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AQL check if object has feature [message #1792099]

Wed, 11 July 2018 11:07

Wolfgang Geck

Messages: 9
Registered: June 2018

Junior Member

Hello,

could someone post an AQL expression that checks if an EObject instance has a certain feature? In plain Java I would do it like this:

public boolean hasFeature(final EObject self, final String featureName) {
return self.eClass().getEStructuralFeature(featureName) != null;
}

I would even prefer to pass the feature constant as a reference to the appropriate literal in my model package but have no idea how to do that.

Regards
Wolfgang

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Re: AQL check if object has feature [message #1792106 is a reply to message #1792099]

Wed, 11 July 2018 14:32

Pierre-Charles David

Messages: 703
Registered: July 2009

Senior Member

This seems to do what you want:

aql:self.eClass().eAllStructuralFeatures->exists(feature | feature.name = 'theFeatureName')

Pierre-Charles David - Obeo

Need training or professional services for Sirius?
http://www.obeodesigner.com/sirius

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Re: AQL check if object has feature [message #1792139 is a reply to message #1792106]

Thu, 12 July 2018 06:48

Wolfgang Geck

Messages: 9
Registered: June 2018

Junior Member

Hi Pierre-Charles,
thank you, exactly what I needed.
Wolfgang

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