/**
* Create ITidePersistenceManager for a PersistenceController
*
* @param component
* @param controller
* @return a ITidePersistenceManager.
*/
public static TidePersistenceManager createTidePersistence(
Component component, PersistenceController<?> controller) {
TidePersistenceManager pm = TidePersistenceFactory.createTidePersistence(component, controller);
if (pm != null) return pm;
String controllerName = component.getName();
if (controller.getPersistenceContext() instanceof Session)
return new HibernatePersistenceControllerManager(controllerName);
return null;
}
/**
* Attach the passed in entity with the EntityManager stored in the EntityHome object.
*
* @param entity
* @return the attached hibernate object
*/
@Override
public Object fetchEntity(Object entity, String[] fetch) {
PersistenceController<?> controller =
(PersistenceController<?>) Component.getInstance(controllerName);
EntityManager em = (EntityManager) controller.getPersistenceContext();
Serializable id = (Serializable) Entity.forClass(entity.getClass()).getIdentifier(entity);
if (id == null) return null;
if (fetch == null || em.getDelegate().getClass().getName().indexOf(".hibernate.") < 0)
return em.find(entity.getClass(), id);
for (String f : fetch) {
Query q =
em.createQuery(
"select e from "
+ entity.getClass().getName()
+ " e left join fetch e."
+ f
+ " where e = :entity");
q.setParameter("entity", entity);
entity = q.getSingleResult();
}
return entity;
}
