Source for java.rmi.server.ObjID

   1: /* ObjID.java --
   2:    Copyright (c) 1996, 1997, 1998, 1999, 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: 
  39: package java.rmi.server;
  40: 
  41: import java.io.DataInput;
  42: import java.io.DataOutput;
  43: import java.io.IOException;
  44: import java.io.ObjectInput;
  45: import java.io.ObjectOutput;
  46: import java.io.Serializable;
  47: 
  48: public final class ObjID implements Serializable
  49: {
  50: static final long serialVersionUID = -6386392263968365220L;
  51: 
  52: private static long next = 0x8000000000000000L;
  53: private static final Object lock = ObjID.class;
  54: 
  55: public static final int REGISTRY_ID = 0;
  56: public static final int ACTIVATOR_ID = 1;
  57: public static final int DGC_ID = 2;
  58: 
  59: private long objNum;
  60: private UID space;
  61: 
  62: public ObjID() {
  63:     synchronized (lock) {
  64:         objNum = next++;
  65:     }
  66:     space = new UID();
  67: }
  68: 
  69: public ObjID(int num) {
  70:     objNum = (long)num;
  71:     space = new UID((short)0);
  72: }
  73: 
  74: public void write(ObjectOutput out) throws IOException {
  75:     DataOutput dout = (DataOutput)out;
  76:     dout.writeLong(objNum);
  77:     space.write(dout);
  78: }
  79: 
  80: public static ObjID read(ObjectInput in) throws IOException {
  81:     DataInput din = (DataInput)in;
  82:     ObjID id = new ObjID();
  83:     id.objNum = din.readLong();
  84:     id.space = UID.read(din);
  85:     return (id);
  86: }
  87: 
  88: public int hashCode() {
  89:     return ((int)objNum);
  90: }
  91: 
  92: public boolean equals(Object obj) {
  93:     if (obj instanceof ObjID && this.objNum == ((ObjID)obj).objNum) {
  94:         return (true);
  95:     }
  96:     return (false);
  97: }
  98: 
  99: public String toString() {
 100:     return ("[objNum: " + objNum + ", " + space + "]");
 101: }
 102: 
 103: }