[Lift] Re: Stamped Trait question
Thank you very much. It works great now :)
On 30 Jul., 04:43, David Pollak feeder.of.the.be...@gmail.com wrote:
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
[Lift] Re: Stamped Trait question
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?
def afterUpdate {
createActionLog(update, this.getClass.toString, this.id)
}
def beforeDelete {
createActionLog(delete, this.getClass.toString, this.id)
}
private def createActionLog(action: String, klass: String, obj:
Long)
{
val log = new ActionLog
log.action(action).klass(klass).record(obj).save
}
}
Now i ensured that the OwnerType class has a LongKeyedMapper with
IdPK.
The final problem is:
afterSave is supposed to return a List(Any) meaning List(OwnerType)..
how can i find out what the OwnerType class is?
And what is it supposed to return? Simply the unmodified record in my
case?
best regards
On 27 Jul., 05:07, fbettag fr...@bett.ag wrote:
Hey guys,
i#ve gotten this together, to get a log of who's editing what. The
trait will give you the idea:
import java.util.Date
import model._
import net.liftweb.mapper._
trait Stamped[OwnerType : Stamped[OwnerType]] extends LongKeyedMapper
[OwnerType] with IdPK {
this: OwnerType =
private val thisTyped = this.asInstanceOf[MapperType]
def afterSave {
createActionLog(create, this.getClass.toString,
this.id)
}
def afterUpdate {
createActionLog(update, this.getClass.toString,
this.id)
}
def beforeDelete {
createActionLog(delete, this.getClass.toString,
this.id)
}
private def createActionLog(action: String, klass: String, obj:
Long)
{
val log = new ActionLog
log.action(action).klass(klass).record(obj).save
}
}
On every action i create a log. It's better than having only createdAt/
On which only idicates only the last change, but to have a history.
My only problem is, the extends LongKeyedMapper is the only way to
make it compile with this.id as last parameter of createActionLog().
The question is, how can i find out if the supplied OwnerType Model is
extended with LongKeyedMapper?
Is it possible to supply some kinda subclass check on the supplied
OwnerType.
Btw, i forgot what : does (like in Stamped[OwnerType : Stamped
[OwnerType]]).
any help would be great!
--
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: Stamped Trait question
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?
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[Lift] Re: Stamped Trait question
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 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: Stamped Trait question
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
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[Lift] Re: Stamped Trait question
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 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: Stamped Trait question
how would i use that trait?
with MyLogger[MyModel, MyModel] ? What is A and what is K supposed to
be?
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
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[Lift] Re: Stamped Trait question
Btw. the docs for KeyedMapper don't work..
http://scala-tools.org/scaladocs/liftweb/1.0/net/liftweb/mapper/KeyedMapper.html
when i click on KeyType or OwnerType it gives me a 404..
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
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[Lift] Re: Stamped Trait question
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/KeyedMapper.html
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 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
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Lift group.
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liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
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-~--~~~~--~~--~--~---
[Lift] Re: Stamped Trait question
On Thursday, July 30, 2009, 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/KeyedMapper.html
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
--
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
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Lift group.
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To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
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-~--~~~~--~~--~--~---
[Lift] Re: Stamped Trait question
K is the type of the primary key:
object MyModel extends MyModel with KeyedMetaMapper[Long, MyModel] with
MyLogger[MyModel, Long]
On Wed, Jul 29, 2009 at 4:18 PM, fbettag fr...@bett.ag wrote:
how would i use that trait?
with MyLogger[MyModel, MyModel] ? What is A and what is K supposed to
be?
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 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
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Lift group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~--~~~~--~~--~--~---
[Lift] Re: Stamped Trait question
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
[Lift] Re: Stamped Trait question
trait Stamped[A : LongKeyedMapper[A] with IdPK] extends
KeyedMetaMapper[Long, A] {
self: A with MetaMapper[A] with KeyedMapper[Long, A] =
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
println(Got: +obj)
}
}
this works!
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
[Lift] Re: Stamped Trait question
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 {
[Lift] Re: Stamped Trait question
Now the last and final question: how would i go about and add this to
the trait:
object test extends MappedBoolean(this) ?
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
[Lift] Re: Stamped Trait question
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
[Lift] Re: Stamped Trait question
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)
}
def afterUpdate {
createActionLog(update, this.getClass.toString, this.id)
}
def beforeDelete {
createActionLog(delete, this.getClass.toString, this.id)
}
private def createActionLog(action: String, klass: String, obj: Long)
{
val log = new ActionLog
log.action(action).klass(klass).record(obj).save
}
}
Now i ensured that the OwnerType class has a LongKeyedMapper with
IdPK.
The final problem is:
afterSave is supposed to return a List(Any) meaning List(OwnerType)..
how can i find out what the OwnerType class is?
And what is it supposed to return? Simply the unmodified record in my
case?
best regards
On 27 Jul., 05:07, fbettag fr...@bett.ag wrote:
Hey guys,
i#ve gotten this together, to get a log of who's editing what. The
trait will give you the idea:
import java.util.Date
import model._
import net.liftweb.mapper._
trait Stamped[OwnerType : Stamped[OwnerType]] extends LongKeyedMapper
[OwnerType] with IdPK {
this: OwnerType =
private val thisTyped = this.asInstanceOf[MapperType]
def afterSave {
createActionLog(create, this.getClass.toString, this.id)
}
def afterUpdate {
createActionLog(update, this.getClass.toString, this.id)
}
def beforeDelete {
createActionLog(delete, this.getClass.toString, this.id)
}
private def createActionLog(action: String, klass: String, obj: Long)
{
val log = new ActionLog
log.action(action).klass(klass).record(obj).save
}
}
On every action i create a log. It's better than having only createdAt/
On which only idicates only the last change, but to have a history.
My only problem is, the extends LongKeyedMapper is the only way to
make it compile with this.id as last parameter of createActionLog().
The question is, how can i find out if the supplied OwnerType Model is
extended with LongKeyedMapper?
Is it possible to supply some kinda subclass check on the supplied
OwnerType.
Btw, i forgot what : does (like in Stamped[OwnerType : Stamped
[OwnerType]]).
any help would be great!
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