While identity management and assignment handlers are related they are not the same.
If you create a class that implements the AssignmentHandler class you can add code there to set the ActorId, or the PooledActors if you want to assign a task to many people.
Then you create a swimlane and use your newly created AssignmentHandler as the swimlanes handler.
Now when you create a Task you give it your new swimlane, and when the process transitions to the task it will fire your assignment handler assigning the task to the people you setup in the handler.
Sorry, I must be geting my wires crossed.
What i'd like to do is have the expresion handler refer to LDAP instead of the standard JBPM identity tables. We are use LDAP to identiy actors of the sytem (or would like to).
Is this possible? Can you make any suggestions
Thanks in advance
This part is not fully configurable yet. Best is to start with reverse tracing the sourcecode.