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Import of Xtext Grammar Model [message #1837039]

Thu, 21 January 2021 05:20

Eclipse User

I want to import the Xtext Grammar EMF model via

	referencedResource = "http://www.eclipse.org/2008/Xtext"

in my MWE2 workflow
Running the workflow yields the error genmodel not found.

How can I work around this problem?

Re: Import of Xtext Grammar Model [message #1837040 is a reply to message #1837039]

Thu, 21 January 2021 05:25

Eclipse User

wonder what the goal of this is.

you can try referencedResource = "platform:/resource/org.eclipse.xtext/org/eclipse/xtext/Xtext.genmodel"
or referencedResource = "classpath:/org/eclipse/xtext/Xtext.genmodel"
or "classpath:/org/eclipse/xtext/Xtext.xtext"
or something like that

[Updated on: Thu, 21 January 2021 06:02] by Moderator

Re: Import of Xtext Grammar Model [message #1837067 is a reply to message #1837040]

Thu, 21 January 2021 10:05

Eclipse User

Christian Dietrich wrote on Thu, 21 January 2021 05:25

you can try referencedResource = "platform:/resource/org.eclipse.xtext/org/eclipse/xtext/Xtext.genmodel"

Thank you very much the first option did it.
Can you explain why the genmodel of Xtext is not registered with its URI ?

Re: Import of Xtext Grammar Model [message #1837069 is a reply to message #1837067]

Thu, 21 January 2021 10:08

Eclipse User

cause referenced resource are not registered by namespace in general

Re: Import of Xtext Grammar Model [message #1837084 is a reply to message #1837069]

Thu, 21 January 2021 15:06

Eclipse User

HI

A GenModel has no Epaxkage so it cannot possibly be registered by its non-existent nsURI.

It is however consistently registered by the following plugin.xml snippet.

  <extension point="org.eclipse.emf.ecore.generated_package">
    <package 
       uri = "http://www.eclipse.org/2008/Xtext" 
       class = "org.eclipse.xtext.XtextPackage"
       genModel = "org/eclipse/xtext/Xtext.genmodel" /> 
  </extension>

that populates a Map accessible by EcorePlugin.getEPackageNsURIToGenModelLocationMap().

Regards

Ed Willink

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