Best practice for getting UserModule/RoleModule

[sdunstan]

What is the best way to get the UserModule and RoleModule from within a JSF managed bean? I know of three ways: 1) a JNDI lookup 2) service injection 3) from the portlet context attributes "UserModule" and "RoleModule".

Is there a best practice for this?

Thanks

[tekulapallinaresh]

If there are many ways there should be best of all. I think service injection is the best because actions will take place under single transaction unit .

Thanks,
Naresh Kumar Tekulapalli