambert olambo...@gmail.com wrote:
Ah, you mean messageCallback - The joys of private variables.
thanks again
Ol
 
On Thu, May 7, 2009 at 9:55 PM, marius d. marius.dan...@gmail.com
   wrote:
 
 Please see LiftSession.
 
 On May 7, 1:41 pm, Oliver Lambert olambo...@gmail.com wrote:
  Thanks for this. I would like to look at the code that actually
 holds
   the
  storage container and profile it. Any pointers on which class to
 look
   at
 s a
  starting point?
  Ol
 
  On Thu, May 7, 2009 at 7:17 PM, marius d. 
 marius.dan...@gmail.com
 wrote:
 
   In short the current Lift GC is:
 
   1. Each page has an ID
   2. Each mapped function is associated with the page ID
   3. There are periodical Ajax request sent from the page that
 are
   refreshing the timestamps on the mapped functions
   4. Mapped functions that exceeded the expiration time are de-
   referenced hence become eligible for garbage collector.
 
   Br's,
   Marius
 
   On May 7, 10:15 am, Oliver Lambert olambo...@gmail.com
 wrote:
I'm trying to get an understanding how garbage collection is
 implemented
   in
Lift.
Any pointers on what scala classes do the actual work?
 
While I'm at it, S.functionMap appears to only return
 functions
   that
 were
recently bound. Does S._functionMap, contain the functions
   being
   garbage
collected?
 
cheers
Oliver
 


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[Lift] garbage collection

2009-05-07 Thread Oliver Lambert
I'm trying to get an understanding how garbage collection is implemented in
Lift.
Any pointers on what scala classes do the actual work?

While I'm at it, S.functionMap appears to only return functions that were
recently bound. Does S._functionMap, contain the functions being garbage
collected?

cheers
Oliver

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[Lift] Re: garbage collection

2009-05-07 Thread Oliver Lambert
Thanks for this. I would like to look at the code that actually holds the
storage container and profile it. Any pointers on which class to look at s a
starting point?
Ol

On Thu, May 7, 2009 at 7:17 PM, marius d. marius.dan...@gmail.com wrote:


 In short the current Lift GC is:

 1. Each page has an ID
 2. Each mapped function is associated with the page ID
 3. There are periodical Ajax request sent from the page that are
 refreshing the timestamps on the mapped functions
 4. Mapped functions that exceeded the expiration time are de-
 referenced hence become eligible for garbage collector.


 Br's,
 Marius

 On May 7, 10:15 am, Oliver Lambert olambo...@gmail.com wrote:
  I'm trying to get an understanding how garbage collection is implemented
 in
  Lift.
  Any pointers on what scala classes do the actual work?
 
  While I'm at it, S.functionMap appears to only return functions that were
  recently bound. Does S._functionMap, contain the functions being
 garbage
  collected?
 
  cheers
  Oliver
 


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[Lift] Re: garbage collection

2009-05-07 Thread Oliver Lambert
Ah, you mean messageCallback - The joys of private variables.
thanks again
Ol

On Thu, May 7, 2009 at 9:55 PM, marius d. marius.dan...@gmail.com wrote:


 Please see LiftSession.

 On May 7, 1:41 pm, Oliver Lambert olambo...@gmail.com wrote:
  Thanks for this. I would like to look at the code that actually holds the
  storage container and profile it. Any pointers on which class to look at
 s a
  starting point?
  Ol
 
  On Thu, May 7, 2009 at 7:17 PM, marius d. marius.dan...@gmail.com
 wrote:
 
   In short the current Lift GC is:
 
   1. Each page has an ID
   2. Each mapped function is associated with the page ID
   3. There are periodical Ajax request sent from the page that are
   refreshing the timestamps on the mapped functions
   4. Mapped functions that exceeded the expiration time are de-
   referenced hence become eligible for garbage collector.
 
   Br's,
   Marius
 
   On May 7, 10:15 am, Oliver Lambert olambo...@gmail.com wrote:
I'm trying to get an understanding how garbage collection is
 implemented
   in
Lift.
Any pointers on what scala classes do the actual work?
 
While I'm at it, S.functionMap appears to only return functions that
 were
recently bound. Does S._functionMap, contain the functions being
   garbage
collected?
 
cheers
Oliver
 


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[Lift] Re: Where to add demos/examples

2009-05-02 Thread Oliver Lambert
Oh dear, sorry didn't realize I was butting in on committers talk.

On Sat, May 2, 2009 at 11:20 PM, David Pollak feeder.of.the.be...@gmail.com
 wrote:



 On Sat, May 2, 2009 at 5:09 AM, Timothy Perrett 
 timo...@getintheloop.euwrote:



 Heiko,

 Please see here: http://is.gd/w5SB


 +1



 We've talked before on the committers list about renaming sites to
 examples or such, so I see no reason why putting any working example you
 want in there. POC would probably be a different matter... If its not
 working code, host it on your own github account then when its working
 potentially move it into examples if appropriate.

 Cheers, Tim



 On 02/05/2009 12:53, Oliver Lambert olambo...@gmail.com wrote:

  Interesting idea, perhaps you could get the examples hosted on the lift
 demo
  website too.
 
  Oliver
 
  On Sat, May 2, 2009 at 7:48 PM, Heiko Seeberger
  heiko.seeber...@googlemail.com wrote:
  Hi,
 
  I would like to add demo/example (well, also POC) projects to the
 repository.
  Where would be the right place?
 
  1. Into the repository root
  2. Into a lift-examples module
  3. Other alternatives?
 
  I think I would like to go for lift-examples and maybe have nested
 modules
  there, e.g.
  lift-examples
lift-examples-osgi
  lift-examples-osgi-hello
  ...
 
  What do you think?
 
  Heiko







 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp


 


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[Lift] Re: immutable bindings

2009-04-30 Thread Oliver Lambert
I just realized, I removed the header comments to the classes under the
package scalame and had removed credit to Lift for SBind (modifying Bind).
 My apologies, and I understand my code is nowhere near as well written as
the original.

Oliver

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[Lift] Re: scalar queries in Lift/JPA

2009-04-25 Thread Oliver Lambert
Sorry, I didn't get back sooner - too much work!
No one told me I couldn't do this so I just did it. Create a dummy entity to
a table/view that doesn't exist - then write a query that uses column
aliases and any arbitrary sql to populate that entity. I guess JPA/Hibernate
is just creating an instance of a class and then calling a bunch of setters.

Other times, I've dumped all the hard work on Oracle programmers, getting
them to create a set of read only views and created entities on them, but I
guess thats less weird.

I've also done a similar thing in using formal constructors via hibernate's
report queries, but thats more work and I'm lazy.

cheers Oliver

On Fri, Apr 24, 2009 at 6:11 AM, Derek Chen-Becker dchenbec...@gmail.comwrote:

 Oliver, I've never done anything like that in JPA or Hibernate. Is that
 actually possible? Can you create a class instance within a query?

 Derek


 On Thu, Apr 23, 2009 at 2:47 PM, Charles F. Munat c...@munat.com wrote:


 I'm not really sure how I would go about this, but I'll think about it
 when I have time to get back to that code.

 Thanks, Oliver.

 Chas.

 Oliver Lambert wrote:
  Is there anything to stop you defining an class/entity {answer: String,
  countAnswer: Int} and to directly create it from JPA (of course, it's
  read only).
 
  On Wed, Apr 22, 2009 at 9:36 AM, Charles F. Munat c...@munat.com
  mailto:c...@munat.com wrote:
 
 
  I was thinking tuples, but that didn't work. I'll try your
 suggestion.
  BTW, for anyone reading along, I forgot the group by clause in the
 query
  below.
 
  Chas.
 
  Derek Chen-Becker wrote:
I think that the type would be Array[Any] and you'll get one
  String and
Int for each row.
   
Derek
   
On Tue, Apr 21, 2009 at 3:37 PM, Charles F. Munat 
 c...@munat.com
  mailto:c...@munat.com
mailto:c...@munat.com mailto:c...@munat.com wrote:
   
   
Anyone have a quick example of how to run a scalar query in
  JPA? I can't
find anything in the JPA demo.
   
I have this query:
   
select t.answer, count(distinct answer) from Vote t where
  t.poll = :poll
order by t.answer
   
but how do I call it? I normally do:
   
Model.createNamedQuery[...](findVoteCountAnswersByPoll,
  poll -
poll).findAll
   
But what is the type? And how do I get the results back out?
   
I know I did this once before somewhere, but I can't remember
  where and
I can't find it.
   
Thanks!
   
Chas.
   
   
   
   

 
 
 
 
  




 


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[Lift] Re: scalar queries in Lift/JPA

2009-04-23 Thread Oliver Lambert
Is there anything to stop you defining an class/entity {answer: String,
countAnswer: Int} and to directly create it from JPA (of course, it's read
only).

On Wed, Apr 22, 2009 at 9:36 AM, Charles F. Munat c...@munat.com wrote:


 I was thinking tuples, but that didn't work. I'll try your suggestion.
 BTW, for anyone reading along, I forgot the group by clause in the query
 below.

 Chas.

 Derek Chen-Becker wrote:
  I think that the type would be Array[Any] and you'll get one String and
  Int for each row.
 
  Derek
 
  On Tue, Apr 21, 2009 at 3:37 PM, Charles F. Munat c...@munat.com
  mailto:c...@munat.com wrote:
 
 
  Anyone have a quick example of how to run a scalar query in JPA? I
 can't
  find anything in the JPA demo.
 
  I have this query:
 
  select t.answer, count(distinct answer) from Vote t where t.poll =
 :poll
  order by t.answer
 
  but how do I call it? I normally do:
 
  Model.createNamedQuery[...](findVoteCountAnswersByPoll, poll -
  poll).findAll
 
  But what is the type? And how do I get the results back out?
 
  I know I did this once before somewhere, but I can't remember where
 and
  I can't find it.
 
  Thanks!
 
  Chas.
 
 
 
 
  

 


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[Lift] Re: stateful vs stateless snippet

2009-04-13 Thread Oliver Lambert
On Mon, Apr 13, 2009 at 4:35 AM, David Pollak feeder.of.the.be...@gmail.com
 wrote:



 On Sun, Apr 12, 2009 at 7:30 AM, Oliver Lambert olambo...@gmail.comwrote:



 On Sun, Apr 12, 2009 at 11:04 PM, David Pollak 
 feeder.of.the.be...@gmail.com wrote:



 On Sun, Apr 12, 2009 at 5:29 AM, Oliver Lambert olambo...@gmail.comwrote:



 On Sun, Apr 12, 2009 at 3:49 PM, marius d. marius.dan...@gmail.comwrote:


 As I said you CAN use it to span the same snippet instance for
 multiple pages. Please see the two fundamental functions offered by
 StatefulSnippet: link and redirect. Lift book provided correct
 information.


 It can be used, but doesn't always give the same instance when the back
 button is used?
 Therefore, all my fields are reset to null. Is this the expected
 functionality, or a bug (my code or Lift's)?
 I am using Stateful link and redirect and the application works fine,
 apart from the back button.


 If you're using the back button and you're presenting forms to the user,
 what you're seeing is the expected (perhaps not desired) behavior.

 In order to figure out which stateful snippet is being used, Lift either
 inserts a hidden field on the form or adds a parameter to the link URL.  In
 both cases, these hidden items refer to a function that binds the instance
 of the stateful snippet to the name of the snippet so that the same instance
 will be used.  If you press the back button and a URL does not have the
 query parameter, there's no way for Lift to know which instance of the
 stateful snippet to attach to the particular snippet name and Lift creates a
 new one.

 More broadly, I opted to not have ugly URLs in Lift.  Seaside and other
 frameworks that are more stateful than Lift have to put a token in the URL
 indicating the state of the application for that particular URL.  This
 allows you to have multiple instances of a given multi-page form going at
 the same time, all with back-button support.  The cost is ugly URLs and the
 inability to send a given URL to a friend (because the state information is
 part of the URL.)  In Seaside, you have to specify that a particular URL is
 durable and it's not uglified.  In Lift, by default, the URLs are pretty and
 stateless.

 So, you've found a corner case of the downside of this choice.  I'm
 hoping to add wizard functionality to Lift for 1.1 (although it's not on the
 official schedule) and that would give you better statefulness, ugly URLs,
 and better back-button support.

 Thanks,

 David


 Thanks, for explaining the functionality. I was just asked by my boss to
 ask a question, I'm not criticizing Lift for having the occasional corner
 case I don't expect. The fix for the application I'm currently working on is
 to use sessionVars, the occasional requestVar and to remove statefulSnippets
 - probably several hours work.


 Cool.



 In fact, I think I appreciate the design of lift for its flexibility.
 While I use the function binding of Lift, I've abstracted part of it away,
 so much of my code is automatically dealing with immutable objects. Maybe my
 one criticism of Lift is - it almost offers too much choice.


 Yeah.  Rails and Mac are both great and having one true way.  Windows gives
 you the choose what you like.  In general, Mac apps feel more uniform and
 better than Windows apps.


Mac apps often look more professional too - which is kind of funny
considering their market.



 More broadly, I'd like to see how you do more immutable stuff within the
 context of Lift.  I'm still uncomfortable about the the amount of mutability
 floating around in Lift.


Great, I'll create an example project using the methodology I'm using this
week.


 Thanks,

 David



 cheers
 Oliver





 On Apr 12, 5:44 am, Oliver Lambert olambo...@gmail.com wrote:
  On Sun, Apr 12, 2009 at 7:14 AM, marius d. marius.dan...@gmail.com
 wrote:
 
   The StatefulSnippet is not a snippet instance that is always used
 in
   the context of your session.
 
  Yikes! in that case, I wrote a whole application based on false
 assumption.
  It says in the lift book
  a StatefulSnippet is ideal for small, conversational state, such as
 a form
  that spans multiple pages
  If it spans multiple pages, doesn't this kind of imply the same
 instance in
  the session?
 
  Anyway thanks for this info. Any reason why a StatefulSnippet always
 has a
  dispatch function and
  a Stateless one, by default, has not?

 The reason that I see ...
 Stateless snippets are the most used artifacts to attach business
 logic to your view. Because it is so common besides DispatchSnippet
 trait, Lift loads and invoke Snippets functions using reflection.
 Since discriminating at runtime between a stateless and a stateful
 requires a trait (forget about annotations for now) well that trait is
 StatefulSnippet.


 
  to avoid RequestVar-s but keep state for current rendering pipeline
 in
 
   the snippet.
   2. You can indicate that you want to reuse the same instance across
   multiple pages

[Lift] Re: stateful vs stateless snippet

2009-04-12 Thread Oliver Lambert
On Sun, Apr 12, 2009 at 3:49 PM, marius d. marius.dan...@gmail.com wrote:


 As I said you CAN use it to span the same snippet instance for
 multiple pages. Please see the two fundamental functions offered by
 StatefulSnippet: link and redirect. Lift book provided correct
 information.


It can be used, but doesn't always give the same instance when the back
button is used?
Therefore, all my fields are reset to null. Is this the expected
functionality, or a bug (my code or Lift's)?
I am using Stateful link and redirect and the application works fine, apart
from the back button.




 On Apr 12, 5:44 am, Oliver Lambert olambo...@gmail.com wrote:
  On Sun, Apr 12, 2009 at 7:14 AM, marius d. marius.dan...@gmail.com
 wrote:
 
   The StatefulSnippet is not a snippet instance that is always used in
   the context of your session.
 
  Yikes! in that case, I wrote a whole application based on false
 assumption.
  It says in the lift book
  a StatefulSnippet is ideal for small, conversational state, such as a
 form
  that spans multiple pages
  If it spans multiple pages, doesn't this kind of imply the same instance
 in
  the session?
 
  Anyway thanks for this info. Any reason why a StatefulSnippet always has
 a
  dispatch function and
  a Stateless one, by default, has not?

 The reason that I see ...
 Stateless snippets are the most used artifacts to attach business
 logic to your view. Because it is so common besides DispatchSnippet
 trait, Lift loads and invoke Snippets functions using reflection.
 Since discriminating at runtime between a stateless and a stateful
 requires a trait (forget about annotations for now) well that trait is
 StatefulSnippet.


 
  to avoid RequestVar-s but keep state for current rendering pipeline in
 
   the snippet.
   2. You can indicate that you want to reuse the same instance across
   multiple pages using link or redirectTo functions from the
   StatefulSnippet
 
   So depending what you want to doyou can use the statefull or stateless
   nature of snippets. For stateless snippets you can just declare the
   class and the method and just use it. Such as:
 
   class Foo {
 
def bar(xml: NodeSeq) :NodeSeq = ...
   }
 
   .. and in your markup
 
   lift:Foo.bar/
 
   you can also say
 
   class Foo  extends DispatchSniuppet {
 
 def dispatch = ...
   }
 
   which is also a stateless snippet.
 
   Br's,
   Marius
 
   On Apr 11, 7:21 am, Oliver Lambert olambo...@gmail.com wrote:
I have a stateful snippet that doesn't always appear to work with the
   back
button.
Sometimes, when the back button is used, a new stateful snippet
 instance
appears to be created. Has this happened to anyone else?
 
Anyway, I've converted what I had to use a SessionVar to store the
 state.
Should I replace the stateful snippet with a stateless one - does a
   stateful
snippet that isn't storing any state have any extra overhead over a
stateless one?
 
If I do use a stateless snipet can I still have a dispatch method?
 
cheers
Oliver
 


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[Lift] Re: stateful vs stateless snippet

2009-04-12 Thread Oliver Lambert
On Sun, Apr 12, 2009 at 11:04 PM, David Pollak 
feeder.of.the.be...@gmail.com wrote:



 On Sun, Apr 12, 2009 at 5:29 AM, Oliver Lambert olambo...@gmail.comwrote:



 On Sun, Apr 12, 2009 at 3:49 PM, marius d. marius.dan...@gmail.comwrote:


 As I said you CAN use it to span the same snippet instance for
 multiple pages. Please see the two fundamental functions offered by
 StatefulSnippet: link and redirect. Lift book provided correct
 information.


 It can be used, but doesn't always give the same instance when the back
 button is used?
 Therefore, all my fields are reset to null. Is this the expected
 functionality, or a bug (my code or Lift's)?
 I am using Stateful link and redirect and the application works fine,
 apart from the back button.


 If you're using the back button and you're presenting forms to the user,
 what you're seeing is the expected (perhaps not desired) behavior.

 In order to figure out which stateful snippet is being used, Lift either
 inserts a hidden field on the form or adds a parameter to the link URL.  In
 both cases, these hidden items refer to a function that binds the instance
 of the stateful snippet to the name of the snippet so that the same instance
 will be used.  If you press the back button and a URL does not have the
 query parameter, there's no way for Lift to know which instance of the
 stateful snippet to attach to the particular snippet name and Lift creates a
 new one.

 More broadly, I opted to not have ugly URLs in Lift.  Seaside and other
 frameworks that are more stateful than Lift have to put a token in the URL
 indicating the state of the application for that particular URL.  This
 allows you to have multiple instances of a given multi-page form going at
 the same time, all with back-button support.  The cost is ugly URLs and the
 inability to send a given URL to a friend (because the state information is
 part of the URL.)  In Seaside, you have to specify that a particular URL is
 durable and it's not uglified.  In Lift, by default, the URLs are pretty and
 stateless.

 So, you've found a corner case of the downside of this choice.  I'm hoping
 to add wizard functionality to Lift for 1.1 (although it's not on the
 official schedule) and that would give you better statefulness, ugly URLs,
 and better back-button support.

 Thanks,

 David


Thanks, for explaining the functionality. I was just asked by my boss to ask
a question, I'm not criticizing Lift for having the occasional corner case I
don't expect. The fix for the application I'm currently working on is to use
sessionVars, the occasional requestVar and to remove statefulSnippets -
probably several hours work.

In fact, I think I appreciate the design of lift for its flexibility. While
I use the function binding of Lift, I've abstracted part of it away, so much
of my code is automatically dealing with immutable objects. Maybe my
one criticism of Lift is - it almost offers too much choice.

cheers
Oliver





 On Apr 12, 5:44 am, Oliver Lambert olambo...@gmail.com wrote:
  On Sun, Apr 12, 2009 at 7:14 AM, marius d. marius.dan...@gmail.com
 wrote:
 
   The StatefulSnippet is not a snippet instance that is always used in
   the context of your session.
 
  Yikes! in that case, I wrote a whole application based on false
 assumption.
  It says in the lift book
  a StatefulSnippet is ideal for small, conversational state, such as a
 form
  that spans multiple pages
  If it spans multiple pages, doesn't this kind of imply the same
 instance in
  the session?
 
  Anyway thanks for this info. Any reason why a StatefulSnippet always
 has a
  dispatch function and
  a Stateless one, by default, has not?

 The reason that I see ...
 Stateless snippets are the most used artifacts to attach business
 logic to your view. Because it is so common besides DispatchSnippet
 trait, Lift loads and invoke Snippets functions using reflection.
 Since discriminating at runtime between a stateless and a stateful
 requires a trait (forget about annotations for now) well that trait is
 StatefulSnippet.


 
  to avoid RequestVar-s but keep state for current rendering pipeline in
 
   the snippet.
   2. You can indicate that you want to reuse the same instance across
   multiple pages using link or redirectTo functions from the
   StatefulSnippet
 
   So depending what you want to doyou can use the statefull or
 stateless
   nature of snippets. For stateless snippets you can just declare the
   class and the method and just use it. Such as:
 
   class Foo {
 
def bar(xml: NodeSeq) :NodeSeq = ...
   }
 
   .. and in your markup
 
   lift:Foo.bar/
 
   you can also say
 
   class Foo  extends DispatchSniuppet {
 
 def dispatch = ...
   }
 
   which is also a stateless snippet.
 
   Br's,
   Marius
 
   On Apr 11, 7:21 am, Oliver Lambert olambo...@gmail.com wrote:
I have a stateful snippet that doesn't always appear to work with
 the
   back
button.
Sometimes, when the back button is used, a new stateful

[Lift] Re: stateful vs stateless snippet

2009-04-11 Thread Oliver Lambert
On Sun, Apr 12, 2009 at 7:14 AM, marius d. marius.dan...@gmail.com wrote:


 The StatefulSnippet is not a snippet instance that is always used in
 the context of your session.


Yikes! in that case, I wrote a whole application based on false assumption.
It says in the lift book
a StatefulSnippet is ideal for small, conversational state, such as a form
that spans multiple pages
If it spans multiple pages, doesn't this kind of imply the same instance in
the session?

Anyway thanks for this info. Any reason why a StatefulSnippet always has a
dispatch function and
a Stateless one, by default, has not?


to avoid RequestVar-s but keep state for current rendering pipeline in
 the snippet.
 2. You can indicate that you want to reuse the same instance across
 multiple pages using link or redirectTo functions from the
 StatefulSnippet

 So depending what you want to doyou can use the statefull or stateless
 nature of snippets. For stateless snippets you can just declare the
 class and the method and just use it. Such as:

 class Foo {

  def bar(xml: NodeSeq) :NodeSeq = ...
 }

 .. and in your markup

 lift:Foo.bar/

 you can also say

 class Foo  extends DispatchSniuppet {

   def dispatch = ...
 }

 which is also a stateless snippet.

 Br's,
 Marius

 On Apr 11, 7:21 am, Oliver Lambert olambo...@gmail.com wrote:
  I have a stateful snippet that doesn't always appear to work with the
 back
  button.
  Sometimes, when the back button is used, a new stateful snippet instance
  appears to be created. Has this happened to anyone else?
 
  Anyway, I've converted what I had to use a SessionVar to store the state.
  Should I replace the stateful snippet with a stateless one - does a
 stateful
  snippet that isn't storing any state have any extra overhead over a
  stateless one?
 
  If I do use a stateless snipet can I still have a dispatch method?
 
  cheers
  Oliver
 


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[Lift] Re: JPA or JDO best for us on Google App Engine?

2009-04-11 Thread Oliver Lambert
On Sun, Apr 12, 2009 at 2:54 PM, David Pollak feeder.of.the.be...@gmail.com
 wrote:



 On Sat, Apr 11, 2009 at 8:36 PM, mal3 malcolm.gor...@gmail.com wrote:


 We are going to use the Google App Engine (GAE) for our app using GWT
 with the new Google GWT Eclipse plugin support.

 Our Scala and Lift skills are not up to the task of doing it in Lift
 right now.
 Once we have Exploring Lift and Beginning Scala books in our hot
 little hands in May, we will begin to port the app over to Lift.

 We need to choose between JPA and JDO. Which is the best choice
 in anticipation of using Lift on GAE in a couple of months time?
  So far as I can see, Lift supports JPA but not JDO.


 Lift supports either.  Lift is persistence agnostic.  Lift has a module,
 mapper, that has JDBC support.  Derek and Co. have built some nice
 JPA archetypes, but you can use JDO to your heart's content with Lift.


But there are no JDO examples while there are JPA and mapper ones.




 Mal.





 --
 Lift, the simply functional web framework http://liftweb.net
 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp


 


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[Lift] stateful vs stateless snippet

2009-04-10 Thread Oliver Lambert
I have a stateful snippet that doesn't always appear to work with the back
button.
Sometimes, when the back button is used, a new stateful snippet instance
appears to be created. Has this happened to anyone else?

Anyway, I've converted what I had to use a SessionVar to store the state.
Should I replace the stateful snippet with a stateless one - does a stateful
snippet that isn't storing any state have any extra overhead over a
stateless one?

If I do use a stateless snipet can I still have a dispatch method?

cheers
Oliver

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[Lift] Re: Lift AJAX and IE6

2009-04-09 Thread Oliver Lambert
On Thu, Apr 9, 2009 at 11:03 PM, David Pollak feeder.of.the.be...@gmail.com
 wrote:



 On Thu, Apr 9, 2009 at 4:35 AM, olambo olambo...@gmail.com wrote:



 
   Also, is the Lift AJAX script necessary for anything other than Comet?
   If I have a site that's using no AJAX or Comet, can I just turn this
   off? If so, how?
 
  No... it's also used for Garbage Collection. :-(

 I've also noticed this running. Is this Garbage Collection of
 javascript or a call to the JVM?


 Lift stores a mapping between GUIDs it assigns to HTML elements on the
 client to functions to execute when those elements are processed by the
 server.  For example:

 SHtml.text(, s = println(The text box was +s))

 The function (s = println(The text box was +s)) is stored on the server.
  The input type=text .../ tag has a GUID that binds the HTML element to
 the function.  If the HTML element is not on the client any more, the
 reference to the function should be dropped so it's not using resources.
  This is garbage collection.  It is not JVM garbage collection, but it is
 removal of unused references.


I can see that it needs to remove unused references, but why in an ajax
call, why not as part of the lift request lifecycle? If the client has
closed the browser the ajax call isn't going to be called anyway. Why would
a single HTML element in a single client response have disappeared (heavy
use of ajax and javascript?).

Now why is lift saving references - obviously to support the next request
from the current page, which might involve the back button (and
subsequently, the forward button). So in my mind, I should be able to
specify I want the last N back button calls supported and any functions
older than that get dropped from the reference map. But obviously this isn't
whats happening, because an ajax call to do it, makes no sense (assuming I
have no javascript and no ajax calls).

So what references are being removed and why ajax to remove them?










 --
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 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp


 


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[Lift] maven scala plugin

2009-02-18 Thread Oliver

Hi,
I know its not exactly a lift specific problem, but

I create a lift project using
mvn archetype:generate -U -DarchetypeGroupId=net.liftweb
-DarchetypeArtifactId=lift-archetype-blank -DarchetypeVersion=0.10
-DremoteRepositories=http://scala-tools.org/repo-releases
-DgroupId=demo.helloworld -DartifactId=helloworld
-Dversion=1.0-SNAPSHOT

This creates a pom.xml with 2.7.3 as the version of Scala - Everything
appears fine.
I add a variable that uses an Enumeration and use the new valueOf method.

When I open the project in netbeans, it says the valueOf method doesnt
exist, but when I do a mvn clean build, everything is happy
When I extend an Enumeration and define a valueOf method (without
overriding it) maven fails at the test stage, saying I need to
override
When I override the valueOf method, maven fails at the compilation
stage, saying valueOf is not defined in the parent

Any ideas what the maven scala plugin is doing?

cheers
Oliver

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[Lift] thanks

2009-02-12 Thread Oliver

Thanks for all the help and support over the last few months. During
that time, I've developed several
Lift applications that are now successfully running in production at
the company I work for.

One of the things that has impressed me is the community spirit of the
group.  I've had pretty much
all my questions answered and problems fixed very quickly. This gave
me confidence to push the
adoption of the framework.

I haven't always agreed with some of the design decisions in Lift, but
that's true of any framework. I bet
even a framework founder doesn't like everything about it.  Anyway
sometimes programmers have to agree
to disagree.

I now find myself in the position of having to consider Slinky as an
alternative to Lift. This brings up
questions in my mind about community, support and maturity.  I'm not
willing to let go of Lift's
xhtml templating paradigm, so I can see some interesting discussions ahead.

cheers
Oliver

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[Lift] Re: thanks

2009-02-12 Thread Oliver

If you could that would be great!

On Fri, Feb 13, 2009 at 10:55 AM, Jorge Ortiz jorge.or...@gmail.com wrote:

 One of the projects I keep putting off is to extract Lift's templating
 system into a component that could be used as a stand-alone library. If this
 is something you'd be interested in, let me know and I'll try to prioritize
 it.

 cheers
 Oliver




 


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[Lift] Re: *** BREAKING CHANGES ***

2009-02-10 Thread Oliver

Doesn't look right and If I do this I get the following error -
constructor cannot be instantiated to the expected type

On Tue, Feb 10, 2009 at 8:57 PM, Jorge Ortiz jorge.or...@gmail.com wrote:
 Try (without the = sign):

 LiftRules.exceptionHandler.prepend {
case (mode, state, ex) = RedirectResponse(/error)
 }
 --j

 On Mon, Feb 9, 2009 at 10:47 PM, Oliver ola...@gmail.com wrote:

 If I try to use the following, I get a reassignment to Val error - any
 ideas?

 LiftRules.exceptionHandler.prepend = {
case (mode, state, ex) = RedirectResponse(/error)
 }

 On Wed, Dec 24, 2008 at 5:41 AM, Marius marius.dan...@gmail.com wrote:
 
  Folks,
 
  I just committed a couple of changes that may impact your application.
 
  1. LiftRules.logAndReturnExceptionToBrowser and
  LiftRules.browserResponseToException have been removed. These were two
  different variables that did pretty much the same thing in fact the
  first ultimately called the former. These have been replaced with:
 
 
  var exceptionHandler = RulesSeq[ExceptionHandlerPF]
 
  having
 
  type ExceptionHandlerPF = PartialFunction[(Props.RunModes.Value, Req,
  Throwable), LiftResponse]
 
  By default a partial function is appended and it is the same code that
  used to be for LiftRules.browserResponseToException.
 
  So up until now probably your application was using something like:
 
  LiftRules.logAndReturnExceptionToBrowser = {
 case (state, ex) = RedirectResponse(/error)
  }
 
  now this turns into:
 
  LiftRules.exceptionHandler.prepend = {
 case (mode, state, ex) = RedirectResponse(/error)
  }
 
 
  2. More unification of Ajax notices with static notices. So far to
  apply styling information (css classes etc) to Ajax notices we used
  three LiftRules variables:
 
   var ajaxNoticeMeta: Can[AjaxMessageMeta]
   var ajaxWarningMeta: Can[AjaxMessageMeta]
   var ajaxErrorMeta: Can[AjaxMessageMeta]
 
  the motivation was that in order for Lift to send down the correct
  style information for Ajax/Comet notices it needed to maintain this
  information. Now I finally found time to do it. The above variables
  are gone. Instead the same styling information that you use for
  lift:msgs and lift:msg snippets will be applied for AJax and Comet
  notices. The styling information is captured when these snippets are
  executed and used whenever you're using notices for AJax response or
  from a Comet actor.
 
 
  Br's,
  Marius
  
 




 


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[Lift] Re: *** BREAKING CHANGES ***

2009-02-10 Thread Oliver

I've just updated my code to rely on the stable version of lift 0.10
rather than an earlier snapshot.
Unfortunately the removal of LiftRules.logAndReturnExceptionToBrowser
and non working status of
LiftRules.exceptionHandler.prepend means my choices now are

1) To back out my reliance on the stable version of lift 0.10
2) To look at the source code for lift and try to figure out the problem
3) To remove my applications reliance on this code

I am going to be glad when Lift gets to version 1.0, because
presumably there will be less breaking changes (I hope)

On Wed, Feb 11, 2009 at 9:58 AM, Oliver ola...@gmail.com wrote:
 Doesn't look right and If I do this I get the following error -
 constructor cannot be instantiated to the expected type

 On Tue, Feb 10, 2009 at 8:57 PM, Jorge Ortiz jorge.or...@gmail.com wrote:
 Try (without the = sign):

 LiftRules.exceptionHandler.prepend {
case (mode, state, ex) = RedirectResponse(/error)
 }
 --j

 On Mon, Feb 9, 2009 at 10:47 PM, Oliver ola...@gmail.com wrote:

 If I try to use the following, I get a reassignment to Val error - any
 ideas?

 LiftRules.exceptionHandler.prepend = {
case (mode, state, ex) = RedirectResponse(/error)
 }

 On Wed, Dec 24, 2008 at 5:41 AM, Marius marius.dan...@gmail.com wrote:
 
  Folks,
 
  I just committed a couple of changes that may impact your application.
 
  1. LiftRules.logAndReturnExceptionToBrowser and
  LiftRules.browserResponseToException have been removed. These were two
  different variables that did pretty much the same thing in fact the
  first ultimately called the former. These have been replaced with:
 
 
  var exceptionHandler = RulesSeq[ExceptionHandlerPF]
 
  having
 
  type ExceptionHandlerPF = PartialFunction[(Props.RunModes.Value, Req,
  Throwable), LiftResponse]
 
  By default a partial function is appended and it is the same code that
  used to be for LiftRules.browserResponseToException.
 
  So up until now probably your application was using something like:
 
  LiftRules.logAndReturnExceptionToBrowser = {
 case (state, ex) = RedirectResponse(/error)
  }
 
  now this turns into:
 
  LiftRules.exceptionHandler.prepend = {
 case (mode, state, ex) = RedirectResponse(/error)
  }
 
 
  2. More unification of Ajax notices with static notices. So far to
  apply styling information (css classes etc) to Ajax notices we used
  three LiftRules variables:
 
   var ajaxNoticeMeta: Can[AjaxMessageMeta]
   var ajaxWarningMeta: Can[AjaxMessageMeta]
   var ajaxErrorMeta: Can[AjaxMessageMeta]
 
  the motivation was that in order for Lift to send down the correct
  style information for Ajax/Comet notices it needed to maintain this
  information. Now I finally found time to do it. The above variables
  are gone. Instead the same styling information that you use for
  lift:msgs and lift:msg snippets will be applied for AJax and Comet
  notices. The styling information is captured when these snippets are
  executed and used whenever you're using notices for AJax response or
  from a Comet actor.
 
 
  Br's,
  Marius
  
 




 



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[Lift] Re: *** BREAKING CHANGES ***

2009-02-10 Thread Oliver

My apologies, it works as shown by your code and in the way Jorge
described. I had changed simply cut and pasted Marius's example
and deleted it when it didn't work. Then I changed my own code without
modifying the case statement correctly. Sometimes I can't
add 1 + 1

On Wed, Feb 11, 2009 at 10:26 AM, David Pollak
feeder.of.the.be...@gmail.com wrote:


 On Tue, Feb 10, 2009 at 3:13 PM, Oliver ola...@gmail.com wrote:

 I've just updated my code to rely on the stable version of lift 0.10
 rather than an earlier snapshot.
 Unfortunately the removal of LiftRules.logAndReturnExceptionToBrowser
 and non working status of
 LiftRules.exceptionHandler.prepend means my choices now are

 1) To back out my reliance on the stable version of lift 0.10
 2) To look at the source code for lift and try to figure out the problem
 3) To remove my applications reliance on this code

 I just inserted:

 LiftRules.exceptionHandler.prepend {
   case (mode, state, ex) = RedirectResponse(/error)
 }

 Into Boot.scala in a newly created Lift 0.10 app.  It worked without
 complaint.

 Please try doing an mvn -U clean install and see if that works.  I'm also
 happy to look at your source off-list to see if I can puzzle through the
 problem.

 And, yes the API changes are going to be minimal from here on out.


 I am going to be glad when Lift gets to version 1.0, because
 presumably there will be less breaking changes (I hope)

 On Wed, Feb 11, 2009 at 9:58 AM, Oliver ola...@gmail.com wrote:
  Doesn't look right and If I do this I get the following error -
  constructor cannot be instantiated to the expected type
 
  On Tue, Feb 10, 2009 at 8:57 PM, Jorge Ortiz jorge.or...@gmail.com
  wrote:
  Try (without the = sign):
 
  LiftRules.exceptionHandler.prepend {
 case (mode, state, ex) = RedirectResponse(/error)
  }
  --j
 
  On Mon, Feb 9, 2009 at 10:47 PM, Oliver ola...@gmail.com wrote:
 
  If I try to use the following, I get a reassignment to Val error - any
  ideas?
 
  LiftRules.exceptionHandler.prepend = {
 case (mode, state, ex) = RedirectResponse(/error)
  }
 
  On Wed, Dec 24, 2008 at 5:41 AM, Marius marius.dan...@gmail.com
  wrote:
  
   Folks,
  
   I just committed a couple of changes that may impact your
   application.
  
   1. LiftRules.logAndReturnExceptionToBrowser and
   LiftRules.browserResponseToException have been removed. These were
   two
   different variables that did pretty much the same thing in fact the
   first ultimately called the former. These have been replaced with:
  
  
   var exceptionHandler = RulesSeq[ExceptionHandlerPF]
  
   having
  
   type ExceptionHandlerPF = PartialFunction[(Props.RunModes.Value,
   Req,
   Throwable), LiftResponse]
  
   By default a partial function is appended and it is the same code
   that
   used to be for LiftRules.browserResponseToException.
  
   So up until now probably your application was using something like:
  
   LiftRules.logAndReturnExceptionToBrowser = {
  case (state, ex) = RedirectResponse(/error)
   }
  
   now this turns into:
  
   LiftRules.exceptionHandler.prepend = {
  case (mode, state, ex) = RedirectResponse(/error)
   }
  
  
   2. More unification of Ajax notices with static notices. So far to
   apply styling information (css classes etc) to Ajax notices we used
   three LiftRules variables:
  
var ajaxNoticeMeta: Can[AjaxMessageMeta]
var ajaxWarningMeta: Can[AjaxMessageMeta]
var ajaxErrorMeta: Can[AjaxMessageMeta]
  
   the motivation was that in order for Lift to send down the correct
   style information for Ajax/Comet notices it needed to maintain this
   information. Now I finally found time to do it. The above variables
   are gone. Instead the same styling information that you use for
   lift:msgs and lift:msg snippets will be applied for AJax and Comet
   notices. The styling information is captured when these snippets are
   executed and used whenever you're using notices for AJax response or
   from a Comet actor.
  
  
   Br's,
   Marius
   
  
 
 
 
 
  
 
 





 --
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 Beginning Scala http://www.apress.com/book/view/1430219890
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] JTA showSQL

2009-02-09 Thread Oliver

Hi Derek and interested parties

I know there is a showSQL option that can be enabled with
JTA/Hibernate but I find the output verbose and uninformative about
parameter replacement.

So, I have my own ScalaQuery that allows simple debugging - the main
differences are -

var queryParams: List[Pair[String,Any]] = Nil
   /*  the following method needs to be called by the various
SetParameter methods */
def addParam(one: String,two: Any) = {
query.setParameter(one, two)
queryParams = (one, two) :: queryParams
}
/*
 output the query with parameters substitued, for debugging ...
 */
def getQueryWithParams() = {
var q = queryStr
try {
queryParams.foreach{v =
var rep = v._2 match {
case d: Date = '+SUtil.formatDate(d, dd/MM/)+'
case s: String = '+s+'
case x = if (x==null)  else x.toString
}
rep = rep.replaceAll(\\$, ddDollardd) // stupid bug
q = q.replaceAll(:+v._1, rep)
}
q.replaceAll(ddDollardd, \\$)
} catch {
case e: Exception = q+ PARAMS +queryParams+  EXCEPTION +e
}
}

With this I can log the query via
 Log.info(emailQuery.getQueryWithParams())

Better still, (assuming execOnce exists in a utility object) when I
only need to see the query once in the log
/*
 execulte execFn, just once for the jvm.
 */
val execOnceSet = scala.collection.mutable.Set()
def execOnce(key: String, execFn: = Unit) = {
if (!execOnceSet.contains(key)) {
execOnceSet += key
execFn
}
}

  execOnce(findByEmail,  Log.info(emailQuery.getQueryWithParams()) )


You can add the functionality if you find it useful

cheers
Oliver

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[Lift] Re: *** BREAKING CHANGES ***

2009-02-09 Thread Oliver

If I try to use the following, I get a reassignment to Val error - any ideas?

LiftRules.exceptionHandler.prepend = {
case (mode, state, ex) = RedirectResponse(/error)
}

On Wed, Dec 24, 2008 at 5:41 AM, Marius marius.dan...@gmail.com wrote:

 Folks,

 I just committed a couple of changes that may impact your application.

 1. LiftRules.logAndReturnExceptionToBrowser and
 LiftRules.browserResponseToException have been removed. These were two
 different variables that did pretty much the same thing in fact the
 first ultimately called the former. These have been replaced with:


 var exceptionHandler = RulesSeq[ExceptionHandlerPF]

 having

 type ExceptionHandlerPF = PartialFunction[(Props.RunModes.Value, Req,
 Throwable), LiftResponse]

 By default a partial function is appended and it is the same code that
 used to be for LiftRules.browserResponseToException.

 So up until now probably your application was using something like:

 LiftRules.logAndReturnExceptionToBrowser = {
case (state, ex) = RedirectResponse(/error)
 }

 now this turns into:

 LiftRules.exceptionHandler.prepend = {
case (mode, state, ex) = RedirectResponse(/error)
 }


 2. More unification of Ajax notices with static notices. So far to
 apply styling information (css classes etc) to Ajax notices we used
 three LiftRules variables:

  var ajaxNoticeMeta: Can[AjaxMessageMeta]
  var ajaxWarningMeta: Can[AjaxMessageMeta]
  var ajaxErrorMeta: Can[AjaxMessageMeta]

 the motivation was that in order for Lift to send down the correct
 style information for Ajax/Comet notices it needed to maintain this
 information. Now I finally found time to do it. The above variables
 are gone. Instead the same styling information that you use for
 lift:msgs and lift:msg snippets will be applied for AJax and Comet
 notices. The styling information is captured when these snippets are
 executed and used whenever you're using notices for AJax response or
 from a Comet actor.


 Br's,
 Marius
 


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[Lift] Re: Can or Box or something else

2008-12-27 Thread Oliver Lambert
Ha :), I really think you've let the Can out of the Box by raising  
this thread. Don't we all get a vote?
After reading all the threads -
+1 Box

On 27/12/2008, at 10:06 AM, David Pollak wrote:



 2008/12/26 Alex Boisvert boisv...@intalio.com
 Just brainstorming here...  not sure if we're beating a dead  
 horse... but about Option3 to signify it has 3 states?  (i.e. Some3,  
 None3, Error3)

 It's uglier but could be easier to explain and understand.

 Personally, it took me a lot to get the concept of Option... mainly  
 because to me, an Option is this or that, not some or none.   
 Optional would have been a better choice as is Maybe.  In fact, it  
 wasn't until I was playing around with Haskell and the Maybe monad,  
 that I finally got Options.  I would despise the idea of  
 perpetuating what I consider to be one of Scala's weakest naming  
 schemes.

 It's going to stay Can, but if I had it to do all over, I'd call  
 it Box.

 Thanks for all your respective thoughts on the subject.

 David

 PS -- The code is pretty much frozen for Lift.  There'll be a few  
 last minute minor changes between now and Jan 2 (or whenever 2.7.3  
 goes final) at which time we'll release Lift 0.10 and start on the  
 Lift 1.0-SNAPSHOT version.  We're expecting to ship Lift 1.0 on the  
 2 year anniversary of the project.



 alex


 On Fri, Dec 26, 2008 at 3:29 AM, Mateusz Fiołka mateusz.fio...@gmail.co 
 m wrote:
 If Maybe should be not used because of possible name clash in Scala  
 library then how about considering synonyms: Possible and Perhaps?


 On Fri, Dec 26, 2008 at 10:31 AM, Caoyuan dcaoy...@gmail.com wrote:

 and Pack ?

 On Fri, Dec 26, 2008 at 8:35 AM, Marc Boschma marc 
 +lift...@boschma.cx wrote:
 
  I know David has resigned to keeping 'Can', but wouldn't 'Jar' be an
  alternative? That way Empty and Full still make sense...
 
  Initially I thought 'Tin' sounded better but I recognise that term
  wouldn't be as universal.
 
  Marc
 
  On 26/12/2008, at 4:14 AM, Michael Campbell wrote:
 
 
  David Pollak wrote:
  Folks,
 
  Over the year that Lift has had Can[T] as a replacement for  
 Scala's
  Option[T], the name Can has required a lot of explaining.
 
 
  I've never liked Can as a name; always thinking that the opposite
  of one
  should be a Can't.   I'm sure it's my own issue to solve, but  
 it's
  cognitively dissonant to me.
 
  Any other container name works better for me, although of the ones
  you listed,
  I like Box.
 
 
  --
  Twitter:  http://twitter.com/campbellmichael
 
  
 
 
  
 











 -- 
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 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: error message tag

2008-12-23 Thread Oliver Lambert
I have a html/css developer who is claiming that span id=errMsg/  
is causing IE to go into quirks mode.
He suggests span id=errMsg/span would be OK

On 23/12/2008, at 11:16 AM, David Pollak wrote:



 On Mon, Dec 15, 2008 at 3:29 PM, Oliver ola...@gmail.com wrote:

 I have the following to output an error message against
 lift:msg id=errMsg type=msgs/

 When I have an error its all fine, but when I don't have an error I
 get the following html
 span id=errMsg/

 Is there any way of getting rid of the empty span?

 I think you want to keep the empty span.  If you've got Comet and/or  
 Ajax code updating the messages, then need a place to go and  
 that place would be this empty span.



 cheers
 Oliver





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 Collaborative Task Management http://much4.us
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[Lift] Re: error message tag

2008-12-23 Thread Oliver Lambert
I think quirks keeps some people in jobs.

Cheers in advance for the update.

On 23/12/2008, at 8:49 PM, David Pollak wrote:

 Does ie have anything other than quirks mode?

 I'll update the rendering methods to make sure span goes out as  
 begin/end tags


 On Dec 23, 2008 12:55 AM, Oliver Lambert ola...@gmail.com wrote:

 I have a html/css developer who is claiming that span id=errMsg/  
 is causing IE to go into quirks mode.
 He suggests span id=errMsg/span would be OK

 On 23/12/2008, at 11:16 AM, David Pollak wrote:

On Mon, Dec 15, 2008 at 3:29 PM, Oliver ola...@gmail.com  
 wrote:I have the followin...

  Lift, the simply functional web framework http://liftweb.net   
 Collaborative Task Management http:...


 


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[Lift] Re: error message tag

2008-12-23 Thread Oliver Lambert

He came up with no other cases.

On 23/12/2008, at 9:05 PM, Marius wrote:


 LIft code actually does this for empty node that are not div, script
 or textarea. I could quick fix it for span as well but can you verify
 if there are are cases except span where IE is messing around with us?

 On Dec 23, 10:55 am, Oliver Lambert ola...@gmail.com wrote:
 I have a html/css developer who is claiming that span id=errMsg/
 is causing IE to go into quirks mode.
 He suggests span id=errMsg/span would be OK

 On 23/12/2008, at 11:16 AM, David Pollak wrote:



 On Mon, Dec 15, 2008 at 3:29 PM, Oliver ola...@gmail.com wrote:

 I have the following to output an error message against
 lift:msg id=errMsg type=msgs/

 When I have an error its all fine, but when I don't have an error I
 get the following html
 span id=errMsg/

 Is there any way of getting rid of the empty span?

 I think you want to keep the empty span.  If you've got Comet and/or
 Ajax code updating the messages, then need a place to go and
 that place would be this empty span.

 cheers
 Oliver

 --
 Lift, the simply functional web frameworkhttp://liftweb.net
 Collaborative Task Managementhttp://much4.us
 Follow me:http://twitter.com/dpp
 Git some:http://github.com/dpp
 


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[Lift] Re: LiftRules.logAndReturnExceptionToBrowser doesnt alway work

2008-12-21 Thread Oliver Lambert

Cool, Thanks

On 21/12/2008, at 6:20 PM, Marius wrote:


 You already got good advices to your particular problem still an
 exception thrown from LoanWrapper-s should be caught by and your
 function called. I'll look into it tomorrow.


 Br's,
 Marius

 On 18 Dec, 23:58, Oliver ola...@gmail.com wrote:
 I was redirecting to an error page using
 LiftRules.logAndReturnExceptionToBrowser, but when I use a  
 LoanWrapper
 to close a EntityManager and an error occurs when closing the entity
 manager, LiftRules.logAndReturnExceptionToBrowser doesn't appear to
 redirect to my error page. Can anyone think of a work around?

 // Output a simple error to the user. Link the error message
 to the screen via the current datetime
 LiftRules.logAndReturnExceptionToBrowser = {
 RedirectResponse(/error);
 }

 // Set up a LoanWrapper to automatically close a  
 EntityManager
 if its open
 S.addAround(List(
 new LoanWrapper {
 def apply[T] (f : = T): T = {
 try {
 f
 } finally {
 EM.closeEM // close if open
 }
 }
 }))

 }
 


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[Lift] Re: url handling

2008-12-20 Thread Oliver Lambert

Im using a net.liftweb.http.S.redirectTo within a stateful snippet.

On 20/12/2008, at 9:40 PM, Marius wrote:


 Looks like a function will be executed when this request is submitted.

 In what conditions are you seeing this? Are you calling S.redirectTo
 and pass a function? ... or use RedirectWithState?

 Br's,
 Marius

 On 20 Dec, 05:26, Oliver Lambert ola...@gmail.com wrote:
 Hi

 I notice lift sometimes lift rewrites the url a little
 e.g. -  
 http://localhost:9090/enterbecomeshttp://localhost:9090/enter?fnVT32KHAJRTHI5RNQ2XBY=_

 What are the rules for when this happens?
 Is there anyway to write a lift application where it doesn't happen?

 cheers
 Oliver
 


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[Lift] Can or Box or something else

2008-12-20 Thread Oliver Lambert
Is Can a little less like Option and more like scala.Either, where the  
left side is used to indicate failure?

On 21/12/2008, at 1:43 AM, David Pollak wrote:

 Folks,

 Over the year that Lift has had Can[T] as a replacement for Scala's  
 Option[T], the name Can has required a lot of explaining.

 As we make the final push into freezing Lift's APIs, do we want to  
 change the name of Can to something else or should we leave it as  
 Can.  Alternatives are:
 Cup
 Box
 Both of which can be Full/Empty.

 Thanks,

 David

 PS -- The Scala collections classes are getting a redo for 2.8.   
 I've been gently pestering Martin to expand Option to have a Failure  
 case.  If this happens (it's not really likely for a couple of  
 reasons), Can will be orphaned.

 -- 
 Lift, the simply functional web framework http://liftweb.net
 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: url handling

2008-12-20 Thread Oliver Lambert
It sounds like the this version is firing. What should I be using?

On 21/12/2008, at 2:36 AM, Derek Chen-Becker wrote:

 Are you sure you're using S.redirectTo? For one, that's not what you  
 want if you want to keep using the same stateful snippet instance.  
 Second, if you're not calling it explicitly (i.e. using just  
 redirectTo), the this version of redirectTo on StatefulSnippet  
 may be firing.

 Derek

 On Sat, Dec 20, 2008 at 5:36 AM, Oliver Lambert ola...@gmail.com  
 wrote:

 Simple, I would like my url to be called without ?... tacked onto the
 end.

 On 20/12/2008, at 10:40 PM, Tim Perrett wrote:

 
  Oliver,
 
  Lift will only create these types of URL when you pass params when
  creating a link.
 
  There is a very sophisticated rewriting engine in lift, so a better
  question would be what do you want your URL to look like?
 
  Thanks, Tim
 
  Sent from my iPhone
 
  On 20 Dec 2008, at 03:26, Oliver Lambert ola...@gmail.com wrote:
 
 
  Hi
 
  I notice lift sometimes lift rewrites the url a little
e.g. -  http://localhost:9090/enter becomes 
  http://localhost:9090/enter?fnVT32KHAJRTHI5RNQ2XBY=_
 
  What are the rules for when this happens?
  Is there anyway to write a lift application where it doesn't  
 happen?
 
  cheers
  Oliver
 
 
 
 
  





 


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[Lift] Re: Can or Box or something else

2008-12-20 Thread Oliver Lambert
Yup, when you chose the original name, you did a good job - why second  
guess yourself now. Can we just leave it the way it is.

On 21/12/2008, at 6:25 AM, David Pollak wrote:

 Because Can is three letters and OptionPlus is 11 and a frequently  
 used construct should be easy on the fingers.


 On Dec 20, 2008 11:15 AM, Oliver Lambert ola...@gmail.com wrote:

 Ok so Can is not either an Either or an Option, its a Can. I kind of  
 wondered when I first used Can, and it was described as an enhanced  
 Option,  why it wasn't called something like Option+ with None, Some  
 and Failure.
 On 21/12/2008, at 5:47 AM, David Pollak wrote:  Can has map,  
 flatMap, filter etc. So it can be u...

 You received this message because you are subscribed to the Google  
 Groups Lift group. To post to ...




 


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[Lift] Re: Can or Box or something else

2008-12-20 Thread Oliver Lambert

Perhaps we should rename Can to Option and get the Scala guys to  
rename theirs, OptionWithoutFailure :)

On 21/12/2008, at 6:50 AM, Charles F. Munat wrote:

 OptionWithFailure


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[Lift] Re: LiftRules.logAndReturnExceptionToBrowser doesnt alway work

2008-12-19 Thread Oliver Lambert
Ha, very observant - I am relying on it to commit or rollback or do  
nothing.

  I note your recommendation, but I'd rather not have transaction  
support code littered around.
For my application, I want a transaction lazily created  and closed  
after each request, if it was created.
If what I am doing is bad design or coding, Im willing to change it.

Oliver

On 20/12/2008, at 1:12 AM, Derek Chen-Becker wrote:

 What kind of error are you getting when the EM closes? As long as  
 you're not relying on the EM.close to commit your transaction  
 (something I'd recommend against anyway) then there really shouldn't  
 be any errors at this point.

 Derek

 On Thu, Dec 18, 2008 at 10:00 PM, Oliver ola...@gmail.com wrote:

 I started on that path, and thought I could redirect with something  
 like
   Full(span some html that redirects to the error page...
 /span).asInstanceOf[T]
 It feels like a big hack, even if I could get it working and I was a
 little worried about creating
 a redirection loop.
 I've created a static html error page and call it from web.xml for now
 - it'll have to do for now.

 On Fri, Dec 19, 2008 at 11:09 AM, David Pollak
 feeder.of.the.be...@gmail.com wrote:
  I'd put a try/finally around the EM.closeEM call so that it does  
 not impact
  the stuff that's being rendered to the browser.  Don't let the  
 exception in
  the finally block propogate.
 
  On Thu, Dec 18, 2008 at 1:58 PM, Oliver ola...@gmail.com wrote:
 
  I was redirecting to an error page using
  LiftRules.logAndReturnExceptionToBrowser, but when I use a  
 LoanWrapper
  to close a EntityManager and an error occurs when closing the  
 entity
  manager, LiftRules.logAndReturnExceptionToBrowser doesn't appear to
  redirect to my error page. Can anyone think of a work around?
 
 
 // Output a simple error to the user. Link the error message
  to the screen via the current datetime
 LiftRules.logAndReturnExceptionToBrowser = {
 RedirectResponse(/error);
 }
 
 // Set up a LoanWrapper to automatically close a  
 EntityManager
  if its open
 S.addAround(List(
 new LoanWrapper {
 def apply[T] (f : = T): T = {
 try {
 f
 } finally {
 EM.closeEM // close if open
 }
 }
 }))
 
 }
 
 
 
 
 
  --
  Lift, the simply functional web framework http://liftweb.net
  Collaborative Task Management http://much4.us
  Follow me: http://twitter.com/dpp
  Git some: http://github.com/dpp
 
  
 




 


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[Lift] url handling

2008-12-19 Thread Oliver Lambert

Hi

I notice lift sometimes lift rewrites the url a little
e.g. -  http://localhost:9090/enter becomes 
http://localhost:9090/enter?fnVT32KHAJRTHI5RNQ2XBY=_

What are the rules for when this happens?
Is there anyway to write a lift application where it doesn't happen?

cheers
Oliver

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[Lift] LiftRules.logAndReturnExceptionToBrowser doesnt alway work

2008-12-18 Thread Oliver

I was redirecting to an error page using
LiftRules.logAndReturnExceptionToBrowser, but when I use a LoanWrapper
to close a EntityManager and an error occurs when closing the entity
manager, LiftRules.logAndReturnExceptionToBrowser doesn't appear to
redirect to my error page. Can anyone think of a work around?


// Output a simple error to the user. Link the error message
to the screen via the current datetime
LiftRules.logAndReturnExceptionToBrowser = {
RedirectResponse(/error);
}

// Set up a LoanWrapper to automatically close a EntityManager
if its open
S.addAround(List(
new LoanWrapper {
def apply[T] (f : = T): T = {
try {
f
} finally {
EM.closeEM // close if open
}
}
}))

}

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[Lift] Re: LiftRules.logAndReturnExceptionToBrowser doesnt alway work

2008-12-18 Thread Oliver

I started on that path, and thought I could redirect with something like
   Full(span some html that redirects to the error page...
/span).asInstanceOf[T]
It feels like a big hack, even if I could get it working and I was a
little worried about creating
a redirection loop.
I've created a static html error page and call it from web.xml for now
- it'll have to do for now.

On Fri, Dec 19, 2008 at 11:09 AM, David Pollak
feeder.of.the.be...@gmail.com wrote:
 I'd put a try/finally around the EM.closeEM call so that it does not impact
 the stuff that's being rendered to the browser.  Don't let the exception in
 the finally block propogate.

 On Thu, Dec 18, 2008 at 1:58 PM, Oliver ola...@gmail.com wrote:

 I was redirecting to an error page using
 LiftRules.logAndReturnExceptionToBrowser, but when I use a LoanWrapper
 to close a EntityManager and an error occurs when closing the entity
 manager, LiftRules.logAndReturnExceptionToBrowser doesn't appear to
 redirect to my error page. Can anyone think of a work around?


// Output a simple error to the user. Link the error message
 to the screen via the current datetime
LiftRules.logAndReturnExceptionToBrowser = {
RedirectResponse(/error);
}

// Set up a LoanWrapper to automatically close a EntityManager
 if its open
S.addAround(List(
new LoanWrapper {
def apply[T] (f : = T): T = {
try {
f
} finally {
EM.closeEM // close if open
}
}
}))

}





 --
 Lift, the simply functional web framework http://liftweb.net
 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: liftweb xml schema location

2008-12-17 Thread Oliver Lambert
Don't I need the xsd or dtd specification?

On 17/12/2008, at 7:50 PM, Viktor Klang wrote:

 Why not just add a hosts entry and redirect that host to an internal  
 machine?

 On Wed, Dec 17, 2008 at 7:26 AM, Oliver ola...@gmail.com wrote:

 I have a client doesn't want an external link like
 xmlns:lift=http://liftweb.net/;
 Can I store the schema locally? How do I get it?

 cheers
 Oliver





 -- 
 Viktor Klang
 Senior Systems Analyst

 


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[Lift] Re: liftweb xml schema location

2008-12-17 Thread Oliver

Thanks

This is the information I need

On Wed, Dec 17, 2008 at 11:29 PM, David Bernard
david.bernard...@gmail.com wrote:

 It's not an external link nor a link to a schema but the definition of
 a namespace : lift

 On Wed, Dec 17, 2008 at 10:07, Oliver Lambert ola...@gmail.com wrote:
 Don't I need the xsd or dtd specification?
 On 17/12/2008, at 7:50 PM, Viktor Klang wrote:

 Why not just add a hosts entry and redirect that host to an internal
 machine?

 On Wed, Dec 17, 2008 at 7:26 AM, Oliver ola...@gmail.com wrote:

 I have a client doesn't want an external link like
 xmlns:lift=http://liftweb.net/;
 Can I store the schema locally? How do I get it?

 cheers
 Oliver





 --
 Viktor Klang
 Senior Systems Analyst





 


 


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[Lift] Re: error message tag

2008-12-16 Thread Oliver Lambert


On 16/12/2008, at 3:30 PM, Charles F. Munat wrote:


 I copied and pasted the error message code into my own error message
 utility and then changed the blank output to Text(). I also wanted  
 to
 rewrite other parts of it.

Im trying to get a html programmer to come up with a css fix before I  
put
in my own fix, but its certainly a option to use, if necessary.

 It seems there is always a trade-off between convenience and
 configuration. My coding style is very different from David's (at  
 least
 where HTML is concerned), so I find myself rewriting (modifying,  
 really)
 lots of stuff to make it work the way I need it to. But it sure saves
 time to have a base of code to modify, rather than having to write it
 all from scratch.

I've been guilty of modifying a few things myself, so I certainly  
understand
where you are coming from here. It makes me wonder how many lifters  
are
working with an unadulterated version of the code-base.

My own code style is also probably different from others and is likely
going to diverge as I have a mentor pushing me to adopt a much
more functional/immutable style of programming.



 Chas.

 Oliver wrote:
 I have the following to output an error message against
 lift:msg id=errMsg type=msgs/

 When I have an error its all fine, but when I don't have an error I
 get the following html
 span id=errMsg/

 Is there any way of getting rid of the empty span?

 cheers
 Oliver



 


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[Lift] liftweb xml schema location

2008-12-16 Thread Oliver

I have a client doesn't want an external link like
xmlns:lift=http://liftweb.net/;
Can I store the schema locally? How do I get it?

cheers
Oliver

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[Lift] error message tag

2008-12-15 Thread Oliver

I have the following to output an error message against
lift:msg id=errMsg type=msgs/

When I have an error its all fine, but when I don't have an error I
get the following html
span id=errMsg/

Is there any way of getting rid of the empty span?

cheers
Oliver

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[Lift] context path

2008-12-15 Thread Oliver

I have a few links within my pages where I don't want lift to prepend
the context path to the url. Is there any way to do this?

cheers
Oliver

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[Lift] Re: Binding Problem - Help

2008-12-14 Thread Oliver

David

Thanks for the prompt reply.

I'll upgrade to the latest version of lift so I can use the fix when
it comes in. Is everything relatively stable at the current snapshot?

cheers
Oliver

On Mon, Dec 15, 2008 at 11:47 AM, David Pollak
feeder.of.the.be...@gmail.com wrote:
 Okay,
 The problem is that your computer is too fast. :-)
 Lift assigns function names based on the nano time.  It turns out that the
 methods are getting called so fast, there's no nano tick and the order of
 the function creation is not reflected in the function name.
 I've got a fix.  I'll roll it into Lift tonight or tomorrow.
 Thanks,
 David

 On Sun, Dec 14, 2008 at 3:44 PM, Oliver ola...@gmail.com wrote:

 Hi,

 Its Ubuntu Gutsy running a virtual vsx.
 The processor is a dual cpu 2.8
 Theres 2GB of memory, but Apache tomcat has 500MB.

 I'm running on a snapshot of lift webkit frozen at
 0.10-20080930.234135-129

 I'll send the html in a moment.
 Cheers
 Oliver

 On Mon, Dec 15, 2008 at 10:28 AM, David Pollak
 feeder.of.the.be...@gmail.com wrote:
 
 
  On Sun, Dec 14, 2008 at 3:17 PM, Oliver ola...@gmail.com wrote:
 
  Hi,
 
  I've got a error on one of our Apache/Tomcat servers with binding, it
  works in Jetty and another Apache/Tomcat server.
 
  It looks like lift is calling some of the function setters after
  calling a method on a StatefullSnippet. For example,
  in the example below, v = who(Full(v)) would be getting called after
  doProcess() is called
 bind(hello, xhtml, whoField -- text(who.openOr(), v
  = who(Full(v)) ), submit -- submit(?(Send), ignore =
  doProcess() ) )
 
  Has anyone got any idea what might be going on?
 
  What kind of machine is the problem happening on (OS, processor, speed,
  number of processors)?
  Can you send me the static HTML generated by a page that's causing the
  problem?
  Thanks,
  David
 
 
  cheers
  Oliver
 
 
 
 
 
  --
  Lift, the simply functional web framework http://liftweb.net
  Collaborative Task Management http://much4.us
  Follow me: http://twitter.com/dpp
  Git some: http://github.com/dpp
 
  
 





 --
 Lift, the simply functional web framework http://liftweb.net
 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
 Git some: http://github.com/dpp

 


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[Lift] Re: Binding Problem - Help

2008-12-14 Thread Oliver

Thanks for all the help, it appears to all be working now - I had a
feeling I was going to be fed to the lions, wolves, tigers and bears
if I didn't find a fix, and quick.

One question, does the name generation have to be based on a random
number generator? I realize, with the length of the number I probably
won't see the same error in the life of the universe, but you never
know your luck.

On Mon, Dec 15, 2008 at 12:36 PM, David Pollak
feeder.of.the.be...@gmail.com wrote:


 On Sun, Dec 14, 2008 at 5:06 PM, Oliver ola...@gmail.com wrote:

 David

 Thanks for the prompt reply.

 I'll upgrade to the latest version of lift so I can use the fix when
 it comes in. Is everything relatively stable at the current snapshot?

 I've pushed the change.  Give it an hour or so to get built in Maven.
 The APIs are changing right now, but the code itself is stable (the APIs
 changes have not introduced defects.)
 Thanks,
 David


 cheers
 Oliver

 On Mon, Dec 15, 2008 at 11:47 AM, David Pollak
 feeder.of.the.be...@gmail.com wrote:
  Okay,
  The problem is that your computer is too fast. :-)
  Lift assigns function names based on the nano time.  It turns out that
  the
  methods are getting called so fast, there's no nano tick and the order
  of
  the function creation is not reflected in the function name.
  I've got a fix.  I'll roll it into Lift tonight or tomorrow.
  Thanks,
  David
 
  On Sun, Dec 14, 2008 at 3:44 PM, Oliver ola...@gmail.com wrote:
 
  Hi,
 
  Its Ubuntu Gutsy running a virtual vsx.
  The processor is a dual cpu 2.8
  Theres 2GB of memory, but Apache tomcat has 500MB.
 
  I'm running on a snapshot of lift webkit frozen at
  0.10-20080930.234135-129
 
  I'll send the html in a moment.
  Cheers
  Oliver
 
  On Mon, Dec 15, 2008 at 10:28 AM, David Pollak
  feeder.of.the.be...@gmail.com wrote:
  
  
   On Sun, Dec 14, 2008 at 3:17 PM, Oliver ola...@gmail.com wrote:
  
   Hi,
  
   I've got a error on one of our Apache/Tomcat servers with binding,
   it
   works in Jetty and another Apache/Tomcat server.
  
   It looks like lift is calling some of the function setters after
   calling a method on a StatefullSnippet. For example,
   in the example below, v = who(Full(v)) would be getting called
   after
   doProcess() is called
  bind(hello, xhtml, whoField -- text(who.openOr(),
   v
   = who(Full(v)) ), submit -- submit(?(Send), ignore =
   doProcess() ) )
  
   Has anyone got any idea what might be going on?
  
   What kind of machine is the problem happening on (OS, processor,
   speed,
   number of processors)?
   Can you send me the static HTML generated by a page that's causing
   the
   problem?
   Thanks,
   David
  
  
   cheers
   Oliver
  
  
  
  
  
   --
   Lift, the simply functional web framework http://liftweb.net
   Collaborative Task Management http://much4.us
   Follow me: http://twitter.com/dpp
   Git some: http://github.com/dpp
  
   
  
 
 
 
 
 
  --
  Lift, the simply functional web framework http://liftweb.net
  Collaborative Task Management http://much4.us
  Follow me: http://twitter.com/dpp
  Git some: http://github.com/dpp
 
  
 





 --
 Lift, the simply functional web framework http://liftweb.net
 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
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[Lift] Re: JPADemo weird disappearing boot

2008-10-08 Thread Oliver
I'm getting the error too :(  rotten boot

On Wed, Oct 8, 2008 at 4:47 PM, Charles F. Munat [EMAIL PROTECTED] wrote:


 I figured this out (sort of). The problem was in the master pom.xml. Not
 sure what it was, though.

 Chas.

 Charles F. Munat wrote:
  I seem to have lost my boot.
 
  I copied the JPADemo out of the liftweb source code and changed the poms
  and everything else to make it the basis for a new app I'm trying to get
  online this week.
 
  Everything compiles just fine, and the site works (sort of), but the
  Boot class fails to load. Here is the error:
 
  ERROR - Failed to Boot
  java.lang.ClassNotFoundException: bootstrap.liftweb.Boot
   at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
...
 
  Here's the stripped down Boot class:
 
  package bootstrap.liftweb
 
  import java.util.Locale
 
  import javax.servlet.http.HttpServletRequest
 
  import net.liftweb.util.{Can,Empty,Full,LoanWrapper,LogBoot}
  import net.liftweb.http._
  import net.liftweb.sitemap._
  import net.liftweb.sitemap.Loc._
  import org.wsbg.model._
  import S.?
 
  class Boot {
 def boot {
 
   // where to search snippet
   LiftRules.addToPackages(org.myapp)
 
 }
  }
 
  Everything has been changed from com.foo.jpademo to org.myapp
  appropriately. Where can I look to determine why Boot isn't found?
 
  Thanks,
  Chas.
 
  

 


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[Lift] error page

2008-10-02 Thread Oliver
I don't want to display the default error page to the user. How do I replace
it with my own?

cheers
Oliver

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[Lift] Re: error page

2008-10-02 Thread Oliver Lambert

I tried

 LiftRules.logAndReturnExceptionToBrowser = {
   case (request, e) = println(what is going on);  
RedirectResponse(/)
   case _ = println(whatis going on 2); RedirectResponse(/)
 }

No change in behavior

On 02/10/2008, at 6:03 PM, Marius wrote:


 Or you can use LiftRules.logAndReturnExceptionToBrowser ...actually
 browserResponseToException  is ultimately called by
 logAndReturnExceptionToBrowser

 On Oct 2, 10:59 am, Marius [EMAIL PROTECTED] wrote:
 Hi,

 Please see LiftRules.browserResponseToException ... this is called
 when an exception is thrown from the application. Here you can
 intercept the Throwable and redirect to your own error page  using
 RedirectResponse or RedirectWithState.

 Br's,
 Marius

 On Oct 2, 10:48 am, Oliver [EMAIL PROTECTED] wrote:

 I don't want to display the default error page to the user. How do  
 I replace
 it with my own?

 cheers
 Oliver
 


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[Lift] Todays questions

2008-10-02 Thread Oliver
I'm writing a wizard-like process, where when they have finished the set of
forms and press submit I don't want the back button to take them back. Is
there any way I can clear out the history?

I guess a related question is, Lift is holding references to objects in its
history that I would like to be made available to garbage collection. For
instance, I have a table of html links - once one is selected, I can set the
holding collection to null, but lift is still holding a reference for its
history.

cheers
Oliver

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[Lift] Re: Todays questions

2008-10-02 Thread Oliver
Thanks for the answers

Another related question - Is there any functionality in lift to prevent
multiple submits (e.g. the browser is slow for whatever reason and the user
presses the submit button multiple times)?

cheers
Oliver

On Fri, Oct 3, 2008 at 10:15 AM, David Pollak [EMAIL PROTECTED]
 wrote:



 On Thu, Oct 2, 2008 at 5:13 PM, Oliver [EMAIL PROTECTED] wrote:

 I'm writing a wizard-like process, where when they have finished the set
 of forms and press submit I don't want the back button to take them back. Is
 there any way I can clear out the history?


 This is JavaScript magic and I'm not sure how to disable it.




 I guess a related question is, Lift is holding references to objects in
 its history that I would like to be made available to garbage collection.
 For instance, I have a table of html links - once one is selected, I can set
 the holding collection to null, but lift is still holding a reference for
 its history.


 I have a number of GC methodologies that I'm working one.  Basically, Lift
 will hold certain references for a period of time (right now that period is
 the session, but it will get shorter).

 Thanks,

 David




 cheers
 Oliver





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 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
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[Lift] Re: JPA and enumerations

2008-10-02 Thread Oliver
On Thu, Oct 2, 2008 at 11:07 PM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 OK, I've run into problems again now that I'm trying to actually use the
 enumerations. In my book class I have the variable defined as:

   @Type{val `type` = com.foo.jpaweb.model.GenreType}
   var genre = Genre.unknown


Enumv.Value(name: String, desc: String) should be returning a type of Value
(Val is the implementation). I'll fix this, or you can.


 [WARNING]  found   : com.foo.jpaweb.model.Genre.Value
 [WARNING]  required: com.foo.jpaweb.model.Genre.Val

 I tried changing the variable definition to

 var genre : Genre.Value = Genre.unknown

 But then I get a runtime error when I run my unit tests:

 java.lang.NoSuchMethodError:
 com.foo.jpaweb.model.Book.genre_$eq(Lscala/Enumeration$Val;)V


I don't get this error, can you supply me the test code?



 It appears that setting genre to Genre.unknown makes its type Genre.Val
 instead of Genre.Value, but I have no idea how to fix it at this point.

 Thanks,

 Derek




 On Wed, Oct 1, 2008 at 11:38 PM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 Doh. I missed where you had extended it. It works now that I'm using it
 correctly (imagine that!)

 Thanks much,

 Derek


 On Wed, Oct 1, 2008 at 5:08 PM, Oliver [EMAIL PROTECTED] wrote:

 You have to extend it - I did it at the top of the model, but it probably
 makes sense to create a separate file(s).
 So Gender would have a corresponding type
 class GenderType extends EnumvType(Gender) {}

 and then you can use
   @Type{val `type`=com.foo.jpaweb.model.GenderType}

 I hadn't coded a user type in Scala before either and I couldn't find a
 way to generically do all enumerations as one user type - Scala is just too
 strict.

 hope that helps

 Oliver

 On Thu, Oct 2, 2008 at 6:58 AM, Derek Chen-Becker [EMAIL PROTECTED]
  wrote:

 Hmmm. Oliver, I'm working on using the UserType you wrote now, but when
 I try to test it, I'm getting this error:

 org.hibernate.MappingException: Cannot instantiate custom type:
 com.foo.jpaweb.model.EnumvType

 At first I thought this was because EnumvType was abstract, but changing
 that didn't do anything. I've set the property on the Book class as:

   @Type{val `type` = com.foo.jpaweb.model.EnumvType}
   var genre = Genre.unknown

 Is the not correct? Any ideas? I've only ever used Hibernate Types that
 were written in Java, so I wasn't sure if that might also be an issue...

 Derek


 On Mon, Sep 22, 2008 at 8:29 AM, Derek Chen-Becker 
 [EMAIL PROTECTED] wrote:

 Looks good. In keeping with the theme of a Library catalog I'm going to
 rework Gender as Genre and add things like Mystery, Horror, Comedy,
 Childrens' , etc. I think I can just put the Money on as a purchase price.

 Thanks,

 Derek

 On Sun, Sep 21, 2008 at 1:19 AM, Oliver Lambert [EMAIL PROTECTED]wrote:

 Hi,

 I've extended the JPA Demo project to include hibernate mappings for
 Money and Enumerations.
 The example money is Australian, but its simple enough to add other
 currencies.
 The example enumeration is for Gender - I've mapped the name of the
 enumeration rather than
 the ordinal value and extended it to include a description field,
 valueOf method and list of name value pairs.

 Hope its of use
 Oliver






 On 21/09/2008, at 1:40 PM, Jorge Ortiz wrote:

 
  On Sat, Sep 20, 2008 at 9:14 AM, Oliver Lambert [EMAIL PROTECTED]
  wrote:
 
  I need this too so I might have a go at implementing it. Does lift
  persist
  enumerations (cant see a mapper it)
 
  There's a MappedEnum class in MappedInt.scala

 Thanks for this - I should have looked more
 
 
  --j
 
  








 



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[Lift] Re: JPA and enumerations

2008-10-01 Thread Oliver
You have to extend it - I did it at the top of the model, but it probably
makes sense to create a separate file(s).
So Gender would have a corresponding type
class GenderType extends EnumvType(Gender) {}

and then you can use
  @Type{val `type`=com.foo.jpaweb.model.GenderType}

I hadn't coded a user type in Scala before either and I couldn't find a way
to generically do all enumerations as one user type - Scala is just too
strict.

hope that helps

Oliver

On Thu, Oct 2, 2008 at 6:58 AM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 Hmmm. Oliver, I'm working on using the UserType you wrote now, but when I
 try to test it, I'm getting this error:

 org.hibernate.MappingException: Cannot instantiate custom type:
 com.foo.jpaweb.model.EnumvType

 At first I thought this was because EnumvType was abstract, but changing
 that didn't do anything. I've set the property on the Book class as:

   @Type{val `type` = com.foo.jpaweb.model.EnumvType}
   var genre = Genre.unknown

 Is the not correct? Any ideas? I've only ever used Hibernate Types that
 were written in Java, so I wasn't sure if that might also be an issue...

 Derek


 On Mon, Sep 22, 2008 at 8:29 AM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 Looks good. In keeping with the theme of a Library catalog I'm going to
 rework Gender as Genre and add things like Mystery, Horror, Comedy,
 Childrens' , etc. I think I can just put the Money on as a purchase price.

 Thanks,

 Derek

 On Sun, Sep 21, 2008 at 1:19 AM, Oliver Lambert [EMAIL PROTECTED] wrote:

 Hi,

 I've extended the JPA Demo project to include hibernate mappings for
 Money and Enumerations.
 The example money is Australian, but its simple enough to add other
 currencies.
 The example enumeration is for Gender - I've mapped the name of the
 enumeration rather than
 the ordinal value and extended it to include a description field,
 valueOf method and list of name value pairs.

 Hope its of use
 Oliver






 On 21/09/2008, at 1:40 PM, Jorge Ortiz wrote:

 
  On Sat, Sep 20, 2008 at 9:14 AM, Oliver Lambert [EMAIL PROTECTED]
  wrote:
 
  I need this too so I might have a go at implementing it. Does lift
  persist
  enumerations (cant see a mapper it)
 
  There's a MappedEnum class in MappedInt.scala

 Thanks for this - I should have looked more
 
 
  --j
 
   





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[Lift] Re: Making Record a reality [was: Validations, Server side controls etc]

2008-09-24 Thread Oliver Lambert

Hey Chas,

No worries, I re-read too and understood the tone of your reply.
I'm playing devils advocate on validation to try to get a flexible
framework for everyone to use.

Ol
On 24/09/2008, at 4:07 PM, Charles F. Munat wrote:


 Charles F. Munat wrote:
 Running Ajax calls between fields for validation is pretty ugly,
 javascript validation would be better

 That's what I said.

 Sorry, Oliver. On re-reading, that sounds a little snippy, but I  
 didn't
 mean it that way. I just meant that we agree -- after mentioning it  
 as a
 possibility, I said it would be unnecessary since JavaScript would  
 have
 to be working anyway.

 Chas.

 


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[Lift] Re: bind and enumerations

2008-09-18 Thread Oliver
Ha that's it - I was hoping they would magically work like java enum's :)

thanks
Ol
On Thu, Sep 18, 2008 at 2:33 PM, David Pollak [EMAIL PROTECTED] wrote:

  It's because you have to create each of the Enumeration's String
 representations manually:

 scala object Gender extends Enumeration {
  | val Unknown = Value(0, Unknown)
  | val Male = Value(1, Male)
  | val Female = Value(2, Female)
  | }
 defined module Gender

 scala Gender.elements.toList
 res3: List[Gender.Value] = List(Unknown, Male, Female)

 scala Gender.elements.toList.map(v = (v, v.toString))
 res4: List[(Gender.Value, java.lang.String)] = List((Unknown,Unknown),
 (Male,Male), (Female,Female))



 Oliver wrote:

 When I saw this answer, I was really hoping it would work.
 Unfortunately,
 Gender.elements.toList.map(v = (v, v.toString))
 gives me
 List((a.Gender(0),a.Gender(0)), (a.Gender(1),a.Gender(1)))

 On Thu, Sep 18, 2008 at 12:56 PM, David Pollak 
 [EMAIL PROTECTED] wrote:

 var g: Can[Gender] = Empty

 SHtml.selectObj(Gender.elements.toList.map(v = (v, v.toString)), g, v =
 g = Full(v))


 On Wed, Sep 17, 2008 at 7:33 PM, Charles F. Munat [EMAIL PROTECTED] wrote:


 I'm using an enumeration for Gender:

 @serializable
 object Gender extends Enumeration {
   type Gender = Value
   val Male, Female = Value
 }

 import Gender._

 How do I use this in bind? And is there an easy way to create a drop
 down list with blank, Male, and Female options?

 Thanks!

 Chas.





 --
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 Collaborative Task Management http://much4.us
 Follow me: http://twitter.com/dpp
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[Lift] Re: RBAC in Lift

2008-09-11 Thread Oliver Lambert

I'm also interested in authorization and authentication.  If your  
going to
use a application server like Glassfish, JAAS is possibility.

However, I'm trying to decide whether to use Acegi (without Spring)
or look at something like JSecurity.  Any thoughts as to which would
be a better fit with Lift?

Oliver

On 08/09/2008, at 9:24 AM, Charles F. Munat wrote:


 I'm building a website for a group that wants to have different levels
 of access to the site. Essentially, there will be five roles, from  
 Admin
 down to Guest, with each role having access to different parts of  
 the site.

 Some pages will only be accessible to users with a specific role. For
 example, the CRUD pages controlling users will only be accessible to
 those in the Admin role.

 On other pages, most of the page will be public, but parts of the page
 will only become visible if the user is a) logged in, and b) in the
 proper role.

 Blocking entire pages can obviously be done in the SiteMap with some
 sort of conditional statement.

 I'm guessing that the best way to handle the partial pages is with
 snippets, with the snippet displaying a blank or particular content
 depending on the user's role.

 But there are also other considerations. Users will have their own
 pages, so views of those pages may be limited to the particular user
 (such as a page to update one's profile), or, optionally, made  
 public by
 that user (such as a bio).

 Does anyone have any suggestions for the best practice for going about
 this, or an example they can show me?

 Thanks for any and all help. I'm slowly figuring out the SiteMap and
 menu functions and hope to put together a tutorial on that shortly.

 Chas.

 


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[Lift] Re: JPA w/Scala

2008-09-10 Thread Oliver
Hi Derek,

this is looking good

On Wed, Sep 10, 2008 at 2:55 AM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 OK, the code is merged in and the latest version is attached. I made a few
 minor modifications to the JPA code that Oliver sent:

 1. I made the openEM and closeEM methods abstract and protected. The idea
 is that the JPA class shouldn't be tied to the way the user wants to access
 JPA. Rather, when they implement the JPA class they can provide their own
 hooks to do direct access, IoC, or JNDI, etc.

 2. I added a convenience method for createNamedQuery so that you can pass
 parameters in when you create the query. A very minor change but it saves a
 little typing when you use it a lot.


I like this, it saves typing and reads a lot better



 I've also changed the module naming per Oliver's suggestion. I'll test
 against the other DBs this afternoon, but so far I've had no issues with
 HSQLDB.


I've also tested it against SQL Server 2000 and it runs without any problems
(unfortunately, I don't have SQL Server 2005 or later, to test against)



 Derek


 On Tue, Sep 9, 2008 at 8:35 AM, Derek Chen-Becker [EMAIL PROTECTED]wrote:

 Looks like I missed a lot in the two days I was gone :). I'm going to look
 at Oliver's code and merge it. As for Tim's problem with the insertions, the
 AUTO ID generation should usually just work. I don't have a SQL Server
 instance to try it out on, but after I merge the code I'll test it again
 with HSQL, PostgreSQL and MySQL to make sure that it works there. If so, it
 may be something specific to the SQL Server dialect.

 Derek


 On Tue, Sep 9, 2008 at 5:09 AM, Oliver Lambert [EMAIL PROTECTED] wrote:



 On 09/09/2008, at 7:47 PM, Tim Perrett wrote:

 
  I agree - its strange and not what we would expect.
 
  What version of SQL server are you running? Im using 2005 Enterprise
  here...
 
 I think thats what they are using at my company


  Its just a really strange thing, the 100 is always ignored... I think
  it just needs a 2nd parameter there, even if its going to ignore it.
  Thats certainly what it looks like from the SQL thats being run
  anyway. I would have thought the GenerationType.IDENTITY would mean
  that it knows not to use it in SQL inserts/updates, but obviously not.
 
 I assume that you have run a simple unit test to do an insert with
 persist e.g.
   def testOK = {

 val na = new Author()
 na.name = HELLO THERE!
 Model.persist(na)

 val authors = Model.createNamedQuery[Author]
 (findAllAuthors).getResultList()

  authors.foreach(author = {
 println(name: +author.name)
 author.books.foreach(book = println(   title: +book.title))
   })
   }

 If you are still having problems, mvn clean your project, zip it up
 and mail it to me - I'll run it tomorrow morning, when I get to work

 Oliver


  Cheers
 
  Tim
  






 


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[Lift] Re: JPA w/Scala

2008-09-09 Thread Oliver Lambert


On 09/09/2008, at 7:47 PM, Tim Perrett wrote:


 I agree - its strange and not what we would expect.

 What version of SQL server are you running? Im using 2005 Enterprise
 here...

I think thats what they are using at my company


 Its just a really strange thing, the 100 is always ignored... I think
 it just needs a 2nd parameter there, even if its going to ignore it.
 Thats certainly what it looks like from the SQL thats being run
 anyway. I would have thought the GenerationType.IDENTITY would mean
 that it knows not to use it in SQL inserts/updates, but obviously not.

I assume that you have run a simple unit test to do an insert with  
persist e.g.
   def testOK = {

 val na = new Author()
 na.name = HELLO THERE!
 Model.persist(na)

 val authors = Model.createNamedQuery[Author] 
(findAllAuthors).getResultList()

 authors.foreach(author = {
 println(name: +author.name)
 author.books.foreach(book = println(   title: +book.title))
   })
   }

If you are still having problems, mvn clean your project, zip it up  
and mail it to me - I'll run it tomorrow morning, when I get to work

Oliver


 Cheers

 Tim
 


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