@namespace(uri="dmn", prefix="dmn")
package dmn;
 
@gmf.diagram(onefile="true", diagram.extension="dmn")
class DMN {
    val Elements[*] dmn_elements;
    val Requirements[*] dmn_requirements;
}

abstract class Elements{
	attr String name;
}

abstract class IRFrom{
	
}

abstract class KRTo{
	
}

abstract class DBK{
	
}

@gmf.node(figure="figures.Decision", label="name", label.icon="false", size="200,75")
class Decision extends Elements, IRFrom, KRTo, DBK{

}

@gmf.node(figure="figures.BusinessKnowledgeModel", label="name" , label.icon="false", size="200,75")
class Business_knowledge_model extends Elements, KRTo, DBK{
	
}

@gmf.node(figure="figures.InputData", label="name", label.icon="false", size="200,75")
class Input_data extends Elements, IRFrom{
	
}

@gmf.node(figure="figures.KnowledgeSource", label="name", label.icon="false", size="200,75")
class Knowledge_source extends Elements, DBK{
	
}

abstract class Requirements{
	
}

@gmf.link(source="from", target="to", target.decoration="filledclosedarrow", color="0,0,0")
class Information_Requirement extends Requirements{
	ref IRFrom from;
	ref Decision to;
}

@gmf.link(source="from", target="to", target.decoration="arrow", style="dash", color="0,0,0")
class Knowledge_Requirement extends Requirements{
	ref Business_knowledge_model from;
	ref KRTo to;
}

@gmf.link(source="from", target="to", target.decoration="decoration.AuthorityRequirementDecorator", style="dash", color="0,0,0")
class Authority_Requirement extends Requirements{
	ref Elements from;
	ref Elements to;
}

var elements : Collection;
elements = ???