Re: [Lift] Goals for type and method renaming for Lift 2.0 - was: Open discussion on Lift Name Calling practices

[Heiko Seeberger]

Thank you for writing this up, Naftoli.
I edited the abbreviation section ...

Heiko

2009/12/18 Naftoli Gugenheim 

> (Not sure why on Chrome the wiki article page is all centered. Reported it
> to Chrome.)
>
> Can everyone look over the article? Especially everyone "quoted" in it --
> Kris, Jim, DPP, Heiko, and anyone who I may have missed -- can you make sure
> everything represents your opinion correctly?
> Then if there is any disagreement after everyone's opinion is clarified we
> need to make some decisions together.
> This should not take much time, but it's very valuable! Thanks.
>
>
> 2009/12/15 Naftoli Gugenheim 
>
> I compiled much of this thread into
>> http://wiki.github.com/dpp/liftweb/about-naming-conventions in raw form.
>> As we continue to discuss the naming goals and guidelines and vote or decide
>> on controversial goals, that wiki page should become more consolidated and
>> less of a copy-paste of a discussion. :)
>>
>>
>> On Mon, Dec 14, 2009 at 6:32 PM, Kris Nuttycombe <
>> kris.nuttyco...@gmail.com> wrote:
>>
>>> On Mon, Dec 14, 2009 at 12:31 PM, David Pollak
>>>  wrote:
>>> > Folks,
>>> >
>>> > Lift allows developers to create web sites that are:
>>> >
>>> > Reliable (which includes secure)
>>> > Maintainable/concise
>>> > Highly interactive
>>> > Easy to build
>>> > High Performance
>>> > Easy to on-board (initial understanding of the APIs)
>>> >
>>> > Lift's APIs should reflect these rank-ordered goals.  Some of these
>>> goals
>>> > are in tension with each other.  For example, easy on-boarding (e.g.,
>>> longer
>>> > method names, more traditional imperative style) is in tension with
>>> concise.
>>> >
>>> > There's also a very diverse Lift community.
>>> >
>>> > I use Emacs for a lot of my Lift coding.  I know folks who use TextMate
>>> for
>>> > Lift coding.  Having long method names assumes the use of an IDE which
>>> has
>>> > name completion.  Lift's APIs must serve both communities.
>>> > People are coming to Lift from Java, Ruby, PHP, and other backgrounds.
>>> > Assuming Scala conventions rather than a "best choice" for naming does
>>> a
>>> > dis-service to the polygots.  Further, most of Scala's API conventions
>>> > except for the collections stuff is not in my opinion that well thought
>>> out
>>> > or consistent.
>>> > Many of Lift's APIs have evolved correctly based on actual usage
>>> patterns.
>>> > For example, the initially counter-intuitive use of apply to set fields
>>> and
>>> > vars works far better than any other mechanism, especially when
>>> chaining
>>> > calls.  I've tried many different mechanisms (e.g., update(), Pascal
>>> style
>>> > :=, set(), etc.) for setting fields and the one that everybody
>>> gravitated to
>>> > was apply().
>>> >
>>> > We also have to consider the existing code base.  I've personally got
>>> 150K
>>> > lines of Lift-code under management.  If we start breaking APIs without
>>> a
>>> > compelling reason, it costs me money and it costs my clients less of my
>>> > time.  What's the impact to various different current users of Lift of
>>> > breaking APIs without a compelling reason (and "I like this name better
>>> than
>>> > that name" or "this name is more consistent" are not compelling
>>> reasons.)
>>> > So, my criteria for any name changes (and this is not open to any type
>>> of
>>> > negotiation and I've been 100% consistent about this since the
>>> discussion
>>> > began) is:
>>> >
>>> > If the name change can be accomplished with a deprecation of the old
>>> name
>>> > without breaking any existing APIs, then the name change can be the
>>> "better"
>>> > name.
>>> > If the name change is internal to Lift or is in a little-used feature
>>> (e.g.,
>>> > Kris's API changes in Loc) such that very few projects will likely be
>>> > impacted by a name change and those that are impacted are sufficiently
>>> savvy
>>> > that they will understand the change and be able to make it in a matter
>>> of
>>> > minutes.
>>> > Any class name or object name change that does not meet the above
>>> criteria
>>> > must be compelling.  For example, we changed from Scala Actors to Lift
>>> > Actors.  This was a substantial amount of breakage, but there were no
>>> > alternatives and the Scala Actor memory retention issues were
>>> materially
>>> > impacting many different sites and we had worked on various attempted
>>> > solutions over a 10 month period.  If we're going to break without
>>> > deprecation and the breakage is going to impact a substantial part of
>>> the
>>> > Lift community, there must be a compelling reason to make the breakage.
>>> >
>>> > On Sun, Dec 13, 2009 at 10:49 AM, Kris Nuttycombe
>>> >  wrote:
>>> >>
>>> >> To this point, the only goals that have been recommended for this
>>> >> effort are those that I've noted below:
>>> >>
>>> >> >> 1) Remove ambiguity wherever possible! There are a number of places
>>> >> >> where very similar names are used to refer to utterly different
>>> >> >> things.
>>> >>
>>> >> >> 2) A

[Lift] Make it possible to add LocParams to MetaMegaProtoUser's menus

[Heiko Seeberger]

Hi,

I created an issue (#251) to "Make it possible to add LocParams to
MetaMegaProtoUser's menus":
The various user related menus are created by methods xxxMenuLoc (e.g.
loginMenuLoc) which give us no flexibility to add LocParams. Why would there
be a need for that? E.g. for adding a LocGroup in order to customize menu
display.
The idea is that there are additional methods that are called from
xxxMenuLoc in order to populate the LocParams. The default implementation
will add a LocGroup("user").

Before implementing that I would like to ask for you opinion.

Thank you,

Heiko Seeberger

My job: weiglewilczek.com
My blog: heikoseeberger.name
Follow me: twitter.com/hseeberger
OSGi on Scala: scalamodules.org
Lift, the simply functional web framework: liftweb.net

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Re: [Lift] Confused about validation

[Jeppe Nejsum Madsen]

Naftoli Gugenheim  writes:

> What would such an abstraction do?
> What code would you like to write (including templates) and what should it do?

I had some input here:

http://groups.google.com/group/liftweb/browse_thread/thread/814de5be30410925/4a327d21cf4cc123?lnk=gst&q=jeppe+wizard+forms#4a327d21cf4cc123

/Jeppe

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Re: [Lift] Make it possible to add LocParams to MetaMegaProtoUser's menus

[Jeppe Nejsum Madsen]

Heiko Seeberger  writes:

> Hi,
>
> I created an issue (#251) to "Make it possible to add LocParams to
> MetaMegaProtoUser's menus":
> The various user related menus are created by methods xxxMenuLoc (e.g.
> loginMenuLoc) which give us no flexibility to add LocParams. Why would there
> be a need for that? E.g. for adding a LocGroup in order to customize menu
> display.

Agreed. I had to make my own:

var logoutMenu = Menu(Loc("logout", User.logoutPath, "Log ud",
User.logoutTemplate, appMenuGroup))


> The idea is that there are additional methods that are called from
> xxxMenuLoc in order to populate the LocParams. The default
> implementation will add a LocGroup("user").
>
> Before implementing that I would like to ask for you opinion.

I think this should mimic the way things are done in CRUDify, ie:

 def showAllMenuLoc: Box[Menu] =
  Full(Menu(Loc("List "+Prefix, listPath, showAllMenuName,
locSnippets :: Loc.Template(showAllTemplate) :: 
showAllMenuLocParams)))

  /**
   * Override to include new Params for the show all menu
   */
  def showAllMenuLocParams: List[Loc.AnyLocParam] = Nil

I think the default impl should just be empty.

/Jeppe

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[Lift] (Maybe bug)comet long polling into javascript loop?

[Andrea Peruffo]

I have a project where a snippet generates the code for a comet actor, but 
when I open two(or more) windows of the same browser on the page I can see 
that javascript on both pages start to makes continuous comet calls.

I attach a simple project that reproduce the problem.

Please any fix or workaround??

Andrea

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CometPolling.tar.gz
Description: application/tgz

[Lift] Re: (Maybe bug)comet long polling into javascript loop?

[Marius]

This is not a bug. When Lift detects multiple requests for the same
session it breaks out the Comet request. This is a safety mechanism in
order to avoid HTTP connection starvation on the client side. This is
because browsers have a very limited connection pools and the number
of parallel HTTP connections are quite low varying from 2 to probably
8 depending on the browser. Note that this "pool" is shared among
different tab browsers AND different instances of the same browser.

So if you want to test with multiple browsers on you dev env use
different browsers such that open your app with Firefox, then open the
same app with Chrome etc.

Br's,
Marius

On Dec 18, 11:34 am, Andrea Peruffo  wrote:
> I have a project where a snippet generates the code for a comet actor, but
> when I open two(or more) windows of the same browser on the page I can see
> that javascript on both pages start to makes continuous comet calls.
>
> I attach a simple project that reproduce the problem.
>
> Please any fix or workaround??
>
> Andrea
>
>  CometPolling.tar.gz
> 7KViewDownload

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Re: [Lift] Re: (Maybe bug)comet long polling into javascript loop?

[Andrea Peruffo]

And this does not affect performances? or server side computations?

Andrea


Il Friday 18 December 2009 10:50:17 Marius ha scritto:
> This is not a bug. When Lift detects multiple requests for the same
> session it breaks out the Comet request. This is a safety mechanism in
> order to avoid HTTP connection starvation on the client side. This is
> because browsers have a very limited connection pools and the number
> of parallel HTTP connections are quite low varying from 2 to probably
> 8 depending on the browser. Note that this "pool" is shared among
> different tab browsers AND different instances of the same browser.
>
> So if you want to test with multiple browsers on you dev env use
> different browsers such that open your app with Firefox, then open the
> same app with Chrome etc.
>
> Br's,
> Marius
>
> On Dec 18, 11:34 am, Andrea Peruffo  wrote:
> > I have a project where a snippet generates the code for a comet actor,
> > but when I open two(or more) windows of the same browser on the page I
> > can see that javascript on both pages start to makes continuous comet
> > calls.
> >
> > I attach a simple project that reproduce the problem.
> >
> > Please any fix or workaround??
> >
> > Andrea
> >
> >  CometPolling.tar.gz
> > 7KViewDownload
>
> --
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[Lift] stable identifier required - problems with rewriting requests

[ortis]

i have problem with rewriting

if i do something like this
  LiftRules.rewrite.append {
 case RewriteRequest(ParsePath(List("Documents"), _,
_, _), _, _) =>
 RewriteResponse(List("Documents", "VZN" ))
  }

evrything works fine but if i do

val doc = "Documents"

   LiftRules.rewrite.append {
case RewriteRequest(ParsePath(List(doc),
_, _, _), _, _) =>
  RewriteResponse(List("Documents",
"VZN" ))
   }
in browser i can see only : The Requested URL / was not found on this
server

if i do

  LiftRules.rewrite.append {
case RewriteRequest(ParsePath(List
( something.toString ), _, _, _), _, _) =>
  RewriteResponse(List("Documents",
"VZN" ))
   }
i get error "stable identifier required"

Is there something i do not know about rewriting, or problem is in
something else. I'm new in scala and lift, and
i can't find any solution for this for now

Can anybody help?

very thanks

majo


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[Lift] Re: (Maybe bug)comet long polling into javascript loop?

[Marius]

Not sure what you mean ... what concerns do you have about
performance? ... If you are referring to this mechanism built in Lift,
there is virtually no performance impact. This is very lightweight.

If you are referring to something else, please provide more details
about your concerns.

Br's,
Marius

On Dec 18, 11:58 am, Andrea Peruffo  wrote:
> And this does not affect performances? or server side computations?
>
> Andrea
>
> Il Friday 18 December 2009 10:50:17 Marius ha scritto:
>
> > This is not a bug. When Lift detects multiple requests for the same
> > session it breaks out the Comet request. This is a safety mechanism in
> > order to avoid HTTP connection starvation on the client side. This is
> > because browsers have a very limited connection pools and the number
> > of parallel HTTP connections are quite low varying from 2 to probably
> > 8 depending on the browser. Note that this "pool" is shared among
> > different tab browsers AND different instances of the same browser.
>
> > So if you want to test with multiple browsers on you dev env use
> > different browsers such that open your app with Firefox, then open the
> > same app with Chrome etc.
>
> > Br's,
> > Marius
>
> > On Dec 18, 11:34 am, Andrea Peruffo  wrote:
> > > I have a project where a snippet generates the code for a comet actor,
> > > but when I open two(or more) windows of the same browser on the page I
> > > can see that javascript on both pages start to makes continuous comet
> > > calls.
>
> > > I attach a simple project that reproduce the problem.
>
> > > Please any fix or workaround??
>
> > > Andrea
>
> > >  CometPolling.tar.gz
> > > 7KViewDownload
>
> > --
>
> > You received this message because you are subscribed to the Google Groups
> > "Lift" group. To post to this group, send email to
> > lift...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > liftweb+unsubscr...@googlegroups.com. For more options, visit this group at
> >http://groups.google.com/group/liftweb?hl=en.

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Re: [Lift] Re: (Maybe bug)comet long polling into javascript loop?

[David Pollak]

On Fri, Dec 18, 2009 at 1:58 AM, Andrea Peruffo  wrote:

> And this does not affect performances? or server side computations?
>

The short answer is that it does increase the amount of HTTP traffic, but
with HTTP keep-alive, that's not a lot of new TCP/IP connections.

On the server side, Lift does its Comet support very early in the HTTP
request/response cycle and the computations for handling the setup/tear down
of the Comet long poll and minimal.

If you have an actual application that has actual performance issues related
to this, there are things that can be done:

   - You can use DNS wildcarding to sent the Comet long poll requests to a
   different, random host and this will allow more than 2 HTTP requests to the
   same server because the browser logic is based on the host name.
   - You can include your own logic for when a Comet long poll operation is
   terminated

But (and I say this based on many years of experience deploying Lift-based
Comet apps and interacting on this list and privately with folks who have
built Lift apps), it's never been an actual production issue and there are
plenty of folks using Lift and Lift's comet long polling in production for
non-trivial applications.


>
> Andrea
>
>
> Il Friday 18 December 2009 10:50:17 Marius ha scritto:
> > This is not a bug. When Lift detects multiple requests for the same
> > session it breaks out the Comet request. This is a safety mechanism in
> > order to avoid HTTP connection starvation on the client side. This is
> > because browsers have a very limited connection pools and the number
> > of parallel HTTP connections are quite low varying from 2 to probably
> > 8 depending on the browser. Note that this "pool" is shared among
> > different tab browsers AND different instances of the same browser.
> >
> > So if you want to test with multiple browsers on you dev env use
> > different browsers such that open your app with Firefox, then open the
> > same app with Chrome etc.
> >
> > Br's,
> > Marius
> >
> > On Dec 18, 11:34 am, Andrea Peruffo  wrote:
> > > I have a project where a snippet generates the code for a comet actor,
> > > but when I open two(or more) windows of the same browser on the page I
> > > can see that javascript on both pages start to makes continuous comet
> > > calls.
> > >
> > > I attach a simple project that reproduce the problem.
> > >
> > > Please any fix or workaround??
> > >
> > > Andrea
> > >
> > >  CometPolling.tar.gz
> > > 7KViewDownload
> >
> > --
> >
> > You received this message because you are subscribed to the Google Groups
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> > liftweb+unsubscr...@googlegroups.com.
> For more options, visit this group at
> > http://groups.google.com/group/liftweb?hl=en.
>
>
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Re: [Lift] Re: Problem in Lift 1.1-SNAPSHOT ?

[David Pollak]

On Thu, Dec 17, 2009 at 10:16 PM, ngocdaothanh wrote:

> I am sorry. That compilation error comes from Lift's branch for Scala
> 2.8.
>

The 2.8 branch is not a complete port of Lift.  It's lift-base, lift-mapper
and the lift-examples/example code.  We will complete the port (the other
Lift modules) once 2.8 Beta 1 is out and the Scala depencies are ported to
2.8 Beta1


>
>
> On 12月18日, 午前8:38, David Pollak  wrote:
> > On Thu, Dec 17, 2009 at 2:08 PM, ngocdaothanh  >wrote:
> >
> > > I checkout the source code from GitHub, do "mvn clean compile" and the
> > > output is:
> >
> > > lift-modules/lift-jta/src/main/scala/net/liftweb/transaction/
> > > TransactionContext.scala:206: error: class TransactionContext needs to
> > > be abstract, since method getUnitName in trait ScalaEMFactory of type
> > > => String is not defined
> > > class TransactionContext(private implicit val transactionService:
> > > TransactionService)
> > >  ^
> > > one error found
> >
> > > The source code from GitHub is not always compilable.
> >
> > This is simply not true.  The code on the master branch always compiles.
>  I
> > just did a checkout and compilation of the lift-jta module and it worked
> > just fine.
> >
> >
> >
> >
> >
> > > On Dec 18, 3:17 am, David Pollak 
> > > wrote:
> > > > Did you do an "mvn clean compile"?
> >
> > > > On Thu, Dec 17, 2009 at 9:27 AM, earthling_paul <
> paul.ber...@gmail.com
> > > >wrote:
> >
> > > > > While compiling my samples with Lift 1.1-SNAPSHOT I get this
> Compiler-
> > > > > Error:
> >
> > > > > [ERROR] D:\Projekte\TestProjects\hello-lift-11\src\main\scala\net
> > > > > \liftweb\hello\snippet\TD.scala:76: error: object creation
> impossible,
> > > > > since method doSync in trait AnyVarTrait of type [F](=> F)F is not
> > > > > defined
> > > > > [INFO] object QueryNotDone extends SessionVar(false)
> >
> > > > > Any ideas ?
> > > > > Regards Paul
> >
> > > > > --
> >
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> 
> >
> > > 
> 
> >
> >
> > > > > .
> > > > > For more options, visit this group at
> > > > >http://groups.google.com/group/liftweb?hl=en.
> >
> > > > --
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> > > > Beginning Scalahttp://www.apress.com/book/view/1430219890
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> >
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Re: [Lift] stable identifier required - problems with rewriting requests

[David Pollak]

For stable identifers, see the Scala Language Specification, section 8.1.4:
http://www.scala-lang.org/sites/default/files/linuxsoft_archives/docu/files/ScalaReference.pdf

You can also see this discussion:
http://old.nabble.com/About-Class-Type-match-td22309426.html

Short answer is that you cannot pattern match against the result of a method
invocation (foo.toString).  A stable identifier must be a val (something
that is calculated and will not change for the duration of the pattern match
and be upper case or in back-ticks.  So, in your case:

val doc = "Foo" // can't match against doc because it looks like something
you want to extract
val Doc = "Foo" // can match against Doc


On Fri, Dec 18, 2009 at 3:48 AM, ortis  wrote:

> i have problem with rewriting
>
> if i do something like this
>  LiftRules.rewrite.append {
> case RewriteRequest(ParsePath(List("Documents"), _,
> _, _), _, _) =>
> RewriteResponse(List("Documents", "VZN" ))
>  }
>
> evrything works fine but if i do
>
>val doc = "Documents"
>
>   LiftRules.rewrite.append {
>case RewriteRequest(ParsePath(List(doc),
> _, _, _), _, _) =>
>  RewriteResponse(List("Documents",
> "VZN" ))
>   }
> in browser i can see only : The Requested URL / was not found on this
> server
>
> if i do
>
>  LiftRules.rewrite.append {
>case RewriteRequest(ParsePath(List
> ( something.toString ), _, _, _), _, _) =>
>  RewriteResponse(List("Documents",
> "VZN" ))
>   }
> i get error "stable identifier required"
>
> Is there something i do not know about rewriting, or problem is in
> something else. I'm new in scala and lift, and
> i can't find any solution for this for now
>
> Can anybody help?
>
> very thanks
>
> majo
>
>
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[Lift] How can i update and insert record into database via Raw sql in Lift?

[Neil.Lv]

Hi all,

   How can i update and insert record into database via Raw sql in
Lift?

   I write some code but it failed, here is :

### In the model

  def updateClickCountsById(id: Long) =
DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
id=1")

  def insertRecord() =
DB.runQuery("INSERT INTO blogs click_counts=100 WHERE id=1")

###

   This two method doesn't work, so how can i update and insert via
raw SQL in the lift with Mapper?

   Thanks for any suggestion !

Cheers,
  Neil

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[Lift] Re: How can i update and insert record into database via Raw sql in Lift?

[Marcin Jurczuk]

Hi,

You have few options:
- DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
id=1")
- DBprepareStatement("UPDATE blogs set click_counts=click_counts+1
WHERE id=?",yourDBConnection) {
stmt =>
stmt.setLong(1,1)
stmt.executeUpdate()
}
Where first 1 in setLong is position in prepared statment where you
will put second value. Since You have only one ? it always will be
"1".

WARNING:
runQuery is vulnerable to SQL injection in many situations (mostly
where string is passed to query)


Marcin,

On 18 Gru, 15:45, "Neil.Lv"  wrote:
> Hi all,
>
>    How can i update and insert record into database via Raw sql in
> Lift?
>
>    I write some code but it failed, here is :
>
> ### In the model
>
>   def updateClickCountsById(id: Long) =
>     DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
> id=1")
>
>   def insertRecord() =
>     DB.runQuery("INSERT INTO blogs click_counts=100 WHERE id=1")
>
> ###
>
>    This two method doesn't work, so how can i update and insert via
> raw SQL in the lift with Mapper?
>
>    Thanks for any suggestion !
>
> Cheers,
>   Neil

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[Lift] MetaMapper broke LifecycleCallbacks ?

[night_stalker]

I need to add a beforeSave() callback, so I wrote:

class X extends LongKeyedMapper[X] with IdPK with
LifecycleCallbacks {
  def getSingleton = X
  def beforeSave {
println("hi!")
  }
  ...
}
object X extends X with LongKeyedMetaMapper[X] {
  ...
}

Then got a compile error:

[ERROR]  X.scala:35: error: error overriding method
beforeValidation in trait LifecycleCallbacks of type => Unit;
[INFO]  method beforeValidation in trait MetaMapper of type => List
[(com.lawsite.model.precedent.PrecedentContent) => Unit] needs
`override' modifier

Is it a bug or, am I doing something wrong ?

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Re: [Lift] MetaMapper broke LifecycleCallbacks ?

[Naftoli Gugenheim]

I think LifecycleCallbacks is needed for fields, not the mapper itself.

-
night_stalker wrote:

I need to add a beforeSave() callback, so I wrote:

class X extends LongKeyedMapper[X] with IdPK with
LifecycleCallbacks {
  def getSingleton = X
  def beforeSave {
println("hi!")
  }
  ...
}
object X extends X with LongKeyedMetaMapper[X] {
  ...
}

Then got a compile error:

[ERROR]  X.scala:35: error: error overriding method
beforeValidation in trait LifecycleCallbacks of type => Unit;
[INFO]  method beforeValidation in trait MetaMapper of type => List
[(com.lawsite.model.precedent.PrecedentContent) => Unit] needs
`override' modifier

Is it a bug or, am I doing something wrong ?

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[Lift] Re: Problem in Lift 1.1-SNAPSHOT ?

[earthling_paul]

David,

mvn clean compile

worked. Thanks!

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[Lift] Re: MetaMapper broke LifecycleCallbacks ?

[Gijs S.]

I had the same problem with a User object that extends
MetaMegaProtoUser[User], which has the MetaMapper trait as well.

The afterSave you wish to override is defined in the trait
net.liftweb.mapper.MetaMapper as def afterSave: List[(A) => Any] =
Nil.

You can add an operation to afterSave like this:

class X extends LongKeyedMapper[X] with IdPK {
  def getSingleton = X

  def myAfterSaveOperation(obj: X): Unit = {
println("hi!")
  }

  def myOtherAfterSaveOperation(obj: X): Unit = {
println("hi again!")
  }

  override def afterSave = myAfterSaveOperation _ ::
myOtherAfterSaveOperation _ :: Nil
  /* Equal to: override def afterSave = List(myAfterSaveOperation
_, myOtherAfterSaveOperation _) */
  ...
}
object X extends X with LongKeyedMetaMapper[X] {
 ...
}

Here the underscore after myAfterSaveOperation makes it a partially
applied function.
This is similar to the way validations are added to MetaMapper
classes, as decribed in listing 6.38 in the Lift book (http://
groups.google.com/group/the-lift-book).

MetaMapper does not implement LifecycleCallbacks, that trait is indeed
used in MappedFields.

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[Lift] Re: MetaMapper broke LifecycleCallbacks ?

[night_stalker]

Got it, I was a little bit confused :)

class X extends LongKeyedMapper[X] with IdPK {
  ...
}
object X extends X with LongKeyedMetaMapper[X] {
  override def beforeSave = List((x: X) => {
println("hi")
()
  })
}

On Dec 18, 11:50 pm, Naftoli Gugenheim  wrote:
> I think LifecycleCallbacks is needed for fields, not the mapper itself.

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[Lift] Re: How can i update and insert record into database via Raw sql in Lift?

[Neil.Lv]

Hi Marcin,

   Thank you very much! The update statement works now!

   There is a question about the insert statement, how can i use the
prepareStatement ?

###
  "INSERT INTO blogs click_counts=100 WHERE id=1"
###

   I'm not familiar with it,

   Thanks very much!

   :)

Cheers,
  Neil

On Dec 18, 11:13 pm, Marcin Jurczuk  wrote:
> Hi,
>
> You have few options:
> - DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
> id=1")
> - DBprepareStatement("UPDATE blogs set click_counts=click_counts+1
> WHERE id=?",yourDBConnection) {
> stmt =>
> stmt.setLong(1,1)
> stmt.executeUpdate()}
>
> Where first 1 in setLong is position in prepared statment where you
> will put second value. Since You have only one ? it always will be
> "1".
>
> WARNING:
> runQuery is vulnerable to SQL injection in many situations (mostly
> where string is passed to query)
>
> Marcin,
>
> On 18 Gru, 15:45, "Neil.Lv"  wrote:
>
> > Hi all,
>
> >    How can i update and insert record into database via Raw sql in
> > Lift?
>
> >    I write some code but it failed, here is :
>
> > ### In the model
>
> >   def updateClickCountsById(id: Long) =
> >     DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
> > id=1")
>
> >   def insertRecord() =
> >     DB.runQuery("INSERT INTO blogs click_counts=100 WHERE id=1")
>
> > ###
>
> >    This two method doesn't work, so how can i update and insert via
> > raw SQL in the lift with Mapper?
>
> >    Thanks for any suggestion !
>
> > Cheers,
> >   Neil

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Re: [Lift] Re: MetaMapper broke LifecycleCallbacks ?

[David Pollak]

On Fri, Dec 18, 2009 at 9:28 AM, night_stalker  wrote:

> Got it, I was a little bit confused :)
>
> class X extends LongKeyedMapper[X] with IdPK {
>   ...
> }
> object X extends X with LongKeyedMetaMapper[X] {
>   override def beforeSave = List((x: X) => {
>println("hi")
>()
>  })
> }
>

When you override this method, you *must* call super:

override def beforeSave = doHi _ :: super.beforeSave // You *must* include
the super list

private def doHi(inst: X) {println("hi")}




>
> On Dec 18, 11:50 pm, Naftoli Gugenheim  wrote:
> > I think LifecycleCallbacks is needed for fields, not the mapper itself.
>
> --
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[Lift] Nexus/Hudson maitenance on scala-tools.org

[Josh Suereth]

All,

Nexus/Hudson will be temporarily disabled Saturday/Sunday  from 8-11pm
EST.   These services are being upgraded.   I'll post an email 15 minutes
before the actual shutdown and immediately after things are back up and
working.  You should be able to make use of artifacts on the
scala-tools.orgserver, however nightly builds and posting releases
will be disabled.  If
anyone has a specific release/test they need performed during this period
please send me an email and I can accomodate you.


Thanks for your cooperation!

- Josh Suereth

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[Lift] Re: [scala-tools] Nexus/Hudson maitenance on scala-tools.org

[David Pollak]

On Fri, Dec 18, 2009 at 12:38 PM, Josh Suereth wrote:

> All,
>
> Nexus/Hudson will be temporarily disabled Saturday/Sunday  from 8-11pm
> EST.   These services are being upgraded.   I'll post an email 15 minutes
> before the actual shutdown and immediately after things are back up and
> working.  You should be able to make use of artifacts on the
> scala-tools.org server, however nightly builds and posting releases will
> be disabled.  If anyone has a specific release/test they need performed
> during this period please send me an email and I can accomodate you.
>

Josh,

Thanks for the heads up!

David


>
>
> Thanks for your cooperation!
>
> - Josh Suereth
>
>
>
>


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Re: [Lift] Radio labels

[David Pollak]

On Sun, Dec 13, 2009 at 9:08 PM, Todd  wrote:

> Looking to properly label my radios with  label>.  Here's my current snippet:
>
> def create(xhtml: NodeSeq) : NodeSeq = {
>
>def submitHandler() = {
>   S.redirectTo("/createSuccess?name=" + name.is);
>}
>
>var chosenMethod: Box[ContestType.Value] = Empty
>
>return bind("createForm", xhtml, "name" -> SHtml.text(
> name.is, name
> (_)),
>"type"   -> SHtml.radio(
>ContestType.elements.toList.map(_.toString),
>Empty,
>selected => chosenMethod = Box(ContestType.valueOf
> (selected)), {"id" -> {var i = 1; i.toString()}}
>).flatMap(choice => ({choice.xhtml}  for='type'>{choice.key.toString})),
>"submit" -> SHtml.submit("Submit", submitHandler _)
>)
>}
>

val radios: ChoiceHolder[String] = SHtml.radio(elements, callBack)
val radioHtml: NodeSeq = radios.items.toList.zipWithIndex.map{case (choice,
idx) => {choice.xhtml} {choice.key.toString}


>
> So to highlight the important bits : i.toString() was the beginnings
> to test out how the attributes got applied to each radio.  What I end
> up with is a bunch of  where
> the id doesn't change from 1, which is expected.  But I'm thinking
> that the additional attributes passed into the SHtml.radio button get
> applied to each input tag and are evaluated immediately, not when they
> are applied to each tag.  Am I wrong?
>
> --
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>
>


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Re: [Lift] jsonCall for clickable links

[David Pollak]

On Thu, Dec 10, 2009 at 12:13 PM, Nolan Darilek wrote:

> Hello, all. I'm sure this is an incredibly silly mistake on my part, but
> I've never really done AJAX until playing with Lift and am at a loss as
> to what's going wrong.
>
> I'm dusting off my old geolocation web app. My current goals are
> two-fold: set an initial position based on the browser, then generate
> links to update that position based on nearby points. Thus far I have
> the first goal working quite nicely. A snippet registers a javascript
> callback to call a Lift function, and my page is being updated
> correctly. Here's what I have:
>
>   def update(in:NodeSeq):NodeSeq = Script(JsRaw(
> """loc.onUpdate = function(lat, lon) {
>   """+SHtml.jsonCall(JsObj("lat" -> JsVar("lat"), "lon" ->
> JsVar("lon")), updatePosition _)._2.toJsCmd+""";
> }"""
>   ))
>
> The problem arises when I try calling my updatePosition function from an
> SHtml.a link, like so:
>
>   val nodeList = 
> {nodes.map(nd => {SHtml.a(
>   nd.name(None, None).getOrElse("Unnamed way"),
>   SHtml.jsonCall(
> JsObj("lat" -> nd.latitude, "lon" -> nd.longitude),
> updatePosition _
>   )._2
> )})}
> 
>

How about:

val nodes: List[xxx] = ...
val nodeList = nodes match {
  case Nil => No nodes
  case xs => {xs.map(nd => {SHtml.a(() => updatePosition(nd), Text(
ns.name(None, None) getOrElse "Unnamed")})}


>
> Ultimately, this function returns a JsCmd that performs two Replaces.
>
> First, that seems just a bit ugly to me, with the escape within an
> escape and all. Is there any way of eliminating that, short of placing
> the  into the template? Ideally this should handle the case where
> there are no nearby nodes, in which case there'd be a No nearby
> points of interest. instead of the enclosing , but I haven't
> coded that yet.
>
> Next, clicking on these links doesn't work, and I get a "parent is null"
> error from Firebug. I'm guessing that this new call is registered in the
> context of a new, blank document, and hence can't perform any of the
> Replace commands that work fine when this function is used in the
> context of a callback in an existing document? If so, do I need another
> Shtml function to make the jsonCall occur in the current DOM?
>
> Finally, any idea as to why the link names appear as quoted strings
> (I.e. "Unnamed way" instead of just Unnamed way)? I'm guessing it may
> have to do with the embedded escape, but I'm not entirely certain.
>
> Thanks in advance, this is such a helpful and patient community,
> especially with newbies like myself. :)
>
> --
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>
>


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[Lift] Ajax Forms and Binding

[Peter Robinett]

Hi all,

I think there is a simple answer to this, but I'm a little confused. I
want to update a bound element when my Ajax form is submitted. Here's
a simple version based upon what I gleaned from the wiki and the
mailing list:


  Display: 
  Input1: 
  Input2: 
  


class Test {
  var display = ""
  var input1 = ""
  var input2 = ""
  def form(xhtml: NodeSeq): NodeSeq = {
SHtml.ajaxForm(
  bind("test", xhtml,
"display" -> display,
"input1" -> SHtml.text(input1, input1 = _),
"input2" -> SHtml.text(input2, input2 = _),
"submit" -> SHtml.submit("Submit", () => {}) // empty method
since our hidden item will be called instead?
  ) ++
  SHtml.hidden(() => {
   display = input1 + input2
   // push an update to display here?
   ()
  })
)
  }
}

Am I on the right track? How do I actually get  to be
updated?

Thanks,
Peter

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Re: [Lift] More AJAX issues

[David Pollak]

On Fri, Dec 11, 2009 at 8:21 AM, Nolan Darilek wrote:

> Hello. Sorry for being the squeaky wheel on this one, but I'm really at
> a loss with no way to know if this is an issue with me, or with how I'm
> doing things in Lift. I've also been at this particular problem for a
> bit under a day now, and am running out of things to try and words to
> google.
>
> I think I figured out yesterday's issue--likely should have set onclick
> to an anonymous function returning false to prevent the browser from
> running it in a new DOM--but I've decided to chage my approach slightly.
> For various reasons, I'm now trying to use a  with an onBlur
> handler which submits the value, a JSON string, to a function via
> jsonCall. Here is my entire function, still with a few rough edges as I
> add in the various AJAX bits:
>
>   def updatePosition(pos:Any):JsCmd = pos match {
> case p:Map[String, Double] =>
>   GeoNode.nearestTo(p("lat"), p("lon")) match {
> case Some(node) =>
>   val nodes = node.within(0.001).remove(n => n.ways.size == 1)
>   val nodeList =  JsRaw("alert(\"Blur!\")")
>   }>


You're making things way too complex:




> {
> nodes.map(n =>
>  n.latitude, "lon" ->
> n.longitude)}>


value={JsObj("lat" -> n.latitude, "lon" -> n.longitude)}

does not do what you think it does.  You can't put a JSON object in the
attribute of an HTML element.

When the item is selected, what do you want to happen?


> {n.name(None, None).getOrElse("Unnamed node")}
> )
>   }
>   println(nodeList)
>   Replace("location", node.nearestWay match {
> case Some(w) => On {w.name.getOrElse("Unnamed way")}.
> case None => No nearby ways
>   }) &
>   Replace("nearby", nodeList)
> case _ => Replace("location", Thar be dragons! (You don't
> appear to be on any current maps.)
> }
> case _ =>
>   println(pos)
>   Alert("Unexpected geolocation API response from browser.")
>   }
>
> No matter what I try, I can't get the alert() to trigger when I tab off
> the . The println outputs what appears to be a sane value. I've
> inspected the element in Firebug, and everything appears as I'd expect.
> I've saved the entire page body with everything inserted, and everything
> looks fine there too. I've even done up a simple HTML document to make
> sure this behaves as I'd expect, and it does exactly what I think it
> should.
>
> So, what am I missing? Is embedded JS in a Replace call not run or
> something odd like that?
>
> --
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>
>


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Re: [Lift] Ajax Forms and Binding

[David Pollak]

On Fri, Dec 18, 2009 at 3:22 PM, Peter Robinett wrote:

> Hi all,
>
> I think there is a simple answer to this, but I'm a little confused. I
> want to update a bound element when my Ajax form is submitted. Here's
> a simple version based upon what I gleaned from the wiki and the
> mailing list:
>
> 
>  Display: 
>  Input1: 
>  Input2: 
>  
> 
>
> class Test {
>  var display = ""
>  var input1 = ""
>  var input2 = ""
>  def form(xhtml: NodeSeq): NodeSeq = {
>SHtml.ajaxForm(
>  bind("test", xhtml,
>"display" -> {display},
>"input1" -> SHtml.text(input1, input1 = _),
>"input2" -> SHtml.text(input2, input2 = _),
>"submit" -> SHtml.submit("Submit", () => {}) // empty method
> since our hidden item will be called instead?
>  ) ++
>  SHtml.hidden(() => {
>   display = input1 + input2
>

SetHtml("i_like_yaks", Text(display))

>  })
>)
>  }
> }
>
> Am I on the right track? How do I actually get  to be
> updated?
>
> Thanks,
> Peter
>
> --
>
> You received this message because you are subscribed to the Google Groups
> "Lift" group.
> To post to this group, send email to lift...@googlegroups.com.
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> liftweb+unsubscr...@googlegroups.com
> .
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> http://groups.google.com/group/liftweb?hl=en.
>
>
>


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Re: [Lift] JS event source in a server side handler

[David Pollak]

This code does what I think you want:

package com.liftcode.snippet

import _root_.scala.xml.{NodeSeq, Text}
import _root_.net.liftweb.util._
import _root_.net.liftweb.common._

import com.liftcode.lib._
import Helpers._
import _root_.net.liftweb.http._
import js._
import JsCmds._
import JE._

class HelloWorld {

  private def processAjaxCall(in: String): JsCmd =
  SetHtml("fruit_bat", The id is {in})

  def howdy(in: NodeSeq): NodeSeq =
  for {
i <- 1 to 20
  } yield Click me #{i}

}



On Sun, Nov 15, 2009 at 3:07 PM, Chris Lewis wrote:

>
> Hello list,
>
> Often in an AJAX handler I need to update something on the client side;
> usually a UI control that initiated the handler. The only way I know to
> handle this is to generate a DOM id in the snippet during a rendering
> call (like a bind() call in a flatMap over a dataset), look for that id
> in my handler, and then query up or down the DOM to find the
> corresponding UI component to tweak. It'd be nice if I could access the
> event source node in my handler. In a standard JS event handler, 'this'
> references the source element, and in some JS libraries like prototype,
> a method is added to the event object to access the source element.
>
> Given the current implementation, what's the best way to access the
> client side source of a UI event in a server-side handler? It seems like
> there'd be a cleaner way than what I'm doing. Thanks!
>
> --~--~-~--~~~---~--~~
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>


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Follow me: http://twitter.com/dpp
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[Lift] Re: Duplicate Keys Created by Schemefier

[Peter Robinett]

Sorry, dropped the ball on this one. Maybe change something in
MySqlDriver, perhaps primaryKeySetup? Unfortunately at that level you
don't know what columns have been defined. Anyway, I don't think this
is a pressing issue, so in the absence of having a solution to offer,
I'll leave it be.

Peter

On Dec 16, 12:55 pm, David Pollak 
wrote:
> On Wed, Dec 16, 2009 at 11:07 AM, Peter Robinett 
> wrote:
>
> > Fair enough, but isn't this still a non-optimal situation with the
> > MySQL database driver?
>
> What is your proposed change?
>
>
>
>
>
>
>
> > Peter
>
> > On Dec 15, 7:23 pm, David Pollak 
> > wrote:
> > > On Tue, Dec 15, 2009 at 5:46 PM, Peter Robinett  > >wrote:
>
> > > > My tables created by Schemefier have multiple keys for the primary key
> > > > when my Mapper model is declared like so: class myModel extends
> > > > LongKeyedMapper[myModel] with IdPK. There is naturally the primary key
> > > > but there is also a unique key on the column that simply duplicates
> > > > the functionality of the primary key.
>
> > > > Are other people seeing this? I've only looked on MySQL. This seems to
> > > > be because IdPK adds an id of type MappedLongIndex. Only the
> > > > longIndexColumnType of MySqlDriver has "UNIQUE KEY" in its definition.
> > > > Unique keys are great but, as I mentioned, if the column is also the
> > > > primary key the index is a duplication. Maybe this is something that
> > > > IdPK can disable when declaring the column? At least with MySQL
> > > > primary keys are guaranteed to be unique and InnoDB tables, which
> > > > Mapper uses, can have issues with long primary keys[1].
>
> > > > Should this be fixed? Or is the more helpful answer 'Don't use
> > > > MySQL'? ;-)
>
> > > I would use MySQL for a production site.
>
> > > If IdPK isn't doing what you want, then don't use it, just declare the
> > > primary key field manually.
>
> > > > Peter
>
> > > > [1]:http://dev.mysql.com/doc/refman/5.1/en/innodb-index-types.html
>
> > > > --
>
> > > > You received this message because you are subscribed to the Google
> > Groups
> > > > "Lift" group.
> > > > To post to this group, send email to lift...@googlegroups.com.
> > > > To unsubscribe from this group, send email to
> > > > liftweb+unsubscr...@googlegroups.com > > >  >
> >  > s.com>>
> > > > .
> > > > For more options, visit this group at
> > > >http://groups.google.com/group/liftweb?hl=en.
>
> > > --
> > > Lift, the simply functional web frameworkhttp://liftweb.net
> > > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > > Follow me:http://twitter.com/dpp
> > > Surf the harmonics
>
> > --
>
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> > .
> > For more options, visit this group at
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>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Surf the harmonics

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Re: [Lift] Re: How to redirect to a specify url when logged in successfully?

[David Pollak]

I did a override def homePage = "/all_users" and that's where I go after I
log in.

On Thu, Dec 3, 2009 at 5:44 AM, Neil.Lv  wrote:

>  I added this code in the User model, but it doesn't work yet.
>
>  This println method is never executed.
>
>  Maybe some configuration need to be set ?
>
> ###
> object User extends User with MetaMegaProtoUser[User] {
>  ...
>   override def loginFirst = If(
>loggedIn_? _,
>() => {
>  import net.liftweb.http.{RedirectWithState, RedirectState}
>   val uri = Full("/all_users")
> println(" xxx ")
>   RedirectWithState(
>loginPageURL,
>RedirectState( ()=>{loginRedirect.set(uri)})
>  )
>}
>  )
>   ...
> }
> ###
>
>
> Cheers,
>  Neil
>
>
> On Dec 1, 8:15 am, David Pollak  wrote:
> > On Sun, Nov 29, 2009 at 12:17 AM, Neil.Lv  wrote:
> > > Hi all,
> >
> > >   I want to redirecto to a specify URL like this "/all_users" when
> > > logged in successfully via the default link,
> > >http://localhost:8080/user_mgt/login
> >
> > >  Is there a help method (i dont't find it) to configure it?
> >
> > >  When i logged in successfully via /user_mgt/login link and redirect
> > > to the /all_users link not the /index page.
> >
> > In your User object (singleton):
> >   override def loginFirst = If(
> > loggedIn_? _,
> > () => {
> >   import net.liftweb.http.{RedirectWithState, RedirectState}
> >   val uri = "/all_users"
> >   RedirectWithState(
> > loginPageURL,
> > RedirectState( ()=>{loginRedirect.set(uri)})
> >   )
> > }
> >   )
> >
> >
> >
> >
> >
> > >  Thanks for any help.
> >
> > > Cheers,
> > >  Neil
> >
> > > --
> >
> > > You received this message because you are subscribed to the Google
> Groups
> > > "Lift" group.
> > > To post to this group, send email to lift...@googlegroups.com.
> > > To unsubscribe from this group, send email to
> > > liftweb+unsubscr...@googlegroups.com
> 
> >
> > > .
> > > For more options, visit this group at
> > >http://groups.google.com/group/liftweb?hl=en.
> >
> > --
> > Lift, the simply functional web frameworkhttp://liftweb.net
> > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > Follow me:http://twitter.com/dpp
> > Surf the harmonics
>
> --
>
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>
>
>


-- 
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Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
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Re: [Lift] Re: API-Doc generation help, pls

[David Pollak]

On Mon, Nov 16, 2009 at 12:33 PM, alux  wrote:

>
> Back to the first computer:
>
> I get the impression, its problems were result of bad connection. now
> it looks different. But 1. still wrong, 2. different then computer 2 :-
> (
>
> See below.
>
> Thank you.
>
> a.
>
> D:\lang\lift1.0\liftweb>mvn -v
> Maven version: 2.0.9
> Java version: 1.6.0_06
> OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows"
>

Please upgrade to Maven 2.2.0+


>
>
> Trying to build the docs.
>
> D:\lang\lift1.0\liftweb>mvn scala:doc
> [INFO] Scanning for projects...
> [INFO] Reactor build order:
> [INFO]   Lift Web Framework
> [INFO]   Lift Base Components
> [INFO]   Lift Common
> [INFO]   Lift Actor
> [INFO]   Lift Json
> [INFO]   Lift Util
> [INFO]   Lift WebKit
> [INFO]   Lift Modules
> [INFO]   Lift Widgets
> [INFO]   Lift Persistence Components
> [INFO]   Lift Mapper
> [INFO]   Lift JPA
> [INFO]   Lift Record
> [INFO]   Lift TestKit
> [INFO]   Lift OSGi
> [INFO]   Lift Wizard
> [INFO]   Lift Machine
> [INFO]   Lift Textile
> [INFO]   Lift Facebook
> [INFO]   Lift AMQP
> [INFO]   Lift XMPP
> [INFO]   Lift OpenID
> [INFO]   Lift OAuth
> [INFO]   Lift PayPal
> [INFO]   Lift JTA
> [INFO]   Lift Archetypes
> [INFO]   lift-archetype-blank
> [INFO]   lift-archetype-basic
> [INFO]   lift-archetype-jpa-basic
> [INFO]   lift-archetype-jpa-blank
> [INFO]   lift-archetype-jpa-blank-single
> [INFO]   Lift Core (full lift)
> [INFO]   Lift Sites
> [INFO]   Lift Example
> [INFO]   OSGi Examples for Lift
> [INFO]   OSGi Examples for Lift - Hello
> [INFO]   Skittr Example
> [INFO]   HelloLift example application
> [INFO]   HelloDarwin tutorial application
> [INFO]   JPA Demo Master
> [INFO]   JPADemo-spa
> [INFO]   JPADemo-web
> [INFO]   Lift Flot widget example
> [INFO]   HTTP Authentication example
> [INFO] Searching repository for plugin with prefix: 'scala'.
> Downloading:
> http://scala-tools.org/repo-releases/de/zeigermann/xml/xml-im-expor
> ter/1.1/xml-im-exporter-1.1.pom
> Downloading:
> http://scala-tools.org/repo-snapshots/de/zeigermann/xml/xml-im-expo
> rter/1.1/xml-im-exporter-1.1.pom
> Downloading:
> http://repo1.maven.org/maven2/de/zeigermann/xml/xml-im-exporter/1.1
> /xml-im-exporter-1.1.pom
> Downloading:
> http://scala-tools.org/repo-releases/de/zeigermann/xml/xml-im-expor
> ter/1.1/xml-im-exporter-1.1.jar
> Downloading:
> http://scala-tools.org/repo-snapshots/de/zeigermann/xml/xml-im-expo
> rter/1.1/xml-im-exporter-1.1.jar
> Downloading:
> http://repo1.maven.org/maven2/de/zeigermann/xml/xml-im-exporter/1.1
> /xml-im-exporter-1.1.jar
> WAGON_VERSION: 1.0-beta-2
> [INFO]
> 
> [INFO] Building Lift Web Framework
> [INFO]task-segment: [scala:doc]
> [INFO]
> 
> [INFO] [scala:doc]
> [INFO] Checking for multiple versions of scala
> [INFO]
> 
> [INFO] Building Lift Base Components
> [INFO]task-segment: [scala:doc]
> [INFO]
> 
> Downloading:
> http://scala-tools.org/repo-releases/javax/script/script-js/1.0/scr
> ipt-js-1.0.pom
> Downloading:
> http://scala-tools.org/repo-snapshots/javax/script/script-js/1.0/sc
> ript-js-1.0.pom
> Downloading:
> http://repo1.maven.org/maven2/javax/script/script-js/1.0/script-js-
> 1.0.pom
> Downloading:
> http://scala-tools.org/repo-releases/javax/script/js-engine/1.0/js-
> engine-1.0.pom
> Downloading:
> http://scala-tools.org/repo-snapshots/javax/script/js-engine/1.0/js
> -engine-1.0.pom
> Downloading:
> http://repo1.maven.org/maven2/javax/script/js-engine/1.0/js-engine-
> 1.0.pom
> [INFO] [scala:doc]
> [INFO] Checking for multiple versions of scala
> [WARNING] No source files found in D:\lang\lift1.0\liftweb\lift-base
> \src\main\sc
> ala
> [INFO]
> 
> [INFO] Building Lift Common
> [INFO]task-segment: [scala:doc]
> [INFO]
> 
> [INFO] [scala:doc]
> [INFO] Checking for multiple versions

[Lift] Re: Ajax Forms and Binding

[Peter Robinett]

Unfortunately there is no change. Firebug shows that the POST reply
was empty.

Peter

On Dec 18, 3:26 pm, David Pollak 
wrote:
> On Fri, Dec 18, 2009 at 3:22 PM, Peter Robinett 
> wrote:
>
>
>
>
>
> > Hi all,
>
> > I think there is a simple answer to this, but I'm a little confused. I
> > want to update a bound element when my Ajax form is submitted. Here's
> > a simple version based upon what I gleaned from the wiki and the
> > mailing list:
>
> > 
> >  Display: 
> >  Input1: 
> >  Input2: 
> >  
> > 
>
> > class Test {
> >  var display = ""
> >  var input1 = ""
> >  var input2 = ""
> >  def form(xhtml: NodeSeq): NodeSeq = {
> >    SHtml.ajaxForm(
> >      bind("test", xhtml,
> >        "display" -> {display},
> >        "input1" -> SHtml.text(input1, input1 = _),
> >        "input2" -> SHtml.text(input2, input2 = _),
> >        "submit" -> SHtml.submit("Submit", () => {}) // empty method
> > since our hidden item will be called instead?
> >      ) ++
> >      SHtml.hidden(() => {
> >       display = input1 + input2
>
> SetHtml("i_like_yaks", Text(display))
>
>
>
>
>
> >      })
> >    )
> >  }
> > }
>
> > Am I on the right track? How do I actually get  to be
> > updated?
>
> > Thanks,
> > Peter
>
> > --
>
> > You received this message because you are subscribed to the Google Groups
> > "Lift" group.
> > To post to this group, send email to lift...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > liftweb+unsubscr...@googlegroups.com > >
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/liftweb?hl=en.
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Surf the harmonics

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[Lift] Re: Ajax Forms and Binding

[Peter Robinett]

Sorry, spoke to soon. I got it, thanks.

On Dec 18, 4:27 pm, Peter Robinett  wrote:
> Unfortunately there is no change. Firebug shows that the POST reply
> was empty.
>
> Peter
>
> On Dec 18, 3:26 pm, David Pollak 
> wrote:
>
>
>
> > On Fri, Dec 18, 2009 at 3:22 PM, Peter Robinett 
> > wrote:
>
> > > Hi all,
>
> > > I think there is a simple answer to this, but I'm a little confused. I
> > > want to update a bound element when my Ajax form is submitted. Here's
> > > a simple version based upon what I gleaned from the wiki and the
> > > mailing list:
>
> > > 
> > >  Display: 
> > >  Input1: 
> > >  Input2: 
> > >  
> > > 
>
> > > class Test {
> > >  var display = ""
> > >  var input1 = ""
> > >  var input2 = ""
> > >  def form(xhtml: NodeSeq): NodeSeq = {
> > >    SHtml.ajaxForm(
> > >      bind("test", xhtml,
> > >        "display" -> {display},
> > >        "input1" -> SHtml.text(input1, input1 = _),
> > >        "input2" -> SHtml.text(input2, input2 = _),
> > >        "submit" -> SHtml.submit("Submit", () => {}) // empty method
> > > since our hidden item will be called instead?
> > >      ) ++
> > >      SHtml.hidden(() => {
> > >       display = input1 + input2
>
> > SetHtml("i_like_yaks", Text(display))
>
> > >      })
> > >    )
> > >  }
> > > }
>
> > > Am I on the right track? How do I actually get  to be
> > > updated?
>
> > > Thanks,
> > > Peter
>
> > > --
>
> > > You received this message because you are subscribed to the Google Groups
> > > "Lift" group.
> > > To post to this group, send email to lift...@googlegroups.com.
> > > To unsubscribe from this group, send email to
> > > liftweb+unsubscr...@googlegroups.com > >  >
> > > .
> > > For more options, visit this group at
> > >http://groups.google.com/group/liftweb?hl=en.
>
> > --
> > Lift, the simply functional web frameworkhttp://liftweb.net
> > Beginning Scalahttp://www.apress.com/book/view/1430219890
> > Follow me:http://twitter.com/dpp
> > Surf the harmonics

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[Lift] Re: DB connection fail after upgrade from 1.1M7 to 1.1M8

[Jarod Liu]

I did "mvn clean" but dosn't help. And I try implement a custom
DBVender, found that the newConnection() even not being call.

  def boot {
LiftRules.formatDate = formatDate

  DB.defineConnectionManager(DefaultConnectionIdentifier,
DBVendor)

LiftRules.addToPackages("hello")

LiftRules.setSiteMap(SiteMap(MenuInfo.menu: _*))

LiftRules.early.append{ _.setCharacterEncoding("UTF-8") }
  }


  object DBVendor extends ConnectionManager {

def newConnection(name: ConnectionIdentifier): Box[Connection] = {
  try {
Class.forName(Props.get("db.driver").openOr
("com.mysql.jdbc.Driver"))
println(Props.props)
val c = Full(DriverManager.getConnection(
Props.get("db.url").openOr("jdbc:mysql://localhost/mydb?
autoReconnectForPools=true"),
Props.get("db.user").openOr("root"), Props.get
("db.password").openOr("")))
println("")
println(c)
c
  } catch {
case e: Exception => e.printStackTrace; Empty
  }
}

def releaseConnection(conn: Connection) {
  conn.close
}
  }


On Dec 18, 8:05 am, David Pollak 
wrote:
> Please try doing a "mvn clean" and then retry your application.
>
> I have seen no problems with the dozen+ Lift apps I work with related to
> connections not working between M7 and M8.
>
>
>
>
>
> On Thu, Dec 17, 2009 at 5:59 AM, Jarod Liu  wrote:
> > The same code works fine in 1.1M7. Anyone know what causes the
> > problem. Or maybe a bug in 1.1M8?
>
> > boot.scala:
> >      DB.defineConnectionManager(DefaultConnectionIdentifier,
> >                                 new StandardDBVendor
> > ("com.mysql.jdbc.Driver",
> >                                                      "jdbc:mysql://
> > localhost/mydb?autoReconnectForPools=true",
> >                                                      "root", ""))
>
> > the error message:
>
> >    Looking for Connection Identifier ConnectionIdentifier(lift) but
> > failed to find either a JNDI data source with the name lift or a lift
> > connection manager with the correct nameCaused by: > h3>java.lang.NullPointerException: Looking for Connection
> > Identifier ConnectionIdentifier(lift) but failed to find either a JNDI
> > data source with the name lift or a lift connection manager with the
> > correct name
> >        at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala:
> > 97)
> >        at net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala:
> > 97)
> >        at net.liftweb.common.EmptyBox.openOr(Box.scala:372)
> >        at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96)
> >        at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96)
> >        at net.liftweb.common.EmptyBox.openOr(Box.scala:372)
> >        at net.liftweb.mapper.DB$.newConnection(DB.scala:90)
> >        at net.liftweb.mapper.DB$.getConnection(DB.scala:186)
> >        at net.liftweb.mapper.DB$.use(DB.scala:446)
> >        at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1
> > (DB.scala:160)
> >        at
> > net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162)
> >        at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91)
> >        at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143)
> >        at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146)
> >        at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912)
> >        at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit
> > $1.apply(S.scala:1112)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala:
> > )
> >        at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply
> > $31.apply(S.scala:1133)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala:
> > 1132)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > $anonfun$apply$28.apply(S.scala:1130)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at
> > net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1.apply
> > (S.scala:1129)
> >        at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> >        at net.liftweb.http.S$.net$liftweb$http$S$$_innerInit(S.scala:1128)
> >        at net.liftweb.http.S$$anonfun$_init$1$$anonfun$apply$38$$anonfun
> > $apply$39$$anonfun$apply$40$$anonfun$apply$41$$anonfun$apply$42.apply
> > (S

Re: [Lift] Re: DB connection fail after upgrade from 1.1M7 to 1.1M8

[David Pollak]

If you want to tar up your project (please remove the target directory) and
send it to me privately, I'll look into it.

On Fri, Dec 18, 2009 at 4:48 PM, Jarod Liu  wrote:

> I did "mvn clean" but dosn't help. And I try implement a custom
> DBVender, found that the newConnection() even not being call.
>
>  def boot {
>LiftRules.formatDate = formatDate
>
>  DB.defineConnectionManager(DefaultConnectionIdentifier,
> DBVendor)
>
>LiftRules.addToPackages("hello")
>
>LiftRules.setSiteMap(SiteMap(MenuInfo.menu: _*))
>
>LiftRules.early.append{ _.setCharacterEncoding("UTF-8") }
>  }
>
>
>  object DBVendor extends ConnectionManager {
>
>def newConnection(name: ConnectionIdentifier): Box[Connection] = {
>  try {
>Class.forName(Props.get("db.driver").openOr
> ("com.mysql.jdbc.Driver"))
>println(Props.props)
>val c = Full(DriverManager.getConnection(
>Props.get("db.url").openOr("jdbc:mysql://localhost/mydb?
> autoReconnectForPools=true"),
>Props.get("db.user").openOr("root"), Props.get
> ("db.password").openOr("")))
>println("")
>println(c)
>c
>  } catch {
>case e: Exception => e.printStackTrace; Empty
>  }
>}
>
>def releaseConnection(conn: Connection) {
>  conn.close
>}
>  }
>
>
> On Dec 18, 8:05 am, David Pollak 
> wrote:
> > Please try doing a "mvn clean" and then retry your application.
> >
> > I have seen no problems with the dozen+ Lift apps I work with related to
> > connections not working between M7 and M8.
> >
> >
> >
> >
> >
> > On Thu, Dec 17, 2009 at 5:59 AM, Jarod Liu  wrote:
> > > The same code works fine in 1.1M7. Anyone know what causes the
> > > problem. Or maybe a bug in 1.1M8?
> >
> > > boot.scala:
> > >  DB.defineConnectionManager(DefaultConnectionIdentifier,
> > > new StandardDBVendor
> > > ("com.mysql.jdbc.Driver",
> > >  "jdbc:mysql://
> > > localhost/mydb?autoReconnectForPools=true",
> > >  "root", ""))
> >
> > > the error message:
> >
> > >Looking for Connection Identifier ConnectionIdentifier(lift) but
> > > failed to find either a JNDI data source with the name lift or a lift
> > > connection manager with the correct nameCaused by: > > h3>java.lang.NullPointerException: Looking for Connection
> > > Identifier ConnectionIdentifier(lift) but failed to find either a JNDI
> > > data source with the name lift or a lift connection manager with the
> > > correct name
> > >at
> net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala:
> > > 97)
> > >at
> net.liftweb.mapper.DB$$anonfun$2$$anonfun$apply$8.apply(DB.scala:
> > > 97)
> > >at net.liftweb.common.EmptyBox.openOr(Box.scala:372)
> > >at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96)
> > >at net.liftweb.mapper.DB$$anonfun$2.apply(DB.scala:96)
> > >at net.liftweb.common.EmptyBox.openOr(Box.scala:372)
> > >at net.liftweb.mapper.DB$.newConnection(DB.scala:90)
> > >at net.liftweb.mapper.DB$.getConnection(DB.scala:186)
> > >at net.liftweb.mapper.DB$.use(DB.scala:446)
> > >at net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.recurseMe$1
> > > (DB.scala:160)
> > >at
> > > net.liftweb.mapper.DB$$anon$1$$anonfun$apply$9.apply(DB.scala:162)
> > >at net.liftweb.util.DynoVar$class.run(ThreadGlobal.scala:91)
> > >at net.liftweb.mapper.DB$$anon$1$DepthCnt$.run(DB.scala:143)
> > >at net.liftweb.mapper.DB$$anon$1.apply(DB.scala:146)
> > >at net.liftweb.http.S$.net$liftweb$http$S$$doAround(S.scala:912)
> > >at
> net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_nest2InnerInit
> > > $1.apply(S.scala:1112)
> > >at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> > >at
> net.liftweb.http.S$.net$liftweb$http$S$$_nest2InnerInit(S.scala:
> > > )
> > >at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > > $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30$$anonfun$apply
> > > $31.apply(S.scala:1133)
> > >at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> > >at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > > $anonfun$apply$28$$anonfun$apply$29$$anonfun$apply$30.apply(S.scala:
> > > 1132)
> > >at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> > >at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > > $anonfun$apply$28$$anonfun$apply$29.apply(S.scala:1131)
> > >at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> > >at net.liftweb.http.S$$anonfun$net$liftweb$http$S$$_innerInit$1$
> > > $anonfun$apply$28.apply(S.scala:1130)
> > >at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:67)
> > >at
> > > net.liftweb.http.S$$an

Re: [Lift] Did the jQuery Datepicker ever get integrated into Lift?

[Xuefeng Wu]

I think it's not yet.
It's very useful that lift integrate all widget from http://jqueryui.com/ .
Do anyone have interesting in doing this?

On Fri, Dec 18, 2009 at 4:49 AM, Peter Robinett wrote:

> I see there was some discussion about it over a year ago[1], but I
> don't think it's be done. Is just dropping in the Javascript code the
> best way to go? If I do that, how do I bind to the form field(s) in my
> snippet code?
>
> Thanks!
>
> Peter
>
> [1]:
> http://groups.google.com/group/liftweb/browse_thread/thread/c8f3c39208770790/66e5b9cbf0ad3ad5
>
> --
>
> You received this message because you are subscribed to the Google Groups
> "Lift" group.
> To post to this group, send email to lift...@googlegroups.com.
> To unsubscribe from this group, send email to
> liftweb+unsubscr...@googlegroups.com
> .
> For more options, visit this group at
> http://groups.google.com/group/liftweb?hl=en.
>
>
>


-- 
Scala中文社区:  http://groups.google.com/group/scalacn

--

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[Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8

[Jarod Liu]

*
the attached package is the sources.  It just the lift-archetype-basic
project with changes to use mysql. without the changes work fine using h2
DB.

On Dec 19, 8:51 am, David Pollak  wrote:
> If you want to tar up your project (please remove the target directory)
and
> send it to me privately, I'll look into it.
>
*

--

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liftdemo.tar.bz2
Description: BZip2 compressed data

Re: [Lift] DB connection fail after upgrade from 1.1M7 to 1.1M8

[David Pollak]

I ran your app and when the DB connector was created, I got the following
exception:

2009-12-18 20:20:38.641:INFO::No Transaction manager found - if your webapp
requires one, please configure one.
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database
'test'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.Util.getInstance(Util.java:381)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3558)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3490)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3996)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:781)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
at
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:284)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at net.liftweb.mapper.StandardDBVendor.createOne(DB.scala:870)
at net.liftweb.mapper.ProtoDBVendor$class.newConnection(DB.scala:915)
at net.liftweb.mapper.StandardDBVendor.newConnection(DB.scala:861)
at net.liftweb.mapper.DB$$anonfun$1$$anonfun$apply$1.apply(DB.scala:90)
at net.liftweb.mapper.DB$$anonfun$1$$anonfun$apply$1.apply(DB.scala:90)
at net.liftweb.common.EmptyBox.or(Box.scala:374)
at net.liftweb.mapper.DB$$anonfun$1.apply(DB.scala:90)
at net.liftweb.mapper.DB$$anonfun$1.apply(DB.scala:90)
at net.liftweb.common.Full.flatMap(Box.scala:332)
at net.liftweb.mapper.DB$.newConnection(DB.scala:90)
at net.liftweb.mapper.DB$.getConnection(DB.scala:186)
at net.liftweb.mapper.DB$.use(DB.scala:446)
at net.liftweb.mapper.Schemifier$.schemify(Schemifier.scala:54)
at net.liftweb.mapper.Schemifier$.schemify(Schemifier.scala:37)
at bootstrap.liftweb.Boot.boot(Boot.scala:29)
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:597)
at
net.liftweb.util.ClassHelpers$$anonfun$createInvoker$1.apply(ClassHelpers.scala:409)
at
net.liftweb.util.ClassHelpers$$anonfun$createInvoker$1.apply(ClassHelpers.scala:407)
at
net.liftweb.http.DefaultBootstrap$$anonfun$boot$1.apply(LiftRules.scala:1261)
at
net.liftweb.http.DefaultBootstrap$$anonfun$boot$1.apply(LiftRules.scala:1261)
at net.liftweb.common.Full.map(Box.scala:330)
at net.liftweb.http.DefaultBootstrap$.boot(LiftRules.scala:1261)
at
net.liftweb.http.provider.HTTPProvider$class.bootLift(HTTPProvider.scala:70)
at net.liftweb.http.LiftFilter.bootLift(LiftServlet.scala:523)
at net.liftweb.http.provider.servlet.ServletFilterProvider$class.init(Se

*The problem is very simply that your database is rejecting the connection.
 I changed the connection to run against H2 as I didn't have MySQL installed
on my machine and everything ran fine.*
*
*
*In the future, please check to make sure you can actually connect to the
RDBMS and include *all* the exceptions generated from your app in postings.*
*
*

On Fri, Dec 18, 2009 at 7:22 PM, Jarod Liu  wrote:

> *
> the attached package is the sources.  It just the lift-archetype-basic
> project with changes to use mysql. without the changes work fine using h2
> DB.
>
> On Dec 19, 8:51 am, David Pollak  wrote:
> > If you want to tar up your project (please remove the target directory)
> and
> > send it to me privately, I'll look into it.
> >
> *
>
> --
> You received this message because you are subscribed to the Google Groups
> "Lift" group.
> To post to this group, send email to lift...@googlegroups.com.
> To unsubscribe from this group, send email to
> liftweb+unsubscr...@googlegroups.com
> .
> For more options, visit this group at
> http://groups.google.com/group/liftweb?hl=en.
>



-- 
Lift, the simply functional web framework http://l

[Lift] Re: DB connection fail after upgrade from 1.1M7 to 1.1M8

[Jarod Liu]

I can 100% sure I can connect to the mysql db 'test' with 'root'
username and empty password. Do you have mysql installed? A default
mysql installation should have a DB call 'test'

the error message I got are different:

2009-12-19 12:41:05.486:INFO::No Transaction manager found - if your
webapp requires one, please configure one.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:
Communications link failure

The last packet sent successfully to the server was 0 milliseconds
ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance
(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance
(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.SQLError.createCommunicationsException
(SQLError.java:1074)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:
2214)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:781)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance
(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance
(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
at com.mysql.jdbc.NonRegisteringDriver.connect
(NonRegisteringDriver.java:284)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at net.liftweb.mapper.StandardDBVendor.createOne(DB.scala:870)
at net.liftweb.mapper.ProtoDBVendor$class.newConnection(DB.scala:915)
at net.liftweb.mapper.StandardDBVendor.newConnection(DB.scala:861)
at net.liftweb.mapper.DB$$anonfun$1$$anonfun$apply$1.apply(DB.scala:
90)
at net.liftweb.mapper.DB$$anonfun$1$$anonfun$apply$1.apply(DB.scala:
90)
at net.liftweb.common.EmptyBox.or(Box.scala:374)
at net.liftweb.mapper.DB$$anonfun$1.apply(DB.scala:90)
at net.liftweb.mapper.DB$$anonfun$1.apply(DB.scala:90)
at net.liftweb.common.Full.flatMap(Box.scala:332)
at net.liftweb.mapper.DB$.newConnection(DB.scala:90)
at net.liftweb.mapper.DB$.getConnection(DB.scala:186)
at net.liftweb.mapper.DB$.use(DB.scala:446)
at net.liftweb.mapper.Schemifier$.schemify(Schemifier.scala:54)
at net.liftweb.mapper.Schemifier$.schemify(Schemifier.scala:37)
at bootstrap.liftweb.Boot.boot(Boot.scala:29)
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:597)
at net.liftweb.util.ClassHelpers$$anonfun$createInvoker$1.apply
(ClassHelpers.scala:409)
at net.liftweb.util.ClassHelpers$$anonfun$createInvoker$1.apply
(ClassHelpers.scala:407)
at net.liftweb.http.DefaultBootstrap$$anonfun$boot$1.apply
(LiftRules.scala:1261)
at net.liftweb.http.DefaultBootstrap$$anonfun$boot$1.apply
(LiftRules.scala:1261)
at net.liftweb.common.Full.map(Box.scala:330)
at net.liftweb.http.DefaultBootstrap$.boot(LiftRules.scala:1261)
at net.liftweb.http.provider.HTTPProvider$class.bootLift
(HTTPProvider.scala:70)
at net.liftweb.http.LiftFilter.bootLift(LiftServlet.scala:523)
at net.liftweb.http.provider.servlet.ServletFilterProvider$class.init
(ServletFilterProvider.scala:20)
at net.liftweb.http.LiftFilter.init(LiftServlet.scala:523)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:
97)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize
(ServletHandler.java:662)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
467)
at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart
(Jetty6PluginWebAppContext.java:115)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:50)
at org.mortbay.je

[Lift] re: user_id has value, but get constraint exception of it being null, using JPA and Lift 1.1

[James Black]

Hello,
I have struggled with this for a few hours and hopefully someone can
see what I am doing wrong.

Basically, I insert into users, I then select the user, I then set
that in my address and try to insert and get an error that the user_id
cannot be null, but it has a value.

I am including the two entities involved at the bottom, and the part
of the test that is executed. The last line in the test is where the
error is thrown.


Hibernate: insert into users (firstName, lastName, username, id)
values (?, ?, ?, ?)
Hibernate: select user0_.id as id105_, user0_.firstName as
firstName105_, user0_.lastName as lastName105_, user0_.username as
username105_ from users user0_ where user0_.username=?
Found User /* loaded from the database */
id: 11403264
firstName: Test lastName: User
username: testuser_resume

Address being persisted /*, user.id has a value */:
id: 0
addressLineOne: Some street address
user:
id: 11403264
firstName: Test lastName: User
username: testuser_resume
Hibernate: insert into address (addressLineOne, city, state, user_fk,
zipCode, id) values (?, ?, ?, ?, ?, ?)
13800 [main] WARN org.hibernate.util.JDBCExceptionReporter - SQL
Error: 2, SQLState: 23502
13800 [main] ERROR org.hibernate.util.JDBCExceptionReporter - Column
'USER_ID'  cannot accept a NULL value.
13800 [main] ERROR
org.hibernate.event.def.AbstractFlushingEventListener - Could not
synchronize database state with session
org.hibernate.exception.ConstraintViolationException: could not
insert: [jblack.resumeapp.lift.model.Address]
at org.hibernate.exception.SQLStateConverter.convert
(SQLStateConverter.java:94)
at org.hibernate.exception.JDBCExceptionHelper.convert
(JDBCExceptionHelper.java:66)
at org.hibernate.persister.entity.AbstractEntityPersister.insert
(AbstractEntityPersister.java:2295)
at org.hibernate.persister.entity.AbstractEntityPersister.insert
(AbstractEntityPersister.java:2688)
at org.hibernate.action.EntityInsertAction.execute
(EntityInsertAction.java:79)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:
263)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:
167)
at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions
(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush
(DefaultFlushEventListener.java:50)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:365)
at org.hibernate.transaction.JDBCTransaction.commit
(JDBCTransaction.java:137)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:54)
at jblack.resumeapp.lift.model.TestJPAWeb.save_resume
(TestJPAWeb.scala:76)
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:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall
(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run
(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively
(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate
(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate
(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate
(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild
(BlockJUnit4ClassRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.runChild
(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate
(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate
(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.apache.maven.surefire.junit4.JUnit4TestSet.execute
(JUnit4TestSet.java:62)
at
org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet
(AbstractDirectoryTestSuite.java:140)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute
(AbstractDirectoryTestSuite.java:127)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
   

[Lift] Re: How can i update and insert record into database via Raw sql in Lift?

[Neil.Lv]

 It works now.

 I use the same executeUpdate method, and it can insert into the db.

 Thanks Marcin,

Cheers,
  Neil


On Dec 19, 1:29 am, "Neil.Lv"  wrote:
> Hi Marcin,
>
>    Thank you very much! The update statement works now!
>
>    There is a question about the insert statement, how can i use the
> prepareStatement ?
>
> ###
>   "INSERT INTO blogs click_counts=100 WHERE id=1"
> ###
>
>    I'm not familiar with it,
>
>    Thanks very much!
>
>    :)
>
> Cheers,
>   Neil
>
> On Dec 18, 11:13 pm, Marcin Jurczuk  wrote:
>
> > Hi,
>
> > You have few options:
> > - DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
> > id=1")
> > - DBprepareStatement("UPDATE blogs set click_counts=click_counts+1
> > WHERE id=?",yourDBConnection) {
> > stmt =>
> > stmt.setLong(1,1)
> > stmt.executeUpdate()}
>
> > Where first 1 in setLong is position in prepared statment where you
> > will put second value. Since You have only one ? it always will be
> > "1".
>
> > WARNING:
> > runQuery is vulnerable to SQL injection in many situations (mostly
> > where string is passed to query)
>
> > Marcin,
>
> > On 18 Gru, 15:45, "Neil.Lv"  wrote:
>
> > > Hi all,
>
> > >    How can i update and insert record into database via Raw sql in
> > > Lift?
>
> > >    I write some code but it failed, here is :
>
> > > ### In the model
>
> > >   def updateClickCountsById(id: Long) =
> > >     DB.runQuery("UPDATE blogs set click_counts=click_counts+1 WHERE
> > > id=1")
>
> > >   def insertRecord() =
> > >     DB.runQuery("INSERT INTO blogs click_counts=100 WHERE id=1")
>
> > > ###
>
> > >    This two method doesn't work, so how can i update and insert via
> > > raw SQL in the lift with Mapper?
>
> > >    Thanks for any suggestion !
>
> > > Cheers,
> > >   Neil

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Re: [Lift] Re: DB connection fail after upgrade from 1.1M7 to 1.1M8

[James Black]

It would seem that this error is the main problem that has to be solved:
Caused by: java.net.ConnectException: Connection refused
   at java.net.PlainSocketImpl.
socketConnect(Native Method)



This should have nothing to do with the web framework, as it seems that the
driver just can't connect to the database.

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