001 /* java.beans.beancontext.BeanContextServiceRevokedEvent
002 Copyright (C) 1999, 2000 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package java.beans.beancontext;
040
041 /**
042 * Event fired when services are revoked from a <code>BeanContextServices</code>.
043 *
044 * @author John Keiser
045 * @since JDK1.2
046 * @see java.beans.beancontext.BeanContextServiceRevokedListener
047 */
048
049 public class BeanContextServiceRevokedEvent extends BeanContextEvent {
050 private static final long serialVersionUID = -1295543154724961754L;
051
052 /**
053 * The <code>Class</code> representing the service which is now
054 * available.
055 */
056 protected Class serviceClass;
057 private boolean invalidateRefs;
058
059 /**
060 * Create a new service revoked event.
061 * @param services the <code>BeanContextServices</code> through
062 * which the service was available. This is also the source
063 * of the event.
064 * @param serviceClass the service class that is now revoked.
065 * @param revokeNow whether the revocation is immediate for all
066 * classes or just a suggestion.
067 */
068 public BeanContextServiceRevokedEvent(BeanContextServices services, Class serviceClass, boolean revokeNow) {
069 super(services);
070 this.serviceClass = serviceClass;
071 invalidateRefs = revokeNow;
072 }
073
074 /**
075 * Get the revoked service class.
076 * @return the service class.
077 */
078 public Class getServiceClass() {
079 return serviceClass;
080 }
081
082 /**
083 * Tell whether the revoked service class is the same as the specified class.
084 * Identical to <code>getServiceClass().equals(c)</code>.
085 * @param c the class to compare.
086 * @return whether the clases are equal.
087 */
088 public boolean isServiceClass(Class c) {
089 return serviceClass.equals(c);
090 }
091
092 /**
093 * Get the <code>BeanContextServices</code> through which the service was available.
094 * @return the <code>BeanContextServices</code> through which the
095 * service was available.
096 */
097 public BeanContextServices getSourceAsBeanContextServices() {
098 return (BeanContextServices)getSource();
099 }
100
101 /**
102 * Tell whether current instances of the revoked service are usable or not.
103 * This is determined by whether the service was revoked
104 * immediately.
105 *
106 * @return whether current instances of the revoked service are
107 * usable.
108 */
109 public boolean isCurrentServiceInvalidNow() {
110 return invalidateRefs;
111 }
112 }