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[EOL] Can we get an example on how to use the closure operation [message #1397412]

Wed, 09 July 2014 13:38

Eclipse User

I know it is porobably more of understanding the whole concept of transitive closures, but an example would help us (at least me) how does this work on Epislon.

Re: [EOL] Can we get an example on how to use the closure operation [message #1397467 is a reply to message #1397412]

Wed, 09 July 2014 15:25

Eclipse User

Hi

There are examples in the OCL specification.

Regards

Ed Willink

On 09/07/2014 18:38, Horacio Hoyos wrote:
> I know it is porobably more of understanding the whole concept of
> transitive closures, but an example would help us (at least me) how
> does this work on Epislon.
>
>

Re: [EOL] Can we get an example on how to use the closure operation [message #1397535 is a reply to message #1397467]

Wed, 09 July 2014 17:40

Eclipse User

Hi Horacio,

Please find an example below:

for (c in EClass.all) {
c.closure(c|c.eSuperTypes).flatten().name.println();
// Same as c.eAllSuperTypes.name.println();
}

Cheers,
Dimitris

Re: [EOL] Can we get an example on how to use the closure operation [message #1397843 is a reply to message #1397535]

Thu, 10 July 2014 04:25

Eclipse User

Hi

Is it the same?

The OCL closure() includes the source(s) and is invoked on a Collection.

Your example appears to be invoked on an Element, which eAllSuperTypes
excludes.

Regards

Ed Willink

On 09/07/2014 22:40, Dimitris Kolovos wrote:
> Hi Horacio,
>
> Please find an example below:
>
> for (c in EClass.all) {
> c.closure(c|c.eSuperTypes).flatten().name.println();
> // Same as c.eAllSuperTypes.name.println();
> }
>
> Cheers,
> Dimitris

Re: [EOL] Can we get an example on how to use the closure operation [message #1397962 is a reply to message #1397843]

Thu, 10 July 2014 08:02

Eclipse User

Hi Ed,

The semantics of "closure" in EOL is (intentionally) somewhat different to OCL. In EOL, "closure" can be invoked both on collections and model elements and the result excludes the object on which it is invoked.

Cheers,
Dimitris

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