Java's Collections and Relational database (and thus Hibernate) relies heavily on being able to distinguish objects in a unified way. In ...
http://www.hibernate.org/109.706.html
http://www.onjava.com/pub/a/onjava/2006/09/13/dont-let-hibernate-steal-your-identity.html?page=1
http://www.hibernate.org/109.html


