/* * %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.executive; import com.sun.jump.common.JUMPProcess; import com.sun.jump.message.JUMPMessagingService; import java.util.HashMap; import java.util.Map; /** * JUMPExecutive hosts all the JUMP executive services. * The services are declratively specified * in a file, which allows the executive to be extended with new * services. * * @see com.sun.jump.module.JUMPModule */ public abstract class JUMPExecutive implements JUMPProcess, JUMPMessagingService { private static JUMPExecutive INSTANCE = null; protected Map moduleFactoryMap = null; /** * Returns the singleton executive instance. */ public static JUMPExecutive getInstance() { return INSTANCE; } /** * Creates a new instance of JUMPExecutive */ protected JUMPExecutive() { synchronized (JUMPExecutive.class){ if ( INSTANCE == null ) { INSTANCE = this; } } this.moduleFactoryMap = new HashMap(); } /** * Initialize the executive. This method initializes the list of * modules, by reading the module definitions from a property file. This * method can be overriden to load the modules using some other * mechanism, even possibly hardcoding the list of modules. */ protected void initialize() { } /** * Gets the User input manager configured with the executive. */ public abstract JUMPUserInputManager getUserInputManager(); /** * Gets the Isolate factory configured with the executive. */ public abstract JUMPIsolateFactory getIsolateFactory(); }
