RoleMapper with an external LDAP

Question

Dear friends,
We use an external LDAP to store information related to users, groups and roles. We have managed to configure an out of box LDAP Authenticator within our realm for authentication. We wanted some guidance on configuring or writing RoleMapper.
1) What is good practise in terms of storing and managing roles? Is it a common practise to store roles in an external LDAP or do people use Admin console to created roles within the embedded LDAP? The advantage with the Embedded LDAP is definitely that you could use out of the box RoleMapper and the disadvantage is that we could not extend LDAP schema to store hierarchical roles.
2) If we store and manage roles in an external LDAP store, the same one where we store users and groups, could we still use the out of the box role mapper? If not, could someone provide a sample role mapper that uses an external LDAP store.
3) Why WebLogic doesn't provide an out of the box Role Mapper that connects to an external LDAP?

Answer 1

All Users Filter: (&(&(uid=*)(objectclass=person))(!(quitdate=*)))
User From Name Filter: (&(&(uid=%u)(objectclass=person))(!(quitdate=*)))
User Name Attribute: uid
Here you're configuring that uid is the key of your users in OID. And in your case user A and B has the same uid, so the webcenter can login using user B, but when realize a search uid=jack ldap returns the first one.
Make any sense for you?
Hope that I help you