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http://jira.jboss.com/jira/browse/JBSEAM-1814?page=comments#action_12418184 ]
Alex Savitsky commented on JBSEAM-1814:
---------------------------------------
An updated isRef version - the one I currently use in my projects:
if (value instanceof Collection) {
Collection c = (Collection) value;
if (!c.isEmpty()) {
Iterator i = c.iterator();
while (i.hasNext()) {
Object o = i.next();
if (o == null) {
continue;
}
return Seam.getEntityClass(o.getClass()) != null;
}
}
return false;
}
return Seam.getEntityClass(value.getClass()) != null;
Though it might be a good idea to limit the # of checked elements to some reasonable
amount, for performance reasons
DataModel wrapped data is set to null by
ManagedEntityIdentityInterceptor
-------------------------------------------------------------------------
Key: JBSEAM-1814
URL:
http://jira.jboss.com/jira/browse/JBSEAM-1814
Project: Seam
Issue Type: Bug
Components: Core
Affects Versions: 2.0.0.BETA1
Environment: seam cvs (20070816.1709)
Reporter: Matt Drees
Assigned To: Norman Richards
Priority: Minor
Fix For: The future
The following test fails:
@Name("dataModelComponent")
@Scope(ScopeType.CONVERSATION)
public class DataModelComponent extends EntityQuery {
@Override
public String getEjbql() {
return "from java.lang.Object o";
}
}
public class DataModelComponentTest extends SeamTest {
@Test
public void test() throws Exception {
new FacesRequest() {
@Override
protected void renderResponse() throws Exception {
DataModel model = (DataModel)
getValue("#{dataModelComponent.dataModel}");
assert model.getWrappedData() != null;
}
}.run();
}
}
Because the component is conversation-scoped, a ManagedEntityIdentityInterceptor is
attached, which nulls the wrapped List after getDataModel() is called.
In the referenced forum, Gavin indicated he hadn't decided whether this should be
expected behavior or not, and asked for a jira issue.
If it is expected behavior (I hope not), I think either EntityQuery should not have a
getDataModel() attribute, or it should be documented and/or programmatically enforced that
EntityQuerys should not be conversation-scoped.
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