[jboss-jira] [JBoss JIRA] Created: (HIBERNATE-68) assert collection.remove(this) is fail

[Mike Khlu (JIRA)]

assert collection.remove(this) is fail
--------------------------------------

                 Key: HIBERNATE-68
                 URL: http://jira.jboss.com/jira/browse/HIBERNATE-68
             Project: Hibernate
          Issue Type: Task
            Reporter: Mike Khlu
         Assigned To: Steve Ebersole
            Priority: Minor


I've got simple ManyToMany case

class A {
  @ManyToMany
  Set<B> bes=...;
}

class B {
  @ManyToMany(mappedBy="bes")
  Collection<A> aes=...;

  void addAssociation(A newbie){
   // everything is clear. and works well
   ....
  }
  void removeAssociation(A associated){
     assert aes.remove(associated); // works fine
     assert a.bes.remove(this);   // doesn't works !!!
  }
}

if you try to run simple "exploit", you would be unhappy 

void foo(){
  A a = .... // gets poxy from session
  B b = a.iterator().next(); // gets proxy of associated entity by association

  b.removeAssociation(a); // we'll got a fail
} 

Of course, I know the cause:
1. method call would be delegated to entity (target) by proxy
2. so, "this" in method body means entity (target) not a proxy
3. We can't find entity in collection of proxies, in spite of we have proxy with such ID there

What do you think about this issue?


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