I everyone,
I have a class *GAEDaoSupport* who convert *Object* to *Entity* while
copying properties. I have a JUnit test for this class who check the
conversion and try to store and retrieve values.
When I try to store a *List* of *Entity* where the first is the ancestor and
others are childs I can retrieve all of them by *Key *but a kindless *Query* on
ancestor *Key* return nothing.. I suppose that I'va missed something but
don't now what..
Here is my test case and the output...
> GAEDaoSupport support = *new *GAEDaoSupport(RoleEntity.*class*);
> RoleEntity object = newRelationsEntity();
>
> DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
> List<Entity> entities = support.createEntity(object);
> System.out.println(" -- [1] Storing "+entities.size()+" entities -------"
> );
> System.out.println(entities);
> List<Key> keys = ds.put(entities);
> System.out.println("\t \\-> Done. Keys : "+keys);
>
> *try *{
> // Pass...
> Entity stored = ds.get(entities.get(0).getKey());
> assertEquals(entities.get(0), stored);
// Pass...
> *for *(*final *Entity child : entities.subList(1, entities.size())) {
> assertEquals(child, ds.get(child.getKey()));
> }
>
> // Fail !!! , Result is empty
> System.out.println();
> System.out.println(" -- [2] Retrieving entities by ancestor
> ------------");
> Query query = new Query()
> .setAncestor(entities.get(0).getKey());
> System.out.println("\t - Query : "+query);
>
> List<Entity> childs =
> ds.prepare(query).asList(FetchOptions.Builder.withDefaults());
> System.out.println("\t \\-> Done : "+childs);
> } *catch *(EntityNotFoundException e) {
> fail(e.getMessage());
> }
Output :
> -- [1] Storing 5 entities -------
> [<Entity [RoleEntity("Role")]:
> system = true
> >
> , <Entity [RoleEntity("Role")/Authorisations(no-id-yet)]:
> access = r
> >
> , <Entity [RoleEntity("Role")/Authorisations(no-id-yet)]:
> access = w
> >
> , <Entity [RoleEntity("Role")/UserEntity("0")]:
> enabled = true
> username = User0
> lastLogin = null
> email = null
> expiration = null
> password = null
> >
> , <Entity [RoleEntity("Role")/UserEntity("1")]:
> enabled = true
> username = User1
> lastLogin = null
> email = null
> expiration = null
> password = null
> >
> ]
> \-> Done. Keys : [RoleEntity("Role"),
> RoleEntity("Role")/Authorisations(1), RoleEntity("Role")/Authorisations(2),
> RoleEntity("Role")/UserEntity("0"), RoleEntity("Role")/UserEntity("1")]
>
-- [2] Retrieving entities by ancestor ------------
> - Query : SELECT * WHERE __ancestor__ is RoleEntity("Role")
> \-> Done : []
My test case use a simple *LocalServiceTestHelper *, like described into the
gae documentation :
> *private final* LocalServiceTestHelper helper =
> *new *LocalServiceTestHelper(*new *
> LocalDatastoreServiceTestConfig());
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