Source for java.rmi.activation.ActivationMonitor

   1: /* ActivationMonitor.java -- the RMI activation/inactivation event listener
   2:    Copyright (c) 1996, 1997, 1998, 1999, 2004, 2006
   3:    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., 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: 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.rmi.activation;
  41: 
  42: import java.rmi.MarshalledObject;
  43: import java.rmi.Remote;
  44: import java.rmi.RemoteException;
  45: 
  46: /**
  47:  * The activation and inactivation event listener. The group obtains this 
  48:  * listener via {@link ActivationSystem#activeGroup} and must notify it
  49:  * when the group objects are activated or inactivated and also when the 
  50:  * whole group becomes inactive.
  51:  * @author root.
  52:  */
  53: public interface ActivationMonitor extends Remote
  54: {
  55:   /**
  56:    * Informs that the object is now active.
  57:    * 
  58:    * @param id the activation id of the object that is now active
  59:    * @throws UnknownObjectException is such object is not known in this group
  60:    * @throws RemoteException if remote call fails
  61:    */
  62:   void activeObject (ActivationID id, MarshalledObject obj)
  63:     throws UnknownObjectException, RemoteException;
  64: 
  65:   /**
  66:    * Informs that the object is not inactive.
  67:    * 
  68:    * @param id the activation id of the object that is now inactive
  69:    * @throws UnknownObjectException is such object is not known in this group
  70:    * @throws RemoteException if remote call fails
  71:    */
  72:   void inactiveObject (ActivationID id)
  73:     throws UnknownObjectException, RemoteException;
  74: 
  75:   /**
  76:    * Informs that the whole group is now inactive because all group objects are
  77:    * inactive. The group will be recreated upon the later request to activate
  78:    * any object, belonging to the group.
  79:    * 
  80:    * @param groupId the group id
  81:    * @param incarnation the group incarnation number
  82:    * @throws UnknownGroupException if the group id is not known
  83:    * @throws RemoteException if the remote call fails
  84:    */
  85:   void inactiveGroup (ActivationGroupID groupId, long incarnation)
  86:   throws UnknownGroupException, RemoteException;
  87: }