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Home » Modeling » TMF (Xtext) » Xtext Hover Documentation [Duplicate - https://www.eclipse.org/forums/index.php/m/1822037/#msg_18220
Xtext Hover Documentation [Duplicate - https://www.eclipse.org/forums/index.php/m/1822037/#msg_18220 [message #1822040] Wed, 26 February 2020 09:34
Loredana Hozan is currently offline Loredana HozanFriend
Messages: 20
Registered: January 2019
Junior Member
Hello, i have the following grammar:
	('data-dictionary' '{'
	attributes+=(Attribute)*
	'}')?
	('entity-catalog' '{'
	entities+=Entity*
	'}')?
	'}';
Attribute:
	AttributeSimpleType | AttributeEntityType 
Entity:
	(documentation=ML_DOC_COMMENT)?  
        name=ID funcName=STRING '{'
	features+=(Feature)*
'}';
Feature:
	(documentation=ML_DOC_COMMENT)? 
	(type=FeatureAttributeType | type=FeatureEntityType)
FeatureAttributeType:
	(type=[AttributeSimpleType|ID]|type=[AttributeSimpleType|GENERAL_FQN])
FeatureEntityType:
	'entity' (attribute=[AttributeEntityType|ID]|attribute=[AttributeEntityType|GENERAL_FQN]);

I have implemented the IEObjectDocumentationProvider and DefaultEObjectHoverProvider, but when i hover over a feature instead of giving me the doc. of the feature it gives me the doc of the attribute which is contained in the data-dictionary. The object that is passed to the getDocumentation method is of type Attribute. I have debugged and noticed in the EObjectAtOffsetHelper inside the resolveCrossReferencedElement method, the type of the object passed is Feature, but there is a check for the object's representation in the model instance. Since the selected Feature is present as an Attribute the returned object is the Attribute. Is there a way to get the doc of the feature instead of the attribute without having to override that method and get rid of the check?

[Updated on: Wed, 26 February 2020 09:53]

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