001 /* ActivationMonitor.java -- the RMI activation/inactivation event listener 002 Copyright (c) 1996, 1997, 1998, 1999, 2004, 2006 003 Free Software Foundation, Inc. 004 005 This file is part of GNU Classpath. 006 007 GNU Classpath is free software; you can redistribute it and/or modify 008 it under the terms of the GNU General Public License as published by 009 the Free Software Foundation; either version 2, or (at your option) 010 any later version. 011 012 GNU Classpath is distributed in the hope that it will be useful, but 013 WITHOUT ANY WARRANTY; without even the implied warranty of 014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 General Public License for more details. 016 017 You should have received a copy of the GNU General Public License 018 along with GNU Classpath; see the file COPYING. If not, write to the 019 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 020 02110-1301 USA. 021 022 Linking this library statically or dynamically with other modules is 023 making a combined work based on this library. Thus, the terms and 024 conditions of the GNU General Public License cover the whole 025 combination. 026 027 As a special exception, the copyright holders of this library give you 028 permission to link this library with independent modules to produce an 029 executable, regardless of the license terms of these independent 030 modules, and to copy and distribute the resulting executable under 031 terms of your choice, provided that you also meet, for each linked 032 independent module, the terms and conditions of the license of that 033 module. An independent module is a module which is not derived from 034 or based on this library. If you modify this library, you may extend 035 this exception to your version of the library, but you are not 036 obligated to do so. If you do not wish to do so, delete this 037 exception statement from your version. */ 038 039 040 package java.rmi.activation; 041 042 import java.rmi.MarshalledObject; 043 import java.rmi.Remote; 044 import java.rmi.RemoteException; 045 046 /** 047 * The activation and inactivation event listener. The group obtains this 048 * listener via {@link ActivationSystem#activeGroup} and must notify it 049 * when the group objects are activated or inactivated and also when the 050 * whole group becomes inactive. 051 * @author root. 052 */ 053 public interface ActivationMonitor extends Remote 054 { 055 /** 056 * Informs that the object is now active. 057 * 058 * @param id the activation id of the object that is now active 059 * @throws UnknownObjectException is such object is not known in this group 060 * @throws RemoteException if remote call fails 061 */ 062 void activeObject (ActivationID id, MarshalledObject<? extends Remote> obj) 063 throws UnknownObjectException, RemoteException; 064 065 /** 066 * Informs that the object is not inactive. 067 * 068 * @param id the activation id of the object that is now inactive 069 * @throws UnknownObjectException is such object is not known in this group 070 * @throws RemoteException if remote call fails 071 */ 072 void inactiveObject (ActivationID id) 073 throws UnknownObjectException, RemoteException; 074 075 /** 076 * Informs that the whole group is now inactive because all group objects are 077 * inactive. The group will be recreated upon the later request to activate 078 * any object, belonging to the group. 079 * 080 * @param groupId the group id 081 * @param incarnation the group incarnation number 082 * @throws UnknownGroupException if the group id is not known 083 * @throws RemoteException if the remote call fails 084 */ 085 void inactiveGroup (ActivationGroupID groupId, long incarnation) 086 throws UnknownGroupException, RemoteException; 087 }