Hibernate version:3.2

I have two classes with many-to-many
A with aid as primary key
B with bid as primary key
The join table(A_B) is not explicitly defined(it does not have its own mapping file). And has the foreign keys as the only two columns coming from their respective tables.
Task at hand is to delete a relationship between a specific A and a specific B(not the A or B objects themselves).
So in non-hibernate way I could do that by

delete from A_B where aid=? and bid=?;

How do I accomplish that in Hibernate?

I have tried A.getList().remove(sess.load(B.class,someid))
In this case it throws me an error ::
a different object with the same identifier value was already associated with the session:

The reason is that I have lazy turned false due to some reasons and when I say load within the delete it tries to load that object but its already there in the memory.
So hhow do I get around this?

The error is thrown because here



you are trying to load that child object twice into the session. An object with "someId" is already present in the session.

Hi gonzao
I know that and I mentioned that already in original post. The question I have is that how go around this situation. How to delete the relationship between two objects(with many to many) where you need to set lazy="false" ?
The above conditions are given and I need to find solution based on those conditions.
Thanks

Create an A.removeChild(String childId) method.
Inside that method, first remove the object from A's inner children collection.
Then issue an HQL query in the line of "delete from Child where childId=?"