/* * %W% %E% * * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 only, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is * included at /legal/license.txt). * * You should have received a copy of the GNU General Public License * version 2 along with this work; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 or visit www.sun.com if you need additional * information or have any questions. */ package com.sun.jump.module.lifecycle; import com.sun.jump.module.JUMPModuleFactory; /** * JUMPApplicationLifecycleModuleFactory is a factory for * JUMPApplicationLifecycleModule */ public abstract class JUMPApplicationLifecycleModuleFactory extends JUMPModuleFactory { private static JUMPApplicationLifecycleModuleFactory INSTANCE = null; public static JUMPApplicationLifecycleModuleFactory getInstance() { return INSTANCE; } /** * Creates a new instance of JUMPApplicationLifecycleModuleFactory */ protected JUMPApplicationLifecycleModuleFactory() { synchronized (JUMPApplicationLifecycleModuleFactory.class){ if ( INSTANCE == null ) { INSTANCE = this; } } } /** * Returns a JUMPApplicationLifecycleModule for the * lifecycle policy specified. This policy is one of the stated policies * below. * * @param lifecyclePolicy the lifecycle policy for which an appropriate * lifecycle module should be returned. */ public abstract JUMPApplicationLifecycleModule getModule(String lifecyclePolicy); /** * This policy descriptor allows only one live instance of an app * at any given time */ public static final String POLICY_ONE_LIVE_INSTANCE_ONLY = "lifecycle/one-live-instance-only"; }
