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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-330) unable to persist a new entity, when there is a entity with id value 0 loaded in persistent context
Date Tue, 05 Apr 2011 14:42:05 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015935#comment-13015935
] 

Rick Curtis commented on OPENJPA-330:
-------------------------------------

Heinz -

Can you try adding a @Version column to your Entity to see if that helps?

> 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
>         Attachments: ptpissue7.zip
>
>
> 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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