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Subject: Re: LoadableDetachableModels for a ListView ( database with Cayenne)
From: =?iso-8859-1?Q?Fran=E7ois_Meillet?= <fmtdc@meillet.com>
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Date: Thu, 16 Feb 2012 16:09:40 +0100
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To: users@wicket.apache.org
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Hi Vineet,

   public LoadableDetachableModel<YourClass> load(final Long xxx) {
  =20
        LoadableDetachableModel<List<YourClass>> model =3D new =
LoadableDetachableModel<List<YourClass>>() {

            protected YourClass load() {
                try {
                   =20
                    List<YourClass> list =3D get your liste here( xxx )
                   =20
                    return list=20
                   =20
                } catch (YourException e) {
                  =20
                }
            }
        };
        return model;
    }

IModel<List<YourClass>> model =3D load( x );

new ListView<YourClass>(id, model) ;



That is ok for a small list.

And if you have to handle large lists, you should use a Dataview with =
DataProvider.

Fran=E7ois=20





Le 16 f=E9vr. 2012 =E0 15:53, vineet semwal a =E9crit :

> sorry when i meant if you are going to retrieve a lot of data use =
dataview
>=20
> On Thu, Feb 16, 2012 at 8:17 PM, vineet semwal
> <vineetsemwal1982@gmail.com> wrote:
>> see listmodel
>>=20
>> btw if you have a big list ,use dataview
>>=20
>> On Thu, Feb 16, 2012 at 8:14 PM, atomix =
<say_i_love_you_4ever@yahoo.com> wrote:
>>> Hi all ,
>>>=20
>>> I'm using Cayenne as my database service...
>>>=20
>>> Now in a query return a List<Person>
>>>=20
>>> which I want to wrap a whole List in to ( so call)
>>> LoadableDetachableListModels to provide for a ListView, I'm also =
know that a
>>> DataProvider could do the same thing but did any one have write =
something
>>> like LoadableDetachableListModels to wrap a generic List and provide =
to a
>>> ListView...
>>>=20
>>> Please help!!
>>>=20
>>> I've read
>>> http://wicketinaction.com/2008/09/building-a-smart-entitymodel/
>>> .. so one entity is fine but
>>> but didn't know very clear what can be use for a List
>>>=20
>>> --
>>> View this message in context: =
http://apache-wicket.1842946.n4.nabble.com/LoadableDetachableModels-for-a-=
ListView-database-with-Cayenne-tp4394185p4394185.html
>>> Sent from the Users forum mailing list archive at Nabble.com.
>>>=20
>>> =
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>>>=20
>>=20
>>=20
>>=20
>> --
>> thank you,
>>=20
>> regards,
>> Vineet Semwal
>=20
>=20
>=20
> --=20
> thank you,
>=20
> regards,
> Vineet Semwal
>=20
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>=20


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