hello,
I use hibernate3 and I have mapped a bidirectionnal many-to-many relationship: A *--------------* B
In database, I have:
A(idA), B(idB) and AB(idA, idB)

How can I delete the link AB without deleting A or B

For example, I would like to delete A, and delete cascade from AB but not to delete B. I there any solution to do this, without entity class AB?

thank you

either pass an instance of AB to Session.delete or

call A.setB(null) // or at least the
call B.setA(null) // owning side
Session.update(A)
Session.update(B)

you can't pass an instance to AB because AB is not a Class or an entity!

and if I set: A.setB(null) --> it deletes B AND AB
I want to delete only the link AB

are you doing anything with the cascade attribute in mapping docuements?

Collaborateur *-------------------RESSOURCE_PROJECT---------------* Project

In Ressource


and in Projet


so there are only two entities
When i delete a Project, I would like to delete the references in table RESSOURCE_PROJECT but not to delele the Ressource
because the lifecycle of a ressource is not linked to a project

... you have two sets, so wouldn't this be Set.remove rather than passing null to a setter?