Hi,
We are using editor framework for CRUD operations with mysql/Hibernate
Backend. We managed to create and modify simple fields (String, other
proxies entities ...) but we have a NPE while trying to edit a new
proxy created by RequestContext.create(); which contains an arraylist
of another entityProxy :
@ProxyFor(A.class)
public interface AProxy extends EntityProxy {
Long getId();
Integer getVersion();
void setB(List<BProxy> listofB);
List<BProxy> getB();
}
...Here's the View
@Path("b")
HasDataEditor<BProxy> bEditor;
@UiField
CellTable<BProxy> bTable;
ListDataProvider<BProxy> bTableDataProvider;
public AEditorView() {
bTableDataProvider = new ListDataProvider<BProxy>();
initWidget(uiBinder.createAndBindUi(this));
bEditor = HasDataEditor.of(bTable);
...
... We initialize the editor
getView().getDataBinder().initialize(requestFactory, getView());
context = createRequestContext();
AProxy newEntity = context.create(AProxy.class);
--> edit(newEntity, context);
...
And Boom!
Here's the stack :
Caused by: java.lang.NullPointerException: null
at
com.google.gwt.editor.client.adapters.ListEditorWrapper.<init>(ListEditorWrapper.java:
43)
at
com.google.gwt.editor.client.adapters.ListEditor.setValue(ListEditor.java:
131)
at
com.google.gwt.editor.client.adapters.ListEditor.setValue(ListEditor.java:
1)
at
com.google.gwt.editor.client.impl.AbstractEditorDelegate.initialize(AbstractEditorDelegate.java:
260)
at
com.google.gwt.requestfactory.client.impl.RequestFactoryEditorDelegate.initialize(RequestFactoryEditorDelegate.java:
85)
at
c.f.c.p.client.ui.profile.edit.ProfileEditorView_RequestFactoryEditorDelegate.attachSubEditors(ProfileEditorView_RequestFactoryEditorDelegate.java:
44)
at
com.google.gwt.editor.client.impl.AbstractEditorDelegate.initialize(AbstractEditorDelegate.java:
264)
at
com.google.gwt.requestfactory.client.impl.RequestFactoryEditorDelegate.initialize(RequestFactoryEditorDelegate.java:
85)
at
com.google.gwt.requestfactory.client.impl.AbstractRequestFactoryEditorDriver.edit(AbstractRequestFactoryEditorDriver.java:
92)
at
c.f.c.p.client.mvp.editor.EditorPresenter.edit(EditorPresenter.java:
63)
Any ideas ?
We don't understand why the collections based fields of a new proxy
aren't initialized with an empty Collection (ArrayList for instance).
Best Regards
Romain BIARD
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