[OJB-developers] M-N Unidirectional updates (notably removal of dependent objects) Failing

[Galvin H. <gk...@ya...>]

Btw, CVS build is failing since the javac compiler is
getting confused about IdentityHashMap() in
PersistentBrokerImpl - it exists in java.util and also
in ojb.broker.util.

Took out the newest CVS version and compiled it -
wrote a junit test case to handle updates to a M-N
unidirectional relationship:

This test case does the following:

1) Retrieves a person
2) Gets its associated projects
3) Adds a project to a particular person (this passes)
4) Checks to see if the person is associated to the
new project
5) Removes all projects to a particular person (this
fails)
6) Checks to see if the person has no associated
projects

This really limits the use of the current CVS
unidirectional M-N mapping.

	public void testUpdateUnidirectional()
	{
		try
		{
			PersonUnidirectional p = new
PersonUnidirectional();
			p.setId(1);
			Query q = QueryFactory.newQuery(p);
			p = (PersonUnidirectional)
broker.getObjectByQuery(q);
			Collection projects = p.getProjects();
			ProjectUnidirectional[] projectArray =
(ProjectUnidirectional[]) projects.toArray(new
ProjectUnidirectional[0]); // load it

			assertNotNull(projects);
			int count = projects.size();

			ProjectUnidirectional proj = new
ProjectUnidirectional();
			proj.setTitle("MARS");
			proj.setDescription("colonization of planet Mars");

			p.getProjects().add(proj);
			broker.beginTransaction();
			broker.store(p);
			broker.commitTransaction();

			broker.clearCache();

			p = (PersonUnidirectional)
broker.getObjectByQuery(q);

			assertEquals(count + 1, p.getProjects().size());

			broker.beginTransaction();

			projects = p.getProjects();
			projects.clear();
			p.setProjects(projects);

			broker.store(p);
			broker.commitTransaction();

			broker.clearCache();

			p = (PersonUnidirectional)
broker.getObjectByQuery(q);
			assertEquals(0, p.getProjects().size());
		}
		catch (Throwable t)
		{
			System.out.println(t.getMessage());
			t.printStackTrace();
			fail(t.getMessage());
		}
	}

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