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Java example source code file (BeanContextServiceRevokedEvent.java)

This example Java source code file (BeanContextServiceRevokedEvent.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

beancontextevent, beancontextservicerevokedevent, beancontextservices, class

The BeanContextServiceRevokedEvent.java Java example source code

/*
 * Copyright (c) 1998, 2009, 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.beancontext.BeanContextEvent;

import java.beans.beancontext.BeanContextServices;

/**
 * <p>
 * This event type is used by the
 * <code>BeanContextServiceRevokedListener in order to
 * identify the service being revoked.
 * </p>
 */
public class BeanContextServiceRevokedEvent extends BeanContextEvent {
    private static final long serialVersionUID = -1295543154724961754L;

    /**
     * Construct a <code>BeanContextServiceEvent.
     * @param bcs the <code>BeanContextServices
     * from which this service is being revoked
     * @param sc the service that is being revoked
     * @param invalidate <code>true for immediate revocation
     */
    public BeanContextServiceRevokedEvent(BeanContextServices bcs, Class sc, boolean invalidate) {
        super((BeanContext)bcs);

        serviceClass    = sc;
        invalidateRefs  = invalidate;
    }

    /**
     * Gets the source as a reference of type <code>BeanContextServices
     * @return the <code>BeanContextServices from which
     * this service is being revoked
     */
    public BeanContextServices getSourceAsBeanContextServices() {
        return (BeanContextServices)getBeanContext();
    }

    /**
     * Gets the service class that is the subject of this notification
     * @return A <code>Class reference to the
     * service that is being revoked
     */
    public Class getServiceClass() { return serviceClass; }

    /**
     * Checks this event to determine whether or not
     * the service being revoked is of a particular class.
     * @param service the service of interest (should be non-null)
     * @return <code>true if the service being revoked is of the
     * same class as the specified service
     */
    public boolean isServiceClass(Class service) {
        return serviceClass.equals(service);
    }

    /**
     * Reports if the current service is being forcibly revoked,
     * in which case the references are now invalidated and unusable.
     * @return <code>true if current service is being forcibly revoked
     */
    public boolean isCurrentServiceInvalidNow() { return invalidateRefs; }

    /**
     * fields
     */

    /**
     * A <code>Class reference to the service that is being revoked.
     */
    protected Class                      serviceClass;
    private   boolean                    invalidateRefs;
}

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