Short answer, group is set but the list are null?
2009/4/29 nino martinez wael <nino.martinez.w...@gmail.com>:
> Hmm I have something similar, though not getting npe (from 1.3 project) :
>
>
>
> /**
> *
> *
> */
> public class SortableSearchDataProvider extends SortableDataProvider {
>
> private SearchParameters searchParameters;
> /**
> * constructor
> */
> public SortableSearchDataProvider(SearchParameters searchParameters) {
> this.searchParameters=searchParameters;
> // set default sort
> setSort("alias", true);
> InjectorHolder.getInjector().inject(this);
> }
>
> �...@springbean
> private IDBDao dbDao;
>
> protected IDBDao getDao() {
> return dbDao;
> }
>
> /**
> * @see
> org.apache.wicket.markup.repeater.data.IDataProvider#iterator(int,
> * int)
> */
> public Iterator iterator(int first, int count) {
> SortParam sp = getSort();
> return getDao().searchForSchemes(first, count,
> sp.getProperty(),
> sp.isAscending(),searchParameters)
> .iterator();
> }
>
> /**
> * @see org.apache.wicket.markup.repeater.data.IDataProvider#size()
> */
> public int size() {
> return getDao().searchForSchemesCount(searchParameters);
> }
>
> /**
> * @see
> org.apache.wicket.markup.repeater.data.IDataProvider#model(java.lang.Object)
> */
> public IModel model(Object object) {
> return new BaseEntityDetachableModel((Person) object);
> }
>
> }
>
>
> 2009/4/29 HHB <hubaghd...@yahoo.ca>:
>>
>> Actually, thats what I'm doing (you can check my code).
>> The NPE is regarding the Group object instance, not Spring bean.
>>
>>
>> Willis Blackburn wrote:
>>>
>>> Hi,
>>>
>>> The @SpringBean annotation is only resolved by Component and its
>>> subclasses. (Actually it's resolved by SpringComponentInjector--but
>>> that only works with components.)
>>>
>>> You can call InjectorHolder.getInjector().inject(whatever) to resolve
>>> @SpringBean annotations in the whatever object.
>>>
>>> W
>>>
>>>
>>>
>>> On Apr 29, 2009, at 6:38 AM, HHB wrote:
>>>
>>>> Hey,
>>>> I'm trying to employ DataTable in our application.
>>>> *************************
>>>> public class SortableContactDataProvider
>>>> extends SortableDataProvider {
>>>>
>>>> �...@springbean
>>>> private Service service;
>>>>
>>>> private Group group;
>>>>
>>>> public SortableContactDataProvider(Group group) {
>>>> if (group == null)
>>>> throw new IllegalStateException("Group is null");
>>>> InjectorHolder.getInjector().inject(this);
>>>> setSort("gsm", true);
>>>> this.group = group;
>>>> }
>>>>
>>>> public Iterator iterator(int first, int max) {
>>>> return service.list(group, first, max,
>>>> getSort().getProperty(),
>>>> getSort().isAscending()).iterator();
>>>> }
>>>>
>>>> public int size() {
>>>> return service.listContactsSize(group);
>>>> }
>>>>
>>>> public IModel model(Object object) {
>>>> Contact contact = (Contact) object;
>>>> return new DomainEntityModel<Contact>
>>>> (Contact.class, contact.getId());
>>>> }
>>>>
>>>> public void setGroup(Group group) {
>>>> if (group == null)
>>>> throw new IllegalStateException("Group is null");
>>>> this.group = group;
>>>> }
>>>>
>>>> }
>>>> *************************
>>>> And I use it this way (inside the panel constructor):
>>>> *************************
>>>> Group group = new Group();group.setId(1L);
>>>> SortableContactDataProvider scdp = new
>>>> SortableContactDataProvider(group);
>>>> scdp.setGroup(group);
>>>> final List<IColumn> columns = new ArrayList<IColumn>();
>>>> columns.add(new PropertyColumn(new Model("GSM"), "gsm", "gsm"));
>>>> AjaxFallbackDefaultDataTable contacts = new
>>>> AjaxFallbackDefaultDataTable("table", columns, scdp, 10);
>>>> final WebMarkupContainer wmc = new
>>>> WebMarkupContainer("contactsTable");
>>>> wmc.setOutputMarkupId(true);
>>>> wmc.add(contacts);
>>>> add(wmc);
>>>> *************************
>>>> When running the application, I got NullPointerException
>>>> from the method size() of the provider, the group object is null.
>>>> Why the object is null?
>>>> and if it is null, why IllegalStateException is not being thrown?
>>>> I'm using Wicket 1.3.5
>>>> Thanks for help.
>>>>
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>>>> For additional commands, e-mail: users-h...@wicket.apache.org
>>>>
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>>> For additional commands, e-mail: users-h...@wicket.apache.org
>>>
>>>
>>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Why-I%27m-getting-NPE--tp23294732p23295098.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> For additional commands, e-mail: users-h...@wicket.apache.org
>>
>>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
