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Dynamic scoping based on ecore reflection and information in the runtime [message #1786005]

Tue, 24 April 2018 06:02

Thomas Petrou

Messages: 12
Registered: April 2018

Junior Member

Hello all,

I am relatively new in xtext so apologize if this is a stupid question. This problem is puzzling me for a few days now.

I am trying to enforce some rules on various elements in a rather generic way e.g. all reference lists should not suggest items they already include, a validation should also check this etc.

Using the reflective ecore API has put into a lot of problems. So the problem maybe the fact i don't fully understand it. So any suggestions about material to help me understand that API would be welcome (e.g. tutorials on how to use it or explanations of what the main classes are and how they are used would be more than appreciated - i i went through javadocs but it seems i am missing some kind of improtant detail)

now to my example.
I am trying to filter the existing scopes suggestions in all reference lists so they don't include elements already in the list. Unfortunately i am getting a cyclic exception. Note that i have tried the filtering through contentassist but it is even more difficult there because i can't figure out how to get the reference to the existing list in a consistent/elegant way.

The grammar

grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.common.Terminals
 
generate myDsl "http://www.xtext.org/example/mydsl/MyDsl"
 
 
 Root:
 	packs +=Package*
 ;
 
Package:
    "package" name=FQN "{"
        elements+=Element*
        
    "}"
;
 
Element:
    {OneElement} "element" name =ID ';'|
    {ManyElements} "elements"  list+=Element* '#'|
    {RefElements}  "refs1" item+= [Element|FQN]*  '!'|
    {RefElements2}  "refs2" item+= [Element|FQN]+  '!'|
    {RefElements3}  "refs3" item+= [Element|FQN]*  '!'
     ;
    
FQN: ID ('.' ID)*;

class MyDslScopeProvider extends AbstractMyDslScopeProvider

override IScope getScope(EObject context, EReference reference) {
	val current_scope = super.getScope(context, reference)
	if(reference.isMany)
	{
		val ref_object = context.eGet(reference)	
		val ref_object_list = ref_object as EList<EObject>
		if(ref_object_list.length>0)
		{
			val new_scope = new FilteringScope(current_scope, [!ref_object_list.contains(EObjectOrProxy)])
			return new_scope
		}
	}
	
	return current_scope
	
}

The sample model

package A
{
	element Elementa1   ;
	element Elementa2    ; 
	elements 
			element Elementa3 ; 
			element Elementa4;  
			elements element Elementa6 ; #
			# 
	 		 
	refs1 Elementa1 Elementa1        !		 
	refs2 Elementa3   !
	refs3 Elementa2 Elementa4!
	element Elementa5;
	
}

The exception

	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:06.099
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
31   [Worker-4] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:06.100
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
32   [Worker-4] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:06.101
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements3.item->RefElements3.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:133)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener$1.exec(XtextReconciler.java:1)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.process(XtextDocument.java:337)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$DocumentListener.performNecessaryUpdates(XtextReconciler.java:130)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.updateContentBeforeRead(XtextDocument.java:249)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:518)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:492)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:133)
	at org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler$2.run(HighlightingReconciler.java:336)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
10344 [Worker-13] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:16.415
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
10348 [Worker-13] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:16.462
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements.item->RefElements.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
10395 [Worker-13] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:16.466
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
10398 [Worker-13] ERROR org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)

!ENTRY org.apache.log4j 4 0 2018-04-24 08:42:16.469
!MESSAGE org.eclipse.xtext.linking.lazy.LazyLinkingResource  - Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.

!STACK 0
org.eclipse.xtext.linking.lazy.LazyLinkingResource$CyclicLinkingException: Cyclic resolution of lazy links : RefElements2.item->RefElements2.item in resource 'platform:/resource/testscoping/test.testscoping'.
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.handleCyclicResolution(LazyLinkingResource.java:302)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:240)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:201)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:261)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.emf.ecore.util.EcoreEList.resolveProxy(EcoreEList.java:206)
	at org.eclipse.emf.ecore.util.EcoreEList.resolve(EcoreEList.java:161)
	at org.eclipse.emf.ecore.util.EObjectResolvingEList.resolve(EObjectResolvingEList.java:60)
	at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:348)
	at org.eclipse.emf.ecore.util.EcoreEList.toArray(EcoreEList.java:229)
	at com.google.common.collect.Iterables.toArray(Iterables.java:295)
	at com.google.common.collect.Iterables.toArray(Iterables.java:290)
	at org.eclipse.xtext.xbase.lib.Conversions.unwrapArray(Conversions.java:195)
	at org.xtext.example.mydsl.scoping.MyDslScopeProvider.getScope(MyDslScopeProvider.java:31)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getScope(DefaultLinkingService.java:59)
	at org.eclipse.xtext.linking.impl.DefaultLinkingService.getLinkedObjects(DefaultLinkingService.java:120)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:247)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.getEObject(LazyLinkingResource.java:222)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.doResolveLazyCrossReference(LazyLinkingResource.java:169)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReference(LazyLinkingResource.java:148)
	at org.eclipse.xtext.linking.lazy.LazyLinkingResource.resolveLazyCrossReferences(LazyLinkingResource.java:134)
	at org.eclipse.xtext.EcoreUtil2.resolveLazyCrossReferences(EcoreUtil2.java:500)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:175)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
	at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
	at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocume


Report message to a moderator

Re: Dynamic scoping based on ecore reflection and information in the runtime [message #1786006 is a reply to message #1786005]

Tue, 24 April 2018 06:10

Christian Dietrich

Messages: 12239
Registered: July 2009

Senior Member

you cannot scope a ref based on itself.

=> if you scope ref you may not read ref.
=> do this with a validation instead

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

Report message to a moderator

Re: Dynamic scoping based on ecore reflection and information in the runtime [message #1786010 is a reply to message #1786006]

Tue, 24 April 2018 06:42

Thomas Petrou

Messages: 12
Registered: April 2018

Junior Member

Thanks for the quick reply. It is good to hear that it is not me!!! :)

Any suggestions on how to achieve the requirement of not showing a suggestion that validations will invalidate? (i understand that validations safeguard the semantics of the model but ideally the user should not be able to do something that is anyway wrong - at this point i am happy with the answer "not with this version of xtext" - i just want to make sure that i am not missing something)

Thank you again !

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Re: Dynamic scoping based on ecore reflection and information in the runtime [message #1786015 is a reply to message #1786010]

Tue, 24 April 2018 07:07

Christian Dietrich

Messages: 12239
Registered: July 2009

Senior Member

you can adapt the content assist (or scoping) and use node model information to do the filtering
(NodeModelUtil... has helpers for working with the node model)

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