> The data provider is kept as the model because that is where the
sorting
> state lives and that needs to be versioned. I need to refactor that
out
> of
> the dataprovider looks like.
>
I see.
Maybe an interface ISortOrderProvider which is exactly like
ISortableDataProvider but does not extend IDataProvider. The interface
could than be implemented by special Components directly (ie
SortableHeader). And a DataProvider which supports sorting uses an
instance of this interface to sort its data. I thing this would also
decouple the sorting from DataView etc.
Christian
> -Igor
>
> On 12/3/05, Christian Essl <[EMAIL PROTECTED]> wrote:
>>
>> On Fri, 2 Dec 2005 22:51:05 +0100, Johan Compagner
>> <[EMAIL PROTECTED]>
>> wrote:
>>
>> > Maybe we should build something that it is easier for models to
>> version
>> > themselfs. Like an interface IVersionable with a method
Serializeable
>> > getVersionData()
>> > Which a model can implement. And then we don't store the complete
>> model
>> > but
>> > only that data.
>>
>> If I understand right than a IModel which does not implement
>> IVersionable
>> does not get stored in the version history? I think this would be
good,
>> because the current situation is confusing.
>>
>> Concerning DataView I'd say that when a the IDataProvider is given
>> directly in the constructor. It should not be stored as the model of
>> DataView but kept in an instancefield, because in nearly all cases it
>> will
>> be a pull-model. If you need versioning than you can always wrap it
in
a
>> model.
>>
>> Christian
>>
>> >
>> > johan
>> >
>> >
>> > On 12/2/05, Nathan Hamblen <[EMAIL PROTECTED]> wrote:
>> >>
>> >> This came up before when I was trying to track down why reversing
the
>> >> sort order of a DataView was bringing down my test application.
>> >> (http://thread.gmane.org/gmane.comp.java.wicket.user/4309) It
turned
>> out
>> >> that the page versioning code was serializing the entire view
>> hierarchy,
>> >> recursively, because of anonymous model classes that contained
>> pointers
>> >> back into the view.
>> >>
>> >> The consensus was that you would have to turn off page versioning
if
>> you
>> >> wanted an anonymous IModel. Is this still the case? I'm just now
>> >> noticing anonymous IModels becoming sort of recommended. Does that
>> mean
>> >> than page versioning is not recommended anymore?
>> >>
>> >> I'll admit don't even understand how versioning is supposed to
work.
>> >> DataView sorting seems to be one of the few things that triggers
it.
>> >> I've got forms updating models all over the place and nary a
version
>> to
>> >> be seen. So, I just turn it OFF then, and anonymously subclass
IModel
>> to
>> >> my heart's content?
>> >>
>> >> Nathan
>> >>
>> >> Christian Essl wrote:
>> >> > On Thu, 1 Dec 2005 14:24:20 -0500, Andrew Berman
>> <[EMAIL PROTECTED]>
>> >> > wrote:
>> >> >
>> >> >> Honestly, I don't think there ever was a Spring Integration
>> >> problem. I
>> >> >> think people were just looking for a cookie-cutter approach to
>> using
>> >> >> Spring
>> >> >> within Wicket. It's actually quite easy to do without using
any
>> of
>> >> the
>> >> >> Spring stuff that Igor and others wrote, but it's always a good
>> thing
>> >> to
>> >> >> have a common approach that everyone can follow.
>> >> >
>> >> > Honestly, I think Igor did a good job: It is just easier and
more
>> >> > natural to write over and over again:
>> >> >
>> >> > new HibernateModel(obj,_dao);
>> >> >
>> >> > than
>> >> >
>> >> > new HibernateModel(obj, new Model(){
>> >> > getObject(Component comp){
>> >> > return ((MyApplication)Appliation.get()).getDAO();
>> >> > }
>> >> > });
>> >> >
>> >> > and this is not restricted to HibernateDAOs but to any bean you
do
>> not
>> >> > want to get serialized whtih your components.
>> >> >
>> >> > Christian
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ___________________________________________________________
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>>
>>
>> --
>> Christian Essl
>>
>>
>>
>>
>>
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