thanks for ur response..... but... its abt adding a custom filter on join
I think you have looked at the next paragraph, please read the previous paragraph titled "Multi-entity filters".
Anyway all you have to do is to add the relations you want to the relationCollection passed to the fetch method.
Also there is an overload for the RelationCollection.Add() which accepts a JoinHint. Possible options are:
None
Inner
Left
Right
Cross