java.beans.beancontext.BeanContext.java Source code

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Here is the source code for java.beans.beancontext.BeanContext.java

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/*
 * Copyright (c) 1997, 2013, 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;

import java.beans.DesignMode;
import java.beans.Visibility;

import java.io.InputStream;
import java.io.IOException;

import java.net.URL;

import java.util.Collection;
import java.util.Locale;

/**
 * <p>
 * The BeanContext acts a logical hierarchical container for JavaBeans.
 * </p>
 *
 * @author Laurence P. G. Cable
 * @since 1.2
 *
 * @see java.beans.Beans
 * @see java.beans.beancontext.BeanContextChild
 * @see java.beans.beancontext.BeanContextMembershipListener
 * @see java.beans.PropertyChangeEvent
 * @see java.beans.DesignMode
 * @see java.beans.Visibility
 * @see java.util.Collection
 */

@SuppressWarnings("rawtypes")
public interface BeanContext extends BeanContextChild, Collection, DesignMode, Visibility {

    /**
     * Instantiate the javaBean named as a
     * child of this {@code BeanContext}.
     * The implementation of the JavaBean is
     * derived from the value of the beanName parameter,
     * and is defined by the
     * {@code java.beans.Beans.instantiate()} method.
     *
     * @return a javaBean named as a child of this
     * {@code BeanContext}
     * @param beanName The name of the JavaBean to instantiate
     * as a child of this {@code BeanContext}
     * @throws IOException if an IO problem occurs
     * @throws ClassNotFoundException if the class identified
     * by the beanName parameter is not found
     */
    Object instantiateChild(String beanName) throws IOException, ClassNotFoundException;

    /**
     * Analagous to {@code java.lang.ClassLoader.getResourceAsStream()},
     * this method allows a {@code BeanContext} implementation
     * to interpose behavior between the child {@code Component}
     * and underlying {@code ClassLoader}.
     *
     * @param name the resource name
     * @param bcc the specified child
     * @return an {@code InputStream} for reading the resource,
     * or {@code null} if the resource could not
     * be found.
     * @throws IllegalArgumentException if
     * the resource is not valid
     */
    InputStream getResourceAsStream(String name, BeanContextChild bcc) throws IllegalArgumentException;

    /**
     * Analagous to {@code java.lang.ClassLoader.getResource()}, this
     * method allows a {@code BeanContext} implementation to interpose
     * behavior between the child {@code Component}
     * and underlying {@code ClassLoader}.
     *
     * @param name the resource name
     * @param bcc the specified child
     * @return a {@code URL} for the named
     * resource for the specified child
     * @throws IllegalArgumentException
     * if the resource is not valid
     */
    URL getResource(String name, BeanContextChild bcc) throws IllegalArgumentException;

    /**
     * Adds the specified {@code BeanContextMembershipListener}
     * to receive {@code BeanContextMembershipEvents} from
     * this {@code BeanContext} whenever it adds
     * or removes a child {@code Component}(s).
     *
     * @param bcml the BeanContextMembershipListener to be added
     */
    void addBeanContextMembershipListener(BeanContextMembershipListener bcml);

    /**
     * Removes the specified {@code BeanContextMembershipListener}
     * so that it no longer receives {@code BeanContextMembershipEvent}s
     * when the child {@code Component}(s) are added or removed.
     *
     * @param bcml the {@code BeanContextMembershipListener}
     * to be removed
     */
    void removeBeanContextMembershipListener(BeanContextMembershipListener bcml);

    /**
     * This global lock is used by both {@code BeanContext}
     * and {@code BeanContextServices} implementors
     * to serialize changes in a {@code BeanContext}
     * hierarchy and any service requests etc.
     */
    public static final Object globalHierarchyLock = new Object();
}