Using user defined Collections

["Lemke, Wesley" <We...@LibertyMutual.com>]

We needed to extend the java.util.ArrayList class for a few of our
collections.  The objects persist fine, but I am getting class cast
exceptions when I try to retrieve the objects:

java.lang.ClassCastException:
org.apache.ojb.broker.util.collections.RemovalAwareCollection

Because we are subclassing from ArrayList, I didn't think that we would
need to use the collection-class attribute of the collection-descriptor
or implement ManageableCollection.  Is this true?

What do I have to do, to use a subclass of ArrayList for my collections?

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