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link from derived class [message #220292]

Sat, 28 February 2009 19:55

Martin Jacob

Messages: 191
Registered: July 2009

Senior Member

Hi,

I want to create a two links. One is from class A and the other link shall be from class B. And
class be is derived from class A. I need to do so because the shape of the two connections shall be
different.
In class A I defined the link source and target as well. I can draw the class A link between two
nodes. Every thing is fine. But when I want to draw class B link it disappears from the diagram but
is save to the file. Once I open the diagram again both links are visible but both have the shape of
class A.

How can I solve my problem?

Martin

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Re: link from derived class [message #220931 is a reply to message #220292]

Tue, 10 March 2009 13:42

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Martin,

You have to add source end link constraint to a link from "A" like: "self.oclIsKindOf(A)".
This will help GMF realize that a link from B should not be recognized as
a link from A (on the moel level AFAIU these links are identical).

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

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