OK, but to set the fk to B into A I need to retrieve (from the DB would be good I think) the current instance of B.

When you say " you should have two RowKeys " you mean, two calls to the createAssociationTuple method right ?

Guillaume 2012/3/7 Emmanuel Bernard <emmanuel(a)hibernate.org&gt; No, you should have two RowKeys, one for Entity A and one for Entity B (speaking of instances here). AssociationKey represents the navigational info to go from A to B (B to A would be represented by a second AssociationKey object). And what would be stored is the list of navigational info (in your case one to one, the list is of size 0 or 1). The nav info is made of: - the fk from A - the fk to B - optionally the index or map key value The AssociationKey is made of: - the association table name (in your example EntityA) - the asso fk name and value, in your case entityb_id: "abc" On 7 mars 2012, at 17:08, Guillaume SCHEIBEL wrote: > Hello, > > I'm writting the OGM dialect for mongodb and I work on the @OneToOne > association. > When the createTupleAssociation method is called, there is an > AssociationKey parameter which should (I think) represents the object to > which we are associated. > > Let's take a very short example: > > class EntityA { > > @Id > String id; > > @OneToOne > EntityB entityb; > > //with getters, setters, etc. > } > > class EntityB { > @Id > String id; > > //with getters, setters, etc. > } > > Currently, the rowKey object refers to EntityA (with the table name and the > id) and AssociationKey refers to EntityB. But the table property of > AssociationKey is set to entityA and not entityB as it should be. > > Did I miss something or is it a real "bug" ? > > Thanks > Guillaume > _______________________________________________ > hibernate-dev mailing list > hibernate-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev