[Modeling-users] multiplicity constraints, [1,1]

[Mario R. <ma...@ru...>]

Hi,

I have associations where a row of one entity should
always be related to 1 and only 1 row of another entity,
like so:

model.entities = [
   Entity('A', ...),
   Entity('B', ...),
]

model.associations=[
   # A is always related to a B
    Association('A','B',
     relations=['b','as'],
     multiplicity=[ [1,1], [0,None] ],
     delete=['nullify','deny'],
     keys=['fkBId','id'],
   ),
]

However, if i create a row A and not relate it to any B,
saveChanges on the EC is successful, and the "fkBId"
value is NULL (running this with SQLite). I was expecting
that the framework will will throw up on this.
Am I misunderstanding something here?

Cheers, mario