txn = session.beginTransaction();
repository.setAttribute(0, "test.x", "xvalue0");
repository.setAttribute(0, "test.y", "yvalue0");
repository.setAttribute(10000, "test.y", "foo");
txn.commit();
txn = session.beginTransaction();
assertEquals("wrong attribute value", "xvalue0", repository.getAttribute(0, "test.x"));
assertEquals("wrong attribute value", "yvalue0", repository.getAttribute(0, "test.y"));
assertEquals("wrong attribute value", "foo", repository.getAttribute(10000, "test.y"));