Source for java.rmi.activation.ActivationGroupID

   1: /* ActivationGroupID.java --
   2:    Copyright (c) 1996, 1997, 1998, 1999, 2006 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.activation;
  40: 
  41: import java.io.Serializable;
  42: import java.rmi.server.UID;
  43: 
  44: /**
  45:  * This identifier identifies the activation group inside the scope of its
  46:  * activation system. It also contains (and can provide) the reference to the
  47:  * groups activation system.
  48:  * 
  49:  * @see ActivationSystem#registerGroup(ActivationGroupDesc)
  50:  */
  51: public class ActivationGroupID
  52:     implements Serializable
  53: {
  54:   /**
  55:    * Use SVUID for interoperability.
  56:    */
  57:   static final long serialVersionUID = - 1648432278909740833L;
  58: 
  59:   /**
  60:    * The associated activation system.
  61:    */
  62:   final ActivationSystem system;
  63:   
  64:   /**
  65:    * The object identifier, making the ID unique.
  66:    */
  67:   final UID uid;
  68: 
  69:   /**
  70:    * Create the new activation group id in the scope of the given activation
  71:    * system
  72:    * 
  73:    * @param aSystem the activation system
  74:    */
  75:   public ActivationGroupID(ActivationSystem aSystem)
  76:   {
  77:     system = aSystem;
  78:     uid = new UID();
  79:   }
  80: 
  81:   /**
  82:    * Get the associated activation system
  83:    * 
  84:    * @return the associated activation system
  85:    */
  86:   public ActivationSystem getSystem()
  87:   {
  88:     return system;
  89:   }
  90: 
  91:   /**
  92:    * Get the hash code of the associated activation system.
  93:    */
  94:   public int hashCode()
  95:   {
  96:     return uid.hashCode();
  97:   }
  98: 
  99:   /**
 100:    * Copmare for equality, returns true if the passed object is also the
 101:    * activation group id and its activation system is the same.
 102:    */
 103:   public boolean equals(Object obj)
 104:   {
 105:     if (obj instanceof ActivationGroupID)
 106:       {
 107:         ActivationGroupID that = (ActivationGroupID) obj;
 108:         return uid.equals(that.uid);
 109:       }
 110:     else
 111:       return false;
 112:   }
 113:   
 114:   /**
 115:    * Get the string representation
 116:    */
 117:   public String toString()
 118:   {
 119:     return uid.toString();
 120:   }
 121: 
 122: }