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Reference depending on parent reference [message #932665]

Thu, 04 October 2012 06:01

Eclipse User

Hello,

I have a EClass A, which contains a list of containment reference to EClass B.
On the other side I have a EClass C, which contains a list of containment references to EClass D.

EClass C can reference elements of A.
D can reference elements of B.

Is there a possibility, that if C reference on specific A, that D only can reference on the elements contained by A?

Re: Reference depending on parent reference [message #932710 is a reply to message #932665]

Thu, 04 October 2012 06:56

Eclipse User

John,

Comments below.

On 04/10/2012 12:01 PM, John M. wrote:
> Hello,
>
> I have a EClass A, which contains a list of containment reference to
> EClass B.
> On the other side I have a EClass C, which contains a list of
> containment references to EClass D.
>
> EClass C can reference elements of A.
> D can reference elements of B.
>
> Is there a possibility, that if C reference on specific A, that D only
> can reference on the elements contained by A?
You can always limit the choices made available by D's item provider's
getChoiceOfValues.

Re: Reference depending on parent reference [message #932733 is a reply to message #932665]

Thu, 04 October 2012 07:26

Eclipse User

I can't find that method in the ItemProvider.
I think you mean to overwrite the getChoiceOfValues in the corresponding ItemPropertyDescriptor.

Re: Reference depending on parent reference [message #932750 is a reply to message #932733]

Thu, 04 October 2012 07:46

Eclipse User

Oops, yes.

On 04/10/2012 1:26 PM, John M. wrote:
> I can't find that method in the ItemProvider.
> I think you mean to overwrite the getChoiceOfValues in the
> corresponding ItemPropertyDescriptor.

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