libjava/java/io/ObjectStreamConstants.java

   1 /* ObjectStreamConstants.java -- Interface containing constant values
   2    used in reading and writing serialized objects
   3    Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   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., 59 Temple Place, Suite 330, Boston, MA
  20 02111-1307 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 independent module, the terms and conditions of the license of that
  33 module.  An independent module is a module which is not derived from
  34 or based on this library.  If you modify this library, you may extend
  35 this exception to your version of the library, but you are not
  36 obligated to do so.  If you do not wish to do so, delete this
  37 exception statement from your version. */
  38
  39
  40 package java.io;
  41
  42 /**
  43    This interface contains constants that are used in object
  44    serialization.  This interface is used by ObjectOutputStream,
  45    ObjectInputStream, ObjectStreamClass, and possibly other classes.
  46    The values for these constants are specified in Javasoft's "Object
  47    Serialization Specification" TODO: add reference
  48 */
  49 public interface ObjectStreamConstants
  50 {
  51   public final static int PROTOCOL_VERSION_1 = 1;
  52   public final static int PROTOCOL_VERSION_2 = 2;
  53
  54   final static short STREAM_MAGIC = (short)0xaced;
  55   final static short STREAM_VERSION = 5;
  56
  57   final static byte TC_NULL = (byte)112;            //0x70
  58   final static byte TC_REFERENCE = (byte)113;       //0x71
  59   final static byte TC_CLASSDESC = (byte)114;       //0x72
  60   final static byte TC_OBJECT = (byte)115;          //0x73
  61   final static byte TC_STRING = (byte)116;          //0x74
  62   final static byte TC_ARRAY = (byte)117;           //0x75
  63   final static byte TC_CLASS = (byte)118;           //0x76
  64   final static byte TC_BLOCKDATA = (byte)119;       //0x77
  65   final static byte TC_ENDBLOCKDATA = (byte)120;    //0x78
  66   final static byte TC_RESET = (byte)121;           //0x79
  67   final static byte TC_BLOCKDATALONG = (byte)122;   //0x7A
  68   final static byte TC_EXCEPTION = (byte)123;       //0x7B
  69   final static byte TC_LONGSTRING = (byte)124;      //0x7C
  70   final static byte TC_PROXYCLASSDESC = (byte)125;  //0x7D
  71
  72   final static byte TC_BASE = TC_NULL;
  73   final static byte TC_MAX = TC_PROXYCLASSDESC;
  74
  75   final static int baseWireHandle = 0x7e0000;
  76
  77   final static byte SC_WRITE_METHOD = 0x01;
  78   final static byte SC_SERIALIZABLE = 0x02;
  79   final static byte SC_EXTERNALIZABLE = 0x04;
  80   final static byte SC_BLOCK_DATA = 0x08;
  81
  82   final static SerializablePermission SUBSTITUTION_PERMISSION
  83     = new SerializablePermission("enableSubstitution");
  84
  85   final static SerializablePermission SUBCLASS_IMPLEMENTATION_PERMISSION
  86     = new SerializablePermission("enableSubclassImplementation");
  87 }