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Using Acceleo OCL or AQL for constraints outside Sirius [message #1766286]

Mon, 19 June 2017 22:01

Hallvard Traetteberg

Messages: 673
Registered: July 2009
Location: Trondheim, Norway

Senior Member

I've been using the "standard" OCL support of Ecore for constraints for some time, i.e. the technique where you add a validationDelegate annotation to the package with the providers URI as the value. Now that I'm using Sirius more often, I'm considering a switch to using Acceleo as the OCL engine or perhaps AQL. Is that possible, do these expression language implementations support the Ecore's delegation mechanism? If not, wouldn't that be a good idea? The same goes for derived values and operations.

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Re: Using Acceleo OCL or AQL for constraints outside Sirius [message #1766303 is a reply to message #1766286]

Tue, 20 June 2017 07:21

Yvan Lussaud

Messages: 63
Registered: July 2009

Member

This feature is implemented it should work out of the box in Eclipse. For standalone you will need to register delegates by hand.

http://git.eclipse.org/c/acceleo/org.eclipse.acceleo.git/tree/query/tests/org.eclipse.acceleo.query.tests/src/org/eclipse/acceleo/query/ast/test/delegates/DelegateUtilsTests.java

In this test clas you have an example of Ecore model with delegates. The model is created programmaticaly but you should find needed information.

For standalone use the following check the registration of delegates factories (you should register them by hand if needed):

http://git.eclipse.org/c/acceleo/org.eclipse.acceleo.git/tree/query/tests/org.eclipse.acceleo.query.ide.tests/src/org/eclipse/acceleo/query/ide/tests/delegates/DelegatesRegistrationTests.java

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Re: Using Acceleo OCL or AQL for constraints outside Sirius [message #1766325 is a reply to message #1766303]

Tue, 20 June 2017 08:46

Hallvard Traetteberg

Messages: 673
Registered: July 2009
Location: Trondheim, Norway

Senior Member

That's great! From the test code I assume http://www.eclipse.org/acceleo/query/1.0 is used as the identifier. Is there also an identifier for the MTL (OCL) interpreter?

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