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Bug 369773

Summary:	Ecore Model Editor doesn't work with inferred JvmTypes
Product:	[Modeling] TMF	Reporter:	Oliver L <oliver.libutzki>
Component:	Xtext	Assignee:	Project Inbox <tmf.xtext-inbox>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	normal
Priority:	P3	CC:	sebastian.zarnekow
Version:	2.2.1
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Oliver L

2012-01-26 03:47:48 EST

Build Identifier: 

If you use inferred JvmTypes the model cannot be displayed as an EMF model.

The JdtTypeProviderFactory returns a NullJdtTypeProvider instead of a JdtTypeProvider, because the JavaProject cannot be determined.

The IJavaProjectProvider is responsible for determining a JavaProject from a ResourceSet. Unfortunately there is only one implementation (XtextResourceSetBasedProjectProvider) which only works for instances of XtextResourceSet. In this case I get an instance of org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain$AdapterFactoryEditingDomainResourceSet.

Is there a way to resolve the JavaProject from AdapterFactoryEditingDomainResourceSet?

Reproducible: Always

Comment 1 Sebastian Zarnekow

2012-01-26 03:51:54 EST

You could bind an implementation of the JdtTypeProviderFactory that checks for Is 
AdapterFactoryEditingDomainResourceSet, takes it's first resource, checks for platform:/resource uri and determines the project from the first segment.

Comment 2 Oliver L

2012-01-26 04:17:08 EST

My solution is to bind a IJavaProjectProvider which extends XtextResourceSetBasedProjectProvider and does exactly what you have described. I wonder, if this was a safe operation as my ResourceSet might contain resources located in several projects.

I don't know how the AdapterFactoryEditingDomainResourceSet is initialized. Is the resource which is displayed in my editor tab always the first resource of the ResourceSet?

Comment 3 Sebastian Zarnekow

2012-01-26 04:21:00 EST

(In reply to comment #2)
> My solution is to bind a IJavaProjectProvider which extends
> XtextResourceSetBasedProjectProvider and does exactly what you have described.
> I wonder, if this was a safe operation as my ResourceSet might contain
> resources located in several projects.

Same problem for the IJavaProject that is associated with the XtextResourceSet. See bug 326581
 
> I don't know how the AdapterFactoryEditingDomainResourceSet is initialized. Is
> the resource which is displayed in my editor tab always the first resource of
> the ResourceSet?

Don't know whether that would be mission critical anyway ... Feel free to debug the constructor invocation ;-)

Comment 4 Oliver L

2012-01-26 04:30:48 EST

Ok, the code Ed Willink posted is exactly what I did, too ;-)
Bug 326581 is classified as an enhancement, but I would call it "bug" as you lose the ability to view the inferred EMF model. Don't you think so?

*** This bug has been marked as a duplicate of bug 326581 ***