Thomas Kappler-3 wrote:
>
> On 03/02/10 11:55, marioosh.net wrote:
>> Sorry for my poor english ;)
>>
>> I have ListView and model like below. I need tabs to reload sometimes,
>> so my model is dynamic and get tabs from database.
>> But i see that something is wrong. When i want to get Tab object by
>> getModelObject() in populateItem method i suppoused that i got it
>> directly, but i see that all the times the getObject() method of model
>> is triggered making for all items new list (new db request) !
>
> That's exactly what is supposed to happen, as getModelObject() is just a
> shorthand for getModel().getObject(). And in your getObject(), you do
> the database request.
>
> If you need to avoid those database reloads, look into
> LoadableDetachableModels.
>
> -- Thomas
>
Thank You very much Thomas.
I move code from getObject() method in IModel to load() method in
LoadableDetachableModel and everything works! - no more useless requests to
db :)
LoadableDetachableModel model2 = new LoadableDetachableModel() {
@Override
protected Object load() {
...
// getting list from DB
List<Tab> list = ....;
return list;
}
};
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