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oclAsType for external classes [message #694502]

Fri, 08 July 2011 17:56

Daniel Strueber

Messages: 14
Registered: March 2011

Junior Member

Hey,

Let's say I have an EClass A with a EReference b of the type EClass C that contains an EAttribute d.
A and C are part of different metamodels.

So when I type the following into the Interactive OCL console:

A.b.oclAsType(C).d

"Unrecognized variable: (C)" is returned.
Can't I use an external EClass's features in an OCL expression or am I missing something?

Regards,
Daniel

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Re: oclAsType for external classes [message #694535 is a reply to message #694502]

Fri, 08 July 2011 19:13

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

HI Daniel

Which version of Eclipse OCL are you using? Some versions complain about
a variable for a type.

It should work, but "A.b" seems an unlikely start. A seems to be an
EClass rather than an instance.

Are you sure that the meta-model is in scope? I would expect to see a
MM2::C qualification to specify the package.

Regards

Ed Willink

On 08/07/2011 18:56, forums-noreply@eclipse.org wrote:
> Hey,
>
> Let's say I have an EClass A with a EReference b of the type EClass C
> that contains an EAttribute d.
> A and C are part of different metamodels.
>
> So when I type the following into the Interactive OCL console:
>
> A.b.oclAsType(C).d
>
> "Unrecognized variable: (C)" is returned.
> Can't I use an external EClass's features in an OCL expression or am I
> missing something?
>
> Regards,
> Daniel

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Re: oclAsType for external classes [message #694592 is a reply to message #694535]

Fri, 08 July 2011 22:52

Daniel Strueber

Messages: 14
Registered: March 2011

Junior Member

You're right about A.b not being a proper start, of course I was using an instance rather than the class.

The package qualification was exactly what I couldn't figure out on my own - that did it, thanks for your help!

[Updated on: Fri, 08 July 2011 22:54]

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