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

[Oliver Lambert]

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

On Wed, Jun 17, 2009 at 4:14 PM, Derek Chen-Becker wrote:

> I agree that it's an issue. In my own defense, what I meant was not that I
> didn't think people would use more than one DB. I actually have several apps
> (not yet converted to Lift) that use 4 or more persistence units that
> represent various legacy databases. Rather, I failed to realize the problem
> that would arise from defining the EM factory as a singleton because when I
> wrote that code I didn't fully understand how member objects on classes
> worked. Other than that, I agree with your post :)
> Derek
>
> On Tue, Jun 16, 2009 at 5:38 PM, Meredith Gregory <
> lgreg.mered...@gmail.com> wrote:
>
>> Derek,
>>
>> 
>> You have just demonstrated a process that i have been talking about for
>> the last 15 years. People have a blind spot when it comes to thinking
>> compositionally. They think -- almost to a person -- about "god's eye view"
>> solutions where there's only one of some key solution component. They don't
>> think about solutions that are composed of ... (wait for it)... solutions!
>> It takes some serious training to think compositionally. Compositional
>> solutions, however, are the only realistic way to scale. When solutions are
>> compositional, you can *de*compose. The db example is a case in point.
>> One of the most natural ways to scale data access is sharding and
>> partitioning -- which requires upfront machinery to support decomposition of
>> the store.
>>
>> Lest you feel bad, note that some of the best scientific minds of all time
>> have fallen prey to this blind spot. Newtonian physics as well as Einstein's
>> update to Newton's proposal is a non-compositional solution. Quantum
>> mechanics also exhibits compositional failures. This is why physics is
>> failing to find proposals that link theories of gravitation (essentially
>> large scale) to quantum mechanical theories of the other forces (essentially
>> very small scale) -- the physical theories are non-compositional -- they
>> don't scale!
>>
>> One of the real things functional programming has going for it is that the
>> basic model of computation underlying the means of structuring and
>> manipulating programs is compositional. That's why it is important to have a
>> technology like Scala resting atop the incumbent execution model (JVM) being
>> deployed on web-scale problems. Compositionality is the only way to tackle
>> applications at global scale.
>> 
>>
>> Thanks for getting the fix to this problem in so quickly.
>>
>> Best wishes,
>>
>> --greg
>>
>>
>> On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker <
>> dchenbec...@gmail.com> wrote:
>>
>>> Using multiple EMs was not something I had considered when I wrote this.
>>> I think that I can modify the code to provide a __nameSalt def to
>>> differentiate instances. Let me work on it and I'll have something soon.
>>>
>>> Derek
>>>
>>>
>>> On 6/16/09, Jean-Luc  wrote:

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

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

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


 Jean-Luc

 2009/6/15 Jean-Luc 

>  Hello,
>
> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
> defined with RequestVarEM :
> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  //
> Motorbike database
> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  //
> Motorway database
>
> I thought one could access to any databases independently from any
> snippet as long as the correct Model object were used (ModelDb1 or 
> ModelDb2
> for exemple) ; but when I access both databases from the same page, the
> second database access issues a "Named query not found" exception.
>
> I have two snippets, one to display a list of "motorbike", another to
> display a list of "motorway" :
> - page1 :
> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() 
> =>
> ok
> - page2
> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() 
> =>
> ok
>>>

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

[Jorge Ortiz]

In Derek's defense, it's not how objects in classes work but how Lift
RequestVars work. Scala objects in classes aren't global singletons, just
per-class-instance singletons. But a Lift ReuqestVar object in a class is
pretty much a global singleton (unless you do some hacking like Derek did).

--j

On Tue, Jun 16, 2009 at 11:14 PM, Derek Chen-Becker
wrote:

> I agree that it's an issue. In my own defense, what I meant was not that I
> didn't think people would use more than one DB. I actually have several apps
> (not yet converted to Lift) that use 4 or more persistence units that
> represent various legacy databases. Rather, I failed to realize the problem
> that would arise from defining the EM factory as a singleton because when I
> wrote that code I didn't fully understand how member objects on classes
> worked. Other than that, I agree with your post :)
> Derek
>
> On Tue, Jun 16, 2009 at 5:38 PM, Meredith Gregory <
> lgreg.mered...@gmail.com> wrote:
>
>> Derek,
>>
>> 
>> You have just demonstrated a process that i have been talking about for
>> the last 15 years. People have a blind spot when it comes to thinking
>> compositionally. They think -- almost to a person -- about "god's eye view"
>> solutions where there's only one of some key solution component. They don't
>> think about solutions that are composed of ... (wait for it)... solutions!
>> It takes some serious training to think compositionally. Compositional
>> solutions, however, are the only realistic way to scale. When solutions are
>> compositional, you can *de*compose. The db example is a case in point.
>> One of the most natural ways to scale data access is sharding and
>> partitioning -- which requires upfront machinery to support decomposition of
>> the store.
>>
>> Lest you feel bad, note that some of the best scientific minds of all time
>> have fallen prey to this blind spot. Newtonian physics as well as Einstein's
>> update to Newton's proposal is a non-compositional solution. Quantum
>> mechanics also exhibits compositional failures. This is why physics is
>> failing to find proposals that link theories of gravitation (essentially
>> large scale) to quantum mechanical theories of the other forces (essentially
>> very small scale) -- the physical theories are non-compositional -- they
>> don't scale!
>>
>> One of the real things functional programming has going for it is that the
>> basic model of computation underlying the means of structuring and
>> manipulating programs is compositional. That's why it is important to have a
>> technology like Scala resting atop the incumbent execution model (JVM) being
>> deployed on web-scale problems. Compositionality is the only way to tackle
>> applications at global scale.
>> 
>>
>> Thanks for getting the fix to this problem in so quickly.
>>
>> Best wishes,
>>
>> --greg
>>
>>
>> On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker <
>> dchenbec...@gmail.com> wrote:
>>
>>> Using multiple EMs was not something I had considered when I wrote this.
>>> I think that I can modify the code to provide a __nameSalt def to
>>> differentiate instances. Let me work on it and I'll have something soon.
>>>
>>> Derek
>>>
>>>
>>> On 6/16/09, Jean-Luc  wrote:

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

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

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


 Jean-Luc

 2009/6/15 Jean-Luc 

>  Hello,
>
> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
> defined with RequestVarEM :
> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  //
> Motorbike database
> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  //
> Motorway database
>
> I thought one could access to any databases independently from any
> snippet as long as the correct Model object were used (ModelDb1 or 
> ModelDb2
> for exemple) ; but when I access both databases from the same page, the
> second database access issues a "Named query not found" exception.
>
> I have two snippets, one to display a list of "motorbike", another to
> display a list of "motorway" :
> - page1 :
> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() 
> =>
> ok
> - page2
> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() 
> =>
> ok
> - page3 : calling from page 3 motorbike & motorway snippets : Named
> query not found: Motorway.findAll
> - page4 : calling from page 4 motorway & motorbike snippets : Named
> query not found: Motorbike.findAll
> - page3 & cha

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

[Derek Chen-Becker]

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

On Tue, Jun 16, 2009 at 5:38 PM, Meredith Gregory
wrote:

> Derek,
>
> 
> You have just demonstrated a process that i have been talking about for the
> last 15 years. People have a blind spot when it comes to thinking
> compositionally. They think -- almost to a person -- about "god's eye view"
> solutions where there's only one of some key solution component. They don't
> think about solutions that are composed of ... (wait for it)... solutions!
> It takes some serious training to think compositionally. Compositional
> solutions, however, are the only realistic way to scale. When solutions are
> compositional, you can *de*compose. The db example is a case in point. One
> of the most natural ways to scale data access is sharding and partitioning
> -- which requires upfront machinery to support decomposition of the store.
>
> Lest you feel bad, note that some of the best scientific minds of all time
> have fallen prey to this blind spot. Newtonian physics as well as Einstein's
> update to Newton's proposal is a non-compositional solution. Quantum
> mechanics also exhibits compositional failures. This is why physics is
> failing to find proposals that link theories of gravitation (essentially
> large scale) to quantum mechanical theories of the other forces (essentially
> very small scale) -- the physical theories are non-compositional -- they
> don't scale!
>
> One of the real things functional programming has going for it is that the
> basic model of computation underlying the means of structuring and
> manipulating programs is compositional. That's why it is important to have a
> technology like Scala resting atop the incumbent execution model (JVM) being
> deployed on web-scale problems. Compositionality is the only way to tackle
> applications at global scale.
> 
>
> Thanks for getting the fix to this problem in so quickly.
>
> Best wishes,
>
> --greg
>
>
> On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker  > wrote:
>
>> Using multiple EMs was not something I had considered when I wrote this. I
>> think that I can modify the code to provide a __nameSalt def to
>> differentiate instances. Let me work on it and I'll have something soon.
>>
>> Derek
>>
>>
>> On 6/16/09, Jean-Luc  wrote:
>>>
>>> For your information, here is an extract of source code of RequestVarEM :
>>>
>>> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>>>object emVar extends RequestVar[EntityManager](openEM()) { ... }
>>> }
>>>
>>> EntityManager is stored in the singleton emVar; so, all db access of
>>> Model objects are made using the singleton emVar.
>>> => trait RequestVarEM allow only one connection to a database within the
>>> same HttpRequest context.
>>>
>>>
>>> Jean-Luc
>>>
>>> 2009/6/15 Jean-Luc 
>>>
  Hello,

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

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

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

 I joined a sample application, ...

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

 Jean-Luc

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

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

[Oliver Lambert]

2009/6/17 Meredith Gregory 

> Jeremy,
>
> Most excellent question award to you, sir!
>
> How to bootstrap thinking compositionally... this is what i did
>
>- learn some compositional idioms by heart
>   - do you know the shape of the paradoxical combinator by heart
>   - do you know the data making up a monad
>   - do you know the data making up a distributive law between monads
>   - use them in real world applications and see where they fail
>   - when is calculating the least/greatest fixpoint of a recursive
>   spec for a problem the suboptimal solution
>   - when is a monad not the answer
>   - when is an indexed form of composition inadequate
>   - improve them
>   - is it a situational improvement or
>   - a fundamental improvement
>   - see where the very programming model itself fails
>   - is functional composition the only sort of composition
>   - how is parallel composition like functional composition
>   - is parallel composition easily represented in categorical
>   composition
>   - improve it
>   - what is the view of the world in your notion of composition
>   - play with new programming models
>   - does your new notion of composition give rise to a whole
>   generation of different models
>   - invent new idioms in these models
>   - what are the things these models naturally express
>   - and teach them to someone who wishes to bootstrap thinking
>compositionally
>
> For myself, i was unhappy with the notion of name. The π-calculi and lambda
> calculi suffer a dependence on a notion of name. Both families of calculi
> require at least countably infinitely many names, and a notion of equality
> on names. If names have no internal structure then these theories *cannot
> be effective*.


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


> The reasons is that the notion of equality must then be realized as an
> infinitary table which cannot fit in any computer we have access to.
> Therefore, in effective theories, names must have internal structure. Since
> they have internal structure and are at least countably infinite, one is in
> danger of undermining the foundational character of these proposals for
> computing. Therefore, the only possible solution is that the notion of
> structured name must come from the notion of program proposed by the model.
> This argument is airtight. If you want a foundational model of computing
> with nominal structure, the nominal structure must derive from the notion of
> computation being put forward, i.e. it must *reflect* the notion of
> computation. This gives rise to all kinds of new an beautiful phenomena. One
> measure of your way into compositional thinking is whether this is
> happening. Is your approach to compositional thinking beginning to yield
> whole new aspects of computing, and new 'wholes' of computation, new forms
> of organization.
>
> Best wishes,
>
> --greg
>
> On Tue, Jun 16, 2009 at 7:31 PM, Jeremy Day  wrote:
>
>> Greg,
>>
>> On Tue, Jun 16, 2009 at 6:38 PM, Meredith Gregory <
>> lgreg.mered...@gmail.com> wrote:
>>
>>> It takes some serious training to think compositionally.
>>
>>
>> No doubt it is extremely tough to think compositionally, and it's all too
>> easy to fall back on non-compositional ways of thinking.  In a similar vein
>> it's all too easy to fall into procedural patterns when learning or working
>> with functional programming in a multi-paradigm language.  But what are good
>> ways for programmers to learn to think compositionally and, more
>> importantly, practice?  Do you know of any books or online references that
>> might help make the transition for anyone who is interested?
>>
>> Jeremy
>>
>>
>>
>
>
> --
> L.G. Meredith
> Managing Partner
> Biosimilarity LLC
> 1219 NW 83rd St
> Seattle, WA 98117
>
> +1 206.650.3740
>
> http://biosimilarity.blogspot.com
>
> >
>

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

[Meredith Gregory]

Jeremy,

Most excellent question award to you, sir!

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

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

For myself, i was unhappy with the notion of name. The π-calculi and lambda
calculi suffer a dependence on a notion of name. Both families of calculi
require at least countably infinitely many names, and a notion of equality
on names. If names have no internal structure then these theories *cannot be
effective*. The reasons is that the notion of equality must then be realized
as an infinitary table which cannot fit in any computer we have access to.
Therefore, in effective theories, names must have internal structure. Since
they have internal structure and are at least countably infinite, one is in
danger of undermining the foundational character of these proposals for
computing. Therefore, the only possible solution is that the notion of
structured name must come from the notion of program proposed by the model.
This argument is airtight. If you want a foundational model of computing
with nominal structure, the nominal structure must derive from the notion of
computation being put forward, i.e. it must *reflect* the notion of
computation. This gives rise to all kinds of new an beautiful phenomena. One
measure of your way into compositional thinking is whether this is
happening. Is your approach to compositional thinking beginning to yield
whole new aspects of computing, and new 'wholes' of computation, new forms
of organization.

Best wishes,

--greg

On Tue, Jun 16, 2009 at 7:31 PM, Jeremy Day  wrote:

> Greg,
>
> On Tue, Jun 16, 2009 at 6:38 PM, Meredith Gregory <
> lgreg.mered...@gmail.com> wrote:
>
>> It takes some serious training to think compositionally.
>
>
> No doubt it is extremely tough to think compositionally, and it's all too
> easy to fall back on non-compositional ways of thinking.  In a similar vein
> it's all too easy to fall into procedural patterns when learning or working
> with functional programming in a multi-paradigm language.  But what are good
> ways for programmers to learn to think compositionally and, more
> importantly, practice?  Do you know of any books or online references that
> might help make the transition for anyone who is interested?
>
> Jeremy
>
> >
>


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

+1 206.650.3740

http://biosimilarity.blogspot.com

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

[Jeremy Day]

Greg,

On Tue, Jun 16, 2009 at 6:38 PM, Meredith Gregory
wrote:

> It takes some serious training to think compositionally.


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

Jeremy

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[Lift] directory structure

[Oliver Lambert]

In Boot.scala can I call LiftRules.addToPackages multiple times to add
multiple directories with snippets in them?

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

cheers
Oliver

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[Lift] Re: Simple Link

[David Pollak]

On Tue, Jun 16, 2009 at 5:09 PM, Matt Williams  wrote:

>
> I thought as much - I think i've gotten used to helper overload from
> other frameworks and was looking to keep as much markup out of the
> snippets as possible.
> Would it be worth me creating helpers for such trivialities, or are
> they outside the project scope?


I don't think so... I think:

aHref("/foo/bar", "something")

is less meaningful in code than:

something

However, you should code your sites the way you want and you should build a
library that helps you.  If you want to open source it, others may find it
valuable and may start using it.

Thanks,

David


>
>
> On Jun 17, 12:54 am, David Pollak 
> wrote:
> > go there
> >
> > No need for any lift method to help
> >
> > On Jun 16, 2009 4:00 PM, "Makeable"  wrote:
> >
> > Is there a generator to create a simple non-stateful link, or should I
> > be manually creating the node?
> >
> > Kind Regards,
> >
> > Matt
>
> >
>


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

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[Lift] Re: Simple Link

[Matt Williams]

I thought as much - I think i've gotten used to helper overload from
other frameworks and was looking to keep as much markup out of the
snippets as possible.
Would it be worth me creating helpers for such trivialities, or are
they outside the project scope?

On Jun 17, 12:54 am, David Pollak 
wrote:
> go there
>
> No need for any lift method to help
>
> On Jun 16, 2009 4:00 PM, "Makeable"  wrote:
>
> Is there a generator to create a simple non-stateful link, or should I
> be manually creating the node?
>
> Kind Regards,
>
> Matt

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

[Oliver Lambert]

I think you have just volunteered to help refactor this code to make it more
composition friendly :)

On Wed, Jun 17, 2009 at 9:38 AM, Meredith Gregory
wrote:

> Derek,
>
> 
> You have just demonstrated a process that i have been talking about for the
> last 15 years. People have a blind spot when it comes to thinking
> compositionally. They think -- almost to a person -- about "god's eye view"
> solutions where there's only one of some key solution component. They don't
> think about solutions that are composed of ... (wait for it)... solutions!
> It takes some serious training to think compositionally. Compositional
> solutions, however, are the only realistic way to scale. When solutions are
> compositional, you can *de*compose. The db example is a case in point. One
> of the most natural ways to scale data access is sharding and partitioning
> -- which requires upfront machinery to support decomposition of the store.
>
> Lest you feel bad, note that some of the best scientific minds of all time
> have fallen prey to this blind spot. Newtonian physics as well as Einstein's
> update to Newton's proposal is a non-compositional solution. Quantum
> mechanics also exhibits compositional failures. This is why physics is
> failing to find proposals that link theories of gravitation (essentially
> large scale) to quantum mechanical theories of the other forces (essentially
> very small scale) -- the physical theories are non-compositional -- they
> don't scale!
>
> One of the real things functional programming has going for it is that the
> basic model of computation underlying the means of structuring and
> manipulating programs is compositional. That's why it is important to have a
> technology like Scala resting atop the incumbent execution model (JVM) being
> deployed on web-scale problems. Compositionality is the only way to tackle
> applications at global scale.
> 
>
> Thanks for getting the fix to this problem in so quickly.
>
> Best wishes,
>
> --greg
>
>
> On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker  > wrote:
>
>> Using multiple EMs was not something I had considered when I wrote this. I
>> think that I can modify the code to provide a __nameSalt def to
>> differentiate instances. Let me work on it and I'll have something soon.
>>
>> Derek
>>
>>
>> On 6/16/09, Jean-Luc  wrote:
>>>
>>> For your information, here is an extract of source code of RequestVarEM :
>>>
>>> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>>>object emVar extends RequestVar[EntityManager](openEM()) { ... }
>>> }
>>>
>>> EntityManager is stored in the singleton emVar; so, all db access of
>>> Model objects are made using the singleton emVar.
>>> => trait RequestVarEM allow only one connection to a database within the
>>> same HttpRequest context.
>>>
>>>
>>> Jean-Luc
>>>
>>> 2009/6/15 Jean-Luc 
>>>
  Hello,

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

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

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

 I joined a sample application, ...

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

 Jean-Luc

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


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

>>>
>>>
>>>
>>> --
>>> Jean-Luc Canela
>>> jlcane...@gmail.com
>>>
>>>
>>>
>>
>>
>>
>
>
> --
> L.G. Meredith
> Managing Partner
> Biosimilarity LLC
> 1219 NW 83rd St
> Seattle, WA 98117
>
> +1 206.650.3740
>
> http://biosimilarity.blogspot.com
>
>
> >
>

--~--~-~--~~~---~--~~
You recei

[Lift] Re: Simple Link

[David Pollak]

go there

No need for any lift method to help

On Jun 16, 2009 4:00 PM, "Makeable"  wrote:


Is there a generator to create a simple non-stateful link, or should I
be manually creating the node?

Kind Regards,

Matt


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

[Meredith Gregory]

Derek,


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

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

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


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

Best wishes,

--greg

On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker
wrote:

> Using multiple EMs was not something I had considered when I wrote this. I
> think that I can modify the code to provide a __nameSalt def to
> differentiate instances. Let me work on it and I'll have something soon.
>
> Derek
>
>
> On 6/16/09, Jean-Luc  wrote:
>>
>> For your information, here is an extract of source code of RequestVarEM :
>>
>> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>>object emVar extends RequestVar[EntityManager](openEM()) { ... }
>> }
>>
>> EntityManager is stored in the singleton emVar; so, all db access of Model
>> objects are made using the singleton emVar.
>> => trait RequestVarEM allow only one connection to a database within the
>> same HttpRequest context.
>>
>>
>> Jean-Luc
>>
>> 2009/6/15 Jean-Luc 
>>
>>>  Hello,
>>>
>>> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
>>> defined with RequestVarEM :
>>> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  // Motorbike
>>> database
>>> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  // Motorway
>>> database
>>>
>>> I thought one could access to any databases independently from any
>>> snippet as long as the correct Model object were used (ModelDb1 or ModelDb2
>>> for exemple) ; but when I access both databases from the same page, the
>>> second database access issues a "Named query not found" exception.
>>>
>>> I have two snippets, one to display a list of "motorbike", another to
>>> display a list of "motorway" :
>>> - page1 :
>>> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() =>
>>> ok
>>> - page2
>>> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() =>
>>> ok
>>> - page3 : calling from page 3 motorbike & motorway snippets : Named query
>>> not found: Motorway.findAll
>>> - page4 : calling from page 4 motorway & motorbike snippets : Named query
>>> not found: Motorbike.findAll
>>> - page3 & changing the query of *Motorway* snippet :
>>>   - 
>>> ModelDb2.createNamedQuery[*Motorbike*]("*Motorbike*.findAll).getResultList()
>>> => it's ok and I do NOT have an exception !
>>>
>>> I joined a sample application, ...
>>>
>>> any idea about this issue ?
>>> (bad use of LocalEMF in the application code ? issue with LocalEMF or
>>> RequestVarEM ?)
>>>
>>> Jean-Luc
>>>
>>> PS :
>>> I don't know if it's related but I have this in the log :
>>> [INFO] Checking for multiple versions of scala
>>> [WARNING] Multiple versions of scala libraries detected!
>>>
>>>
>>> --
>>> Jean-Luc Canela
>>> jlcane...@gmail.com
>>>
>>
>>
>>
>> --
>> Jean-Luc Canela
>> jlcane...@gmail.com
>>
>>
>>
>
> >
>


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

+1 206.650.3740

http://biosimilarity.blogspot.com

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[Lift] Simple Link

[Makeable]

Is there a generator to create a simple non-stateful link, or should I
be manually creating the node?

Kind Regards,

Matt

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[Lift] Re: Difference between running from command line and from Eclipse

[Philippe Kirsanov]

yes, that what I did and workedthanks

On Tue, Jun 16, 2009 at 16:36, Jeppe Nejsum Madsen  wrote:

>
> On 16 Jun 2009, Philippe Kirsanov wrote:
>
> > Thank you for the reply, however I don't think this is the issue (I
> > tried and that didn't work).Seems like issue in which version of Jetty
> > is used.  Maven generates pom file with jetty version "[6.1.16,)" and
> > this works from command line, in Eclipse however it tries to use
> > version "7.0.0.pre5" (I see it in dependencies). Changing jetty to
> > version "7.0.0.pre5" in pom forces same error running from command
> > line.  The question is how to make maven plugin Eclipse use jetty v6
> > and not 7 pre5.
>
>
> Ahh sorry, didn't read the error message thoroughly :-) Why not just
> change jetty to 6.1.16? I went through the same steps some time ago. I'm
> not quite sure how I got the stuff info Eclipse, but my Eclipse project
> references jetty-6.1.6. Maybe something has changed in the lift plugin
> since then. This is from my pom:
>
> 
>  org.mortbay.jetty
>  jetty
>  [6.1.6]
>  test
> 
>
> /Jeppe
>
>
> >
>

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[Lift] Re: Difference between running from command line and from Eclipse

[Philippe Kirsanov]

Thank you
changing to version 6.1.17 worked, but interesting that jetty version that
is running is still 6.1.16 and Eclipse in editor still complains that there
is an error (class  missed)

[INFO] Starting jetty 6.1.16 ...
2009-06-16 16:31:35.173::INFO:  jetty-6.1.16




On Tue, Jun 16, 2009 at 16:23, David Bernard wrote:

> oups (old version) set the version to 6.1.17 or any 6.1.x and remove range
> version indicator [ and ,)
>
>
> On Tue, Jun 16, 2009 at 22:14, Philippe Kirsanov wrote:
>
>> Thank you for the reply, however I don't think this is the issue (I tried
>> and that didn't work). Seems like issue in which version of Jetty is
>> used.
>> Maven generates pom file with jetty version "[6.1.16,)" and this works
>> from command line, in Eclipse however it tries to use version "7.0.0.pre5"
>> (I see it in dependencies). Changing jetty to version "7.0.0.pre5" in pom
>> forces same error running from command line.
>> The question is how to make maven plugin Eclipse use jetty v6 and not 7
>> pre5.
>>
>>
>> On Tue, Jun 16, 2009 at 15:32, Jeppe Nejsum Madsen wrote:
>>
>>>
>>> On 16 Jun 2009, ph wrote:
>>>
>>>
>>> > I've created a test "hello-world" lift project and it runs fine.
>>> > http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp
>>> >
>>> > also I've imported this project to Eclipse (mvn eclipse:eclipse) and
>>> > import from Eclipse. I'm currently using m2eclipse (http://
>>> > m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
>>> > result:
>>> > error in src/test/scala/RunWebApp.scala
>>> > import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
>>> > is not in webapp
>>> >
>>> > project still runs from command line and fails in Eclipse
>>> >
>>> > I tried to create lift projects with maven in eclipse with same result
>>> > - that error
>>> >
>>> > I'm on Windows
>>>
>>> I had the same problems. IIRC, it's a problem with the build path source
>>> folders/multiple output folders generated by the mvn eclipse plugin.
>>>
>>> I fixed this by manually deleting the source folders in eclipse and then
>>> adding
>>>  src/main/scala
>>>  src/test/scala
>>>
>>> as source folders (using the default output folder)
>>>
>>> /Jeppe
>>>
>>>
>>>
>>>
>>
>>
>>
>
> >
>

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[Lift] Re: Firebug error message for AJAX

[Charles F. Munat]

I have the import statment and the LiftRules.jsArtifacts = YUIArtifacts
in Boot, but the script tag for the liftYUI.js script is not being 
inserted. I guess I could add it manually, but isn't Lift supposed to 
insert it?

Thanks!

Chas.

marius d. wrote:
> Also please see: http://wiki.liftweb.net/index.php/HowTo_use_Lift_with_YUI
> 
> Marius
> 
> On Jun 16, 11:58 pm, "marius d."  wrote:
>> You need one more
>>
>> 
>>
>> Br's,
>> Marius
>>
>> On Jun 16, 11:30 pm, "Charles F. Munat"  wrote:
>>
>>> I'm getting the following error in Firebug:
>>> YAHOO.lift is undefined
>>> url = YAHOO.lift.buildURI(addPageName('/...nSuccess(res);}, failure :
>>> onFailure });
>>> I have the following scripts:
>>> >> type="text/javascript">
>>> >> type="text/javascript">
>>> 
>>> >> type="text/javascript">
>>> 
>>> Any ideas?
>>> Chas.
> > 

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[Lift] Re: Firebug error message for AJAX

[marius d.]

Also please see: http://wiki.liftweb.net/index.php/HowTo_use_Lift_with_YUI

Marius

On Jun 16, 11:58 pm, "marius d."  wrote:
> You need one more
>
> 
>
> Br's,
> Marius
>
> On Jun 16, 11:30 pm, "Charles F. Munat"  wrote:
>
> > I'm getting the following error in Firebug:
>
> > YAHOO.lift is undefined
> > url = YAHOO.lift.buildURI(addPageName('/...nSuccess(res);}, failure :
> > onFailure });
>
> > I have the following scripts:
>
> >  > type="text/javascript">
> >  > type="text/javascript">
> > 
> >  > type="text/javascript">
> > 
>
> > Any ideas?
>
> > Chas.
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[Lift] Re: Firebug error message for AJAX

[marius d.]

You need one more



Br's,
Marius

On Jun 16, 11:30 pm, "Charles F. Munat"  wrote:
> I'm getting the following error in Firebug:
>
> YAHOO.lift is undefined
> url = YAHOO.lift.buildURI(addPageName('/...nSuccess(res);}, failure :
> onFailure });
>
> I have the following scripts:
>
>  type="text/javascript">
>  type="text/javascript">
> 
>  type="text/javascript">
> 
>
> Any ideas?
>
> Chas.
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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

[Derek Chen-Becker]

OK, I just checked in code that should allow this to work. Could you please
test and make sure that it's functioning correctly?

Thanks,

Derek

On 6/16/09, Derek Chen-Becker  wrote:
>
> Using multiple EMs was not something I had considered when I wrote this. I
> think that I can modify the code to provide a __nameSalt def to
> differentiate instances. Let me work on it and I'll have something soon.
>
> Derek
>
> On 6/16/09, Jean-Luc  wrote:
>>
>> For your information, here is an extract of source code of RequestVarEM :
>>
>> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>>object emVar extends RequestVar[EntityManager](openEM()) { ... }
>> }
>>
>> EntityManager is stored in the singleton emVar; so, all db access of Model
>> objects are made using the singleton emVar.
>> => trait RequestVarEM allow only one connection to a database within the
>> same HttpRequest context.
>>
>>
>> Jean-Luc
>>
>> 2009/6/15 Jean-Luc 
>>
>>>  Hello,
>>>
>>> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
>>> defined with RequestVarEM :
>>> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  // Motorbike
>>> database
>>> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  // Motorway
>>> database
>>>
>>> I thought one could access to any databases independently from any
>>> snippet as long as the correct Model object were used (ModelDb1 or ModelDb2
>>> for exemple) ; but when I access both databases from the same page, the
>>> second database access issues a "Named query not found" exception.
>>>
>>> I have two snippets, one to display a list of "motorbike", another to
>>> display a list of "motorway" :
>>> - page1 :
>>> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() =>
>>> ok
>>> - page2
>>> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() =>
>>> ok
>>> - page3 : calling from page 3 motorbike & motorway snippets : Named query
>>> not found: Motorway.findAll
>>> - page4 : calling from page 4 motorway & motorbike snippets : Named query
>>> not found: Motorbike.findAll
>>> - page3 & changing the query of *Motorway* snippet :
>>>   - 
>>> ModelDb2.createNamedQuery[*Motorbike*]("*Motorbike*.findAll).getResultList()
>>> => it's ok and I do NOT have an exception !
>>>
>>> I joined a sample application, ...
>>>
>>> any idea about this issue ?
>>> (bad use of LocalEMF in the application code ? issue with LocalEMF or
>>> RequestVarEM ?)
>>>
>>> Jean-Luc
>>>
>>> PS :
>>> I don't know if it's related but I have this in the log :
>>> [INFO] Checking for multiple versions of scala
>>> [WARNING] Multiple versions of scala libraries detected!
>>>
>>>
>>> --
>>> Jean-Luc Canela
>>> jlcane...@gmail.com
>>>
>>
>>
>>
>> --
>> Jean-Luc Canela
>> jlcane...@gmail.com
>>
>> >>
>>
>

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[Lift] Re: Difference between running from command line and from Eclipse

[Jeppe Nejsum Madsen]

On 16 Jun 2009, Philippe Kirsanov wrote:

> Thank you for the reply, however I don't think this is the issue (I
> tried and that didn't work).Seems like issue in which version of Jetty
> is used.  Maven generates pom file with jetty version "[6.1.16,)" and
> this works from command line, in Eclipse however it tries to use
> version "7.0.0.pre5" (I see it in dependencies). Changing jetty to
> version "7.0.0.pre5" in pom forces same error running from command
> line.  The question is how to make maven plugin Eclipse use jetty v6
> and not 7 pre5.


Ahh sorry, didn't read the error message thoroughly :-) Why not just
change jetty to 6.1.16? I went through the same steps some time ago. I'm
not quite sure how I got the stuff info Eclipse, but my Eclipse project
references jetty-6.1.6. Maybe something has changed in the lift plugin
since then. This is from my pom: 


  org.mortbay.jetty
  jetty
  [6.1.6]
  test


/Jeppe


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[Lift] Firebug error message for AJAX

[Charles F. Munat]

I'm getting the following error in Firebug:

YAHOO.lift is undefined
url = YAHOO.lift.buildURI(addPageName('/...nSuccess(res);}, failure : 
onFailure });

I have the following scripts:








Any ideas?

Chas.

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[Lift] Re: Difference between running from command line and from Eclipse

[David Bernard]

oups (old version) set the version to 6.1.17 or any 6.1.x and remove range
version indicator [ and ,)

On Tue, Jun 16, 2009 at 22:14, Philippe Kirsanov wrote:

> Thank you for the reply, however I don't think this is the issue (I tried
> and that didn't work).Seems like issue in which version of Jetty is used.
> Maven generates pom file with jetty version "[6.1.16,)" and this works from
> command line, in Eclipse however it tries to use version "7.0.0.pre5" (I see
> it in dependencies). Changing jetty to version "7.0.0.pre5" in pom forces
> same error running from command line.
> The question is how to make maven plugin Eclipse use jetty v6 and not 7
> pre5.
>
>
> On Tue, Jun 16, 2009 at 15:32, Jeppe Nejsum Madsen wrote:
>
>>
>> On 16 Jun 2009, ph wrote:
>>
>>
>> > I've created a test "hello-world" lift project and it runs fine.
>> > http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp
>> >
>> > also I've imported this project to Eclipse (mvn eclipse:eclipse) and
>> > import from Eclipse. I'm currently using m2eclipse (http://
>> > m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
>> > result:
>> > error in src/test/scala/RunWebApp.scala
>> > import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
>> > is not in webapp
>> >
>> > project still runs from command line and fails in Eclipse
>> >
>> > I tried to create lift projects with maven in eclipse with same result
>> > - that error
>> >
>> > I'm on Windows
>>
>> I had the same problems. IIRC, it's a problem with the build path source
>> folders/multiple output folders generated by the mvn eclipse plugin.
>>
>> I fixed this by manually deleting the source folders in eclipse and then
>> adding
>>  src/main/scala
>>  src/test/scala
>>
>> as source folders (using the default output folder)
>>
>> /Jeppe
>>
>>
>>
>>
>
> >
>

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[Lift] Re: Difference between running from command line and from Eclipse

[David Bernard]

The problem is a mismatch in the version of Jetty used by Eclipse (7+) and
the code RunWebApp use WebAppContext that was remove from jetty 7+.
If you don't plan to run the site as test under eclipse by "Run As" on
RunWebApp,
  then remove the RunWebApp source
  else change the version of jetty from [6.1.6,) to  6.1.9

/davidB

On Tue, Jun 16, 2009 at 21:32, Jeppe Nejsum Madsen  wrote:

>
> On 16 Jun 2009, ph wrote:
>
>
> > I've created a test "hello-world" lift project and it runs fine.
> > http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp
> >
> > also I've imported this project to Eclipse (mvn eclipse:eclipse) and
> > import from Eclipse. I'm currently using m2eclipse (http://
> > m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
> > result:
> > error in src/test/scala/RunWebApp.scala
> > import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
> > is not in webapp
> >
> > project still runs from command line and fails in Eclipse
> >
> > I tried to create lift projects with maven in eclipse with same result
> > - that error
> >
> > I'm on Windows
>
> I had the same problems. IIRC, it's a problem with the build path source
> folders/multiple output folders generated by the mvn eclipse plugin.
>
> I fixed this by manually deleting the source folders in eclipse and then
> adding
>  src/main/scala
>  src/test/scala
>
> as source folders (using the default output folder)
>
> /Jeppe
>
>
> >
>

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[Lift] Re: Difference between running from command line and from Eclipse

[Philippe Kirsanov]

Thank you for the reply, however I don't think this is the issue (I tried
and that didn't work).Seems like issue in which version of Jetty is used.
Maven generates pom file with jetty version "[6.1.16,)" and this works from
command line, in Eclipse however it tries to use version "7.0.0.pre5" (I see
it in dependencies). Changing jetty to version "7.0.0.pre5" in pom forces
same error running from command line.
The question is how to make maven plugin Eclipse use jetty v6 and not 7
pre5.


On Tue, Jun 16, 2009 at 15:32, Jeppe Nejsum Madsen  wrote:

>
> On 16 Jun 2009, ph wrote:
>
>
> > I've created a test "hello-world" lift project and it runs fine.
> > http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp
> >
> > also I've imported this project to Eclipse (mvn eclipse:eclipse) and
> > import from Eclipse. I'm currently using m2eclipse (http://
> > m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
> > result:
> > error in src/test/scala/RunWebApp.scala
> > import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
> > is not in webapp
> >
> > project still runs from command line and fails in Eclipse
> >
> > I tried to create lift projects with maven in eclipse with same result
> > - that error
> >
> > I'm on Windows
>
> I had the same problems. IIRC, it's a problem with the build path source
> folders/multiple output folders generated by the mvn eclipse plugin.
>
> I fixed this by manually deleting the source folders in eclipse and then
> adding
>  src/main/scala
>  src/test/scala
>
> as source folders (using the default output folder)
>
> /Jeppe
>
>
> >
>

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[Lift] Re: Difference between running from command line and from Eclipse

[Jeppe Nejsum Madsen]

On 16 Jun 2009, ph wrote:


> I've created a test "hello-world" lift project and it runs fine.
> http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp
> 
> also I've imported this project to Eclipse (mvn eclipse:eclipse) and
> import from Eclipse. I'm currently using m2eclipse (http://
> m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
> result:
> error in src/test/scala/RunWebApp.scala
> import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
> is not in webapp
> 
> project still runs from command line and fails in Eclipse
> 
> I tried to create lift projects with maven in eclipse with same result
> - that error
> 
> I'm on Windows

I had the same problems. IIRC, it's a problem with the build path source
folders/multiple output folders generated by the mvn eclipse plugin. 

I fixed this by manually deleting the source folders in eclipse and then
adding
  src/main/scala
  src/test/scala

as source folders (using the default output folder)

/Jeppe
  

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[Lift] Re: Getting Started Issue

[David Pollak]

Thanks for answering your own question. :-)

On Mon, Jun 15, 2009 at 3:13 PM, Chris Lamey  wrote:

>
> FYI - I had to specify the full name to get it to work:
>
> ./apache-maven-2.0.10/bin/mvn -e org.apache.maven.plugins:maven-
> archetype-plugin:2.0-alpha-4:generate -U -
> DarchetypeGroupId=net.liftweb -DarchetypeArtifactId=lift-archetype-
> blank -DarchetypeVersion=1.0 -DremoteRepositories=http://scala-
> tools.org/repo-releases -DgroupId=demo.helloworld -
> DartifactId=helloworld -Dversion=1.0-SNAPSHOT
>
> Thanks,
> Chris
>
> On Jun 15, 3:30 pm, Chris Lamey  wrote:
> > Heya,
> >
> > I'm on Mac OS X 10.5 using Java 1.6.0_07 and Maven 2.0.10.
> >
> > I'm following the Getting Started guide here:
> >
> >http://liftweb.net/docs/getting_started/mod_master.html
> >
> > And am running into a maven issue with the first application:
> >
> > clameylt:~/tmp/lift > ./apache-maven-2.0.10/bin/mvn -e
> > archetype:generate -U -DarchetypeGroupId=net.liftweb -
> > DarchetypeArtifactId=lift-archetype-blank -DarchetypeVersion=1.0 -
> > DremoteRepositories=http://scala-tools.org/repo-releases-
> > DgroupId=demo.helloworld -DartifactId=helloworld -Dversion=1.0-
> > SNAPSHOT
> > + Error stacktraces are turned on.
> > [INFO] Scanning for projects...
> > [INFO] Searching repository for plugin with prefix: 'archetype'.
> > [INFO] org.apache.maven.plugins: checking for updates from lm
> > [INFO] org.apache.maven.plugins: checking for updates from central
> > [INFO] org.codehaus.mojo: checking for updates from lm
> > [INFO] org.codehaus.mojo: checking for updates from central
> > [INFO] artifact org.apache.maven.plugins:maven-archetype-plugin:
> > checking for updates from lm
> > [INFO] artifact org.apache.maven.plugins:maven-archetype-plugin:
> > checking for updates from central
> > [INFO]
> > 
> > [ERROR] BUILD FAILURE
> > [INFO]
> > 
> > [INFO] Required goal not found: archetype:generate in
> > org.apache.maven.plugins:maven-archetype-plugin:1.0-alpha-4
> > [INFO]
> > 
> > [INFO] Trace
> > org.apache.maven.BuildFailureException: Required goal not found:
> > archetype:generate in org.apache.maven.plugins:maven-archetype-plugin:
> > 1.0-alpha-4
> > at
> > org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor
> > (DefaultLifecycleExecutor.java:1559)
> > at
> >
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds
> > (DefaultLifecycleExecutor.java:406)
> > at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute
> > (DefaultLifecycleExecutor.java:137)
> > at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:
> > 336)
> > at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:
> > 129)
> > at org.apache.maven.cli.MavenCli.main(MavenCli.java:301)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke
> > (NativeMethodAccessorImpl.java:39)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke
> > (DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at org.codehaus.classworlds.Launcher.launchEnhanced
> > (Launcher.java:315)
> > at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
> > at org.codehaus.classworlds.Launcher.mainWithExitCode
> > (Launcher.java:430)
> > at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> > [INFO]
> > 
> > [INFO] Total time: 1 second
> > [INFO] Finished at: Mon Jun 15 15:25:18 MDT 2009
> > [INFO] Final Memory: 1M/4M
> > [INFO]
> > 
> >
> > The doc says Maven 2.0.9 or greater, has anyone run this with 2.0.10?
> >
> > Thanks,
> > Chris
>
> >
>


-- 
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
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[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database

[Derek Chen-Becker]

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

Derek

On 6/16/09, Jean-Luc  wrote:
>
> For your information, here is an extract of source code of RequestVarEM :
>
> Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
>object emVar extends RequestVar[EntityManager](openEM()) { ... }
> }
>
> EntityManager is stored in the singleton emVar; so, all db access of Model
> objects are made using the singleton emVar.
> => trait RequestVarEM allow only one connection to a database within the
> same HttpRequest context.
>
>
> Jean-Luc
>
> 2009/6/15 Jean-Luc 
>
>>  Hello,
>>
>> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
>> defined with RequestVarEM :
>> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  // Motorbike
>> database
>> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  // Motorway
>> database
>>
>> I thought one could access to any databases independently from any snippet
>> as long as the correct Model object were used (ModelDb1 or ModelDb2 for
>> exemple) ; but when I access both databases from the same page, the second
>> database access issues a "Named query not found" exception.
>>
>> I have two snippets, one to display a list of "motorbike", another to
>> display a list of "motorway" :
>> - page1 :
>> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() =>
>> ok
>> - page2
>> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() =>
>> ok
>> - page3 : calling from page 3 motorbike & motorway snippets : Named query
>> not found: Motorway.findAll
>> - page4 : calling from page 4 motorway & motorbike snippets : Named query
>> not found: Motorbike.findAll
>> - page3 & changing the query of *Motorway* snippet :
>>   - 
>> ModelDb2.createNamedQuery[*Motorbike*]("*Motorbike*.findAll).getResultList()
>> => it's ok and I do NOT have an exception !
>>
>> I joined a sample application, ...
>>
>> any idea about this issue ?
>> (bad use of LocalEMF in the application code ? issue with LocalEMF or
>> RequestVarEM ?)
>>
>> Jean-Luc
>>
>> PS :
>> I don't know if it's related but I have this in the log :
>> [INFO] Checking for multiple versions of scala
>> [WARNING] Multiple versions of scala libraries detected!
>>
>>
>> --
>> Jean-Luc Canela
>> jlcane...@gmail.com
>>
>
>
>
> --
> Jean-Luc Canela
> jlcane...@gmail.com
>
> >
>

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[Lift] Re: Develop / Production System

[David Pollak]

On Tue, Jun 16, 2009 at 6:43 AM, Oliver Lambert  wrote:

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

I typically do an rm -rf ~/.m2 once every few weeks... the maven repo gets
rebuilt and life goes in... but that's just me.


>
> On Tue, Jun 16, 2009 at 7:25 PM, Tobias Daub  wrote:
>
>>
>> Ok, thanks.
>>
>> Well, with the pom.xml file it was a little bit strange. I had to change
>> the Lift version to do the mvn clean install and then change it back.
>> I've no idea why, but it was the only things that helped.
>>
>>
>> > Maven stores project dependencies in a repository (by default, its
>> > called .m2). When you move a Lift application from one system to
>> > another, the repository on the new system may need to be updated,
>> > hence your requirement to do a "mvn clean install".
>> >
>> > Don't know what you changed on the pom.xml (if you have any hard coded
>> > paths, you might have to change them).
>> >
>> > On Tue, Jun 16, 2009 at 2:41 AM, Tobias Daub > > > wrote:
>> >
>> >
>> > Hi There,
>> >
>> > I would like to know whats the best way to move an existing Lift
>> > installation from one system to another. I ask this, because I had
>> > some
>> > problems after I just copied the whole directory (I had to edit the
>> > pom.xml file and do "mvn clean install").
>> >
>> >
>> > thanks
>> >
>> >
>> >
>> >
>> > >
>>
>>
>>
>>
>
> >
>


-- 
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
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[Lift] article proposal : "How to code a multi-criteria search form using Hibernate Criteria API"

[Jean-Luc]

Hello,

I propose to write an article about "How to code a multi-criteria search
form using Hibernate Criteria API".

Before starting, I'd like to check :
- if no such article is being written ...
- if someone is interested by the subject

Jean-Luc

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

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[Lift] Difference between running from command line and from Eclipse

[ph]

I've created a test "hello-world" lift project and it runs fine.
http://wiki.liftweb.net/index.php/HowTo_start_a_new_liftwebapp

also I've imported this project to Eclipse (mvn eclipse:eclipse) and
import from Eclipse. I'm currently using m2eclipse (http://
m2eclipse.codehaus.org/), but before I tried Eclipse IAM with same
result:
error in src/test/scala/RunWebApp.scala
import _root_.org.mortbay.jetty.webapp.WebAppContext => WebAppContext
is not in webapp

project still runs from command line and fails in Eclipse

I tried to create lift projects with maven in eclipse with same result
- that error

I'm on Windows


What is the difference beween running from command line and Eclipse
and is there a way to fix it?

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[Lift] Re: Lift Jquery autocomplete *** API CHANGE CANDIDATE ***

[David Pollak]

How about vmware and Linux as your dev platform?  Just askin'

On Tue, Jun 16, 2009 at 12:16 AM, marius d.  wrote:

>
> two things:
>
> 1. Hate msysgit
> 2. Thanks to Jorge for his help in committing the file
>
>
> Marius
>
> On Jun 16, 9:41 am, "marius d."  wrote:
> > yes yes yes ... entirely my bad as I missed that out ...
> >
> > I'll correct it very soon.
> >
> > Marius
> >
> > On Jun 16, 3:07 am, "Bryan."  wrote:
> >
> > > Hi Marius,
> >
> > > I just updated to the tip and got a build failure:
> >
> > > [WARNING] /home/bryan/public-repos/git/liftweb/sites/example/src/main/
> > > scala/net/liftweb/example/snippet/Ajax.scala:65: error: value
> > > autocomplete is not a member of object net.liftweb.http.jquery.JqSHtml
> > > [WARNING]  "auto" -> JqSHtml.autocomplete("", buildQuery _, _
> > > => ()))
> >
> > > --Bryan
> >
> > > On Jun 15, 2:16 pm, "marius d."  wrote:
> >
> > > > Folks,
> >
> > > > I just made the autocomplete a Lift widget so it does not exist
> > > > anymore in JqShtml object. Here is an example on how to use it:
> >
> > > > - For Ajax autocomplete
> > > > AutoComplete("", (current, limit) => {
> > > >   println("current = " + current)
> > > >   (1 to limit).map(v => "Value_" + v)
> > > > }, s => println("submit " + s))
> >
> > > > - For pre-provided options list
> > > >AutoComplete.autocompleteObj(/*same params as bfore*/)
> >
> > > > This may break your app but I think it is very easy to update it.
> >
> > > > I also fixed some bugs:
> > > > 1. It didn;t work if the container cookies were turned off
> > > > 2. hovering on the options list did not work on Ubuntu FF3 at least
> > > > due to a capitalizated LI equality test.
> >
> > > > If you encounter any problems, please let me know.
> >
> > > > Br's,
> > > > Marius
> >
> > > > On Jun 8, 12:34 pm, Kevin Wright 
> > > > wrote:
> >
> > > > > +1
> >
> > > > > As an evolving framework, it definitely makes more sense to favour
> > > > > consistency over backward compatibility at this stage
> >
> > > > > On Mon, Jun 8, 2009 at 9:00 AM, marius d. 
> wrote:
> >
> > > > > > Other folks, please speak up ! :) ... I will soon migrate this
> into a
> > > > > > Lift widget.
> >
> > > > > > Br's,
> > > > > > Marius
> >
> > > > > > On Jun 6, 4:53 pm, David Pollak 
> wrote:
> > > > > > > I think I'm using in one place in one project so my api
> breakage factor
> > > > > > is
> > > > > > > low.  I'm okay with moving it unless someone else is going to
> feel real
> > > > > > > pain.
> >
> > > > > > > On Jun 6, 2009 12:24 AM, "Marius" 
> wrote:
> >
> > > > > > > Is there a reason why the JQuery autocomplete is not a Lift
> widget but
> > > > > > > instead it lives in http/jquery package? .. I remember a long
> time ago
> > > > > > > me putting it in the jquery package to separate SHtml stuff
> that is
> > > > > > > dependent on JQuery to the others.
> >
> > > > > > > Thoughts?
> >
> > > > > > > Br',
> > > > > > > Marius
> >
>


-- 
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Beginning Scala http://www.apress.com/book/view/1430219890
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[Lift] Re: Lift Jquery autocomplete *** API CHANGE CANDIDATE ***

[Derek Chen-Becker]

Whenever I see "msys" I hear "emesis" in my head. Emesis is the medical term
for vomiting.

On 6/16/09, marius d.  wrote:
>
>
> two things:
>
> 1. Hate msysgit
> 2. Thanks to Jorge for his help in committing the file
>
>
>
> Marius
>
>
> On Jun 16, 9:41 am, "marius d."  wrote:
> > yes yes yes ... entirely my bad as I missed that out ...
> >
> > I'll correct it very soon.
> >
> > Marius
> >
> > On Jun 16, 3:07 am, "Bryan."  wrote:
> >
> > > Hi Marius,
> >
> > > I just updated to the tip and got a build failure:
> >
> > > [WARNING] /home/bryan/public-repos/git/liftweb/sites/example/src/main/
> > > scala/net/liftweb/example/snippet/Ajax.scala:65: error: value
> > > autocomplete is not a member of object net.liftweb.http.jquery.JqSHtml
> > > [WARNING]  "auto" -> JqSHtml.autocomplete("", buildQuery _, _
> > > => ()))
> >
> > > --Bryan
> >
> > > On Jun 15, 2:16 pm, "marius d."  wrote:
> >
> > > > Folks,
> >
> > > > I just made the autocomplete a Lift widget so it does not exist
> > > > anymore in JqShtml object. Here is an example on how to use it:
> >
> > > > - For Ajax autocomplete
> > > > AutoComplete("", (current, limit) => {
> > > >   println("current = " + current)
> > > >   (1 to limit).map(v => "Value_" + v)
> > > > }, s => println("submit " + s))
> >
> > > > - For pre-provided options list
> > > >AutoComplete.autocompleteObj(/*same params as bfore*/)
> >
> > > > This may break your app but I think it is very easy to update it.
> >
> > > > I also fixed some bugs:
> > > > 1. It didn;t work if the container cookies were turned off
> > > > 2. hovering on the options list did not work on Ubuntu FF3 at least
> > > > due to a capitalizated LI equality test.
> >
> > > > If you encounter any problems, please let me know.
> >
> > > > Br's,
> > > > Marius
> >
> > > > On Jun 8, 12:34 pm, Kevin Wright 
> > > > wrote:
> >
> > > > > +1
> >
> > > > > As an evolving framework, it definitely makes more sense to favour
> > > > > consistency over backward compatibility at this stage
> >
> > > > > On Mon, Jun 8, 2009 at 9:00 AM, marius d. 
> wrote:
> >
> > > > > > Other folks, please speak up ! :) ... I will soon migrate this
> into a
> > > > > > Lift widget.
> >
> > > > > > Br's,
> > > > > > Marius
> >
> > > > > > On Jun 6, 4:53 pm, David Pollak 
> wrote:
> > > > > > > I think I'm using in one place in one project so my api
> breakage factor
> > > > > > is
> > > > > > > low.  I'm okay with moving it unless someone else is going to
> feel real
> > > > > > > pain.
> >
> > > > > > > On Jun 6, 2009 12:24 AM, "Marius" 
> wrote:
> >
> > > > > > > Is there a reason why the JQuery autocomplete is not a Lift
> widget but
> > > > > > > instead it lives in http/jquery package? .. I remember a long
> time ago
> > > > > > > me putting it in the jquery package to separate SHtml stuff
> that is
> > > > > > > dependent on JQuery to the others.
> >
> > > > > > > Thoughts?
> >
> > > > > > > Br',
> > > > > > > Marius
> >
>

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[Lift] Re: sample code for using JDO on GAE/J

[David Pollak]

Excellent!

On Tue, Jun 16, 2009 at 7:42 AM, Atsuhiko Yamanaka <
atsuhiko.yaman...@gmail.com> wrote:

>
> Hi there,
>
> I have pushed a sample code for using JDO on GAE/J to github.
> It has been named as lift-gae-jdo and located at
>  http://github.com/ymnk/lift-gae-jdo/tree/master
>
> The latest version of Its README is available at
>
> http://github.com/ymnk/lift-gae-jdo/blob/ac06f6460bda5013acc2dc07fd65491a2be65dc0/README
>
> Enjoy!
>
>
> Sincerely,
> --
> Atsuhiko Yamanaka
> JCraft,Inc.
> 1-14-20 HONCHO AOBA-KU,
> SENDAI, MIYAGI 980-0014 Japan.
> Tel +81-22-723-2150
>+1-415-578-3454
> Skype callto://jcraft/
>
> >
>


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

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[Lift] Re: Redirect after login

[Alexander Azarov]

David, Glenn,

Many thanks to the thread, I realized how to redirect a user the page
he/she was going to load after his/her logon. In this case, I believe
it's better to re-implement usual IfLoggedIn (instead of overriding
User.login):

lazy val IfLoggedIn = If(User.loggedIn_? _, loginAndComeBack _)

def loginAndComeBack = {
  val uri = S.uri
  RedirectWithState(loginUri, RedirectState( () => User.loginReferer
(uri), ?("notlogged") -> NoticeType.Notice ) )
}

lazy val loginUri = SiteMap.findLoc("Login").map{ _.link.uriList }.
  openOr(LiftRules.siteMapFailRedirectLocation).mkString("/", "/", "")

Alexander

On 19 май, 02:57, David Pollak  wrote:
> Glenn,
>
> Sorry... my mistake... the following code works:
>
>   object loginReferer extends SessionVar("/")
>
>   override def homePage = {
>     var ret = loginReferer.*is*
>     loginReferer.remove()
>     ret
>   }
>
>   override def login = {
>     for (r <- S.referer if loginReferer.is == "/") loginReferer.set(r)
>     super.login
>   }
>
> Note the "is" which extracts the contents from the SessionVar before it's
> reset.
>
> On Sun, May 17, 2009 at 10:30 AM, glenn  wrote:
>
> > David,
>
> > I was a little puzzled by the line, in the override of def homePage,
> > of loginReferer.remove(). This actually resets the homePage to "/".
> > Removing the line has the intended result. But, then I need a way
> > to reset the loginReferer session variable.
>
> Yeah... the reset happened before the old value was removed from the
> SessionVar.  The above code fixes the problem.
>
>
>
> > Better still, it would be nice to be able to create additional
> > stateful
> > parameter maps, something like Seam's conversation state, which
> > would make creation of wizards a breeze.
>
> There's some of that we StatefulSnippets... seehttp://demo.liftweb.net/arc
>
> I'm hoping that we'll get full wizard support in Lift for 1.1 
> (seehttps://www.lostlake.org/wizard.wmvexcept using a DSL like SiteMap rather
> than XML).
>
>
>
> > This brings up another point. The only way I trust to trace the code
> > to determine what's going on is the old-fashioned way, of putting in
> > a bunch of println statements in my code. With lift's flow back-and-
> > forth
> > between templates, which are really client-side, and snippets, which
> > are on the server, normal java debugging tools just doesn't work.
>
> That's strange.  There's nothing rendered to the client until all the
> template stuff is fully rendered (the templates are processed by the server
> and the snippets are invoked as the  tags are encountered during
> the first re-write phase of template process.)
>
> People have had success setting breakpoints in Eclipse, NetBeans and
> IntelliJ in Lift apps.  I use println personally.
>
> Thanks,
>
> David
>
>
>
>
>
> > This makes developing a slow process and can even offset the gains
> > lift brings to coding efficiency.
>
> > What do you, and other's use for debugging that might help.
>
> > Thanks in advance for your assistance.
>
> > Glenn...
>
> > On May 15, 3:35 pm, David Pollak 
> > wrote:
> > > In your User object, do the following:
>
> > > object loginReferer extends SessionVar("/")
>
> > > override def homePage = {
> > >   var ret = loginReferer
> > >   loginReferer.remove()
> > >   ret
>
> > > }
>
> > > override def login = {
> > >   for (r <- S.referer if loginReferer.is == "/") loginReferer.set(r)
> > >   super.login
>
> > > }
>
> > > So, we're setting up a session variable the keeps track of the referer to
> > > the login page.
>
> > > We define the homePage method to return this page, but reset after use.
>
> > > And we override the login method to record the referer.
>
> > > On Fri, May 15, 2009 at 3:11 PM, glenn  wrote:
>
> > > > I'm using ProtoUser. But even so, I thought that I might have to
> > > > create a
> > > > bunch of separate login pages, each using the loginXhtml form so that
> > > > action={S.uri} would generate the links to match with the cases. In
> > > > that
> > > > way I could do the redirection. But that seems convoluted, to me.
>
> > > > This goes back to using EarlyAccess on a menu item, redirecting to the
> > > > appropriate
> > > > login page, and then once the user logs in, he is immediately taken to
> > > > a new page
> > > > rather than back to "/index". Really, what I'm trying to do is create
> > > > a wizard widget
> > > > or sorts, to perform a sequence of tasks with a finish button on the
> > > > last page.
>
> > > > Glenn...
>
> > > > On May 15, 2:43 pm, David Pollak 
> > > > wrote:
> > > > > On your login page, you can capture the referer and then redirect to
> > the
> > > > > refering page on successful login.
>
> > > > > Are you using ProtoUser or are you rolling your own login page?
>
> > > > > On Fri, May 15, 2009 at 1:27 PM, glenn  wrote:
>
> > > > > > If I wanted to redirect the user to a different page, depending on
> > > > > > what page they were on when they initiated a login,
> > > > > > does anyone know of a good solution?
>
> > > 

[Lift] Re: links, menu items and mega user

[Derek Chen-Becker]

There are two ways to handle simple links:

   1. If you want some function to be executed when the link is clicked, use
   SHtml.link from a snippet or view: SHtml.link("page2", () => ..., Text("Some
   Link"))
   2. If you just want a link, just use plain XHTML: Some
   Link.

Note that in either case we leave the suffix off of the target page. This is
because Lift will try a variety of suffixes to match language and file type
automatically.

Derek

On Mon, Jun 15, 2009 at 6:10 AM, mr revuza  wrote:

>
> Just getting started previewing Lift. It looks cool. The demos looks
> cool as does the todo sample.
>
> One thing I do not see is an example of doing a simple link to another
> page (ie. from page1.html adding an  tag to page2.html). Is there
> an appropriate  incantation to link to another page that is
> not registered as a menu item? Is there some other place in the
> bootstrap where pages would be listed? Or is it appropriate add the
> full path to page2.html from within page1.html and be done?
>
> Also, is there an example available of hiding menu items for users
> that are not logged in? For example, if I wanted to add an "Add Todo"
> and "View Todo" item to the menu only once the user has logged in.
>
> Finally, is there an example available of overriding some of the
> behavior of the MetaMegaProtoUser? For example if I did not want to
> have a timezone or locale column, or perhaps at the least not exposing
> those through the sign up page?
>
> Thank you for you insights
>
> >
>

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

[Jean-Luc]

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

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

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


Jean-Luc

2009/6/15 Jean-Luc 

> Hello,
>
> I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
> defined with RequestVarEM :
> - object ModelDb1 extends LocalEMF("db1") with RequestVarEM  // Motorbike
> database
> - object ModelDb2 extends LocalEMF("db2") with RequestVarEM  // Motorway
> database
>
> I thought one could access to any databases independently from any snippet
> as long as the correct Model object were used (ModelDb1 or ModelDb2 for
> exemple) ; but when I access both databases from the same page, the second
> database access issues a "Named query not found" exception.
>
> I have two snippets, one to display a list of "motorbike", another to
> display a list of "motorway" :
> - page1 :
> ModelDb1.createNamedQuery[Motorbike]("Motorbike.findAll).getResultList() =>
> ok
> - page2
> : ModelDb2.createNamedQuery[Motorway]("Motorway.findAll).getResultList() =>
> ok
> - page3 : calling from page 3 motorbike & motorway snippets : Named query
> not found: Motorway.findAll
> - page4 : calling from page 4 motorway & motorbike snippets : Named query
> not found: Motorbike.findAll
> - page3 & changing the query of *Motorway* snippet :
>   - 
> ModelDb2.createNamedQuery[*Motorbike*]("*Motorbike*.findAll).getResultList()
> => it's ok and I do NOT have an exception !
>
> I joined a sample application, ...
>
> any idea about this issue ?
> (bad use of LocalEMF in the application code ? issue with LocalEMF or
> RequestVarEM ?)
>
> Jean-Luc
>
> PS :
> I don't know if it's related but I have this in the log :
> [INFO] Checking for multiple versions of scala
> [WARNING] Multiple versions of scala libraries detected!
>
>
> --
> Jean-Luc Canela
> jlcane...@gmail.com
>



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

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[Lift] Re: file upload

[DavidV]

yes, that's what I was looking for.  thanks!

On Jun 16, 11:11 am, TylerWeir  wrote:
> Take a look 
> at:http://github.com/dpp/liftweb/blob/dcc7b064a42832b06e4523d1a35351967d...
>
> It should cast some light on your issue.
>
> On Jun 16, 9:54 am, DavidV  wrote:
>
> > I'm still stuck on this problem.
> > Just bringing it to the top of the list again so it's not forgotten...
>
> > On Jun 15, 4:04 pm, DavidV  wrote:
>
> > > I was able to find the code and have a program ready to parse the
> > > files as soon as I can upload them.  I tried writing my own version of
> > > the code found 
> > > here:http://github.com/dpp/liftweb/blob/dcc7b064a42832b06e4523d1a35351967d...
> > > but I got the following error when I tried to load the page on my
> > > browser:
>
> > > XML Parsing Error: prefix not bound to a namespace
> > > Location:http://localhost:8080/analysis/inprocess
> > > Line Number 78, Column 1:
> > > 
> > > ^
>
> > > I am not sure what "choose" is or where to find it and am having
> > > trouble finding documentation online.  I am still working with
> > > Lift-1.0, could this be the problem?
>
> > > Thanks,
> > > David
>
> > > On Jun 12, 6:35 am, wapgui  wrote:
>
> > > > I do similar things.
>
> > > > First there is a snippet using the bind functionality.
> > > > var image : FileParamHolder = _
>
> > > > bind("widget", xhtml,
> > > >   "image" -> fileUpload(image = _)
>
> > > > }
>
> > > > Now write out:
>
> > > > val wbos : ByteArrayOutputStream = build(image)
> > > > val fout = new File(outputFilename)
> > > > if (fout.exists()) {
> > > >    Log.error("Tried to overwrite existing file")
> > > >    return "Error: Filename already exists"}
>
> > > > val foStream = new FileOutputStream(fout)
> > > > foStream.write(wbos.toByteArray())
> > > > foStream.close()
>
> > > > def build(image : FileParamHolder) : ByteArrayOutputStream = {
> > > >   val bout = new ByteArrayOutputStream()
> > > >   val zipout : ZipOutputStream = new ZipOutputStream(bout)
> > > >   zipout.setMethod(ZipOutputStream.DEFLATED);
> > > >   zipout.setLevel(Deflater.DEFAULT_COMPRESSION);
>
> > > >   writeImage(zos, image)
>
> > > > }
>
> > > > private def writeImage(zos: ZipOutputStream,
> > > > image:FileParamHolder):Unit = {
> > > >     if (image.fileName == "") {
> > > >       Log.info("Provided image file is null")
> > > >       return
> > > >     }
> > > >     if (image.fileName.lastIndexOf("\\") != -1) //this is needed if
> > > > upload is from a windows system
> > > >       zos.putNextEntry(new ZipEntry("res/" + image.fileName.substring
> > > > (image.fileName.lastIndexOf("\\")+1)))
> > > >     else
> > > >       zos.putNextEntry(new ZipEntry("res/" + image.fileName))
> > > >     zos.write(image.file, 0, image.file.length) //make here a loop on
> > > > very large files
> > > >     zos.closeEntry()
>
> > > > }
>
> > > > Cheers
> > > > Torsten
>
> > > > On Jun 11, 10:24 pm, DavidV  wrote:
>
> > > > > I would like to upload a .csv file onto the web server so I can then
> > > > > parse it in my webapp, and put certain fields into my database.  I
> > > > > would like a "Browse..." button, much like the one shown on this Lift
> > > > > example page:http://demo.liftweb.net/file_upload
> > > > > Can anyone point me in the right direction as to how to get started
> > > > > doing this, or tell me where I can find the example code for the link
> > > > > I provided?  I can't seem to locate it in liftweb in github
> > > > > thanks,
> > > > > David

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[Lift] Re: file upload

[TylerWeir]

Take a look at:
http://github.com/dpp/liftweb/blob/dcc7b064a42832b06e4523d1a35351967d7a46b2/sites/example/src/main/scala/net/liftweb/example/snippet/Misc.scala#L119

It should cast some light on your issue.

On Jun 16, 9:54 am, DavidV  wrote:
> I'm still stuck on this problem.
> Just bringing it to the top of the list again so it's not forgotten...
>
> On Jun 15, 4:04 pm, DavidV  wrote:
>
> > I was able to find the code and have a program ready to parse the
> > files as soon as I can upload them.  I tried writing my own version of
> > the code found 
> > here:http://github.com/dpp/liftweb/blob/dcc7b064a42832b06e4523d1a35351967d...
> > but I got the following error when I tried to load the page on my
> > browser:
>
> > XML Parsing Error: prefix not bound to a namespace
> > Location:http://localhost:8080/analysis/inprocess
> > Line Number 78, Column 1:
> > 
> > ^
>
> > I am not sure what "choose" is or where to find it and am having
> > trouble finding documentation online.  I am still working with
> > Lift-1.0, could this be the problem?
>
> > Thanks,
> > David
>
> > On Jun 12, 6:35 am, wapgui  wrote:
>
> > > I do similar things.
>
> > > First there is a snippet using the bind functionality.
> > > var image : FileParamHolder = _
>
> > > bind("widget", xhtml,
> > >   "image" -> fileUpload(image = _)
>
> > > }
>
> > > Now write out:
>
> > > val wbos : ByteArrayOutputStream = build(image)
> > > val fout = new File(outputFilename)
> > > if (fout.exists()) {
> > >    Log.error("Tried to overwrite existing file")
> > >    return "Error: Filename already exists"}
>
> > > val foStream = new FileOutputStream(fout)
> > > foStream.write(wbos.toByteArray())
> > > foStream.close()
>
> > > def build(image : FileParamHolder) : ByteArrayOutputStream = {
> > >   val bout = new ByteArrayOutputStream()
> > >   val zipout : ZipOutputStream = new ZipOutputStream(bout)
> > >   zipout.setMethod(ZipOutputStream.DEFLATED);
> > >   zipout.setLevel(Deflater.DEFAULT_COMPRESSION);
>
> > >   writeImage(zos, image)
>
> > > }
>
> > > private def writeImage(zos: ZipOutputStream,
> > > image:FileParamHolder):Unit = {
> > >     if (image.fileName == "") {
> > >       Log.info("Provided image file is null")
> > >       return
> > >     }
> > >     if (image.fileName.lastIndexOf("\\") != -1) //this is needed if
> > > upload is from a windows system
> > >       zos.putNextEntry(new ZipEntry("res/" + image.fileName.substring
> > > (image.fileName.lastIndexOf("\\")+1)))
> > >     else
> > >       zos.putNextEntry(new ZipEntry("res/" + image.fileName))
> > >     zos.write(image.file, 0, image.file.length) //make here a loop on
> > > very large files
> > >     zos.closeEntry()
>
> > > }
>
> > > Cheers
> > > Torsten
>
> > > On Jun 11, 10:24 pm, DavidV  wrote:
>
> > > > I would like to upload a .csv file onto the web server so I can then
> > > > parse it in my webapp, and put certain fields into my database.  I
> > > > would like a "Browse..." button, much like the one shown on this Lift
> > > > example page:http://demo.liftweb.net/file_upload
> > > > Can anyone point me in the right direction as to how to get started
> > > > doing this, or tell me where I can find the example code for the link
> > > > I provided?  I can't seem to locate it in liftweb in github
> > > > thanks,
> > > > David
>
>
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[Lift] sample code for using JDO on GAE/J

[Atsuhiko Yamanaka]

Hi there,

I have pushed a sample code for using JDO on GAE/J to github.
It has been named as lift-gae-jdo and located at
  http://github.com/ymnk/lift-gae-jdo/tree/master

The latest version of Its README is available at
  
http://github.com/ymnk/lift-gae-jdo/blob/ac06f6460bda5013acc2dc07fd65491a2be65dc0/README

Enjoy!


Sincerely,
--
Atsuhiko Yamanaka
JCraft,Inc.
1-14-20 HONCHO AOBA-KU,
SENDAI, MIYAGI 980-0014 Japan.
Tel +81-22-723-2150
+1-415-578-3454
Skype callto://jcraft/

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[Lift] Re: file upload

[DavidV]

I'm still stuck on this problem.
Just bringing it to the top of the list again so it's not forgotten...

On Jun 15, 4:04 pm, DavidV  wrote:
> I was able to find the code and have a program ready to parse the
> files as soon as I can upload them.  I tried writing my own version of
> the code found 
> here:http://github.com/dpp/liftweb/blob/dcc7b064a42832b06e4523d1a35351967d...
> but I got the following error when I tried to load the page on my
> browser:
>
> XML Parsing Error: prefix not bound to a namespace
> Location:http://localhost:8080/analysis/inprocess
> Line Number 78, Column 1:
> 
> ^
>
> I am not sure what "choose" is or where to find it and am having
> trouble finding documentation online.  I am still working with
> Lift-1.0, could this be the problem?
>
> Thanks,
> David
>
> On Jun 12, 6:35 am, wapgui  wrote:
>
> > I do similar things.
>
> > First there is a snippet using the bind functionality.
> > var image : FileParamHolder = _
>
> > bind("widget", xhtml,
> >   "image" -> fileUpload(image = _)
>
> > }
>
> > Now write out:
>
> > val wbos : ByteArrayOutputStream = build(image)
> > val fout = new File(outputFilename)
> > if (fout.exists()) {
> >    Log.error("Tried to overwrite existing file")
> >    return "Error: Filename already exists"}
>
> > val foStream = new FileOutputStream(fout)
> > foStream.write(wbos.toByteArray())
> > foStream.close()
>
> > def build(image : FileParamHolder) : ByteArrayOutputStream = {
> >   val bout = new ByteArrayOutputStream()
> >   val zipout : ZipOutputStream = new ZipOutputStream(bout)
> >   zipout.setMethod(ZipOutputStream.DEFLATED);
> >   zipout.setLevel(Deflater.DEFAULT_COMPRESSION);
>
> >   writeImage(zos, image)
>
> > }
>
> > private def writeImage(zos: ZipOutputStream,
> > image:FileParamHolder):Unit = {
> >     if (image.fileName == "") {
> >       Log.info("Provided image file is null")
> >       return
> >     }
> >     if (image.fileName.lastIndexOf("\\") != -1) //this is needed if
> > upload is from a windows system
> >       zos.putNextEntry(new ZipEntry("res/" + image.fileName.substring
> > (image.fileName.lastIndexOf("\\")+1)))
> >     else
> >       zos.putNextEntry(new ZipEntry("res/" + image.fileName))
> >     zos.write(image.file, 0, image.file.length) //make here a loop on
> > very large files
> >     zos.closeEntry()
>
> > }
>
> > Cheers
> > Torsten
>
> > On Jun 11, 10:24 pm, DavidV  wrote:
>
> > > I would like to upload a .csv file onto the web server so I can then
> > > parse it in my webapp, and put certain fields into my database.  I
> > > would like a "Browse..." button, much like the one shown on this Lift
> > > example page:http://demo.liftweb.net/file_upload
> > > Can anyone point me in the right direction as to how to get started
> > > doing this, or tell me where I can find the example code for the link
> > > I provided?  I can't seem to locate it in liftweb in github
> > > thanks,
> > > David

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[Lift] Re: Mapper record deletion

[Magnus Alvestad]

> As I move deeper into learning Lift, I now want to start deleting
> Mapper records in the ToDo example.

Here's how I did it (based on suggestions in this group, I think):

bind ( "question", html,
  "text" -> ..,
  "delete" -> ajaxButton(Text("Remove"),
  Call("dialog", Str("Do you want to delete the question?")),
  () => {q.delete_!; S.notice( "Deleted the question!"); reDraw
()})
)

.. and then in the template (default.html) ..



function dialog(text, theCall) {
  if (confirm(text)) theCall();
}



-Magnus

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[Lift] Re: security

[James Matlik]

This looks to be a very significant selling point for Lift.  I realize there
are some high level comments about Lift being designed for security, but I
haven't seen any details explaining what measures have been put in place to
qualify those statements.  This is a prime example of what should be put
into some "marketing detail" pages on the wiki.  I would love to see a
writeup covering these security measures exhaustively.

On Sat, Jun 13, 2009 at 4:47 PM, David Pollak  wrote:

>
>
> On Wed, Jun 10, 2009 at 4:45 PM, Oliver Lambert wrote:
>
>>
>>
>> On Wed, Jun 10, 2009 at 11:58 PM, David Pollak <
>> feeder.of.the.be...@gmail.com> wrote:
>>
>>>
>>>
>>> On Tue, Jun 9, 2009 at 11:39 PM, marius d. wrote:
>>>

 Hi,

 For most apps cannonicalization is not really necessary as the
 character stream for form-url-encoded is UTF-8 by default as Lift uses
 UTF-8 by default. Oh and the conversion from URL encoding to plain
 UTF-8 content is really done by container and when we get the params
 from the request object they are already well formed. Now if we're
 talking about a higher level of validation that's a different story
 and IMO this is an application aspect and not much a framework one.
>>>
>>>
>>> And Lift does URL Decoding of the paths before presenting them as the
>>> Req() object.
>>>
>>> More broadly, Lift should provide all the features of ESAPI out of the
>>> box.  If there are particular things that ESAPI offers that Lift doesn't,
>>> please flag them and we'll add them.
>>>
>>> I did a bunch of years as VPE and CTO at a web app security company.  In
>>> general, I've worked to make sure that Lift has security baked in and that
>>> the developer has to work to make the app insecure, rather than vice versa.
>>>  If I missed a spot, Lift will be enhanced to make sure it does have
>>> security baked in.
>>>
>>>
>> From my perspective Lift is secure, much more so than other frameworks
>> I've used. The current set of Lift apps, that I've helped develop, have
>> survived outsourced penetration testing without requiring any modifications
>> at all.  Great!
>>
>> I'm not a security expert, but I am being asked to consider ESAPI
>> features. From my limited understanding, the UTF-8 encoding is fine and Lift
>> protects the response from displaying any scripts or html that might have
>> inadvertently been added to the database.  The problem is more what is being
>> validated and how its being validated. I don't buy Marius's claim that this
>> is somehow a higer order validation that is an application concern rather
>> than a framework one. The internet has all the insecurities it has, because
>> security has been left to the application developer.
>>
>> As far a I can see, one problem lies when a string is obtained from the
>> web page and instanciated into a String object.  For instance, if it comes
>> in as
>> alert('XSS'), then its probably not what you want.
>>
>
> I see no reason that you don't want this.  As long as it's a String, it
> will be XML escaped when it's presented to the user.  Unless this String
> were put into an Unparsed block (some affirmative action by the developer),
> it would always appear to the user the way the user typed it.  This is the
> advantage of keeping everything as XML until just before the page is
> delivered to the user.
>
>
>> Why does it matter if something like this gets stored in your database -
>> perhaps because it's one part of your security.  In addition if it comes in
>> doubly encoded as
>>
>> %253Cscript%253Ealert('XSS')%253C%252Fscript%253E
>>
>> then its probably also not what you want.
>>
>> 1) To stop double encoding, ESAPI suggests that you use cannonicalization
>> to convert the strings to a similar format before validation.
>>
>
> Lift is fact does this.  Lift and/or the app server converts the bytes to
> Strings using UTF-8 encoding and then splits and URL-decodes the Strings
> before delivering them to the application.  The application always sees the
> String as the user typed the String.  All validation is done against Strings
> that have been decoded the same way.
>
>
>>
>> 2) After, the input has been cannonicalized, ESAPI suggests that the input
>> should be validated against a whitelist of allowed charaters.
>>
>
> I disagree with this recommendation within the bounds of a Lift app.
> Strings in Java survive having \00 characters.  They are impurvious to
> buffer overflow attacks.  Strings are escaped before being used as part of
> queries by the JDBC and/or JPA systems (unless the developer explicitly
> builds their own query string, which requires that the developer sign and
> date the code and is a place where one can grep for the construct during a
> code review.)  Strings back out to XML or XHTML will be escaped properly,
> unless the developer uses Unparsed() in rendering... once again, something
> that can be easily checked for in a code review.
>
> The above rules don't apply to PHP or other code that

[Lift] Re: Develop / Production System

[Oliver Lambert]

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

On Tue, Jun 16, 2009 at 7:25 PM, Tobias Daub  wrote:

>
> Ok, thanks.
>
> Well, with the pom.xml file it was a little bit strange. I had to change
> the Lift version to do the mvn clean install and then change it back.
> I've no idea why, but it was the only things that helped.
>
>
> > Maven stores project dependencies in a repository (by default, its
> > called .m2). When you move a Lift application from one system to
> > another, the repository on the new system may need to be updated,
> > hence your requirement to do a "mvn clean install".
> >
> > Don't know what you changed on the pom.xml (if you have any hard coded
> > paths, you might have to change them).
> >
> > On Tue, Jun 16, 2009 at 2:41 AM, Tobias Daub  > > wrote:
> >
> >
> > Hi There,
> >
> > I would like to know whats the best way to move an existing Lift
> > installation from one system to another. I ask this, because I had
> > some
> > problems after I just copied the whole directory (I had to edit the
> > pom.xml file and do "mvn clean install").
> >
> >
> > thanks
> >
> >
> >
> >
> > >
>
>
> >
>

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[Lift] Re: Mapper or Record?

[marius d.]

On Jun 16, 3:17 pm, Jeppe Nejsum Madsen  wrote:
> On 16 Jun 2009, marius d. wrote:
>
> > Lift Record currently is not implemented for DB interaction but it's
> > targeted for 1.1 release.
>
> That probably explains why I couldn't find much when looking through the
> source :-)
>
>
>
> > I'd say to start development using the Mapper and when Record is ready
> > migrate to the Record. I would expect to be a fairly easy transition
> > from Mapper to Record though.
>
> Ok, sounds good. Will mapper be extended in 1.1 or is it only bug fixing
> and all new development will happen in Record?

I wouldn't expect much new stuff on the Mapper area. It will be
maintained though for a long time. So new stuff should come for
Record ...

>
> /Jeppe
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[Lift] Re: Mapper or Record?

[Jeppe Nejsum Madsen]

On 16 Jun 2009, marius d. wrote:


> Lift Record currently is not implemented for DB interaction but it's
> targeted for 1.1 release.

That probably explains why I couldn't find much when looking through the
source :-)
> 
> I'd say to start development using the Mapper and when Record is ready
> migrate to the Record. I would expect to be a fairly easy transition
> from Mapper to Record though.

Ok, sounds good. Will mapper be extended in 1.1 or is it only bug fixing
and all new development will happen in Record?

/Jeppe


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[Lift] Re: scala-forum.org is open!

[David Bernard]

Don't worry about duplication, I removed other post.

On Tue, Jun 16, 2009 at 12:45, Christian Helmbold  wrote:

>
> Hi,
>
> the new forum for Scala developers is open: http://scala-forum.org
>
> Come in and talk about Scala programming and Scala frameworks!
>
> Regards,
> Christian
>
>
> PS: I hope this message is sent only once - Google told me about troubles
> and I tried it several times.
> --
> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
>
> >
>

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[Lift] Re:

[Ewan]

Thanks thats how I have done it now but was just checking that there
was not some magic that I had missed.

-- Ewan

On Jun 16, 1:00 am, David Pollak 
wrote:
> On Mon, Jun 15, 2009 at 3:59 PM, Ewan  wrote:
>
> > Hi all
>
> > I have bind that renders a link and at the moment I want the link to
> > include a couple of query params ie.
>
> > Click me
>
> > I figured I'd be able to do something like the following except the
> > additional "key/id" is added which messes it up.
>
> > "value" -> SHtml.link("/search?q1=v1", () => doSearch, SText("Click
> > me"))
>
> How about just hardcoding things and using S.param("q1") to extract the
> parameters?
>
> While it's useful to bind to functions for stateful stuff, if you're just
> passing some hard coded parameters, it seems to me that you're best off
> using query parameters.
>
>
>
> > Looking at the src I can't see how this would work.  I guess using a
> > requestVar would be the recommended solution but how does that work
> > for bookmarked urls between server restarts?
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Git some:http://github.com/dpp

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[Lift] Re: Develop / Production System

[Tobias Daub]

Ok, thanks.

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


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


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[Lift] scala-forum.org is open!

[Christian Helmbold]

Hi,

the new forum for Scala developers is open: http://scala-forum.org

Come in and talk about Scala programming and Scala frameworks!

Regards,
Christian


PS: I hope this message is sent only once - Google told me about troubles and I 
tried it several times.
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[Lift] Re: Mapper or Record?

[marius d.]

Lift Record currently is not implemented for DB interaction but it's
targeted for 1.1 release.

I'd say to start development using the Mapper and when Record is ready
migrate to the Record. I would expect to be a fairly easy transition
from Mapper to Record though.

Br's,
Marius

On Jun 16, 12:16 pm, Jeppe Nejsum Madsen  wrote:
> Hi
>
> I'm about to start on the data layer of our project, using 1.1-SNAPSHOT
> Seeing that record is supposed to be the new ORM technology in 1.1, is
> it ready to start using it for real work (production timeframe within a
> month or 2)? If yes, any pointers to getting started? Seems most of the
> doc is based on mapper.
>
> On a (semi) related note: I believe Lift's ORM (either mapper or
> record) is sufficient for most of the CRUD tasks we have, but there will
> also be a fair amount of interactive reporting (tables/charts). What is
> the best way to integrate this with Lift? In the end, I think most
> queries can be handled by SQL statements with aggregate functions, group
> by etc, but what is the best strategy to map this into Lift objects?
>
> /Jeppe
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[Lift] Mapper or Record?

[Jeppe Nejsum Madsen]

Hi 

I'm about to start on the data layer of our project, using 1.1-SNAPSHOT
Seeing that record is supposed to be the new ORM technology in 1.1, is
it ready to start using it for real work (production timeframe within a
month or 2)? If yes, any pointers to getting started? Seems most of the
doc is based on mapper.

On a (semi) related note: I believe Lift's ORM (either mapper or
record) is sufficient for most of the CRUD tasks we have, but there will
also be a fair amount of interactive reporting (tables/charts). What is
the best way to integrate this with Lift? In the end, I think most
queries can be handled by SQL statements with aggregate functions, group
by etc, but what is the best strategy to map this into Lift objects?


/Jeppe

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[Lift] Re: Lift Jquery autocomplete *** API CHANGE CANDIDATE ***

[Viktor Klang]

On Tue, Jun 16, 2009 at 9:16 AM, marius d.  wrote:

>
> two things:
>
> 1. Hate msysgit


+Long.MAX_VALUE


>
> 2. Thanks to Jorge for his help in committing the file
>
>
> Marius
>
> On Jun 16, 9:41 am, "marius d."  wrote:
> > yes yes yes ... entirely my bad as I missed that out ...
> >
> > I'll correct it very soon.
> >
> > Marius
> >
> > On Jun 16, 3:07 am, "Bryan."  wrote:
> >
> > > Hi Marius,
> >
> > > I just updated to the tip and got a build failure:
> >
> > > [WARNING] /home/bryan/public-repos/git/liftweb/sites/example/src/main/
> > > scala/net/liftweb/example/snippet/Ajax.scala:65: error: value
> > > autocomplete is not a member of object net.liftweb.http.jquery.JqSHtml
> > > [WARNING]  "auto" -> JqSHtml.autocomplete("", buildQuery _, _
> > > => ()))
> >
> > > --Bryan
> >
> > > On Jun 15, 2:16 pm, "marius d."  wrote:
> >
> > > > Folks,
> >
> > > > I just made the autocomplete a Lift widget so it does not exist
> > > > anymore in JqShtml object. Here is an example on how to use it:
> >
> > > > - For Ajax autocomplete
> > > > AutoComplete("", (current, limit) => {
> > > >   println("current = " + current)
> > > >   (1 to limit).map(v => "Value_" + v)
> > > > }, s => println("submit " + s))
> >
> > > > - For pre-provided options list
> > > >AutoComplete.autocompleteObj(/*same params as bfore*/)
> >
> > > > This may break your app but I think it is very easy to update it.
> >
> > > > I also fixed some bugs:
> > > > 1. It didn;t work if the container cookies were turned off
> > > > 2. hovering on the options list did not work on Ubuntu FF3 at least
> > > > due to a capitalizated LI equality test.
> >
> > > > If you encounter any problems, please let me know.
> >
> > > > Br's,
> > > > Marius
> >
> > > > On Jun 8, 12:34 pm, Kevin Wright 
> > > > wrote:
> >
> > > > > +1
> >
> > > > > As an evolving framework, it definitely makes more sense to favour
> > > > > consistency over backward compatibility at this stage
> >
> > > > > On Mon, Jun 8, 2009 at 9:00 AM, marius d. 
> wrote:
> >
> > > > > > Other folks, please speak up ! :) ... I will soon migrate this
> into a
> > > > > > Lift widget.
> >
> > > > > > Br's,
> > > > > > Marius
> >
> > > > > > On Jun 6, 4:53 pm, David Pollak 
> wrote:
> > > > > > > I think I'm using in one place in one project so my api
> breakage factor
> > > > > > is
> > > > > > > low.  I'm okay with moving it unless someone else is going to
> feel real
> > > > > > > pain.
> >
> > > > > > > On Jun 6, 2009 12:24 AM, "Marius" 
> wrote:
> >
> > > > > > > Is there a reason why the JQuery autocomplete is not a Lift
> widget but
> > > > > > > instead it lives in http/jquery package? .. I remember a long
> time ago
> > > > > > > me putting it in the jquery package to separate SHtml stuff
> that is
> > > > > > > dependent on JQuery to the others.
> >
> > > > > > > Thoughts?
> >
> > > > > > > Br',
> > > > > > > Marius
> >
>


-- 
Viktor Klang
Scala Loudmouth

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[Lift] Re: Lift Jquery autocomplete *** API CHANGE CANDIDATE ***

[marius d.]

two things:

1. Hate msysgit
2. Thanks to Jorge for his help in committing the file


Marius

On Jun 16, 9:41 am, "marius d."  wrote:
> yes yes yes ... entirely my bad as I missed that out ...
>
> I'll correct it very soon.
>
> Marius
>
> On Jun 16, 3:07 am, "Bryan."  wrote:
>
> > Hi Marius,
>
> > I just updated to the tip and got a build failure:
>
> > [WARNING] /home/bryan/public-repos/git/liftweb/sites/example/src/main/
> > scala/net/liftweb/example/snippet/Ajax.scala:65: error: value
> > autocomplete is not a member of object net.liftweb.http.jquery.JqSHtml
> > [WARNING]          "auto" -> JqSHtml.autocomplete("", buildQuery _, _
> > => ()))
>
> > --Bryan
>
> > On Jun 15, 2:16 pm, "marius d."  wrote:
>
> > > Folks,
>
> > > I just made the autocomplete a Lift widget so it does not exist
> > > anymore in JqShtml object. Here is an example on how to use it:
>
> > > - For Ajax autocomplete
> > >     AutoComplete("", (current, limit) => {
> > >       println("current = " + current)
> > >       (1 to limit).map(v => "Value_" + v)
> > >     }, s => println("submit " + s))
>
> > > - For pre-provided options list
> > >    AutoComplete.autocompleteObj(/*same params as bfore*/)
>
> > > This may break your app but I think it is very easy to update it.
>
> > > I also fixed some bugs:
> > > 1. It didn;t work if the container cookies were turned off
> > > 2. hovering on the options list did not work on Ubuntu FF3 at least
> > > due to a capitalizated LI equality test.
>
> > > If you encounter any problems, please let me know.
>
> > > Br's,
> > > Marius
>
> > > On Jun 8, 12:34 pm, Kevin Wright 
> > > wrote:
>
> > > > +1
>
> > > > As an evolving framework, it definitely makes more sense to favour
> > > > consistency over backward compatibility at this stage
>
> > > > On Mon, Jun 8, 2009 at 9:00 AM, marius d.  
> > > > wrote:
>
> > > > > Other folks, please speak up ! :) ... I will soon migrate this into a
> > > > > Lift widget.
>
> > > > > Br's,
> > > > > Marius
>
> > > > > On Jun 6, 4:53 pm, David Pollak  wrote:
> > > > > > I think I'm using in one place in one project so my api breakage 
> > > > > > factor
> > > > > is
> > > > > > low.  I'm okay with moving it unless someone else is going to feel 
> > > > > > real
> > > > > > pain.
>
> > > > > > On Jun 6, 2009 12:24 AM, "Marius"  wrote:
>
> > > > > > Is there a reason why the JQuery autocomplete is not a Lift widget 
> > > > > > but
> > > > > > instead it lives in http/jquery package? .. I remember a long time 
> > > > > > ago
> > > > > > me putting it in the jquery package to separate SHtml stuff that is
> > > > > > dependent on JQuery to the others.
>
> > > > > > Thoughts?
>
> > > > > > Br',
> > > > > > Marius
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