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    }