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In my model we have 4 Set<Integer> and we want this list to be populated according to some specific type. I know it is possible if i define the targetEntity in onetomany mapping but in that case i have create Four extra class. I just want to avoid creating these four extra classes. Is there sone solution so that i can define some kind discriminator at onetomany annotation and it populates the correct set depanding upon the discriminator value. Please help.....
Manoj

Though I feel it is really unfair on your part to expect a solution/ reply without providing any significant information (mapping, class structure, etc.) yet...

You can add a where clause in set that would restrict the elements in set. something like

<set name="restrictedSet" table="table" where="discrimnatorColumn='Type1'">
<key column="ID"/>
<one-to-many class="anotherClass" column="_ID"/>
</set>