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From "Henry Lai (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-330) unable to persist a new entity, when there is a entity with id value 0 loaded in persistent context
Date Wed, 22 Aug 2007 22:20:31 GMT
unable to persist a new entity, when there is a entity with id value 0 loaded in persistent
context
---------------------------------------------------------------------------------------------------

                 Key: OPENJPA-330
                 URL: https://issues.apache.org/jira/browse/OPENJPA-330
             Project: OpenJPA
          Issue Type: Bug
          Components: jpa
    Affects Versions: 1.0.0
            Reporter: Henry Lai


unable to persist a new entity, when there is a entity with id value 0 loaded in persistent
context.
The entity is declared to use generated value sequence strategy.

<1.0.0-SNAPSHOT-SNAPSHOT nonfatal store error> org.apache.openjpa.persistence.EntityExistsException:
An object of type "ptp.test.issue7.T7Entity" with oid "ptp.test.issue7.T7Entity-0" already
exists in this context; another cannot be persisted.


	public void testEntityWithZeroID(){
		PersistenceProviderImpl openJPA = new PersistenceProviderImpl();
		EntityManagerFactory factory = 
			openJPA.createEntityManagerFactory("test", "ptp/test/issue7/persistence.xml",
						System.getProperties() );
		
        EntityManager em = factory.createEntityManager();
        em.getTransaction().begin();
		Query deleteStmt = em.createNativeQuery("delete from T7Entity");
		deleteStmt.executeUpdate();
		em.getTransaction().commit();
		
        em = factory.createEntityManager();
        em.getTransaction().begin();
        Query createStmt = em.createNativeQuery("insert into T7Entity (S_ID,NAME) values (0,'MICKEY')");
        createStmt.executeUpdate();
        em.getTransaction().commit();
        
        
        em = factory.createEntityManager();
        em.getTransaction().begin();
        Query query = em.createQuery("select obj from T7Entity obj");
        List resultList = query.getResultList();
        
        T7Entity aEntity = new T7Entity();
        aEntity.setName("Minnie");
        
        em.persist(aEntity);	// fails here
        
        em.getTransaction().commit();
        
        em.close();
	}



	<entity class="T7Entity">
		<table name="T7Entity" />
		<attributes>
			<id name="id">
				<column name="S_ID" />
				<generated-value strategy="SEQUENCE" generator="seqGen1" />
				<sequence-generator name="seqGen1"	sequence-name="SEQ_OBJECT_ID" />
			</id>
			
			<basic name="name" />

		</attributes>
	</entity>


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