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tsmets
 Post subject: illegal access to loading collection
PostPosted: Sun Apr 11, 2010 4:06 pm 
Newbie

Joined: Wed Jul 26, 2006 4:18 pm
Posts: 8
Location: Brussels, Belgium
I have a threesome relation :
A Configuration has zero or many Company defined
A Company has zero or many Users defined.
A User is only defined in one Configuration.
All relations are bi-directionnal !

Code:
  _________                                      ___________
|          |                                  /|           |
|  Config  | ----------------------------------| Company   |
|__________|                                  \|___________|
             \                                         |
              \                                        |
               \_                                      |
                |\                                     |                       
                      ____________                     | 
                     |            |\                   |
                     |    User    |------------------
                     |____________|/

Now my problem.
In my unit test, I retrieve a fake config from the DB and try to attach it Companies & Users.
My code does more or less this :
Code:
cfg = Utility.retrieveTestCfg();  // Retrieve a test data from the DB. OK !
tx = session.beginTransaction();
usr = new User("first", "last", ...); // Create a new user. OK !
cpy = new Company("Name", "Street", "City", ...); // Create a new Company. OK !
usr.setCompany(cpy);
usr.setConfig(cfg);
cpy.setConfig(cfg);

This works perfectly when I don't save or when I use newly created instances (line 1 : cfg = new Config("key1", "key2", ...);).
Now, if I do
Code:
session.saveOrUpdate(usr);

I get an exception "while setting Company.Config ..."
If I do
Code:
session.saveOrUpdate(cpy);

I get an exception "while setting User.Config ..."

I don't even have the time to call on the transaction to commit or the sessionto flush ... the exception is thrown before.

:(
This works fine when doing this with newly created instances and persisting them !
All links are lazy (so far).
Choosing a fetch strategy of "join" or "select" does not help.
Would someone have an hint for me ?

tx,

\T,

Full stack trace :
Quote:
org.hibernate.PropertyAccessException: Exception occurred inside setter of my.dotcom.project.dao.CompanyTo.Connector
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:65)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:337)
at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:200)
at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3566)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:129)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854)
at org.hibernate.loader.Loader.doQuery(Loader.java:729)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1994)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:565)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1716)
at org.hibernate.collection.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:454)
at org.hibernate.engine.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:797)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:241)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1860)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42)
at org.hibernate.loader.entity.BatchingEntityLoader.load(BatchingEntityLoader.java:82)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3044)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:395)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:195)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:815)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:808)
at my.dotcom.project.util.TestToolBox.getSapRfcConnectorPersistedTestInstance(TestToolBox.java:52)
at my.dotcom.project.dao.UserDaoTest.check2UsersPersistendedInstancesAreNeverIdentical(UserDaoTest.java:203)
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.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
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$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:42)
... 55 more
Caused by: 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.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:142)
at org.hibernate.collection.PersistentSet.add(PersistentSet.java:187)
at my.dotcom.project.dao.CompanyTo.Connector(CompanyTo.java:660)
... 60 more
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tsmets
 Post subject: Re: illegal access to loading collection
PostPosted: Wed Apr 14, 2010 5:26 am 
Newbie

Joined: Wed Jul 26, 2006 4:18 pm
Posts: 8
Location: Brussels, Belgium
This problem in my case was related to 2 typo's in the Configuration.
Twice, the "id" in the Java code was typed "Id".
What hint me in the right direction ?
Here is more or less what Hibernate was executing :
Quote:
Hibernate: select users0_.CONFIG_ID as CONFIG64_3_, users0_.USER_ID as USER1_3_, users0_.USER_ID as USER1_2_2_, users0_.FieldOne as FieldOne2_2_ ...

The fact that it fetch twice the field USER_ID was annoying me for a while but ... it is only when I did a little piece of code without any link to the legacy I have to map that I realised that this behavior was not the default one ... (+ it was working there --> no bug in Hibernate).
I hope it helps someone else :)
\T,
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