Source for gnu.java.beans.decoder.DummyContext

   1: /* gnu.java.beans.decoder.DummyContext
   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: /** The DummyContext is used as the Context implementation for the DummyHandler. It
  41:  * just prevents having a null-reference.
  42:  *
  43:  * <p>When the implementation is correct none of this class' methods
  44:  * (except <code>notifyStatement()</code>) is called.</p>
  45:  *
  46:  * @author Robert Schuster
  47:  */
  48: public class DummyContext extends AbstractContext
  49: {
  50:     /* (non-Javadoc)
  51:      * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object)
  52:      */
  53:     public void addParameterObject(Object o) throws AssemblyException
  54:     {
  55:         fail();
  56:     }
  57: 
  58:     /* (non-Javadoc)
  59:      * @see gnu.java.beans.decoder.Context#reportStatement()
  60:      */
  61:     public void notifyStatement(Context outerContext) throws AssemblyException
  62:     {
  63:         // intentionally ignored
  64:     }
  65: 
  66:     /* (non-Javadoc)
  67:      * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context)
  68:      */
  69:     public Object endContext(Context outerContext) throws AssemblyException
  70:     {
  71:         fail();
  72:         return null;
  73:     }
  74: 
  75:     /* (non-Javadoc)
  76:      * @see gnu.java.beans.decoder.Context#subContextFailed()
  77:      */
  78:     public boolean subContextFailed()
  79:     {
  80:         fail();
  81:         return false;
  82:     }
  83: 
  84:     /* (non-Javadoc)
  85:      * @see gnu.java.beans.decoder.Context#set(int, java.lang.Object)
  86:      */
  87:     public void set(int index, Object o) throws AssemblyException
  88:     {
  89:         fail();
  90:     }
  91: 
  92:     /* (non-Javadoc)
  93:      * @see gnu.java.beans.decoder.Context#get(int)
  94:      */
  95:     public Object get(int index) throws AssemblyException
  96:     {
  97:         fail();
  98:         return null;
  99:     }
 100: 
 101:     /* (non-Javadoc)
 102:      * @see gnu.java.beans.decoder.Context#getResult()
 103:      */
 104:     public Object getResult()
 105:     {
 106:         fail();
 107:         return null;
 108:     }
 109: 
 110:     private void fail()
 111:     {
 112:         throw new InternalError("Invoking the DummyContext is not expected"
 113:                                 + " - Please file a bug report at"
 114:                                 + " http://www/gnu.org/software/classpath/.");
 115:     }
 116: }