/*
 *    GeoTools - OpenSource mapping toolkit
 *    http://geotools.org
 *    (C) 2002-2006, GeoTools Project Managment Committee (PMC)
 *    (C) 2002, Refractions Reserach Inc.
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */
package org.geotools.graph.build.opt;

import org.geotools.graph.build.GraphBuilder;
import org.geotools.graph.build.basic.BasicDirectedGraphBuilder;
import org.geotools.graph.structure.Edge;
import org.geotools.graph.structure.Node;
import org.geotools.graph.structure.opt.OptDirectedEdge;
import org.geotools.graph.structure.opt.OptDirectedNode;

/**
 * An implementation of GraphBuilder that builds optimized directed graph 
 * components.
 * 
 * @see org.geotools.graph.structure.opt.OptDirectedNode
 * @see org.geotools.graph.structure.opt.OptDirectedEdge
 * 
 * @author Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net
 *
 * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/extension/graph/src/main/java/org/geotools/graph/build/opt/OptDirectedGraphBuilder.java $
 */
public class OptDirectedGraphBuilder extends BasicDirectedGraphBuilder {
  
  /**
   * Creates an optimized directed node.
   * 
   * @see GraphBuilder#buildNode()
   * @see OptDirectedNode
   */
  public Node buildNode() {
    return(new OptDirectedNode());
  }

  /**
   * Creates an optimized directed edge.
   * 
   * @see GraphBuilder#buildEdge()
   * @see OptDirectedEdge
   */
  public Edge buildEdge(Node nodeA, Node nodeB) {
    return(new OptDirectedEdge((OptDirectedNode)nodeA, (OptDirectedNode)nodeB));
  }
  
}
