Hi, i give you this sample example :
in case A<---->B [1:n] : the mapping of this bidiractional navigation is guaranted by the use of inverse-foreignkey : Mapping A classe : ---------------------------------------------------- <collection-descriptor name="allB" element-class-ref="B" > <inverse-foreignkey field-ref="aId"/> </collection-descriptor> Mapping B class : ------------------------------ <reference-descriptor name="a" class-ref="A" > <foreignkey field-ref="aId"/> </reference-descriptor> so in case of A<---->B [1:1] i need a bidirectional navigation !!!!! how to use ???? my config : 1. ojb 1.0.3 2. i use the broker (PB-API) Thanks a lot ....