On Wed, Jul 29, 2009 at 5:54 PM, fbettag <fr...@bett.ag> wrote:
>
> Now the last and final question: how would i go about and add this to
> the trait:
>
> object test extends MappedBoolean(this) ?
You can't add this to a MetaMapper trait, it must be part of a trait that's
mixed into the Mapper.
Look for the implementation of IdPK and you'll have the right pattern.
>
>
> i tried:
>
> private val thisTyped = this.asInstanceOf[A]
> object published extends MappedBoolean(thisTyped)
>
> and just "this" and "self". Any ideas?
>
> On 30 Jul., 02:46, fbettag <fr...@bett.ag> wrote:
> > And the final version:
> >
> > trait Stamped[A <: LongKeyedMapper[A] with IdPK] extends
> > KeyedMetaMapper[Long, A] {
> > self: A with MetaMapper[A] with KeyedMapper[Long, A] =>
> >
> > override def afterSave = (createLog(_: A, "create")) ::
> > super.afterSave
> > override def afterUpdate = (createLog(_: A, "update")) ::
> > super.afterUpdate
> > override def afterDelete = (createLog(_: A, "delete")) ::
> > super.afterDelete
> >
> > private def createLog(obj: A, action: String) = {
> > val log = new ActionLog
> > log.action(action).klass(obj.getClass.toString).record(
> obj.id).save
> > }
> >
> > }
> >
> > On 30 Jul., 02:19, fbettag <fr...@bett.ag> wrote:
> >
> > > Okay i got this so far, only one tiny thing i can't get to work now:
> >
> > > trait Stamped[A <: LongKeyedMapper[A]] extends KeyedMetaMapper[Long,
> > > A] {
> > > self: A with MetaMapper[A] with KeyedMapper[Long, A] =>
> >
> > > private val thisTyped = this.asInstanceOf[MapperType]
> >
> > > override def afterSave = createSaveLog _ :: super.afterSave
> > > override def afterUpdate = createUpdateLog _ :: super.afterSave
> > > override def afterDelete = createDeleteLog _ :: super.afterSave
> >
> > > private def createSaveLog(obj: A) = createLog(obj, "create")
> > > private def createUpdateLog(obj: A) = createLog(obj, "update")
> > > private def createDeleteLog(obj: A) = createLog(obj, "delete")
> >
> > > private def createLog(obj: A, action: String) {
> > > val log = new ActionLog
> > > log.action(action).klass(obj.getClass.toString).record(
> obj.id).save
> > > }
> >
> > > }
> >
> > > The problem relies in the last method called. log.action... at obj.id.
> > > Where do i have to define that A (obj) is with IdPK?
> > > After that this should be working.
> >
> > > Ah one scala syntax question. why can't i call createLog(_, "create")
> > > at the List?
> >
> > > On 30 Jul., 01:22, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> >
> > > > On Wed, Jul 29, 2009 at 4:21 PM, fbettag <fr...@bett.ag> wrote:
> >
> > > > > Btw. the docs for KeyedMapper don't work..
> >
> > > > >
> http://scala-tools.org/scaladocs/liftweb/1.0/net/liftweb/mapper/Keyed...
> > > > > when i click on KeyType or OwnerType it gives me a 404..
> >
> > > > This is a limitation of vscaladoc... sorry.
> >
> > > > > On 30 Jul., 00:55, David Pollak <feeder.of.the.be...@gmail.com>
> wrote:
> > > > > > It's not pretty, but:
> >
> > > > > > trait MyLogger[A <: KeyedMapper[K, A], K] extends
> KeyedMetaMapper[K,A] {
> > > > > > self: A with MetaMapper[A] with KeyedMapper[K, A] =>
> >
> > > > > > override def afterSave = doSomething _ :: super.afterSave
> >
> > > > > > private def doSomething(in: A) {
> > > > > > println("Got "+in)
> > > > > > }
> >
> > > > > > }
> > > > > > On Wed, Jul 29, 2009 at 3:35 PM, fbettag <fr...@bett.ag> wrote:
> >
> > > > > > > Hm. i changed it to this:
> > > > > > > trait Stamped[OwnerType <: Mapper[OwnerType] with IdPK] {
> > > > > > > self: MetaMapper[OwnerType] =>
> >
> > > > > > > private val thisTyped = this.asInstanceOf[MapperType]
> >
> > > > > > > override def afterSave: List[Any] = {
> > > > > > > createActionLog("create",
> this.getClass.toString,
> > > > > > > thisTyped.id)
> > > > > > > return List(None)
> > > > > > > }
> >
> > > > > > > def afterUpdate: List[Any] = {
> > > > > > > createActionLog("update",
> this.getClass.toString,
> > > > > > > thisTyped.id)
> > > > > > > return List(None)
> > > > > > > }
> >
> > > > > > > def beforeDelete: List[Any] = {
> > > > > > > createActionLog("delete",
> this.getClass.toString,
> > > > > > > thisTyped.id)
> > > > > > > return List(None)
> > > > > > > }
> >
> > > > > > > private def createActionLog(action: String, klass:
> String, obj:
> > > > > > > Long)
> > > > > > > {
> > > > > > > val log = new ActionLog
> > > > > > > log.action(action).klass(klass).record(obj).save
> > > > > > > }
> >
> > > > > > > }
> >
> > > > > > > and i extend the object now and not the class. still i get
> these:
> >
> > > > > > > src/main/scala/ag/bett/lift/cms/lib/Stamped.scala:12: error:
> method
> > > > > > > afterSave overrides nothing
> > > > > > > override def afterSave: List[Any] = {
> > > > > > > ^
> > > > > > > method afterSave in trait Stamped of type => List[Any] needs
> > > > > > > `override' modifier
> > > > > > > object Content extends Content with
> LongKeyedMetaMapper[Content] with
> > > > > > > Stamped[Content] {
> > > > > > > ^
> >
> > > > > > > This is voodoo again :(
> >
> > > > > > > On 29 Jul., 22:55, David Pollak <feeder.of.the.be...@gmail.com>
> wrote:
> > > > > > > > trait Foo[A <: Mapper[A]] {
> > > > > > > > self: MetaMapper[A] =>
> >
> > > > > > > > }
> > > > > > > > On Wed, Jul 29, 2009 at 1:38 PM, fbettag <fr...@bett.ag>
> wrote:
> >
> > > > > > > > > Yes thanks, it gives me an idea of the issue which i now
> see.
> > > > > > > > > Could you provide a very simple example on how you would
> make the
> > > > > Meta-
> > > > > > > > > Mixin?
> > > > > > > > > That would be very good
> >
> > > > > > > > > best regards
> >
> > > > > > > > > On 29 Jul., 21:55, David Pollak <
> feeder.of.the.be...@gmail.com>
> > > > > wrote:
> > > > > > > > > > On Tue, Jul 28, 2009 at 5:12 PM, fbettag <fr...@bett.ag>
> wrote:
> >
> > > > > > > > > > > So far it looks like this:
> >
> > > > > > > > > > > trait Stamped[OwnerType <: Stamped[OwnerType] with
> > > > > LongKeyedMapper
> > > > > > > > > > > [OwnerType] with IdPK] {
> > > > > > > > > > > this: OwnerType =>
> >
> > > > > > > > > > > private val thisTyped =
> this.asInstanceOf[MapperType]
> >
> > > > > > > > > > > override def afterSave {
> > > > > > > > > > > createActionLog("create",
> > > > > this.getClass.toString,
> > > > > > > > > this.id)
> > > > > > > > > > > }
> >
> > > > > > > > > > There's no afterSave method on Mapper... that method is
> on
> > > > > > > MetaMapper.
> >
> > > > > > > > > > You need to split your trait into two pieces... one that
> will be
> > > > > > > mixed
> > > > > > > > > into
> > > > > > > > > > the model instances and one that'll be mixed into the
> Meta model
> > > > > > > > > singleton
> > > > > > > > > > (or perhaps just one mixed into the Meta).
> >
> > > > > > > > > > In terms of the afterSave (and other before and after
> stuff)
> > > > > method
> > > > > > > on
> > > > > > > > > > MetaMapper, that method returns a List of functions that
> take the
> > > > > > > > > instance
> > > > > > > > > > as a model that's being saved and does something. I've
> changed
> > > > > the
> > > > > > > > > > signature to List[A => Unit] rather than List[A => Any]
> to avoid
> > > > > > > > > confusion
> > > > > > > > > > about the fact that the functions are not meant to return
> > > > > anything.
> >
> > > > > > > > > > Does this help?
> >
> > > > > > > > --
> > > > > > > > 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
> >
> > > > > > --
> > > > > > 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
> >
> > > > --
> > > > 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
> >
>
--
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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