-- @name			Simple transformation extension
-- @version			0.5
-- @domains			
-- @authors			Marcos Didonet Del Fabro
-- @date			2007/03/09
-- @description		used to defined simple ATL transformations
-- @see				http://www.eclipse.org/gmt/amw

package mmw_qatl {

	class Module extends WModel{

		-- @subsets wovenModel
		reference inputModels [1-*] container : InModelRef;
	
		-- @subsets wovenModel
		reference outputModels [1-*] container : OutModelRef;
	
		-- @subsets ownedElement
		reference rules [1-*] container : Rule;
	
	}

	-- @welementRefType TransformationElementRef	
	abstract class TModelRef extends WModelRef {
	}
	
	-- @welementRefType TransformationElementRef
	class InModelRef extends TModelRef {
	}

	-- @welementRefType TransformationElementRef
	class OutModelRef extends TModelRef {
	}
	
	-- @wmodelRefType TModelRef
	class TransformationElementRef extends WElementRef {
	}	

	class Rule extends WLink {
		attribute isAbstract : Boolean;
		attribute isRefining : Boolean;

		-- @subsets end		
		reference input container : InputElement;

		-- @subsets end
		reference output [1-*] container : OutputElement;
	}
	
	class InputElement extends WLinkEnd {
		attribute varName : String;
	
		reference condition [0-1] container : Expression;
	}
	
	class OutputElement extends WLinkEnd {
		attribute varName : String;
	
		reference bindings [*] container : Binding;
	}
	
	class Binding extends WLink {
		
		-- @subsets end
		reference target container : ReferredElement;
		
		-- @subsets end
		reference source container : ReferredElement;
		
		-- @subsets child
		reference sourceExp container : MappingExpression;
	
	}
	
	abstract class Expression extends WLink {
	}
	
	class ReferredElement extends WLinkEnd {
	}
	
	abstract class MappingExpression extends WLink {
	}
	
	class OutputLink extends MappingExpression {
		reference output : OutputElement;
	}
	
	class Concatenation extends MappingExpression {	
	
		-- @subsets end
		reference source [1-*]  container : ReferredElement;

	}
	

}