content: /* ========================================================================
   * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
   * USA.  
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
   * in the United States and other countries.]
   * 
   * ------------------------
   * SimpleObjectFactory.java
   * ------------------------
   * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: SimpleObjectFactory.java,v 1.3 2005/10/18 13:33:53 mungady Exp $
   *
   * Changes 
   * -------
   * 02-Dec-2003 : Initial version
   *  
   */
  
  package org.jfree.xml.util;
  
  import java.util.HashMap;
  
  /**
   * A simple object factory.
   */
  public class SimpleObjectFactory implements ObjectFactory {
  
      /** The object mappings. */
      private HashMap objectMappings;
      
      /** The manual object mappings. */
      private HashMap manualMappings;
      
      /** The multiplex mappings. */
      private HashMap multiplexMappings;
  
      /**
       * Creates a new instance.
       */
      public SimpleObjectFactory() {
          this.objectMappings = new HashMap();
          this.manualMappings = new HashMap();
          this.multiplexMappings = new HashMap();
      }
  
      /**
       * Adds a manual mapping.
       * 
       * @param mapping  the mapping.
       */
      public void addManualMapping(final ManualMappingDefinition mapping) {
          this.manualMappings.put(mapping.getBaseClass(), mapping);
      }
  
      /**
       * Adds a generic handler.
       * 
       * @param handler  the handler.
       */
      public void addGenericHandler(final GenericObjectFactory handler) {
          this.objectMappings.put(handler.getBaseClass(), handler);
      }
  
      /**
       * Adds a multiplex mapping.
       * 
       * @param mplex  the multiplex mapping.
       */
      public void addMultiplexMapping(final MultiplexMappingDefinition mplex) {
          this.multiplexMappings.put(mplex.getBaseClass(), mplex);
      }
  
      /**
       * Clears the mappings.
       */
      public void clear() {
          this.objectMappings.clear();
          this.manualMappings.clear();
          this.multiplexMappings.clear();
      }
  
      /**
       * Returns a factory instance for the given class. The factory is independent
       * from all previously generated instances.
       *
       * @param c the class
       * @return the object factory.
       */
      public GenericObjectFactory getFactoryForClass(final Class c) {
          final GenericObjectFactory factory = (GenericObjectFactory) this.objectMappings.get(c);
          if (factory == null) {
              return null;
          }
          return factory.getInstance();
      }
  
      /**
       * Returns the manual mapping definition for the given class, or null, if
       * not manual definition exists.
       *
       * @param c the class for which to check the existence of the definition
       * @return the manual mapping definition or null.
       */
      public ManualMappingDefinition getManualMappingDefinition(final Class c) {
          return (ManualMappingDefinition) this.manualMappings.get(c);
      }
  
      /**
       * Returns the multiplex definition for the given class, or null, if no
       * such definition exists.
       *
       * @param c the class for which to check the existence of the multiplexer
       * @return the multiplexer for the class, or null if no multiplexer exists.
       */
      public MultiplexMappingDefinition getMultiplexDefinition(final Class c) {
          final MultiplexMappingDefinition definition = (MultiplexMappingDefinition)
          this.multiplexMappings.get(c);
          return definition;
      }
  
      /**
       * Checks, whether a generic handler exists for the given class. This does
       * not check, whether an mapping exists.
       *
       * @param c the class for which to check
       * @return true, if an generic handler is defined, false otherwise.
       */
      public boolean isGenericHandler(final Class c) {
          return this.objectMappings.containsKey(c);
      }
  }
  