grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.common.Terminals
generate myDsl 

Root:
	'root' name=ROOT_FQN ('extends' parentRoot=[Root|ROOT_FQN])? '{'
	('Values-Catalog' '{'
	values+=(Values)*
	'}')?
	('Models-Catalog' '{'
	models+=(Model)*)?
	'}'
	'}';

Values:
	StringValue | ModelValue;

StringValue:
	name=ID type='string' (array?='[' length=INT ']')?;

ModelValue:
	name=ID type=[Model|MODEL_FQN] (description=STRING)? ;

Model:
	type=('data' | 'static')? name=ID ('extends' parentModel=[Model|MODEL_FQN])? '{'
	data+=Data*
	'}';
Data:
	name=ID;

terminal VERSION:
	INT '.' INT '.' INT;
terminal ROOT_FQN:
	ID '-' VERSION;
terminal MODEL_FQN:
	ROOT_FQN '.' ID;

class MyDslScopeProvider extends AbstractMyDslScopeProvider {
	val ePackage = MyDslPackage.eINSTANCE
	
	override getScope(EObject context,EReference reference){
		if(reference == ePackage.model_ParentModel){
			return scopeForParentModel(context as Model, reference)
		}
		if(reference == ePackage.values){
			return scopeForValueParentModel(context,reference);
		}
		return super.getScope(context, reference)
	}
//scope for the parent of a model
	def protected IScope scopeForParentModel(Model context, EReference reference) {
		 val container=context.eContainer as Root;
		 val List<Model> models=newArrayList;
		 setModels(container, models);
		return Scopes::scopeFor(models, [QualifiedName.create((it.eContainer as Root).name , it.name)],IScope.NULLSCOPE) [img]index.php/fa/36091/0/[/img]
	
	}
//scope for model values 
	def protected IScope scopeForValueParentModel(EObject context, EReference reference) {
		val container = context as Root
		val List<Model> entities = newArrayList;
		setModels(container, entities);
		return Scopes::scopeFor(entities, [QualifiedName.create((it.eContainer as Root).name, it.name)],
			IScope.NULLSCOPE);

	}
//recursive method that will store all the models from the root hierarchy in the models list
	def protected void setModels(Root context, List<Model> models) {
		models.addAll(context.models);
		if (context.parentRoot !== null) {
			setModels(context.parentRoot, models);
		}
	}
	
}

def protected IScope scopeForParentModel(Model context, EReference reference) {
		 val container=context.eContainer as Root;
		 val List<Model> models=newArrayList;
		 setModels(container, models);
		return Scopes::scopeFor(models, [
			QualifiedName.create((it.eContainer as Root).name.split("\\.")).append(it.name)
		],IScope.NULLSCOPE)
	
	}

def protected IScope scopeForParentModel(Model context, EReference reference) {
		 val container=context.eContainer as Root;
		 val List<Model> models=newArrayList;
		 setModels(container, models);
		return Scopes::scopeFor(models, [
			converter.toQualifiedName((it.eContainer as Root).name + "."+it.name)
		],IScope.NULLSCOPE)
	
	}
	
	@Inject
	IQualifiedNameConverter converter