[jboss-user] [EJB 3.0] - Re: onetomany relationship question
lpiccoli
do-not-reply at jboss.com
Wed Jul 8 00:07:15 EDT 2009
ok it seems that my test cases were erroneous.
i finally got the onetomany to fetch the 'many' by refreshing the entity. This then invoked the following query
| hibernate: select childbean0_.ID as ID3_, childbean0_.parent_ID as parent2_3_ from ChildBean childbean0_ where childbean0_.parent_ID=?
|
my test code also shows that the relationship only needs to be set on the many side.
|
| @Test
| public void one2manyTestWithSettingManySide() {
|
| ParentBean parent = new ParentBean();
| entityManager.persist(parent);
| long id = parent.getId();
|
| ChildBean child1 = new ChildBean();
| child1.setParent(parent);
| entityManager.persist(child1);
|
| ChildBean child2 = new ChildBean();
| child2.setParent(parent);
| entityManager.persist(child2);
|
| Query query = entityManager.createQuery("from ChildBean child where parent.id=:id");
| query.setParameter("id", id);
| List resultList = query.getResultList();
| assertEquals( 2, resultList.size() );
|
| //check refresh
| entityManager.refresh(parent);
| assertEquals( 2, parent.getChilds().size() );
|
| ParentBean parentBean = entityManager.find(ParentBean.class, parent.getId());
|
| assertEquals( 2, parentBean.getChilds().size() );
|
| }
|
|
thanks for your help wolfgang.
-lp
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