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Mon, 14 May 2012 04:45

Eclipse User

Hi all,

Sorry for asking such a basic question, I am new to both Papyrus and UML but I need to know if it is possible to model this in Papyrus and if yes, how to do it. I attached a picture with the part of the model I need to model.

I have to leave the link like this because I cannot post hyperlinks:
imageshack.us/photo/my-images/151/constraint.png

Thanks in advance,
Augusto

[Updated on: Mon, 14 May 2012 04:46] by Moderator

Re: Constraint XOR [message #872007 is a reply to message #871494]

Tue, 15 May 2012 05:39

Eclipse User

You should probably use an Enumeration in this case.

Class Person{age:Integer, name:String, gender:Gender}
Enumeration Gender{Male, Female}

Re: Constraint XOR [message #872028 is a reply to message #872007]

Tue, 15 May 2012 06:39

Eclipse User

Hi Camille,

Thanks for your answer but from what I gather Enumerations can only contain literals. What I want to represent is that "gender" attribute can be of type Male or Female (which are classes), or bool (a primitive type). This is somehow similar to union types in C "en.wikipedia.org/wiki/Union_(computer_science)". Therefore the XOR constraint, constraining the "gender" attribute to be only one of those types (Male, Female or bool).

The example I gave is valid UML and done in Enterprise Architect, I would like to know if it possible to do the same with Papyrus and how.

Best regards,
Augusto

[Updated on: Tue, 15 May 2012 06:40] by Moderator

Re: Constraint XOR [message #872114 is a reply to message #872028]

Tue, 15 May 2012 09:43

Eclipse User

Hello Augusto,

I have to admit I'm not familiar with this kind of pattern. I guess you can do the same with Papyrus, with the "Constraint" and "Link" elements:

- Create your classes and primitive types
- Draw your "gender" associations
- Add a Constraint to your diagram
- Add a Link between the constraint and each association

Although I'm not sure what the exact semantic of this pattern is (It depends on the exact constraint specification, I guess).

Hope this helps,
Camille

Re: Constraint XOR [message #874650 is a reply to message #872114]

Mon, 21 May 2012 06:13

Eclipse User

Hi Camille,

Thanks for the help, that was exactly what I needed.

Regards,
Augusto

Re: Constraint XOR [message #902060 is a reply to message #872114]

Wed, 15 August 2012 13:12

Eclipse User

On 05/15/2012 03:43 PM, Camille Letavernier wrote:
>
> - Create your classes and primitive types
> - Draw your "gender" associations
> - Add a Constraint to your diagram
> - Add a Link between the constraint and each association
>

I'm not sure what I'm doing wrong, but I can't quite follow the steps
described here. The constraint editor doesn't allow me to just specify
the word xor, like it is done in the picture. I would assume that it
doesn't consider it valid OCL.
I'm not sure if the keyword "xor" alone is valid OCL, but for what I
know a constraint can also contain plain text, so anything should be fine.
Is there anything I can do to change this behavior?

Thanks

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