/* * Copyright (c) 1998, 2002, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 in the LICENSE file that * accompanied this code). * * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.beans.beancontext; /** *
* This interface is implemented by a JavaBean that does * not directly have a BeanContext(Child) associated with * it (via implementing that interface or a subinterface thereof), * but has a public BeanContext(Child) delegated from it. * For example, a subclass of java.awt.Container may have a BeanContext * associated with it that all Component children of that Container shall * be contained within. *
** An Object may not implement this interface and the * BeanContextChild interface * (or any subinterfaces thereof) they are mutually exclusive. *
*
* Callers of this interface shall examine the return type in order to
* obtain a particular subinterface of BeanContextChild as follows:
*
* BeanContextChild bcc = o.getBeanContextProxy();
*
* if (bcc instanceof BeanContext) {
* // ...
* }
*
* or
*
* BeanContextChild bcc = o.getBeanContextProxy();
* BeanContext bc = null;
*
* try {
* bc = (BeanContext)bcc;
* } catch (ClassCastException cce) {
* // cast failed, bcc is not an instanceof BeanContext
* }
*
*
* The return value is a constant for the lifetime of the implementing * instance *
* @author Laurence P. G. Cable * @since 1.2 * * @see java.beans.beancontext.BeanContextChild * @see java.beans.beancontext.BeanContextChildSupport */ public interface BeanContextProxy { /** * Gets theBeanContextChild
(or subinterface)
* associated with this object.
* @return the BeanContextChild
(or subinterface)
* associated with this object
*/
BeanContextChild getBeanContextProxy();
}