[hibernate-issues] [Hibernate-JIRA] Created: (EJB-236) EntityManager Exception when closing transaction (Fetch.LAZY) takes no affect

[Meinolf (JIRA)]

EntityManager Exception when closing transaction (Fetch.LAZY) takes no affect
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         Key: EJB-236
         URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-236
     Project: Hibernate Entity Manager
        Type: Bug

 Environment: EntityManager 3.2.0.cr3, Sybase
    Reporter: Meinolf
    Priority: Critical
 Attachments: HibernateEntityManagerTest.java, Tras001.java, Tras001Home.java

Hi gurus,
I just played a little bit arround with the Hibernate Entity Manager and found
a bug which is nearly similar to a already closed bug:

http://opensource.atlassian.com/projects/hibernate/browse/EJB-221

I've done an updated of all jar files of the "fix version/s 3.2.0.cr3 but this didn't help.

I'm using EntityManager and reading by id a Project object out of the database which
has a number of oneToMany references within. All references are declared as Fetch.LAZY
but using hibernates EntityManager does this not take into account.

When committing the transaction I get an 
Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.arvato.hibernate.entities.Tras001.tras070 -> com.arvato.hibernate.entities.Tras070
without saving anything, I do just a simple read?!

So we've two errors here, 
1.	Why are Fetch.LAZY things read by default (Affected: EntityManager with annotation configuration and xml configuration as well)
2.	TransientObjectException (Affected: EntityManager with annotation configuration. XML configuration does not throw this but does a read of lazy objects)

I'll attach the Domain Object and the test class to make some things more clear to you.


Cheers
Meinolf

P.S: There is another bug I found a few days ago regarding a wrong binding order of parameters.
Can you please take a look at  http://forum.hibernate.org/viewtopic.php?t=965575
This happens only when using annotation configuration. (Affected: Session and EntityManager)


Here's the full stack trace:

javax.persistence.RollbackException: Error while commiting the transaction
      at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:63)
      at com.arvato.hibernate.entities.test.HibernateEntityManagerTest.load(HibernateEntityManagerTest.java:71)
      at com.arvato.hibernate.entities.test.HibernateEntityManagerTest.main(HibernateEntityManagerTest.java:31)
Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.arvato.hibernate.entities.Tras001.tras070 -> com.arvato.hibernate.entities.Tras070
      at org.hibernate.engine.CascadingAction$9.noCascade(CascadingAction.java:350)
      at org.hibernate.engine.Cascade.cascade(Cascade.java:139)
      at org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:130)
      at org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:121)
      at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:65)
      at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
      at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
      at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
      at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
      at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:53)
      ... 2 more
Exception in thread "main" java.lang.IllegalStateException: Transaction not active
      at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:74)
      at com.arvato.hibernate.entities.test.HibernateEntityManagerTest.load(HibernateEntityManagerTest.java:77)
      at com.arvato.hibernate.entities.test.HibernateEntityManagerTest.main(HibernateEntityManagerTest.java:31)


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