001 /*
002 * Copyright 1998-2004 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package java.beans.beancontext;
027
028 import java.beans.beancontext.BeanContextEvent;
029
030 import java.beans.beancontext.BeanContextServices;
031
032 /**
033 * <p>
034 * This event type is used by the
035 * <code>BeanContextServiceRevokedListener</code> in order to
036 * identify the service being revoked.
037 * </p>
038 */
039 public class BeanContextServiceRevokedEvent extends BeanContextEvent {
040
041 /**
042 * Construct a <code>BeanContextServiceEvent</code>.
043 * @param bcs the <code>BeanContextServices</code>
044 * from which this service is being revoked
045 * @param sc the service that is being revoked
046 * @param invalidate <code>true</code> for immediate revocation
047 */
048 public BeanContextServiceRevokedEvent(BeanContextServices bcs,
049 Class sc, boolean invalidate) {
050 super ((BeanContext) bcs);
051
052 serviceClass = sc;
053 invalidateRefs = invalidate;
054 }
055
056 /**
057 * Gets the source as a reference of type <code>BeanContextServices</code>
058 * @return the <code>BeanContextServices</code> from which
059 * this service is being revoked
060 */
061 public BeanContextServices getSourceAsBeanContextServices() {
062 return (BeanContextServices) getBeanContext();
063 }
064
065 /**
066 * Gets the service class that is the subject of this notification
067 * @return A <code>Class</code> reference to the
068 * service that is being revoked
069 */
070 public Class getServiceClass() {
071 return serviceClass;
072 }
073
074 /**
075 * Checks this event to determine whether or not
076 * the service being revoked is of a particular class.
077 * @param service the service of interest (should be non-null)
078 * @return <code>true</code> if the service being revoked is of the
079 * same class as the specified service
080 */
081 public boolean isServiceClass(Class service) {
082 return serviceClass.equals(service);
083 }
084
085 /**
086 * Reports if the current service is being forcibly revoked,
087 * in which case the references are now invalidated and unusable.
088 * @return <code>true</code> if current service is being forcibly revoked
089 */
090 public boolean isCurrentServiceInvalidNow() {
091 return invalidateRefs;
092 }
093
094 /**
095 * fields
096 */
097
098 /**
099 * A <code>Class</code> reference to the service that is being revoked.
100 */
101 protected Class serviceClass;
102 private boolean invalidateRefs;
103 }
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