Source for gnu.java.beans.decoder.DecoderContext

   1: /* gnu.java.beans.decoder.DecoderContext
   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.XMLDecoder;
  41: import java.util.ArrayList;
  42: import java.util.Iterator;
  43: 
  44: /** DecoderContext is a Context implementation which allows access to
  45:  * the XMLDecoder instance itself. This is used for the <java> tag.
  46:  *
  47:  * @author Robert Schuster
  48:  */
  49: public class DecoderContext extends AbstractContext
  50: {
  51:   private XMLDecoder decoder;
  52: 
  53:   public DecoderContext(XMLDecoder xmlDecoder)
  54:   {
  55:     decoder = xmlDecoder;
  56:   }
  57: 
  58:   private ArrayList objects = new ArrayList();
  59: 
  60:   /* (non-Javadoc)
  61:    * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object)
  62:    */
  63:   public void addParameterObject(Object o) throws AssemblyException
  64:   {
  65:     objects.add(o);
  66:   }
  67: 
  68:   /* (non-Javadoc)
  69:    * @see gnu.java.beans.decoder.Context#reportStatement()
  70:    */
  71:   public void notifyStatement(Context outerContext) throws AssemblyException
  72:   {
  73:   }
  74: 
  75:   /* (non-Javadoc)
  76:    * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context)
  77:    */
  78:   public Object endContext(Context outerContext) throws AssemblyException
  79:   {
  80:     return decoder;
  81:   }
  82: 
  83:   /* (non-Javadoc)
  84:    * @see gnu.java.beans.decoder.Context#subContextFailed()
  85:    */
  86:   public boolean subContextFailed()
  87:   {
  88:     return false;
  89:   }
  90: 
  91:   /* (non-Javadoc)
  92:    * @see gnu.java.beans.decoder.Context#set(int, java.lang.Object)
  93:    */
  94:   public void set(int index, Object o) throws AssemblyException
  95:   {
  96:     throw new AssemblyException(new IllegalArgumentException("Set method is not allowed in decoder context."));
  97:   }
  98: 
  99:   /* (non-Javadoc)
 100:    * @see gnu.java.beans.decoder.Context#get(int)
 101:    */
 102:   public Object get(int index) throws AssemblyException
 103:   {
 104:     throw new AssemblyException(new IllegalArgumentException("Get method is not allowed in decoder context."));
 105:   }
 106: 
 107:   /* (non-Javadoc)
 108:    * @see gnu.java.beans.decoder.Context#getResult()
 109:    */
 110:   public Object getResult()
 111:   {
 112:     return decoder;
 113:   }
 114: 
 115:   /** Returns an Iterator that retrieves the assembled objects.
 116:    *
 117:    * @return An Iterator retrieving assembled objects.
 118:    */
 119:   public Iterator iterator()
 120:   {
 121:     return objects.iterator();
 122:   }
 123: 
 124: }