SimpleGraphElementFactory.java

// $Id$
/* ====================================================================
 * Copyright (c) 2002-2004, Christophe Labouisse
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 */

package net.ggtools.grand.graph;

/**
 * A basic implementation of {@link net.ggtools.grand.graph.GraphElementFactory}
 * creating {@link net.ggtools.grand.graph.NodeImpl} &
 * {@link net.ggtools.grand.graph.LinkImpl}. Instances of this class are linked
 * to a specific graph.
 *
 * @author Christophe Labouisse
 */
class SimpleGraphElementFactory implements GraphElementFactory {

    /**
     * Field graph.
     */
    private final Graph graph;

    /**
     * Creates a factory instance linked to a specific graph.
     * @param graph Graph
     */
    SimpleGraphElementFactory(final Graph graph) {
        this.graph = graph;
    }

    /**
     * Method createNode.
     * @param nodeName String
     * @return Node
     * @see net.ggtools.grand.graph.GraphElementFactory#createNode(java.lang.String)
     */
    public Node createNode(final String nodeName) {
        return new NodeImpl(nodeName, graph);
    }

    /**
     * Method createLink.
     * @param linkName String
     * @param startNode Node
     * @param endNode Node
     * @return Link
     * @see net.ggtools.grand.graph.GraphElementFactory#createLink(java.lang.String,
     *      net.ggtools.grand.graph.Node, net.ggtools.grand.graph.Node)
     */
    public Link createLink(final String linkName, final Node startNode,
            final Node endNode) {
        return new LinkImpl(linkName, graph, startNode, endNode);
    }

}