001 /* ====================================================================
002 * The Apache Software License, Version 1.1
003 *
004 * Copyright (c) 2003 The Apache Software Foundation. All rights
005 * reserved.
006 *
007 * Redistribution and use in source and binary forms, with or without
008 * modification, are permitted provided that the following conditions
009 * are met:
010 *
011 * 1. Redistributions of source code must retain the above copyright
012 * notice, this list of conditions and the following disclaimer.
013 *
014 * 2. Redistributions in binary form must reproduce the above copyright
015 * notice, this list of conditions and the following disclaimer in
016 * the documentation and/or other materials provided with the
017 * distribution.
018 *
019 * 3. The end-user documentation included with the redistribution,
020 * if any, must include the following acknowledgment:
021 * "This product includes software developed by the
022 * Apache Software Foundation (http://www.apache.org/)."
023 * Alternately, this acknowledgment may appear in the software itself,
024 * if and wherever such third-party acknowledgments normally appear.
025 *
026 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
027 * Foundation" must not be used to endorse or promote products derived
028 * from this software without prior written permission. For written
029 * permission, please contact apache@apache.org.
030 *
031 * 5. Products derived from this software may not be called "Apache",
032 * nor may "Apache" appear in their name, without prior written
033 * permission of the Apache Software Foundation.
034 *
035 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046 * SUCH DAMAGE.
047 * ====================================================================
048 *
049 * This software consists of voluntary contributions made by many
050 * individuals on behalf of the Apache Software Foundation. For more
051 * information on the Apache Software Foundation, please see
052 * <http://www.apache.org/>.
053 *
054 */
055 package org.jpu.patterns.singleton.onePerContext.test;
056
057
058 import org.jpu.patterns.singleton.onePerContext.OnePerContextManager;
059
060 public class Foo {
061 public static void main(String[] argv) throws Throwable {
062 final Object NEW_CTX = new Object();
063
064 Foo.getInstance().setName( "foo1" );;
065 System.out.println( "name=" + Foo.getInstance().getName() );
066 Foo.setCtx( NEW_CTX );
067 try {
068 Foo.getInstance().setName( "foo2" );;
069 System.out.println( "name=" + Foo.getInstance().getName() );
070 }
071 finally {
072 Foo.setCtx( DEFAULT_CTX );
073 }
074 System.out.println( "name=" + Foo.getInstance().getName() );
075 }
076
077 public static final Object DEFAULT_CTX = new Object();
078 public static Foo getInstance() {
079 return (Foo)_opcMgr.getInstance(_ctx.get());
080 }
081 public static void setCtx(Object ctx) {
082 _ctx.set(ctx);
083 }
084 public void setName(String name) {
085 _name = name;
086 }
087 public String getName() {
088 return _name;
089 }
090 private String _name = null;
091 private static ThreadLocal _ctx = new ThreadLocal() {
092 protected Object initialValue() { return DEFAULT_CTX; }
093 };
094 private static OnePerContextManager _opcMgr = new OnePerContextManager(Foo.class);
095 }
096
097