BeanContext Support
/* * Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import java.beans.beancontext.BeanContextChildSupport; import java.beans.beancontext.BeanContextSupport; /** * A test program that adds a bean to a beancontext, and reports on various * aspects of the context's membership state. This program also shows that a * bean's getBeanContext() method can be called to get a reference to its * enclosing context. */ public class Example1 { private static BeanContextSupport context = new BeanContextSupport(); // The // BeanContext private static BeanContextChildSupport bean = new BeanContextChildSupport(); // The // JavaBean public static void main(String[] args) { report(); // Add the bean to the context System.out.println("Adding bean to context..."); context.add(bean); report(); } private static void report() { // Is the context empty? System.out.println("Is the context empty? " + context.isEmpty()); // Has the context been set for the child bean? boolean result = (bean.getBeanContext() != null); System.out.println("Does the bean have a context yet? " + result); // Number of children in the context System.out.println("Number of children in the context: " + context.size()); // Is the specific bean a member of the context? System.out.println("Is the bean a member of the context? " + context.contains(bean)); // Equality test if (bean.getBeanContext() != null) { boolean isEqual = (bean.getBeanContext() == context); // true means both // references point // to the same // object System.out.println("Contexts are the same? " + isEqual); } } }