Is it legal to use a non-entity class as the second argument to
EntityManager#createNamedQuery(String,
Class)?
For example, I'd like to do:
final List<Frob> stuff =
em.createNamedQuery("someQueryReturningEntityInstancesOfFrob", Frob.class);
...where Frob.class is not an entity class, but is (let's say) an interface
that entities returned by the named query implement.
The javadocs indicate that this should be legal:
The select list of the query must contain only a single item, which must be
> assignable to the type specified by the resultClass argument.
That also tells me that:
final List<Object[]> stuff =
em.createNamedQuery("someQueryReturningObjectArray", Object[].class);
...is illegal. Why is that? If my named query results (logically
speaking) in List<Object[]>, what is the best signature/method to use?
Thanks,
Laird
--
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