I have a map-based ternary association (let's say a table ABC linking tables A, B and C) and the following mapping:



Calling:
instanceOfA.getMyMap().get(instanceOfB)
works fine...but I do not understand why it always returns a single object and not a collection (whose size possibly > 1) !

As in a ternary association the 3-uple (id_A, id_B, id_C) is the "semantic" primary key,
it seems obvious that there is possibly more than a single entry matching: (id_A, id_B, *):
instanceOfA.getMyMap().get(instanceOfB) => *
Therefore I would expect * as being a collection...Right ??

What could be a possible solution to handle collections at the C-side ?

Thanks in advance.

Hi,

I have the same question. I can get a Map<<Object, Object>> but not a Map<<Object, Set>>.

Is the Map<<Object, Set>> possible in hibernate?

Thanks

Hi,
I am having the same probelm. Please give a solution ?

Hi.
I totally agree with you, if we are working with a ternary association there should be a set of values instead of a single value!!!! I think this is a terrible bug or mistake.
I'm having exactly the same problem. Please have anybodu solved this issue????
Please!