Hi All,
As per DB design i have circular relationship between objects.

for eg,
take,object1,object2 and object3

object1 has many to one relationship with object2 and object2 has many-to-one relationship with object3 and object3 has many-to-one relationship with object1.

Is this mapping scenerio is possible in Hibernate?

Note: all objects having bidirectional relationship between them.
I tried for this mapping and getting Memory out of error.

Help me to solve this issue.


Any sample code please....

Regards
Shanmugam.N

I think that many-to-one is always eagerly loaded, at least in 3.0.x and earlier. So no, that's not a feasible mapping. If you change at least one of the associations to many-to-many unique="true" lazy="proxy" (or lazy="true", if you're using an older version of hibernate), then you can take advantage of lazy loading. That will allow you to implement the relationships that you're describing.

hi tenwit,
Thanx for ur reply.I have solved this problem by set fetch="select" in one many-to-one mapping.(previously it was fetch="join").

we cant use unique="true" for many-to-one(if u use it will take as one-to-one).

i want to know is there any other way to solve this issue..

Thanks in Advance

My suggestion was to use "many-to-many unique="true"", not "many-to-one unique="true"". However, I'll withdraw that suggestion: unqiue many-to-many is one-to-many, not many-to-one. Oh well.