[hibernate-issues] [Hibernate-JIRA] Created: (HHH-6043) PostLoad method invoked before collection initialised

Setanta Mathews (JIRA) noreply at atlassian.com
Wed Mar 23 08:32:08 EDT 2011 

PostLoad method invoked before collection initialised
-----------------------------------------------------

                 Key: HHH-6043
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6043
             Project: Hibernate Core
          Issue Type: Bug
          Components: entity-manager
    Affects Versions: 3.6.2
         Environment: Windows 7 64-bit, hibernate 3.6.2 final, sun java 1.6 64 bit
            Reporter: Setanta Mathews
         Attachments: bugTestCase.rar

Hi,

I had been monitoring this bug under Jboss's https://issues.jboss.org/browse/JBAS-5474 . However the issue was recently closed.

The description for that bug was 

{quote}
I have a bean with a @OneToMany relation mapping like

private List<TherapieeinheitBean> therapieeinheiten;

@OneToMany(
cascade = {CascadeType.REFRESH},
fetch = FetchType.EAGER,
mappedBy="therapiekatalog"
)

with FetchType.EAGER and a simnple @PostLoad like

@PostLoad
public void postLoad() { System.out.println("!!!!!!!!!! postLoad !!!!!!!!!!"); System.out.print("size: " + therapieeinheiten.size()); }

When an entity of this bean is loaded JBoss trows

org.hibernate.LazyInitializationException: illegal access to loading collection
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:341)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:249)
at de.visiodesk.therapiekatalog.TherapiekatalogBean.postLoad(TherapiekatalogBean.java:170)
.
.
.

and prints the messages

WARN [LoadContexts] fail-safe cleanup (collections) : org.hibernate.engine.loading.CollectionLoadContext at 2c8ce9<rs=Ingres-ResultSet[18523]>
WARN [CollectionLoadContext] On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [206] entries

afterwards. The PostLoad method should be called after the data was completely loaded. Is there a workaround for this Problem? I found some other ressources on the net where peole had the same problem, but I saw no resolution, no hint, no workaround.
{quote}

I can confirm that this issue still exists for the Hibernate 3.6.2 release. 

The attached bugTestCase.rar contains a modified version of the test that was originally attached to the JBoss bug. I've changed it to work with spring and JPA. 

Note that the attached test passes as the test is annotated with @Test(expected=PersistenceException.class)

The stack trace from the exception thrown is

{code}
javax.persistence.PersistenceException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection, no session or session was closed
	at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1214)
	at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:635)
	at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:589)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
	at $Proxy18.find(Unknown Source)
	at org.hibernate.bugs.lazyinitexception.LazyInitBug.testAccessAssociatedSetInPostLoad(LazyInitBug.java:48)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.hibernate.LazyInitializationException: failed to lazily initialize a collection, no session or session was closed
	at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:383)
	at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:375)
	at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:122)
	at org.hibernate.collection.PersistentSet.size(PersistentSet.java:162)
	at org.hibernate.bugs.lazyinitexception.Parent.postLoad(Parent.java:42)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:37)
	at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:94)
	at org.hibernate.ejb.event.EntityCallbackHandler.postLoad(EntityCallbackHandler.java:87)
	at org.hibernate.ejb.event.EJB3PostLoadEventListener.onPostLoad(EJB3PostLoadEventListener.java:47)
	at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:250)
	at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:982)
	at org.hibernate.loader.Loader.doQuery(Loader.java:857)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
	at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76)
	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3293)
	at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496)
	at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477)
	at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227)
	at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
	at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
	at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
	at org.hibernate.impl.SessionImpl.get(SessionImpl.java:1005)
	at org.hibernate.impl.SessionImpl.get(SessionImpl.java:998)
	at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:614)
	... 36 more

{code}

A copy of the




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