entityManager

ScenarioEntityManager.persistEntityManager.mergeSessionManager.saveOrUpdate
Object passed was never persisted 1. Object added to persistence context as new entity
2. New entity inserted into database at flush/commit		 1. State copied to new entity.
2. New entity added to persistence context
3. New entity inserted into database at flush/commit
4. New entity returned		 1. Object added to persistence context as new entity
2. New entity inserted into database at flush/commit
Object was previously persisted, but not loaded in this persistence context 1. EntityExistsException thrown (or a PersistenceException at flush/commit) 2. Existing entity loaded.
2. State copied from object to loaded entity
3. Loaded entity updated in database at flush/commit
4. Loaded entity returned		 1. Object added to persistence context
2. Loaded entity updated in database at flush/commit
Object was previously persisted and already loaded in this persistence context 1. EntityExistsException thrown (or a PersistenceException at flush or commit time) 1. State from object copied to loaded entity
2. Loaded entity updated in database at flush/commit
3. Loaded entity returned		 1. NonUniqueObjectExceptionthrown
posted @ 2014-10-10 11:15  LeonGo  阅读(244)  评论(0)  编辑  收藏  举报