I have a simple requirement. Let me put thru an example :

class Team {

EntityId entityId;
String name;

}

class EntityId {
long idValue;

}


Now, what I want in the mapping file is that it should take long id of EntityId as primary key. As in my current system , we have been using EntityId object for primary key. Otherwise right now, to keep my existing code uneffected , I have to keep an additional field for long id and then I use this Id for Hibernate work and my code uses existing Entityid code.

<id class=EntityId property=idValue

Something like this...

Never tryed that with ids but you should be able to solve that using a custom UserType