1 /*
   2  * Copyright (c) 1998, 2009, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.beans.beancontext;
  27 
  28 import java.beans.beancontext.BeanContextEvent;
  29 
  30 import java.beans.beancontext.BeanContextServices;
  31 
  32 /**
  33  * <p>
  34  * This event type is used by the
  35  * <code>BeanContextServiceRevokedListener</code> in order to
  36  * identify the service being revoked.
  37  * </p>
  38  */
  39 public class BeanContextServiceRevokedEvent extends BeanContextEvent {
  40     private static final long serialVersionUID = -1295543154724961754L;
  41 
  42     /**
  43      * Construct a <code>BeanContextServiceEvent</code>.
  44      * @param bcs the <code>BeanContextServices</code>
  45      * from which this service is being revoked
  46      * @param sc the service that is being revoked
  47      * @param invalidate <code>true</code> for immediate revocation
  48      */
  49     public BeanContextServiceRevokedEvent(BeanContextServices bcs, Class sc, boolean invalidate) {
  50         super((BeanContext)bcs);
  51 
  52         serviceClass    = sc;
  53         invalidateRefs  = invalidate;
  54     }
  55 
  56     /**
  57      * Gets the source as a reference of type <code>BeanContextServices</code>
  58      * @return the <code>BeanContextServices</code> from which
  59      * this service is being revoked
  60      */
  61     public BeanContextServices getSourceAsBeanContextServices() {
  62         return (BeanContextServices)getBeanContext();
  63     }
  64 
  65     /**
  66      * Gets the service class that is the subject of this notification
  67      * @return A <code>Class</code> reference to the
  68      * service that is being revoked
  69      */
  70     public Class getServiceClass() { return serviceClass; }
  71 
  72     /**
  73      * Checks this event to determine whether or not
  74      * the service being revoked is of a particular class.
  75      * @param service the service of interest (should be non-null)
  76      * @return <code>true</code> if the service being revoked is of the
  77      * same class as the specified service
  78      */
  79     public boolean isServiceClass(Class service) {
  80         return serviceClass.equals(service);
  81     }
  82 
  83     /**
  84      * Reports if the current service is being forcibly revoked,
  85      * in which case the references are now invalidated and unusable.
  86      * @return <code>true</code> if current service is being forcibly revoked
  87      */
  88     public boolean isCurrentServiceInvalidNow() { return invalidateRefs; }
  89 
  90     /**
  91      * fields
  92      */
  93 
  94     /**
  95      * A <code>Class</code> reference to the service that is being revoked.
  96      */
  97     protected Class                      serviceClass;
  98     private   boolean                    invalidateRefs;
  99 }