Source for gnu.classpath.jdwp.processor.StringReferenceCommandSet

   1: /* StringReferenceCommandSet.java -- class to implement the StringReference
   2:    Command Set
   3:    Copyright (C) 2005 Free Software Foundation
   4: 
   5: This file is part of GNU Classpath.
   6: 
   7: GNU Classpath is free software; you can redistribute it and/or modify
   8: it under the terms of the GNU General Public License as published by
   9: the Free Software Foundation; either version 2, or (at your option)
  10: any later version.
  11: 
  12: GNU Classpath is distributed in the hope that it will be useful, but
  13: WITHOUT ANY WARRANTY; without even the implied warranty of
  14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15: General Public License for more details.
  16: 
  17: You should have received a copy of the GNU General Public License
  18: along with GNU Classpath; see the file COPYING.  If not, write to the
  19: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20: 02110-1301 USA.
  21: 
  22: Linking this library statically or dynamically with other modules is
  23: making a combined work based on this library.  Thus, the terms and
  24: conditions of the GNU General Public License cover the whole
  25: combination.
  26: 
  27: As a special exception, the copyright holders of this library give you
  28: permission to link this library with independent modules to produce an
  29: executable, regardless of the license terms of these independent
  30: modules, and to copy and distribute the resulting executable under
  31: terms of your choice, provided that you also meet, for each linked
  32: terms of your choice, provided that you also meet, for each linked
  33: independent module, the terms and conditions of the license of that
  34: module.  An independent module is a module which is not derived from
  35: or based on this library.  If you modify this library, you may extend
  36: this exception to your version of the library, but you are not
  37: obligated to do so.  If you do not wish to do so, delete this
  38: exception statement from your version. */
  39: 
  40: 
  41: package gnu.classpath.jdwp.processor;
  42: 
  43: import gnu.classpath.jdwp.JdwpConstants;
  44: import gnu.classpath.jdwp.exception.JdwpException;
  45: import gnu.classpath.jdwp.exception.JdwpInternalErrorException;
  46: import gnu.classpath.jdwp.exception.NotImplementedException;
  47: import gnu.classpath.jdwp.id.ObjectId;
  48: import gnu.classpath.jdwp.util.JdwpString;
  49: 
  50: import java.io.DataOutputStream;
  51: import java.io.IOException;
  52: import java.nio.ByteBuffer;
  53: 
  54: /**
  55:  * A class representing the StringReference Command Set.
  56:  *
  57:  * @author Aaron Luchko <aluchko@redhat.com>
  58:  */
  59: public class StringReferenceCommandSet
  60:   extends CommandSet
  61: {
  62: 
  63:   public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command)
  64:       throws JdwpException
  65:   {
  66:     try
  67:       {
  68: 
  69:         // Although there's only a single command to choose from we still use
  70:         // a switch to maintain consistency with the rest of the CommandSets
  71:         switch (command)
  72:           {
  73:           case JdwpConstants.CommandSet.StringReference.VALUE:
  74:             executeValue(bb, os);
  75:             break;
  76:           default:
  77:             throw new NotImplementedException("Command " + command +
  78:             " not found in String Reference Command Set.");
  79:           }
  80:       }
  81:     catch (IOException ex)
  82:       {
  83:         // The DataOutputStream we're using isn't talking to a socket at all
  84:         // So if we throw an IOException we're in serious trouble
  85:         throw new JdwpInternalErrorException(ex);
  86:       }
  87: 
  88:     return false;
  89:   }
  90: 
  91:   private void executeValue(ByteBuffer bb, DataOutputStream os)
  92:       throws JdwpException, IOException
  93:   {
  94:     ObjectId oid = idMan.readObjectId(bb);
  95: 
  96:     String str = (String) oid.getObject();
  97:     JdwpString.writeString(os, str);
  98:   }
  99: }