Hi,
I am ramu, i am getting a problem when persisting data in many to many mapping.

vendor---->industry is many to many mapping

I am taking two industries objects and passing them to one vendor as a collection

Vendor v = manager.find(Vendor.class, 3);
Industry i = manager.find(Industry.class, 2);
Industry i1 = manager.find(Industry.class, 3);
List l1 = new ArrayList();
l1.add(i);
l1.add(i1);
v.setIndustries(l1);
v.getIndustries().add(i);
i.getVendors().add(v);
manager.persist(v);

it is adding only one row in join table.but it should add two records for vendor 3

any help please
Thank you
KRamu