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How to use EcoreSupport? [message #789880]

Fri, 03 February 2012 14:28

Klaus Birken

Messages: 25
Registered: December 2009

Junior Member

Hi,

I am trying to reference entities from an ecore file from my Xtext DSL. The ecore file should be imported. Grammar snippet:

import "http://www.eclipse.org/emf/2002/Ecore" as ecore

// ...
Import:  'import' importURI=STRING;
Entity:  'entity' ec=[ecore::EClass|ID];

The Xtext editor for the DSL doesn't know about the contents of the imported ecore file. How could this be done? I found the EcoreSupport class, but didn't get how to use it.

Thanks in advance, regards,
Klaus

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Re: How to use EcoreSupport? [message #790167 is a reply to message #789880]

Fri, 03 February 2012 22:41

Christian Dietrich

Messages: 14667
Registered: July 2009

Senior Member

Hi,

the EcoreSupport class is only for use in a (Standalone) Mwe(2) Workflow
you problem is another one: the qualified name of an EClass is mypackage.MyEClass which is not parseable as an ID

=> you have to change the grammar to

Entity:  'entity' ec=[ecore::EClass|FQN];
FQN: ID ("." ID)*;

P.s: you might have to file scoping since stuff is exorted under http://my.package.nsuri.MyClass too

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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