Re: Why I'm getting NPE?
What is the stacktrace when group is null? On 29/04/2009, HHB hubaghd...@yahoo.ca 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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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
Why I'm getting NPE?
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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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
Re: Why I'm getting NPE?
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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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
Re: Why I'm getting NPE?
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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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
Re: Why I'm getting NPE?
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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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:
Re: Why I'm getting NPE?
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 DomainEntityModelContact (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 ListIColumn columns = new ArrayListIColumn(); 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: