[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3230) getEntityName() throws org.hibernate.TransientObjectException: proxy was not associated with the session

[Diego del Río (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=39720#action_39720 ] 

Diego del Río commented on HHH-3230:
------------------------------------

Gail, the test succeeds if the exception is thrown, therefore is still an issue in Hibernate 3.6.1-SNAPSHOT.
But I am realizing that it's a bit confusing, so this is the version of the test that fails if the exception is thrown and succeeds if the exception isn´t thrown
{noformat}
package org.headlesspigs.test;

import org.headlesspigs.domainmodel.Invoice;
import org.headlesspigs.domainmodel.WorkingPerson;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.testing.junit.functional.FunctionalTestCase;

public class ProxyNarrowingTest extends FunctionalTestCase {

	public ProxyNarrowingTest(String string) {
		super(string);
	}

	public String[] getMappings() {
		return new String[] { "Person.hbm.xml", "Invoice.hbm.xml" };
	}

	public String getBaseForMappings() {
		return "org/headlesspigs/domainmodel/";
	}

	public boolean createSchema() {
		return true;
	}

	public void testNarrowingProxy() throws Exception {
		Session s = null;
		Transaction tx = null;
		WorkingPerson p1 = null;
		WorkingPerson p2 = null;
		Invoice inv = null;
		try {
			s = this.openSession();
			tx = s.beginTransaction();
			p1 = new WorkingPerson("Adrian");
			p2 = new WorkingPerson("Batista", p1);
			inv = new Invoice("A-462", p1, p2);
			s.save(inv);
			tx.commit();
		} catch (Exception e) {
			if (tx != null) {
				tx.rollback();
			}
			throw e;
		} finally {
			if (s != null) {
				s.close();
			}
		}

		try {
			s = this.openSession();
			tx = s.beginTransaction();
			inv = (Invoice) s.load(Invoice.class, inv.getId());
			assertEquals("A-462", inv.getNumber());

			// The following line causes the proxy to the emitter Person to be
			// initialized. During this initialization, a proxy to
			// the referee person is found but its type is Person and not
			// WorkingPerson as needed, so Hibernate creates another proxy to
			// the referee, this time of type WorkingPerson, replacing the old
			// one.
			assertEquals("Batista", inv.getEmitter().getName());
			s.getEntityName(inv.getReceiver());
			tx.commit();
		} catch (Exception e) {
			if (tx != null) {
				tx.rollback();
			}
			throw e;
		} finally {
			if (s != null) {
				s.close();
			}
		}
	}
}
{noformat}

> getEntityName() throws org.hibernate.TransientObjectException: proxy was not associated with the session
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-3230
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3230
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.2, 3.6.0
>         Environment: Mac OS X, JDK 1.5
>            Reporter: Howard M. Lewis Ship
>         Attachments: Debugging output from IDEA.jpg, NarrowingProxyTestCase.zip
>
>
> I'm retrieving an entity that contains a OneToMany relationship.
> The master entity is retrieved, within a transaction, via Session.get(Class,Serializable).
> @Entity
> public class MapUnitSurvey extends ActiveDO
> {
>        @ManyToOne(fetch = FetchType.LAZY)
>     private VegetationType vegetationType;
> }
> @Entity
> public class VegetationType extends AbstractEnum
> {
> }
> ActiveDO and AbstractEnum are abstract base classes with @MappedSuperclass.
> I retrieve the vegationType:
>    VegetationType type = survey.getVegetationType();
> Then I need the type's entity name
> 	String entityName = session.getEntityName(type);
> 			
> This fails with the TransientObjectException.
> Inspecting with the debugger, I see that type is a CGLIB-enhanced proxy, and that there's a fully initialized bean in the target field of the proxy.  I'll attach a screenshot of some debugging data.
> In summary; the entity was retrieved via a lazy fetch, appears the be correct, seems to be in the session and yet the exception occurs.
> I've tried to resolve this by re-fetching the object from the session, and a few other tries, with no luck.

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