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[Xpand] Access EAnnotations [message #763236]

Fri, 09 December 2011 11:54

thomas.kipar

Messages: 13
Registered: July 2011

Junior Member

Hi,

I'm writing a generator that generated code out of a ecore model with Xpand. Things work fine... but now, I want to access annotations attachted to operations defined in the ecore model. What I do is:

«IF op.EAnnotations.exists(e|e.source == "test")»
	«LET op.EAnnotations.selectFirst(e|e.source == "test") AS annotation»
	«annotation.details.selectFirst(e|e.key == "body").value»
	«ENDLET»
«ENDIF»

to access details of a given annotation. Actually this works fine when I execute my workflow, however the xpand editor shows an error "Callable not found:Couldn't find property 'value' for type 'Object'" (the editor says annotation.details is of type List[Object].

I can get rid of the problem marker using the following code:

«IF op.EAnnotations.exists(e|e.source == "test")»
	«LET op.EAnnotations.selectFirst(e|e.source == "test") AS annotation»
		«annotation.details.typeSelect(ecore::EStringToStringMapEntry).selectFirst(e|e.key == "body").value»
	«ENDLET»
«ENDIF»

... but the codegeneration is not working any more with that code (throwing the excpetion: "EvaluationException : Unknown type 'ecore::EStringToStringMapEntry'").

Even if the first code snipped is working, it is not satisfying to have error markers in my xpand files...

Can anybody figure out whats the problem here? Would be glad if someone could help.

Regards,

Thomas

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Re: [Xpand] Access EAnnotations [message #763302 is a reply to message #763236]

Fri, 09 December 2011 14:36

Christian Dietrich

Messages: 14111
Registered: July 2009

Senior Member

Hi,

should this note be op.eAnnotations (with a lower case e)

~Christian

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Fri, 09 December 2011 14:37]

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Re: [Xpand] Access EAnnotations [message #763882 is a reply to message #763302]

Sat, 10 December 2011 20:18

thomas.kipar

Messages: 13
Registered: July 2011

Junior Member

Chrstian,

lower case e isn't working for me at all in that case (it says: Callable not found:Couldn't find property 'eAnnotations' for type 'org::eclipse::emf::ecore::EOperation'). As said before, I am able to access the annotations, however I have trouble accessing the details (key-value entries).

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Re: [Xpand] Access EAnnotations [message #763887 is a reply to message #763882]

Sat, 10 December 2011 20:30

Christian Dietrich

Messages: 14111
Registered: July 2009

Senior Member

Hi,

do you use javabeans metamodel or emf metamodel?
and do you use the same in ide and workflow?

~Christian

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Sat, 10 December 2011 20:35]

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Re: [Xpand] Access EAnnotations [message #763906 is a reply to message #763887]

Sat, 10 December 2011 21:42

thomas.kipar

Messages: 13
Registered: July 2011

Junior Member

Hi,

thanks, you got the problem. I used the javabeans metamodel all the time (but started to mix it up with the emf metamodel). If I switch over to the emf metamodel, it should work (I guess). Is there, on the other hand, a way to access the annotation details using the javabeans metamodel?

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