[eclipselink-users] ConcurrentModificationException

[Christopher.Mathrusse@xxxxxxxxxx]

I'm having a bit of trouble with a parent-child
relationship. 

public
class
OrderProcess {
  @OneToMany
  @JoinTable(
      name = "ORDER_PROCESS_ADDRESS",

      joinColumns = @JoinColumn(name
= "ORDER_PROCESS_ID"), 
      inverseJoinColumns
= @JoinColumn(name = "ADDRESS_ID"))  
  private List<Address> addresses;

...
}

Address has no reference to the OrderProcess.

I have the small bit of code below:


java.util.List<Address> orderAddresses
= new java.util.ArrayList<Address>();

for(Address address : externalAddresses)
{
  // Get a reference to the entity
  address = addressFacade.findExisting(address.getExternalId(),
address.getNameType(), address.getOrganization(), process.getSourceRecordDate());
  if(!orderAddresses.contains(address))
{
        //
associate it.
        orderAddresses.add(address);
  }
}
         
               
      
// assign the addresses to the process
process.setAddresses(orderAddresses);

Process updated = em.merge(process);


The above works well without any issues
unless the OrderProcess contains addresses prior to entering this code,
and once the transaction attempts to commit I get a ConcurrentModificationException
thrown from EclipseLink.

javax.ejb.TransactionRolledbackLocalException:
Exception thrown from bean; nested exception is: java.util.ConcurrentModificationException
java.util.ConcurrentModificationException
  at java.util.IdentityHashMap$IdentityHashMapIterator.nextIndex(IdentityHashMap.java:715)
  at java.util.IdentityHashMap$KeyIterator.next(IdentityHashMap.java:804)
  at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateChanges(UnitOfWorkImpl.java:567)
  at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.writeChanges(RepeatableWriteUnitOfWork.java:308)
  at org.eclipse.persistence.internal.jpa.EntityManagerImpl.flush(EntityManagerImpl.java:527)
  at com.sun.enterprise.util.EntityManagerWrapper.flush(EntityManagerWrapper.java:331)


I know this must be something to do
with the way that I am performing the assignment of the addresses. So what
am I overlooking or doing incorrectly?

Thanks for the help...