Source for gnu.CORBA.GIOP.v1_0.RequestHeader

   1: /* RequestHeader.java -- The GIOP 1.0 request message.
   2:    Copyright (C) 2005 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: 
  39: package gnu.CORBA.GIOP.v1_0;
  40: 
  41: import gnu.CORBA.CDR.AbstractCdrInput;
  42: import gnu.CORBA.CDR.AbstractCdrOutput;
  43: import gnu.CORBA.GIOP.ServiceContext;
  44: import gnu.CORBA.GIOP.CodeSetServiceContext;
  45: 
  46: import gnu.java.lang.CPStringBuilder;
  47: 
  48: import org.omg.CORBA.portable.IDLEntity;
  49: 
  50: /**
  51:  * The GIOP 1.0 request message.
  52:  *
  53:  * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
  54:  */
  55: public class RequestHeader
  56:   extends gnu.CORBA.GIOP.RequestHeader
  57:   implements IDLEntity
  58: {
  59:   /**
  60:    * Creates an empty request header, setting requesting principal
  61:    * to byte[] { 'P' }.
  62:    */
  63:   public RequestHeader()
  64:   {
  65:     requesting_principal = new byte[] { 'P' };
  66:   }
  67: 
  68:   /**
  69:    * Set if the sender expects any response to this message.
  70:    */
  71:   public void setResponseExpected(boolean expected)
  72:   {
  73:     response_expected = expected;
  74:   }
  75: 
  76:   /**
  77:    * Return true if response is expected.
  78:    */
  79:   public boolean isResponseExpected()
  80:   {
  81:     return response_expected;
  82:   }
  83: 
  84:   public String bytes(byte[] array)
  85:   {
  86:     CPStringBuilder b = new CPStringBuilder();
  87:     for (int i = 0; i < array.length; i++)
  88:       {
  89:         b.append(Integer.toHexString(array [ i ] & 0xFF));
  90:         b.append(" ");
  91:       }
  92:     return b.toString();
  93:   }
  94: 
  95:   /**
  96:    * Get the string representation of all included contexts.
  97:    */
  98:   public String contexts()
  99:   {
 100:     CPStringBuilder b = new CPStringBuilder();
 101:     for (int i = 0; i < service_context.length; i++)
 102:       {
 103:         b.append(service_context [ i ].toString());
 104:         b.append(' ');
 105:       }
 106:     return b.toString();
 107:   }
 108: 
 109:   /**
 110:    * Reads the header from the stream.
 111:    *
 112:    * Sets the code set of this stream to
 113:    * the code set, specfied in the header.
 114:    *
 115:    * @param in a stream to read from.
 116:    */
 117:   public void read(AbstractCdrInput in)
 118:   {
 119:     service_context = ServiceContext.readSequence(in);
 120:     request_id = in.read_ulong();
 121:     response_expected = in.read_boolean();
 122:     object_key = in.read_sequence();
 123:     operation = in.read_string();
 124:     requesting_principal = in.read_sequence();
 125: 
 126:     in.setCodeSet(CodeSetServiceContext.find(service_context));
 127:   }
 128: 
 129:   /**
 130:    * Return a string representation.
 131:    */
 132:   public String toString()
 133:   {
 134:     return "Request " + request_id + ", call '" + operation + "' on " +
 135:            bytes(object_key) + ", " +
 136:            (response_expected ? "wait response" : "one way") + ", from " +
 137:            bytes(requesting_principal) + contexts();
 138:   }
 139: 
 140:   /**
 141:    * Writes the header to the stream.
 142:    *
 143:    * Sets the code set of this stream to
 144:    * the code set, specfied in the header.
 145:    *
 146:    * @param out a stream to write into.
 147:    */
 148:   public void write(AbstractCdrOutput out)
 149:   {
 150:     ServiceContext.writeSequence(out, service_context);
 151:     out.write_ulong(request_id);
 152:     out.write_boolean(response_expected);
 153:     out.write_sequence(object_key);
 154:     out.write_string(operation);
 155:     out.write_sequence(requesting_principal);
 156: 
 157:     out.setCodeSet(CodeSetServiceContext.find(service_context));
 158:   }
 159: }