multiplexmappingdefinition.java

JfreeChart 常用图表例子

/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 * 
 * Project Info:  http://www.jfree.org/jcommon/index.html
 *
 * 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;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * -------------------------------
 * MultiplexMappingDefinition.java
 * -------------------------------
 * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: MultiplexMappingDefinition.java,v 1.2 2005/03/04 10:01:44 taqua Exp $
 *
 * Changes 
 * -------
 * 22-Nov-2003 : Initial version
 *  
 */

package org.jfree.xml.util;

import java.util.HashMap;

/**
 * Maps a class to ...
 */
public class MultiplexMappingDefinition {

    /** The class. */
    private Class baseClass;

    /** The attribute name. */
    private String attributeName;
    
    /** The forward mappings. */
    private HashMap forwardMappings;
    
    /** The reverse mappings. */
    private HashMap reverseMappings;

    /**
     * Creates a new mapping definition.
     * 
     * @param baseClass  the class.
     * @param attributeName  the attribute name.
     * @param entries  the entries.
     */
    public MultiplexMappingDefinition(final Class baseClass,
                                      final String attributeName,
                                      final MultiplexMappingEntry[] entries) {
        
        this.attributeName = attributeName;
        this.baseClass = baseClass;
        this.forwardMappings = new HashMap();
        this.reverseMappings = new HashMap();

        for (int i = 0; i < entries.length; i++) {
            final MultiplexMappingEntry entry = entries[i];
            this.forwardMappings.put(entry.getAttributeValue(), entry);
            this.reverseMappings.put(entry.getTargetClass(), entry);
        }
    }

    /**
     * Returns the attribute name.
     * 
     * @return The attribute name.
     */
    public String getAttributeName() {
        return this.attributeName;
    }

    /**
     * Returns the class.
     * 
     * @return The class.
     */
    public Class getBaseClass() {
        return this.baseClass;
    }

    /**
     * Returns a mapping entry for a type.
     * 
     * @param type  the type.
     * 
     * @return The mapping entry.
     */
    public MultiplexMappingEntry getEntryForType(final String type) {
        return (MultiplexMappingEntry) this.forwardMappings.get(type);
    }

    /**
     * Returns a mapping entry for a class.
     * 
     * @param clazz  the class.
     * 
     * @return The mapping entry.
     */
    public MultiplexMappingEntry getEntryForClass(final String clazz) {
        return (MultiplexMappingEntry) this.reverseMappings.get(clazz);
    }
}