How to make a Generalization on Associations?

[mattulla]

Hi All,

in the specification of UML 2.0 it is allowed to generalize associations. I tried that out with the ea, but didn't have any succeed. Does anybody know how to do that?

Best Regards
mattulla

[Jan ´Bary´ Glas]

Superstructure says:
Notation
Any association may be drawn as a diamond (larger than a terminator on a line) with a solid line for each association end
connecting the diamond to the classifier that is the end’s type. An association with more than two ends can only be drawn this way.

[mattulla]

Do I have to use the big Diamonds. I found in a UML-book another solution. I will post two pictures, one is my original and the other one I've got edited with paint. It is like I want to have it.




How to insert a picture correctly? I can't see them on my screen.

[Jan ´Bary´ Glas]

How to insert a picture correctly? I can't see them on my screen.

You must upload the pictures on Internet somewhere, I use free upload server http://imageshack.us/

[mattulla]

You must upload the pictures on Internet somewhere, I use free upload server http://imageshack.us/

Thanks it works. The picture are a little bit small, but I hope its possible to see something on them

[Jan ´Bary´ Glas]

Sorry, I cannot help you. My way of your example would be:

which is following advice from UML Superstructure to use derived roles

[Paolo F Cantoni]

Sorry, I cannot help you. My way of your example would be:

which is following advice from UML Superstructure to use derived roles

mattulla,
In this case "Bary" is right.  If the roles are the some, then you you have derivation by implication.  The /layer - /handler association is implied by the two Generalizations of PipelineLayer and PipelineLayerHandler.

On the other hand, there is a place for actual specialization of Association.  Both of you have indicated the possible renderings.  "Bary's" form is the only one currently do with EA.  If you search the forums you'll see some pronouncements of mine on how the Association "lozenge" is an AssociationClass.  So both renderings are equivalent.

HTH,
Paolo

[Eve]

In addition, version 6.5 of EA allows the specification of association specialisations where one or both ends either "redefines" or "subsets" the corresponding end of the parent association.