What problems does it cause?
On Tue, Sep 16, 2008 at 9:14 AM, Cédric Thiébault
<[EMAIL PROTECTED]> wrote:
> Thanks Michael.
>
> But I don't use the OpenSessionInviewFilter and I don't want to use it.
> It creates more problems than it solves in my edit pages.
>
> The LoadableDetachableModel will load the whole list of choices, not
> just the one that was selected by the user.
> I will encounter the same error except if the
> LoadableDetachableModel.load method pre-fetch the associations...
>
> Cedric
>
>
> On Tue, Sep 16, 2008 at 3:01 AM, Michael Sparer <[EMAIL PROTECTED]> wrote:
>>
>> Use LoadableDetachableModels (and be sure that the OpensessionInviewFilter
>> goes before the wicketfilter) and your hibernate entity will always be in
>> the right session
>>
>> regards,
>> Michael
>>
>> thiebal wrote:
>>>
>>> My DropDownChoice contains a list of hibernate entities that are not
>>> fully loaded.
>>> But when I select a value in the dropdown I receive a
>>> LazyLoadingException because Wicket tries to add an entry in a
>>> collection that was not previously loaded.
>>>
>>> I tried to use a Converter but it is not called because
>>> PropertyResolverConverter set directly the value (because their
>>> classes are compatible) :
>>> if (clz.isAssignableFrom(object.getClass())) {
>>> return object;
>>> }
>>>
>>> It works if I preload each entry in the list of choices of the
>>> DropDownChoice but it is very expensive. To display the dropdown, I
>>> just need to retrieve the name of my hibernate entity, not the
>>> collection inside this bean.
>>> I would like to load the collection only when the user select an
>>> option in the select.
>>>
>>> Code :
>>> class Foo {
>>> Bar bar;
>>>
>>> void setBar(Bar bar) {
>>> this.bar = bar;
>>> bar.getFoos().add(this); // this will throw a
>>> LazyLoadingException if I don't fetch the collections before I render
>>> the DropDownChoice
>>> }
>>> }
>>>
>>> class Bar {
>>> Collection<Foo> foos;
>>> }
>>>
>>> Is there a nice way to do that ?
>>>
>>> Thanks in advance :-)
>>>
>>> Cedric
>>>
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>>>
>>>
>>
>>
>> -----
>> Michael Sparer
>> http://talk-on-tech.blogspot.com
>> --
>> View this message in context:
>> http://www.nabble.com/DropDownChoice-and-lazy-loaded-choices-tp19501118p19506463.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
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>
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