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Re: [xtext-dev] Importing EMF model inside subpackages

Hi Jan,

ntl we should fix
org.eclipse.xtext.xtext.generator.XtextGeneratorResourceSetInitializer.each(ResourceSet,
Class<Type>, (Type)=>void)

which does not handle nested packages.
thus you have to

list all subpackages
with

uritoecore#//..... e.g
import
"platform:/resource/org.xtext.example.mydsl7.model/model/demo.ecore#//b"
as b

~Christian

Am 11.07.16 um 22:48 schrieb Jan Köhnlein:
> Hi Kasper,
> 
> using subpackages in EMF is strongly discouraged, not only with Xtext (even Ed Merks himself considers them evil).
> So the best solution is to split up your nested Ecore model into multiple flat ones.
> 
> Best regards
> Jan
>  
> 
> --
> Dr. Jan Köhnlein
> jan.koehnlein@xxxxxxxxxx
> 
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>> On 11 Jul 2016, at 21:42, kaspergam <kaspergam@xxxxxxxxxxxxx> wrote:
>>
>> Hi all,
>>
>> I am trying to use an existing EMF model as a base for a parser written in XText. However, I am having trouble getting the grammar to build with an ecore model that is in a series of sub-packages- The referenced EObjects are in org/eclipse/january/geometry (org is the top EPackage), where the last nsURI is "http://www.eclipse.org/january/geometry";. There are no errors with the workflow or the grammar, but when generating the Xtext artifacts, there is an error stating that the package "http:/www.eclipse.org/january/geometry" cannot be resolved. I made sure the xtext nature is added to the project, as well as registered the package in the StandaloneSetup class. I should also mention that for dependency reasons, I have the xtext and EMF model code all in the same plugin project. 
>>
>> In my grammar (.xtext file), I simply import the package:
>>
>> import "http://www.eclipse.org/january/geometry";
>>
>> And in the mwe2:
>>
>> referencedResource = "platform:/resource/org.eclipse.january.geometry.model/model/geometry.genmodel
>>
>> And the first error line when generating the artifacts is something like this:
>>
>> 672  [main] ERROR xt.generator.XtextGeneratorLanguage  - [XtextLinkingDiagnostic: null:3 Couldn't resolve reference to EPackage 'http://www.eclipse.org/january/geometry'., XtextLinkingDiagnostic: null:6 Couldn't resolve reference to EClassifier 'Geometry'., XtextLinkingDiagnostic: null:7 Couldn't resolve reference to EClassifier 'Geometry'., XtextLinkingDiagnostic: null:14 Couldn't resolve reference to EClassifier 'Shape'., XtextLinkingDiagnostic: null:15 Couldn't resolve reference to EClassifier 'Shape'., XtextLinkingDiagnostic: null:19 Couldn't resolve reference to EClassifier 'Triangle'., XtextLinkingDiagnostic: null:20 Couldn't resolve reference to EClassifier 'Triangle'., XtextLinkingDiagnostic: null:28 Couldn't resolve reference to EClassifier 'Vertex'., XtextLinkingDiagnostic: null:29 Couldn't resolve reference to EClassifier 'Vertex'.]
>> 674  [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - Problems running workflow org.eclipse.january.model.xtext.GenerateSTL: Problem parsing 'file:/home/k7e/Documents/ICE/dev/eavp/org.eclipse.january.geometry.model/../org.eclipse.january.geometry.model/src/xtext/STL.xtext':
>>
>>
>> Is this because the package I want is a subpackge, and Is it possible to use objects from EMF subpackges? Or should I resturcture the EMF model to not have any subpackges? 
>>
>> Thanks, I appreciate any help on this!
>>
>> Kasper Gammeltoft
>> Oak Ridge National Laboratory
>> Computer Science Research Group
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