Hi,

When Hibernate replaces Java's list object with it's own implementation upon a call to saveOrUpdate(), what may cause the new list be empty?

What is happening to me is this. I have an object containing a List property. This property is mapped to a list collection:

<list name="stages" lazy="false" table="routing_stage" cascade="all">
<key column="routing_tracker_id"/>
<index column="stage_num" type="int" />
<one-to-many class="edu.ucsd.som.tracker.RoutingStage"/>
</list>

right before a call to saveOrUpdate() "stages" contains a reference to an instance of ArrayList with 3 items (verified in debugger). Right after the call to saveOrUpdate(), "stages" points to an empty list.

What could be causing this?

broken getter?

I can't see how it could be a bug - this is VERY well-tested functionality....

I know it's not a bug and I'm not saying that :) But I have no idea what to look for in my code and where to start looking.

thanks gavin, your broken getter comment put me on the right track.