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Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc)  » Teneo: problems with HibernatePersistableEList.equal(Object)
Teneo: problems with HibernatePersistableEList.equal(Object) [message #596497] Tue, 05 December 2006 07:57
Ilya Klyuchnikov is currently offline Ilya KlyuchnikovFriend
Messages: 74
Registered: July 2009
Hi all.

When I have some feature in my model which is unordered list it's mapped
as <bag> so in runtime I have HibernatePersistableEList which delegates
to hibernate PersistentBag class. The problem is that PersistantBag
equals() method is:

* Bag does not respect the collection API and do an
* JVM instance comparison to do the equals.
* The semantic is broken not to have to initialize a
* collection for a simple equals() operation.
* @see java.lang.Object#equals(java.lang.Object)
public boolean equals(Object obj) {
return super.equals(obj);

So when I try to compare two features which are
HibernatePersistableLists in runtime I get annoying result.

More: HibernatePersistableList delegating to PersistentBag is not equal
to itself. Why? Cause HibernatePersistableList extends DelegatingEList
that has:

public boolean equals(Object object)
return delegateEquals(object);

protected boolean delegateEquals(Object object)
return delegateList().equals(object);

Imagine that you have HibernatePersistableList myList.
myList.equals(myList) return always false cause calling to equals
results in comparison



Is there any simple workaround or can Teneo implements correct equals()
method in PersistableLists?

Thanks in advance
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