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Child Reference containment/reference problem [message #203595]

Thu, 28 August 2008 05:35

Eclipse User

Originally posted by: thomasgrimson.hotmail.com

Hallo,

how can I define containment based on reference? For example, "A" contains
"B", "A" contains "C", "B" refers to "C". "A" is the domain top element, I
want to show "B"s as nodes (Top Node Reference), containing inside "C"s
(Child Reference). The problem is, "B" does not contain "C", but only
refers to it- how do I specify the Containment Feature of Child Reference
"C"?

Thanks in advance,
Tom

Re: Child Reference containment/reference problem [message #203617 is a reply to message #203595]

Thu, 28 August 2008 06:02

Eclipse User

Hello Tom,

Try using "childrenFeature" pointing to the reference from "B" to "C" for
"C" ChildReference created below "B" node mapping.

-----------------
Alex Shatalin

Re: Child Reference containment/reference problem [message #203663 is a reply to message #203617]

Thu, 28 August 2008 08:31

Eclipse User

Originally posted by: thomasgrimson.hotmail.com

Hello Alex,

first thank you for the quick answer. I tried it, but it does not
validate: "'Containment Feature' must be owned by 'Domain Meta Element' or
its super type of this reference parent Node Mapping".

Here are the mappings: ('A' is domain element in CanvasMapping):
TopNodeReference for 'B'
NodeMapping for 'B'
ChildReference for 'C'
NodeMapping for 'C'

Properties of ChildReference for 'C':
childrenFeature: the reference from B to C
containmentFeature: the containment A contains C

Does the error message imply that the containment should be also from B?

Thank you in advance,
Tom

Re: Child Reference containment/reference problem [message #204831 is a reply to message #203663]

Tue, 09 September 2008 12:10

Eclipse User

Hello Tom,

Wich version of GMF do you use? We have introduced some changes into the
GMF "HEAD" just after release of 2.0, to this use case should be handled
in latest builds from "HEAD" GMF branch only..

-----------------
Alex Shatalin

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