[ojb-users] 1:n mapping with 0 or null

[Juergen L. <jli...@un...>]

Hello,

I have gor a 1:n mapping with two objects a group and its persons
The group has a vector and the person hat an Interface and an long value =
for the groupId
Starting the program, createing users without a group everything is fine.
But if I stop the server and start it again. Then The Person has a =
reference to a group with Id 0
But this group dosn't exist, so there will be an error.

What can I do to solve the problem??