Source for gnu.java.beans.decoder.JavaHandler

   1: /* gnu.java.beans.decoder.JavaHandler
   2:    Copyright (C) 2004 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package gnu.java.beans.decoder;
  39: 
  40: import java.beans.ExceptionListener;
  41: import java.util.HashMap;
  42: 
  43: import org.xml.sax.Attributes;
  44: 
  45: /** Wraps a DecoderContext instance.
  46:  *
  47:  * @author Robert Schuster
  48:  */
  49: public class JavaHandler extends AbstractElementHandler
  50: {
  51:   private Context context;
  52:   private HashMap objectMap = new HashMap();
  53:   private ClassLoader classLoader;
  54: 
  55:   /**
  56:    * @param PersistenceParser
  57:    */
  58:   JavaHandler(DummyHandler parent, Context decoderContext,
  59:               ClassLoader cl)
  60:   {
  61:     super(parent, true);
  62: 
  63:     classLoader = cl;
  64: 
  65:     context = decoderContext;
  66: 
  67:   }
  68: 
  69:   protected Context startElement(Attributes attributes, ExceptionListener exceptionListener)
  70:     throws AssemblyException
  71:   {
  72:     // may expect version and class attribute but it not used in JDK
  73:     // so we do either
  74:     return context;
  75:   }
  76: 
  77:   public Object getObject(String objectId)
  78:   {
  79:     return objectMap.get(objectId);
  80:   }
  81: 
  82:   public void putObject(String objectId, Object o)
  83:   {
  84:     if (objectId != null)
  85:       objectMap.put(objectId, o);
  86:   }
  87: 
  88:   public Class instantiateClass(String className)
  89:     throws ClassNotFoundException
  90:   {
  91:     return Class.forName(className, false, classLoader);
  92:   }
  93: }