[Lift] Re: Highlighting even/odd rows in a table
Personally, I would just go with this:
http://franca.exofire.net/jq/colorize
I've used it very successfully on one of my projects.
Cheers, Tim
On Dec 17, 2:07 am, Ross Mellgren dri...@gmail.com wrote:
Oh, speaking of jquery, tablesorter also has a zebra plugin that does this,
so if you're tablesorter you can use that also.
-Ross
On Dec 16, 2009, at 9:01 PM, Alex Boisvert wrote:
Or delegate the work to the browser using jQuery + CSS
http://docs.jquery.com/Selectors/odd
alex
On Wed, Dec 16, 2009 at 4:04 PM, Ross Mellgren dri...@gmail.com wrote:
You could use customers.zipWithIndex.flatMap({ case (customer, index)
= ... instead of customers.flatMap(customer = to get the index, and
then use index % 2 == 0 to see if it's an even row or an odd row. How
you get that style into your template is up to you -- using an
attribute bind param would probably be pretty easy, or emitting the
td straight out of the snippet.
If you need more guidance give a shout and I'll write you up some
example code.
Note that zipWithIndex only works on List, and it regenerates the
list, so if you have a bunch of customers on the page and are
concerned about performance you might want to do something different
(and less convenient).
-Ross
On Dec 16, 2009, at 5:59 PM, Stevo wrote:
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently defined)
case customers =
customers.flatMap(customer = bind(cust,
chooseTemplate
(customer, entry, xhtml),
name -
Text(emptyIfNull(customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone -
Text(emptyIfNull(customer.workPhone.is)),
other -
Text(emptyIfNull(customer.other.is)),
fax -
Text(emptyIfNull(customer.workFax.is)),
email -
Text(emptyIfNull(customer.email.is)),
url -
Text(emptyIfNull(customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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[Lift] Re: Latest API Documentation
As Indrajit already pointed out, the aggregation feature is something experimental in vscaladoc so not something that we can include in our build process just yet. We appreciate that people want these, but its not feasible yet so I guess we'll be doing it for major releases until its feasible to make it an automated process. Perhaps davidB can shed some light on when this will be a proper part of vscaladoc Cheers, Tim On Dec 17, 7:18 am, Vesa brut...@gmail.com wrote: I would also appreciate aggregated docs. It would be great to have these at least for the M-releases.. - Vesa On 7 marras, 05:47, aw anth...@whitford.com wrote: OK, so I can go tohttp://scala-tools.org/mvnsites/liftweb-1.1-7/ but I am not finding a comprehensive ScalaDoc similar to what is available here:http://scala-tools.org/scaladocs/liftweb/1.0/ It is hard (and SLOW) for me to figure out which component a class/ object might reside, and find its corresponding ScalaDoc... Or am I not seeing it? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Is this a defect at JqJsCmds.ModalDialog
Hi Alex,
I found new ModalDialog(html: NodeSeq, css: Box[JsObj]),
the parameter 'css' type is JsObj instead of String.
Could you tell me the reason?
I'm working on a customer widgets and have the same case.
On Thu, Dec 3, 2009 at 10:37 PM, Alex Boisvert alex.boisv...@gmail.comwrote:
On Thu, Dec 3, 2009 at 12:40 AM, Xuefeng Wu ben...@gmail.com wrote:
Hi,
When I use ModalDialog I want to setup the css but fail,
My code would be:
ModalDialog(someHtml, top: '10px')
I found the ModalDialog code at Lift:
class ModalDialog(html: NodeSeq, css: Box[String]) extends JsCmd {
val toJsCmd = jQuery.blockUI({ message: +
AltXML.toXML(Group(S.session.map(s =
s.fixHtml(s.processSurroundAndInclude(Modal Dialog,
html))).openOr(html)), false, true, S.ieMode).encJs +
(css.map(w = , css: ' + w + ' ).openOr()) + });
}
the css is wrap by ' ' ,
but I found http://malsup.com/jquery/block/#demos
the css is wraped by { }
Is this a defect at JqJsCmds.ModalDialog or I do something wrong?
Yes, it looks like a bug. I'm guessing the code may have been written for
BlockUI v1.x and that the API may have changed in 2.x.Please open a
ticket and I'll fix it.
alex
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Re: [Lift] Is this a defect at JqJsCmds.ModalDialog
OK, I found the JsObj is useful, Thanks.
On Thu, Dec 17, 2009 at 5:28 PM, Xuefeng Wu ben...@gmail.com wrote:
Hi Alex,
I found new ModalDialog(html: NodeSeq, css: Box[JsObj]),
the parameter 'css' type is JsObj instead of String.
Could you tell me the reason?
I'm working on a customer widgets and have the same case.
On Thu, Dec 3, 2009 at 10:37 PM, Alex Boisvert alex.boisv...@gmail.comwrote:
On Thu, Dec 3, 2009 at 12:40 AM, Xuefeng Wu ben...@gmail.com wrote:
Hi,
When I use ModalDialog I want to setup the css but fail,
My code would be:
ModalDialog(someHtml, top: '10px')
I found the ModalDialog code at Lift:
class ModalDialog(html: NodeSeq, css: Box[String]) extends JsCmd {
val toJsCmd = jQuery.blockUI({ message: +
AltXML.toXML(Group(S.session.map(s =
s.fixHtml(s.processSurroundAndInclude(Modal Dialog,
html))).openOr(html)), false, true, S.ieMode).encJs +
(css.map(w = , css: ' + w + ' ).openOr()) + });
}
the css is wrap by ' ' ,
but I found http://malsup.com/jquery/block/#demos
the css is wraped by { }
Is this a defect at JqJsCmds.ModalDialog or I do something wrong?
Yes, it looks like a bug. I'm guessing the code may have been written
for BlockUI v1.x and that the API may have changed in 2.x.Please open a
ticket and I'll fix it.
alex
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[Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8
The same code works fine in 1.1M7. Anyone know what causes the problem. Or maybe a bug in 1.1M8? boot.scala: DB.defineConnectionManager(DefaultConnectionIdentifier, new StandardDBVendor (com.mysql.jdbc.Driver, jdbc:mysql:// localhost/mydb?autoReconnectForPools=true, root, )) the error message: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name/pre/ph3Caused by:/ h3prejava.lang.NullPointerException: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$.newConnection(DB.scala:90) at net.liftweb.mapper.DB$.getConnection(DB.scala:186) at net.liftweb.mapper.DB$.use(DB.scala:446) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1 (DB.scala:160) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162) at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91) at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143) at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146) at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit $1.apply(S.scala:1112) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala: ) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply $31.apply(S.scala:1133) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala: 1132) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28.apply(S.scala:1130) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1.apply (S.scala:1129) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_innerInit(S.scala:1128) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41$$anonfun$apply$42.apply (S.scala:1175) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41.apply(S.scala:1174) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:248) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40.apply(S.scala:1173) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.TransientRequestVarHandler$.apply(Vars.scala:252) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39.apply(S.scala:1172) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38.apply (S.scala:1171) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1.apply(S.scala:1170) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$._init(S.scala:1169) at net.liftweb.http.S$.init(S.scala:825) at net.liftweb.http.S$.initIfUninitted(S.scala:1514) at net.liftweb.http.Req$.apply(Req.scala:140) at net.liftweb.http.provider.HTTPProvider$class.service (HTTPProvider.scala:52) at net.liftweb.http.LiftFilter.service(LiftServlet.scala:523) at net.liftweb.http.provider.servlet.ServletFilterProvider $class.protected$service(ServletFilterProvider.scala:43) at
Re: [Lift] Skittr example in bad shape
On Thu, Dec 17, 2009 at 4:35 AM, Vesa brut...@gmail.com wrote:
Hi,
I was trying to run the skittr example from the lift-examples and it
doesn't seem to work. It's demonstrating usage of comet but it doesn't
get that far as the comet actor never receives any messages due to a
bug. Also the indentation is a mix of spaces and tabs of different
width and looks quite messed up. How should I deliver a fix when I'm
done?
There's a single simple bug. When we moved from Scala Actors to Lift
Actors, we moved from a case object AddTimelineViewer to case class
AddTimelineViewer(who: SimpleActor[Any]) Unfortunately, the compiler didn't
flag the actor ! AddTimelineViewer line as a bug... it converted the line to
actor ! (who = AddTimelineViewer.apply) and passed a function as a
message. I've fixed the code locally (WatchUser.scala lines 49-52 become):
override def localSetup {
userActor = name.flatMap(name = UserList.find(name))
userActor.foreach{ua = ua ! AddTimelineViewer(this) ; messages = (ua
!? GetTimeline) match {case Timeline(m) = m; case _ = Nil}}
}
I'll get a patch onto review board by end of day today.
- Vesa
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[Lift] Re: Funny behavior of head merging with nested head blocks
Hello,
I have a head element in my default template with a standard title
element.
When I define a head element in my snippet with a new title element,
it is appended into the head section of my resulting html.
Now there are two title element and the browser uses the first one.
I thought the title element in my default template will be replaced
with the one I defined in my snippet.
Is there another way to achieve this?
with best regards
On 16 Dez., 21:54, David Pollak feeder.of.the.be...@gmail.com wrote:
On Wed, Dec 16, 2009 at 11:55 AM, Ross Mellgren dri...@gmail.com wrote:
I was diagnosing some incorrect HTML in our application using Lift,
and I found a strange behavior of head merging (I assume) when you
emit a head tag into a head tag from the snippet. The code speaks
better than I do about this:
...
object Dialog extends DispatchSnippet {
val standardDialogOptions: JsObj = JsObj(
autoOpen - false,
bgiframe - true,
modal - true,
resizable - false
)
val dispatch: DispatchIt = {
case head = renderHead
case render = render
}
def renderHead(ns: NodeSeq): NodeSeq =
head{ Script { JsCrVar(pxStandardDialogOptions,
Dialog.standardDialogOptions) } }/head
...
}
LiftRules.snippetDispatch.append {
...
case Dialog = Dialog
...
}
lift:surround with=default at=content
head
titleEmail Editor/title
lift:Dialog.head /
/head
/lift:surround
I agree I'm doing the wrong thing here -- the lift:Dialog.head / tag
rightly should be outside of the head block, or the snippet should not
emit head. However, the resulting behavior is funny (certainly more
funny than I'd expect):
html xmlns:lift=http://liftweb.net/; xmlns=http://www.w3.org/1999/xhtml
head
...
titleEmail Editor/title
script type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script
headscript type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script/head
/head
...
/html
Ideally I'd like this to just work so that it doesn't matter
precisely where the snippet is called, though it would be some special
magic just to work around an erroneous case. But, the behavior that
does happen seems odd, duplicating the markup inside the head?
Should I file a bug? Just smile and nod?
If we had to recursively check all the head tags for head tags, that
would significantly increase the overhead of the rewrite phase. I would
suggest using the new Helpers.stripHead() call to remove head tags from
stuff you already know is in a head tag.
-Ross
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Re: [Lift] Is this a defect at JqJsCmds.ModalDialog
Good to hear. Yes, it felt more natural to pass a Json object since that's
what the BlockUI API expects.
alex
On Thu, Dec 17, 2009 at 1:41 AM, Xuefeng Wu ben...@gmail.com wrote:
OK, I found the JsObj is useful, Thanks.
On Thu, Dec 17, 2009 at 5:28 PM, Xuefeng Wu ben...@gmail.com wrote:
Hi Alex,
I found new ModalDialog(html: NodeSeq, css: Box[JsObj]),
the parameter 'css' type is JsObj instead of String.
Could you tell me the reason?
I'm working on a customer widgets and have the same case.
On Thu, Dec 3, 2009 at 10:37 PM, Alex Boisvert
alex.boisv...@gmail.comwrote:
On Thu, Dec 3, 2009 at 12:40 AM, Xuefeng Wu ben...@gmail.com wrote:
Hi,
When I use ModalDialog I want to setup the css but fail,
My code would be:
ModalDialog(someHtml, top: '10px')
I found the ModalDialog code at Lift:
class ModalDialog(html: NodeSeq, css: Box[String]) extends JsCmd {
val toJsCmd = jQuery.blockUI({ message: +
AltXML.toXML(Group(S.session.map(s =
s.fixHtml(s.processSurroundAndInclude(Modal Dialog,
html))).openOr(html)), false, true, S.ieMode).encJs +
(css.map(w = , css: ' + w + ' ).openOr()) + });
}
the css is wrap by ' ' ,
but I found http://malsup.com/jquery/block/#demos
the css is wraped by { }
Is this a defect at JqJsCmds.ModalDialog or I do something wrong?
Yes, it looks like a bug. I'm guessing the code may have been written
for BlockUI v1.x and that the API may have changed in 2.x.Please open a
ticket and I'll fix it.
alex
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Re: [Lift] Re: Funny behavior of head merging with nested head blocks
On Thu, Dec 17, 2009 at 7:32 AM, greekscala hellectro...@gmail.com wrote:
Hello,
I have a head element in my default template with a standard title
element.
When I define a head element in my snippet with a new title element,
it is appended into the head section of my resulting html.
Now there are two title element and the browser uses the first one.
I thought the title element in my default template will be replaced
with the one I defined in my snippet.
Is there another way to achieve this?
The short answer is no. Lift's head support de-dups top-level tags in
head but does not overwrite a tag.
with best regards
On 16 Dez., 21:54, David Pollak feeder.of.the.be...@gmail.com wrote:
On Wed, Dec 16, 2009 at 11:55 AM, Ross Mellgren dri...@gmail.com
wrote:
I was diagnosing some incorrect HTML in our application using Lift,
and I found a strange behavior of head merging (I assume) when you
emit a head tag into a head tag from the snippet. The code speaks
better than I do about this:
...
object Dialog extends DispatchSnippet {
val standardDialogOptions: JsObj = JsObj(
autoOpen - false,
bgiframe - true,
modal - true,
resizable - false
)
val dispatch: DispatchIt = {
case head = renderHead
case render = render
}
def renderHead(ns: NodeSeq): NodeSeq =
head{ Script { JsCrVar(pxStandardDialogOptions,
Dialog.standardDialogOptions) } }/head
...
}
LiftRules.snippetDispatch.append {
...
case Dialog = Dialog
...
}
lift:surround with=default at=content
head
titleEmail Editor/title
lift:Dialog.head /
/head
/lift:surround
I agree I'm doing the wrong thing here -- the lift:Dialog.head / tag
rightly should be outside of the head block, or the snippet should not
emit head. However, the resulting behavior is funny (certainly more
funny than I'd expect):
html xmlns:lift=http://liftweb.net/; xmlns=
http://www.w3.org/1999/xhtml
head
...
titleEmail Editor/title
script type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script
headscript type=text/javascript
// ![CDATA[
var pxStandardDialogOptions = {autoOpen: false, bgiframe: true,
modal: true, resizable: false};
// ]]
/script/head
/head
...
/html
Ideally I'd like this to just work so that it doesn't matter
precisely where the snippet is called, though it would be some special
magic just to work around an erroneous case. But, the behavior that
does happen seems odd, duplicating the markup inside the head?
Should I file a bug? Just smile and nod?
If we had to recursively check all the head tags for head tags, that
would significantly increase the overhead of the rewrite phase. I would
suggest using the new Helpers.stripHead() call to remove head tags from
stuff you already know is in a head tag.
-Ross
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[Lift] mysql database password
Hi, I've added the following code to change the database to mysql.
However our code is open source and is freely browsable so It would be
nice to hash the password somehow.
Does anybody have an idea how to do this in LIFT?
Thanks,
itsjar
object DBArxum extends ConnectionManager {
def newConnection(name : ConnectionIdentifier): Box[Connection] = {
try {
Class.forName(com.mysql.jdbc.Driver)
val dm = DriverManager.getConnection(jdbc:mysql://localhost/
arxum?user=rootpassword=blablablabla)
Full(dm)
} catch {
case e : Exception = e.printStackTrace; Empty
}
}
def releaseConnection(conn: Connection) {conn.close}
}
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[Lift] Re: mysql database password
Use a properties file and don't include that in your source code
commits. Here's another thread on it:
http://groups.google.com/group/liftweb/browse_thread/thread/c156b9de99f3bce/
On Dec 17, 8:22 am, itsjar its...@gmail.com wrote:
Hi, I've added the following code to change the database to mysql.
However our code is open source and is freely browsable so It would be
nice to hash the password somehow.
Does anybody have an idea how to do this in LIFT?
Thanks,
itsjar
object DBArxum extends ConnectionManager {
def newConnection(name : ConnectionIdentifier): Box[Connection] = {
try {
Class.forName(com.mysql.jdbc.Driver)
val dm = DriverManager.getConnection(jdbc:mysql://localhost/
arxum?user=rootpassword=blablablabla)
Full(dm)
} catch {
case e : Exception = e.printStackTrace; Empty
}
}
def releaseConnection(conn: Connection) {conn.close}
}
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Re: [Lift] Re: Highlighting even/odd rows in a table
I can recommend it too. I've just used it in an open-source project
soon-to-be-released.
alex
On Thu, Dec 17, 2009 at 1:14 AM, Timothy Perrett timo...@getintheloop.euwrote:
Personally, I would just go with this:
http://franca.exofire.net/jq/colorize
I've used it very successfully on one of my projects.
Cheers, Tim
On Dec 17, 2:07 am, Ross Mellgren dri...@gmail.com wrote:
Oh, speaking of jquery, tablesorter also has a zebra plugin that does
this, so if you're tablesorter you can use that also.
-Ross
On Dec 16, 2009, at 9:01 PM, Alex Boisvert wrote:
Or delegate the work to the browser using jQuery + CSS
http://docs.jquery.com/Selectors/odd
alex
On Wed, Dec 16, 2009 at 4:04 PM, Ross Mellgren dri...@gmail.com
wrote:
You could use customers.zipWithIndex.flatMap({ case (customer, index)
= ... instead of customers.flatMap(customer = to get the index, and
then use index % 2 == 0 to see if it's an even row or an odd row. How
you get that style into your template is up to you -- using an
attribute bind param would probably be pretty easy, or emitting the
td straight out of the snippet.
If you need more guidance give a shout and I'll write you up some
example code.
Note that zipWithIndex only works on List, and it regenerates the
list, so if you have a bunch of customers on the page and are
concerned about performance you might want to do something different
(and less convenient).
-Ross
On Dec 16, 2009, at 5:59 PM, Stevo wrote:
Say for a second that in one of my Snippets I have the following
binding:
def view(xhtml: NodeSeq): NodeSeq =
{
val entries: NodeSeq = Customer.findAll() match
{
case Nil = Text(No customers currently
defined)
case customers =
customers.flatMap(customer =
bind(cust, chooseTemplate
(customer, entry, xhtml),
name - Text(emptyIfNull(
customer.name.is)),
address - Text
(customer.workAddress.obj.open_!.singleTextLine),
phone - Text(emptyIfNull(
customer.workPhone.is)),
other - Text(emptyIfNull(
customer.other.is)),
fax - Text(emptyIfNull(
customer.workFax.is)),
email - Text(emptyIfNull(
customer.email.is)),
url - Text(emptyIfNull(
customer.email.is
}
bind(customer, xhtml, entry - entries)
}
Is there a way that I could apply a style to a complete
customer:entry
with the goal of highlighting even/odd rows?
Let me know and best regards to all,
Steve
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[Lift] Problem in Lift 1.1-SNAPSHOT ?
While compiling my samples with Lift 1.1-SNAPSHOT I get this Compiler- Error: [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net \liftweb\hello\snippet\TD.scala:76: error: object creation impossible, since method doSync in trait AnyVarTrait of type [F](= F)F is not defined [INFO] object QueryNotDone extends SessionVar(false) Any ideas ? Regards Paul -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Problem in Lift 1.1-SNAPSHOT ?
Did you do an mvn clean compile? On Thu, Dec 17, 2009 at 9:27 AM, earthling_paul paul.ber...@gmail.comwrote: While compiling my samples with Lift 1.1-SNAPSHOT I get this Compiler- Error: [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net \liftweb\hello\snippet\TD.scala:76: error: object creation impossible, since method doSync in trait AnyVarTrait of type [F](= F)F is not defined [INFO] object QueryNotDone extends SessionVar(false) Any ideas ? Regards Paul -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] heapsize
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Re: [Lift] Confused about validation
Indeed, if you're building a lot of forms, you quickly realize that Lift currently requires fair amount of code for forms that are not backed by mapper elements. There's space there for better abstrations / DSL improvements to reduce boilerplate -- similar to what David has built for the new wizard. alex On Wed, Dec 16, 2009 at 8:47 AM, greekscala hellectro...@gmail.com wrote: Hello lift people, lift seems very promising. I am trying to make some tests and examples because I am new to lift. I wanted to add some validation to a form element and show the validation error to the user. But after little searching I was a little disappointet to see that there is no such support, exept when using Mapper. I do not want to use Mapper. I want only simple field validation with the errors messages printed in a feedback panel. Before lift I was using Wicket. I think they did a good job with the validators. I try to understand why lift has not such support? I do not want to code everything in my submit method and validate things there. best regards -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] heapsize
On Thu, Dec 17, 2009 at 10:56 AM, jack jack.wid...@gmail.com wrote: How do I increase the heapsize in Lift? Nothing Lift-specific here. Just the usual java -Xmx2048m (or whichever amount you need). If your starting Lift via Tomcat/Jetty, then usually you place this in one of the startup scripts, or as JAVA_OPTS environment variable. e.g., export JAVA_OPTS=-Xmx2048m alex -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Confused about validation
What would such an abstraction do? What code would you like to write (including templates) and what should it do? - Alex Boisvertalex.boisv...@gmail.com wrote: Indeed, if you're building a lot of forms, you quickly realize that Lift currently requires fair amount of code for forms that are not backed by mapper elements. There's space there for better abstrations / DSL improvements to reduce boilerplate -- similar to what David has built for the new wizard. alex On Wed, Dec 16, 2009 at 8:47 AM, greekscala hellectro...@gmail.com wrote: Hello lift people, lift seems very promising. I am trying to make some tests and examples because I am new to lift. I wanted to add some validation to a form element and show the validation error to the user. But after little searching I was a little disappointet to see that there is no such support, exept when using Mapper. I do not want to use Mapper. I want only simple field validation with the errors messages printed in a feedback panel. Before lift I was using Wicket. I think they did a good job with the validators. I try to understand why lift has not such support? I do not want to code everything in my submit method and validate things there. best regards -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Confused about validation
I think the idea is to be a little more declarative on defining the form and
separate the low-level concerns of handling all the events to a more generic
form handler,
object ShipToForm extends Form {
val name = Variable[String](customerName)
val address1: Variable[String]()
val address2: Variable[String]()
val state: Variable[String]()
val zip: Variable[String]()
val form =
TextField(Name, name, StringLengthValidator(30)) ++
TextField(Address 1, address1, StringLengthValidator(20)) ++
TextField(Address 2, address2, StringLengthValiator(20)) ++
TextField(State, state, listOfStates) ++
TextField(Zip, zip, ZipCodeValidator) ++
) ++ FullAddressValidator(address1, address2, state, zip)
val onSubmit = {
// everything has been validated
}
}
bind(shipTo, AjaxifyForm(ShipToForm))
or
bind(shipTo, PlainOldForm(ShipToForm))
alex
On Thu, Dec 17, 2009 at 11:07 AM, Naftoli Gugenheim naftoli...@gmail.comwrote:
What would such an abstraction do?
What code would you like to write (including templates) and what should it
do?
-
Alex Boisvertalex.boisv...@gmail.com wrote:
Indeed, if you're building a lot of forms, you quickly realize that Lift
currently requires fair amount of code for forms that are not backed by
mapper elements. There's space there for better abstrations / DSL
improvements to reduce boilerplate -- similar to what David has built for
the new wizard.
alex
On Wed, Dec 16, 2009 at 8:47 AM, greekscala hellectro...@gmail.com
wrote:
Hello lift people,
lift seems very promising. I am trying to make some tests
and examples because I am new to lift.
I wanted to add some validation to a form element and show
the validation error to the user.
But after little searching I was a little disappointet to see that
there
is no such support, exept when using Mapper. I do not want to use
Mapper. I want only simple field validation with the errors messages
printed in a feedback panel.
Before lift I was using Wicket. I think they did a good job with the
validators.
I try to understand why lift has not such support? I do not want to
code
everything in my submit method and validate things there.
best regards
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[Lift] Re: Highlighting even/odd rows in a table
Thanks for the JQuery recommendations - I really like the way these are done and will pursue whichever is least intrusive in my project. Thanks again and best regards, Steve Thompson -- -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] use S and templating without state?
I have a simple web page that is not based on any session state, only on the provided params and the contents of the datastore: http://foursquare.com/iphone/achievements?uid=209cityid=22 Can I serve this page from Lift's statelessDispatchTable and still using templating (and possibly S?) so that no Lift/Jetty session is created when serving this page? -harryh -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: Problem in Lift 1.1-SNAPSHOT ?
I checkout the source code from GitHub, do mvn clean compile and the output is: lift-modules/lift-jta/src/main/scala/net/liftweb/transaction/ TransactionContext.scala:206: error: class TransactionContext needs to be abstract, since method getUnitName in trait ScalaEMFactory of type = String is not defined class TransactionContext(private implicit val transactionService: TransactionService) ^ one error found The source code from GitHub is not always compilable. On Dec 18, 3:17 am, David Pollak feeder.of.the.be...@gmail.com wrote: Did you do an mvn clean compile? On Thu, Dec 17, 2009 at 9:27 AM, earthling_paul paul.ber...@gmail.comwrote: While compiling my samples with Lift 1.1-SNAPSHOT I get this Compiler- Error: [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net \liftweb\hello\snippet\TD.scala:76: error: object creation impossible, since method doSync in trait AnyVarTrait of type [F](= F)F is not defined [INFO] object QueryNotDone extends SessionVar(false) Any ideas ? Regards Paul -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Scala to JavaScript DSL ...
I think I'm nearly there (that is a working equivalent of your sample) with
G-d's help...
-
Mariusmarius.dan...@gmail.com wrote:
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner syntax. I'll
try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a lot
this support and it's great but if your JS code that you want to send down
to the browser (say as an Ajax or Comet partial update response) gets a bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use JsRaw
to write the JavaScript fragment in order for the code reader to understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an assignment
6. JsFunc declares a JS function
7. JsAnonFunc declares an anonymous function
8. 'myFunc(1, 2, do it, 'home) is simply a javascript function invocation
by providing 4 parameter.
9. ~ is just a function that chains statements that don;t necessarily end in
;
Do you think that something like this would be usable in Lift?
Br's,
Marius
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[Lift] Generalized jQuery function missing?
Does something like this exist? I didn't see it, but maybe it was in my blind
spot
case class JqFunc(function:String, params:JsExp*) extends JsExp with
JQueryRight with JQueryLeft {
override val toJsCmd = function + ( + params.map(_.toJsCmd).mkString(,)
+ )
}
If not, i'll put in a ticket and add it. Would be very useful for non common
functions.
= Jon
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[Lift] Re: use S and templating without state?
Harry, isn't it just the same as if you were serving, say, a REST api request? Add your Req case to the statelessDispatchTable and have it call a method of your choosing like so: case r @ Req(iphone :: achievements :: Nil, , GetRequest) = () = showAchievements(r). r is a Req instance and showAchievements get request params from it right like you would with S.param(). Peter On Dec 17, 1:28 pm, harryh har...@gmail.com wrote: I have a simple web page that is not based on any session state, only on the provided params and the contents of the datastore: http://foursquare.com/iphone/achievements?uid=209cityid=22 Can I serve this page from Lift's statelessDispatchTable and still using templating (and possibly S?) so that no Lift/Jetty session is created when serving this page? -harryh -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Generalized jQuery function missing?
I usually just make one, since it's very simple, plus it can verify at
compile time via the function type signature if you have the right
number and type of arguments.
-Ross
On Dec 17, 2009, at 5:59 PM, Jonathan Hoffman wrote:
Does something like this exist? I didn't see it, but maybe it was
in my blind spot
case class JqFunc(function:String, params:JsExp*) extends JsExp with
JQueryRight with JQueryLeft {
override val toJsCmd = function + ( + params.map
(_.toJsCmd).mkString(,) + )
}
If not, i'll put in a ticket and add it. Would be very useful for
non common functions.
= Jon
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Re: [Lift] Generalized jQuery function missing?
On Thu, Dec 17, 2009 at 2:59 PM, Jonathan Hoffman jonhoff...@gmail.comwrote:
Does something like this exist? I didn't see it, but maybe it was in my
blind spot
case class JqFunc(function:String, params:JsExp*) extends JsExp with
JQueryRight with JQueryLeft {
override val toJsCmd = function + ( +
params.map(_.toJsCmd).mkString(,) + )
}
If not, i'll put in a ticket and add it. Would be very useful for non
common functions.
Awesome. Yeah... please add all the Jquery helpers you can think of!
= Jon
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Re: [Lift] Re: Problem in Lift 1.1-SNAPSHOT ?
On Thu, Dec 17, 2009 at 2:08 PM, ngocdaothanh ngocdaoth...@gmail.comwrote: I checkout the source code from GitHub, do mvn clean compile and the output is: lift-modules/lift-jta/src/main/scala/net/liftweb/transaction/ TransactionContext.scala:206: error: class TransactionContext needs to be abstract, since method getUnitName in trait ScalaEMFactory of type = String is not defined class TransactionContext(private implicit val transactionService: TransactionService) ^ one error found The source code from GitHub is not always compilable. This is simply not true. The code on the master branch always compiles. I just did a checkout and compilation of the lift-jta module and it worked just fine. On Dec 18, 3:17 am, David Pollak feeder.of.the.be...@gmail.com wrote: Did you do an mvn clean compile? On Thu, Dec 17, 2009 at 9:27 AM, earthling_paul paul.ber...@gmail.com wrote: While compiling my samples with Lift 1.1-SNAPSHOT I get this Compiler- Error: [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net \liftweb\hello\snippet\TD.scala:76: error: object creation impossible, since method doSync in trait AnyVarTrait of type [F](= F)F is not defined [INFO] object QueryNotDone extends SessionVar(false) Any ideas ? Regards Paul -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Confused about validation
I think I have to split the wizard stuff out so you can declare a single
screen with validation.
On Thu, Dec 17, 2009 at 11:23 AM, Alex Boisvert alex.boisv...@gmail.comwrote:
I think the idea is to be a little more declarative on defining the form
and separate the low-level concerns of handling all the events to a more
generic form handler,
object ShipToForm extends Form {
val name = Variable[String](customerName)
val address1: Variable[String]()
val address2: Variable[String]()
val state: Variable[String]()
val zip: Variable[String]()
val form =
TextField(Name, name, StringLengthValidator(30)) ++
TextField(Address 1, address1, StringLengthValidator(20)) ++
TextField(Address 2, address2, StringLengthValiator(20)) ++
TextField(State, state, listOfStates) ++
TextField(Zip, zip, ZipCodeValidator) ++
) ++ FullAddressValidator(address1, address2, state, zip)
val onSubmit = {
// everything has been validated
}
}
bind(shipTo, AjaxifyForm(ShipToForm))
or
bind(shipTo, PlainOldForm(ShipToForm))
alex
On Thu, Dec 17, 2009 at 11:07 AM, Naftoli Gugenheim
naftoli...@gmail.comwrote:
What would such an abstraction do?
What code would you like to write (including templates) and what should it
do?
-
Alex Boisvertalex.boisv...@gmail.com wrote:
Indeed, if you're building a lot of forms, you quickly realize that Lift
currently requires fair amount of code for forms that are not backed by
mapper elements. There's space there for better abstrations / DSL
improvements to reduce boilerplate -- similar to what David has built for
the new wizard.
alex
On Wed, Dec 16, 2009 at 8:47 AM, greekscala hellectro...@gmail.com
wrote:
Hello lift people,
lift seems very promising. I am trying to make some tests
and examples because I am new to lift.
I wanted to add some validation to a form element and show
the validation error to the user.
But after little searching I was a little disappointet to see that
there
is no such support, exept when using Mapper. I do not want to use
Mapper. I want only simple field validation with the errors messages
printed in a feedback panel.
Before lift I was using Wicket. I think they did a good job with the
validators.
I try to understand why lift has not such support? I do not want to
code
everything in my submit method and validate things there.
best regards
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Re: [Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8
Please try doing a mvn clean and then retry your application. I have seen no problems with the dozen+ Lift apps I work with related to connections not working between M7 and M8. On Thu, Dec 17, 2009 at 5:59 AM, Jarod Liu liuyuan...@gmail.com wrote: The same code works fine in 1.1M7. Anyone know what causes the problem. Or maybe a bug in 1.1M8? boot.scala: DB.defineConnectionManager(DefaultConnectionIdentifier, new StandardDBVendor (com.mysql.jdbc.Driver, jdbc:mysql:// localhost/mydb?autoReconnectForPools=true, root, )) the error message: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name/pre/ph3Caused by:/ h3prejava.lang.NullPointerException: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$.newConnection(DB.scala:90) at net.liftweb.mapper.DB$.getConnection(DB.scala:186) at net.liftweb.mapper.DB$.use(DB.scala:446) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1 (DB.scala:160) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162) at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91) at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143) at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146) at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit $1.apply(S.scala:1112) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala: ) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply $31.apply(S.scala:1133) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala: 1132) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28.apply(S.scala:1130) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1.apply (S.scala:1129) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_innerInit(S.scala:1128) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41$$anonfun$apply$42.apply (S.scala:1175) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41.apply(S.scala:1174) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:248) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40.apply(S.scala:1173) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.TransientRequestVarHandler$.apply(Vars.scala:252) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39.apply(S.scala:1172) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38.apply (S.scala:1171) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1.apply(S.scala:1170) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$._init(S.scala:1169) at net.liftweb.http.S$.init(S.scala:825) at net.liftweb.http.S$.initIfUninitted(S.scala:1514) at net.liftweb.http.Req$.apply(Req.scala:140) at
[Lift] Re: use S and templating without state?
Sorry, I forget you wanted to use templating. You'd want your showAchievements() to return an XHTMLResponse with the html you've build. TemplateFinder can help, but LiftSession.processSurroundAndInclude which you'd use to execute any snippets in it naturally isn't available. I'm not sure what you'd do, to be honest. Peter On Dec 17, 2:59 pm, Peter Robinett pe...@bubblefoundry.com wrote: Harry, isn't it just the same as if you were serving, say, a REST api request? Add your Req case to the statelessDispatchTable and have it call a method of your choosing like so: case r @ Req(iphone :: achievements :: Nil, , GetRequest) = () = showAchievements(r). r is a Req instance and showAchievements get request params from it right like you would with S.param(). Peter On Dec 17, 1:28 pm, harryh har...@gmail.com wrote: I have a simple web page that is not based on any session state, only on the provided params and the contents of the datastore: http://foursquare.com/iphone/achievements?uid=209cityid=22 Can I serve this page from Lift's statelessDispatchTable and still using templating (and possibly S?) so that no Lift/Jetty session is created when serving this page? -harryh -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] AWS related Lift modules
Folks, Jon mentioned he's got some S3-related code he might dump into Lift when he has a chance. Having that sooner rather than later would be a win for me... also if anyone out there has SQS related code, I'd love to see that in Lift... or I'll write it next week. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: use S and templating without state?
On Thu, Dec 17, 2009 at 4:17 PM, Peter Robinett pe...@bubblefoundry.comwrote: Sorry, I forget you wanted to use templating. You'd want your showAchievements() to return an XHTMLResponse with the html you've build. TemplateFinder can help, but LiftSession.processSurroundAndInclude which you'd use to execute any snippets in it naturally isn't available. I'm not sure what you'd do, to be honest. I'm working on an example ;-) Peter On Dec 17, 2:59 pm, Peter Robinett pe...@bubblefoundry.com wrote: Harry, isn't it just the same as if you were serving, say, a REST api request? Add your Req case to the statelessDispatchTable and have it call a method of your choosing like so: case r @ Req(iphone :: achievements :: Nil, , GetRequest) = () = showAchievements(r). r is a Req instance and showAchievements get request params from it right like you would with S.param(). Peter On Dec 17, 1:28 pm, harryh har...@gmail.com wrote: I have a simple web page that is not based on any session state, only on the provided params and the contents of the datastore: http://foursquare.com/iphone/achievements?uid=209cityid=22 Can I serve this page from Lift's statelessDispatchTable and still using templating (and possibly S?) so that no Lift/Jetty session is created when serving this page? -harryh -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Re: AWS related Lift modules
I'd love to see that. While I'm throwing out wishes, it's be great to have a generic file store frontend and an S3 specific backend just like how Mapper and Record have different datastore drivers. But I have no need for this, it'd just be cool. Peter On Dec 17, 4:17 pm, David Pollak feeder.of.the.be...@gmail.com wrote: Folks, Jon mentioned he's got some S3-related code he might dump into Lift when he has a chance. Having that sooner rather than later would be a win for me... also if anyone out there has SQS related code, I'd love to see that in Lift... or I'll write it next week. Thanks, David -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Scala to JavaScript DSL ...
Current state attached.
2009/12/17 Marius marius.dan...@gmail.com
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner syntax.
I'll try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed
here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a
lot
this support and it's great but if your JS code that you want to send
down
to the browser (say as an Ajax or Comet partial update response) gets a
bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use
JsRaw
to write the JavaScript fragment in order for the code reader to
understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I
started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance
we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows
definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an assignment
6. JsFunc declares a JS function
7. JsAnonFunc declares an anonymous function
8. 'myFunc(1, 2, do it, 'home) is simply a javascript function
invocation
by providing 4 parameter.
9. ~ is just a function that chains statements that don;t necessarily end
in
;
Do you think that something like this would be usable in Lift?
Br's,
Marius
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DSL.scala
Description: Binary data
Re: [Lift] By default DB.buildLoanWrapper is eager (Jeppe, please read)
On Tue, Dec 8, 2009 at 12:34 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote:
David Pollak feeder.of.the.be...@gmail.com writes:
Folks,
A month or so ago, I made the DB.buildLoanWrapper lazy. While it
provided a
request-duration transaction, it did not actually pull the JDBC
connection
from the pool until the first request for the JDBC connection. This led
to
some problems. Basically:
object MySnippet {
def render = synchronized {
... do a query in here
}
}
If some threads acquired the JDBC connection before invoking the snippet
while others acquired the JDBC connection inside the synchronized (note
it's
an object) render method, there could be a deadlock caused by JDBC pool
starvation. This is unexpected and not likely to manifest unless you've
got
a non-trivial number of threads servicing requests.
To avoid this unexpected situation, I returned DB.buildLoanWrapper to
being
eager, but you (and by you, I mean Jeppe), can also call
DB.buildLoanWrapper(false) which will have the newer, lazy behavior.
Thanks for the direct attention :-) I can see the problem, but just so
I understand this completely: Can we agree that,
1) The above pattern (global synchronized render method) is a rather bad
pattern, scalability wise?
I'm not sure, but it's come up to me privately from more than one site and
from more than 1 highly capable developer.
2) If there are no such methods (in user code), lazy connection acquiring
is fine?
Yes.
The question remains of course, if there are more such accidents waiting
to happen? I always try to avoid using synchronize in application code
(where possible :-) but I realize that Lift as a framework has to be
somewhat more low level.
Additionally, the default thread pool manager in Lift (ProtoDBVendor)
will
allow temporary pool expansion. If there are no connections available
after
waiting 50ms, the pool will be temporarily expanded.
Is there a limit to the expansion? (Before we know we've implemented
c3p0 :-)
There's now a mechanism for a hard limit on the expansion.
[...]
/Jeppe
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Re: [Lift] Re: Scala to JavaScript DSL ...
Okay!
The following code:
val jsFunc: JSFunc = Function(myFunc)(param1, param2) {case
param1 :: param2 :: Nil =
Var(someArray) := Array(1, 2, 3, 4, 5)
If(param1 30) {
val x = Var(x) // now we can use either x or 'x
x := (234 - 3) / 2 // calculation happens in scala
Var(y) := (2:Expr) * x * 2 // calculation happens in
javascript
'jsFunc(1, 2, do it, 'y)
val $ = JSIdent($)
$(#myID) 'attr(value, 123)
} Else {
'console 'log(=30)
}
ForEach(Var(i) In 'someArray) {
'console 'log(Hi there 'i)
}
Function()(arg1, arg2) { case arg1 :: arg2 :: Nil =
'alert(Anonymous function ( arg1 , arg2 ))
}(1,2)
}
println(jsFunc.toCode)
Produces:
function myFunc(param1, param2) {
var someArray
someArray = [1.0, 2.0, 3.0, 4.0, 5.0]
if((param1 30.0)) {
var x
x = 115.0
var y
y = ((2.0 * x) * 2.0)
jsFunc(1.0, 2.0, do it, y)
($(#myID)).attr(value, 123)
} else {
(console).log(=30)
}
var i
for(i in someArray) {
(console).log((Hi there + i))
}
function (arg1, arg2) {
alert(Anonymous function ( + arg1) + , ) arg2) + )))
}(1.0, 2.0)
}
It may be desirable that instead of defining your own names for Vars and
function parameters, names are auto-generated, since you can anyway use
typesafe scala identifiers. This would save boilerplate and produce more
obfuscated code, and other than the name generating algorithm is a trivial
change to make.
Note that since I am not familiar with Lift's JavaScript APIs I just wrote
my own AST, which consists of case classes that contain their data
parameters and a toCode method. Feel free to delete them and plug Lift's
classes instead--there is no dependency on anything unique about them.
Also note that to prevent string + ident from compiling as a string to be
outputted and instead output a + operation, you have two choices: use the
operator instead, which is replaced with + when either operand is a string,
or write (string:Expr) + ident.
2009/12/17 Naftoli Gugenheim naftoli...@gmail.com
Current state attached.
2009/12/17 Marius marius.dan...@gmail.com
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner syntax.
I'll try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed
here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a
lot
this support and it's great but if your JS code that you want to send
down
to the browser (say as an Ajax or Comet partial update response) gets a
bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use
JsRaw
to write the JavaScript fragment in order for the code reader to
understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I
started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance
we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows
definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an assignment
6. JsFunc declares a JS function
7. JsAnonFunc declares an anonymous function
8. 'myFunc(1, 2, do it, 'home) is simply a javascript function
invocation
by providing
Re: [Lift] Goals for type and method renaming for Lift 2.0 - was: Open discussion on Lift Name Calling practices
(Not sure why on Chrome the wiki article page is all centered. Reported it to Chrome.) Can everyone look over the article? Especially everyone quoted in it -- Kris, Jim, DPP, Heiko, and anyone who I may have missed -- can you make sure everything represents your opinion correctly? Then if there is any disagreement after everyone's opinion is clarified we need to make some decisions together. This should not take much time, but it's very valuable! Thanks. 2009/12/15 Naftoli Gugenheim naftoli...@gmail.com I compiled much of this thread into http://wiki.github.com/dpp/liftweb/about-naming-conventions in raw form. As we continue to discuss the naming goals and guidelines and vote or decide on controversial goals, that wiki page should become more consolidated and less of a copy-paste of a discussion. :) On Mon, Dec 14, 2009 at 6:32 PM, Kris Nuttycombe kris.nuttyco...@gmail.com wrote: On Mon, Dec 14, 2009 at 12:31 PM, David Pollak feeder.of.the.be...@gmail.com wrote: Folks, Lift allows developers to create web sites that are: Reliable (which includes secure) Maintainable/concise Highly interactive Easy to build High Performance Easy to on-board (initial understanding of the APIs) Lift's APIs should reflect these rank-ordered goals. Some of these goals are in tension with each other. For example, easy on-boarding (e.g., longer method names, more traditional imperative style) is in tension with concise. There's also a very diverse Lift community. I use Emacs for a lot of my Lift coding. I know folks who use TextMate for Lift coding. Having long method names assumes the use of an IDE which has name completion. Lift's APIs must serve both communities. People are coming to Lift from Java, Ruby, PHP, and other backgrounds. Assuming Scala conventions rather than a best choice for naming does a dis-service to the polygots. Further, most of Scala's API conventions except for the collections stuff is not in my opinion that well thought out or consistent. Many of Lift's APIs have evolved correctly based on actual usage patterns. For example, the initially counter-intuitive use of apply to set fields and vars works far better than any other mechanism, especially when chaining calls. I've tried many different mechanisms (e.g., update(), Pascal style :=, set(), etc.) for setting fields and the one that everybody gravitated to was apply(). We also have to consider the existing code base. I've personally got 150K lines of Lift-code under management. If we start breaking APIs without a compelling reason, it costs me money and it costs my clients less of my time. What's the impact to various different current users of Lift of breaking APIs without a compelling reason (and I like this name better than that name or this name is more consistent are not compelling reasons.) So, my criteria for any name changes (and this is not open to any type of negotiation and I've been 100% consistent about this since the discussion began) is: If the name change can be accomplished with a deprecation of the old name without breaking any existing APIs, then the name change can be the better name. If the name change is internal to Lift or is in a little-used feature (e.g., Kris's API changes in Loc) such that very few projects will likely be impacted by a name change and those that are impacted are sufficiently savvy that they will understand the change and be able to make it in a matter of minutes. Any class name or object name change that does not meet the above criteria must be compelling. For example, we changed from Scala Actors to Lift Actors. This was a substantial amount of breakage, but there were no alternatives and the Scala Actor memory retention issues were materially impacting many different sites and we had worked on various attempted solutions over a 10 month period. If we're going to break without deprecation and the breakage is going to impact a substantial part of the Lift community, there must be a compelling reason to make the breakage. On Sun, Dec 13, 2009 at 10:49 AM, Kris Nuttycombe kris.nuttyco...@gmail.com wrote: To this point, the only goals that have been recommended for this effort are those that I've noted below: 1) Remove ambiguity wherever possible! There are a number of places where very similar names are used to refer to utterly different things. 2) As an aide removing ambiguity, consider outlawing or eliminating extremely generic names, or else establish a single way in which a given name will be used across Lift. Examples are Field, Info, Holder, etc. In general, this is okay, but if there's a FooHolder that holds a Foo, what's wrong with that kind of naming? Holder is probably the least problematic of these. The only issue I have with it is that FooHolder doesn't say anything about why you might
Re: [Lift] Re: Scala to JavaScript DSL ...
I like the source for the DSL very much, I think it's very well written. Thanks
for sharing it.
-Ross
On Dec 17, 2009, at 9:34 PM, Naftoli Gugenheim wrote:
Okay!
The following code:
val jsFunc: JSFunc = Function(myFunc)(param1, param2) {case param1
:: param2 :: Nil =
Var(someArray) := Array(1, 2, 3, 4, 5)
If(param1 30) {
val x = Var(x) // now we can use either x or 'x
x := (234 - 3) / 2 // calculation happens in scala
Var(y) := (2:Expr) * x * 2 // calculation happens in javascript
'jsFunc(1, 2, do it, 'y)
val $ = JSIdent($)
$(#myID) 'attr(value, 123)
} Else {
'console 'log(=30)
}
ForEach(Var(i) In 'someArray) {
'console 'log(Hi there 'i)
}
Function()(arg1, arg2) { case arg1 :: arg2 :: Nil =
'alert(Anonymous function ( arg1 , arg2 ))
}(1,2)
}
println(jsFunc.toCode)
Produces:
function myFunc(param1, param2) {
var someArray
someArray = [1.0, 2.0, 3.0, 4.0, 5.0]
if((param1 30.0)) {
var x
x = 115.0
var y
y = ((2.0 * x) * 2.0)
jsFunc(1.0, 2.0, do it, y)
($(#myID)).attr(value, 123)
} else {
(console).log(=30)
}
var i
for(i in someArray) {
(console).log((Hi there + i))
}
function (arg1, arg2) {
alert(Anonymous function ( + arg1) + , ) arg2) + )))
}(1.0, 2.0)
}
It may be desirable that instead of defining your own names for Vars and
function parameters, names are auto-generated, since you can anyway use
typesafe scala identifiers. This would save boilerplate and produce more
obfuscated code, and other than the name generating algorithm is a trivial
change to make.
Note that since I am not familiar with Lift's JavaScript APIs I just wrote my
own AST, which consists of case classes that contain their data parameters
and a toCode method. Feel free to delete them and plug Lift's classes
instead--there is no dependency on anything unique about them.
Also note that to prevent string + ident from compiling as a string to be
outputted and instead output a + operation, you have two choices: use the
operator instead, which is replaced with + when either operand is a string,
or write (string:Expr) + ident.
2009/12/17 Naftoli Gugenheim naftoli...@gmail.com
Current state attached.
2009/12/17 Marius marius.dan...@gmail.com
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner syntax.
I'll try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite a lot
this support and it's great but if your JS code that you want to send down
to the browser (say as an Ajax or Comet partial update response) gets a bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use JsRaw
to write the JavaScript fragment in order for the code reader to understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I started
to define a JavaScript like DSL that IMO is closer to JavaScript form.
Attached is a source code smaple of how this looks like, so for instance we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and for(each) statements
2. Functions like __, __, ... __+, __- are function that alows definition
of boolean and/or algebraic expressions.
3. Wrap just wraps an expression into ()
4. Var defined a variable
5 := defines an
Re: [Lift] Re: Scala to JavaScript DSL ...
You're welcome. There's still some work to do; I would call it a proof of
concept. But I'll let Marius finish it up. :)
On Thu, Dec 17, 2009 at 10:18 PM, Ross Mellgren dri...@gmail.com wrote:
I like the source for the DSL very much, I think it's very well written.
Thanks for sharing it.
-Ross
On Dec 17, 2009, at 9:34 PM, Naftoli Gugenheim wrote:
Okay!
The following code:
val jsFunc: JSFunc = Function(myFunc)(param1, param2) {case
param1 :: param2 :: Nil =
Var(someArray) := Array(1, 2, 3, 4, 5)
If(param1 30) {
val x = Var(x) // now we can use either x or 'x
x := (234 - 3) / 2 // calculation happens in scala
Var(y) := (2:Expr) * x * 2 // calculation happens in
javascript
'jsFunc(1, 2, do it, 'y)
val $ = JSIdent($)
$(#myID) 'attr(value, 123)
} Else {
'console 'log(=30)
}
ForEach(Var(i) In 'someArray) {
'console 'log(Hi there 'i)
}
Function()(arg1, arg2) { case arg1 :: arg2 :: Nil =
'alert(Anonymous function ( arg1 , arg2 ))
}(1,2)
}
println(jsFunc.toCode)
Produces:
function myFunc(param1, param2) {
var someArray
someArray = [1.0, 2.0, 3.0, 4.0, 5.0]
if((param1 30.0)) {
var x
x = 115.0
var y
y = ((2.0 * x) * 2.0)
jsFunc(1.0, 2.0, do it, y)
($(#myID)).attr(value, 123)
} else {
(console).log(=30)
}
var i
for(i in someArray) {
(console).log((Hi there + i))
}
function (arg1, arg2) {
alert(Anonymous function ( + arg1) + , ) arg2) + )))
}(1.0, 2.0)
}
It may be desirable that instead of defining your own names for Vars and
function parameters, names are auto-generated, since you can anyway use
typesafe scala identifiers. This would save boilerplate and produce more
obfuscated code, and other than the name generating algorithm is a trivial
change to make.
Note that since I am not familiar with Lift's JavaScript APIs I just wrote
my own AST, which consists of case classes that contain their data
parameters and a toCode method. Feel free to delete them and plug Lift's
classes instead--there is no dependency on anything unique about them.
Also note that to prevent string + ident from compiling as a string to be
outputted and instead output a + operation, you have two choices: use the
operator instead, which is replaced with + when either operand is a string,
or write (string:Expr) + ident.
2009/12/17 Naftoli Gugenheim naftoli...@gmail.com
Current state attached.
2009/12/17 Marius marius.dan...@gmail.com
Let me know when you have something.
Br's,
Marius
On Dec 17, 8:58 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
I'm thinking of an approach to writing a DSL with a much cleaner
syntax. I'll try to put something together.
-
Marius Danciumarius.dan...@gmail.com wrote:
All,
I just want to see if there is any interest in the approach discussed
here.
As you know Lift has some interesting support for building JavaScript
constructs from Scala code usig JsExp, JsCmd etc classes. I used quite
a lot
this support and it's great but if your JS code that you want to send
down
to the browser (say as an Ajax or Comet partial update response) gets a
bit
more complicated then constructing the JS fragment leads IMO to some
cumbersome Scala code. I found myselft in quite a few situation to use
JsRaw
to write the JavaScript fragment in order for the code reader to
understand
what JavaScript code will be generated. But of course with JsRaw we put
everything into a String so I'm not a big fan of this approach. So I
started
to define a JavaScript like DSL that IMO is closer to JavaScript
form.
Attached is a source code smaple of how this looks like, so for
instance we
can have something like:
val js = JsFunc('myFunc, 'param1, 'param2) {
JsIf('param1 __ 30) {
Var('home) := Wrap(234 __- 3) __/ 2 `;`
Var('someArray) := JsArray(1, 2, 3, 4, 5) `;`
'myFunc(1, 2, do it, 'home) `;`
$(#myID) 'attr(value, 123) `;`
} ~
JsForEach(Var('i) in 'someArray) {
'console 'log(Hi there __+ 'i) `;`
} ~
JsAnonFunc('arg1, 'arg2) {
'alert(Anonymous function __+ 'arg1 __+ 'arg2)
}(1, 2) `;`
}
println(js.toJs)
this yields the following JavaScript code:
function myFunc( param1, param2 ) {
if (param1 30) {
var home = ( 234 - 3 ) / 2;
var someArray = [ 1, 2, 3, 4, 5 ];
myFunc(1, 2, do it, home);
$(#myID).attr(value, 123);}
for (var i in someArray) {
console.log(Hi there + i);}
function ( arg1, arg2 ) {
alert(Anonymous function + arg1 + arg2)
}(1, 2);
}
... ok I just droped nonsense code in there for exemplification. A few
words:
1. JsIf, JsForEach describe JavaScript if and
Re: [Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8
I've been fixing quite a few mapper bugs lately, but nothing that should have anything to do with connection handling... On Thu, Dec 17, 2009 at 5:16 PM, Timothy Perrett timo...@getintheloop.euwrote: This is funny - I actually recently started getting a strange drop in connection on one of my applications. Others that use mapper are fine, but this one in particular seems to bone after a while. I changed the connection info to localhost as the sql server is on the same machine, and that appears to have corrected the problem... to that end, has any of the connection stuff changed in mapper of late? If so, potentially there is a problem. Cheers, Tim On 18 Dec 2009, at 00:05, David Pollak wrote: Please try doing a mvn clean and then retry your application. I have seen no problems with the dozen+ Lift apps I work with related to connections not working between M7 and M8. On Thu, Dec 17, 2009 at 5:59 AM, Jarod Liu liuyuan...@gmail.com wrote: The same code works fine in 1.1M7. Anyone know what causes the problem. Or maybe a bug in 1.1M8? boot.scala: DB.defineConnectionManager(DefaultConnectionIdentifier, new StandardDBVendor (com.mysql.jdbc.Driver, jdbc:mysql:// localhost/mydb?autoReconnectForPools=true, root, )) the error message: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name/pre/ph3Caused by:/ h3prejava.lang.NullPointerException: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$.newConnection(DB.scala:90) at net.liftweb.mapper.DB$.getConnection(DB.scala:186) at net.liftweb.mapper.DB$.use(DB.scala:446) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1 (DB.scala:160) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162) at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91) at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143) at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146) at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit $1.apply(S.scala:1112) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala: ) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply $31.apply(S.scala:1133) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala: 1132) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28.apply(S.scala:1130) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1.apply (S.scala:1129) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_innerInit(S.scala:1128) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41$$anonfun$apply$42.apply (S.scala:1175) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41.apply(S.scala:1174) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:248) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40.apply(S.scala:1173) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at
Re: [Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8
On Thu, Dec 17, 2009 at 8:28 PM, Derek Chen-Becker dchenbec...@gmail.comwrote: I've been fixing quite a few mapper bugs lately, but nothing that should have anything to do with connection handling... I've been working on StandardDBVendor lately. On Thu, Dec 17, 2009 at 5:16 PM, Timothy Perrett timo...@getintheloop.euwrote: This is funny - I actually recently started getting a strange drop in connection on one of my applications. Others that use mapper are fine, but this one in particular seems to bone after a while. I changed the connection info to localhost as the sql server is on the same machine, and that appears to have corrected the problem... to that end, has any of the connection stuff changed in mapper of late? If so, potentially there is a problem. Cheers, Tim On 18 Dec 2009, at 00:05, David Pollak wrote: Please try doing a mvn clean and then retry your application. I have seen no problems with the dozen+ Lift apps I work with related to connections not working between M7 and M8. On Thu, Dec 17, 2009 at 5:59 AM, Jarod Liu liuyuan...@gmail.com wrote: The same code works fine in 1.1M7. Anyone know what causes the problem. Or maybe a bug in 1.1M8? boot.scala: DB.defineConnectionManager(DefaultConnectionIdentifier, new StandardDBVendor (com.mysql.jdbc.Driver, jdbc:mysql:// localhost/mydb?autoReconnectForPools=true, root, )) the error message: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name/pre/ph3Caused by:/ h3prejava.lang.NullPointerException: Looking for Connection Identifier ConnectionIdentifier(lift) but failed to find either a JNDI data source with the name lift or a lift connection manager with the correct name at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala: 97) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96) at net.liftweb.common.EmptyBox.openOr(Box.scala:372) at net.liftweb.mapper.DB$.newConnection(DB.scala:90) at net.liftweb.mapper.DB$.getConnection(DB.scala:186) at net.liftweb.mapper.DB$.use(DB.scala:446) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1 (DB.scala:160) at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162) at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91) at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143) at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146) at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit $1.apply(S.scala:1112) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala: ) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply $31.apply(S.scala:1133) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala: 1132) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$ $anonfun$apply$28.apply(S.scala:1130) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1.apply (S.scala:1129) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$.net$liftweb$http$S$$_innerInit(S.scala:1128) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41$$anonfun$apply$42.apply (S.scala:1175) at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40$$anonfun$apply$41.apply(S.scala:1174) at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:325) at net.liftweb.http.RequestVarHandler$.apply(Vars.scala:248) at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun $apply$39$$anonfun$apply$40.apply(S.scala:1173)
[Lift] Re: Problem in Lift 1.1-SNAPSHOT ?
I am sorry. That compilation error comes from Lift's branch for Scala 2.8. On 12月18日, 午前8:38, David Pollak feeder.of.the.be...@gmail.com wrote: On Thu, Dec 17, 2009 at 2:08 PM, ngocdaothanh ngocdaoth...@gmail.comwrote: I checkout the source code from GitHub, do mvn clean compile and the output is: lift-modules/lift-jta/src/main/scala/net/liftweb/transaction/ TransactionContext.scala:206: error: class TransactionContext needs to be abstract, since method getUnitName in trait ScalaEMFactory of type = String is not defined class TransactionContext(private implicit val transactionService: TransactionService) ^ one error found The source code from GitHub is not always compilable. This is simply not true. The code on the master branch always compiles. I just did a checkout and compilation of the lift-jta module and it worked just fine. On Dec 18, 3:17 am, David Pollak feeder.of.the.be...@gmail.com wrote: Did you do an mvn clean compile? On Thu, Dec 17, 2009 at 9:27 AM, earthling_paul paul.ber...@gmail.com wrote: While compiling my samples with Lift 1.1-SNAPSHOT I get this Compiler- Error: [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net \liftweb\hello\snippet\TD.scala:76: error: object creation impossible, since method doSync in trait AnyVarTrait of type [F](= F)F is not defined [INFO] object QueryNotDone extends SessionVar(false) Any ideas ? Regards Paul -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Goals for type and method renaming for Lift 2.0 - was: Open discussion on Lift Name Calling practices
2009/12/15 David Pollak feeder.of.the.be...@gmail.com 5) Avoid using abbreviations I disagree. When coding with a non-IDE, abbreviations make life much easier. When using abbreviations, could the abbreviation be documented even it if it the most mind numbingly obvious abbreviation as there will always be people from a different background who don't grok it. Cheers Jono -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Goals for type and method renaming for Lift 2.0 - was: Open discussion on Lift Name Calling practices
Is that sufficiently expressed in the wiki article draft (look for Jim)? If not, what would you add? - Jonathan Fergusonj...@spiralarm.com wrote: 2009/12/15 David Pollak feeder.of.the.be...@gmail.com 5) Avoid using abbreviations I disagree. When coding with a non-IDE, abbreviations make life much easier. When using abbreviations, could the abbreviation be documented even it if it the most mind numbingly obvious abbreviation as there will always be people from a different background who don't grok it. Cheers Jono -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] re: trying to get minimum needed for unit test to work using LIFT 1.1 and JPA
I am trying to test that my entities are working properly, but I get this at the end of the surefire output for the test: 1634 [main] INFO org.hibernate.cfg.annotations.CollectionBinder - Mapping collection: jblack.resumeapp.lift.model.Author.books - Book 1639 [main] INFO org.hibernate.cfg.AnnotationConfiguration - Hibernate Validator not found: ignoring 1739 [main] INFO org.hibernate.cfg.search.HibernateSearchEventListenerRegister - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled. [PersistenceUnit: jpaweb] Unable to build EntityManagerFactory I only have defined my classes in jblack.resumeapp.lift.model and created my unit test. The EntityManagerFactory seems to process my models properly. I haven't done anything with the snippets, so there are no RequestVar implementations for my new models. I had created the jpa sample so all I did was add my new classes there. Do I need to finish the steps in chapter 10 of the lift book to get my unit tests to pass at all? In an unchanged jpa sample I am missing the next lines, and I am not certain what must be done to resolve this, as the driver information isn't being processed at all. I use 'mvn clean install' to run my tests from the top level of my project, but if I do 'cd spa' then 'mvn install' I get the same results. 1805 [main] INFO org.hibernate.cfg.search.HibernateSearchEventListenerRegister - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled. 1977 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!) 1977 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 20 I am trying to get my test working so I can put back in my @OneToOne, @OneToMany and related columns and @PostLoad and related annotations, as I had another error when using these, so I have commented them out until I get the test working so far. Thank you. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
