-- File:	GraphDS.cdl
-- Created:	Fri Aug  6 16:39:11 1993
-- Author:	Denis PASCAL
--		<dp@phobox>
---Copyright:	 Matra Datavision 1993


package GraphDS 

    ---Purpose: This  package  <GraphDS> provides  generic  classes to
    --          describe transient graph data structure.

uses Standard,
     MMgt,
     TCollection,
     TColStd

is
    enumeration EntityRole is 
    	OnlyInput, 
    	OnlyOutput, 
    	InputAndOutput
    end EntityRole;
    
    enumeration RelationRole is 
        OnlyFront, 
    	OnlyBack, 
    	FrontAndBack
    end RelationRole;

    class EntityRoleMap instantiates DataMap from TCollection
                                    (Transient  from Standard,
				     EntityRole from GraphDS,
				     MapTransientHasher from TColStd);

    generic class DirectedGraph,
                  Vertex,
		  Edge,
		  VerticesIterator,
		  EdgesIterator;
		 
    
    generic class RelationGraph,
                  Entity,
		  Relation,
    	    	  EntitiesIterator,
                  IncidentEntitiesIterator,
                  RelationsIterator,
                  IncidentRelationsIterator;		  

end GraphDS;