1 /*
   2  * Copyright (c) 2004, 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 sun.jvmstat.monitor.event;
  27 
  28 import java.util.List;
  29 import sun.jvmstat.monitor.MonitoredVm;
  30 
  31 /**
  32  * Provides a description of a change in status of the instrumentation
  33  * exported by the MonitoredVm.
  34  *
  35  * @author Brian Doherty
  36  * @since 1.5
  37  */
  38 public class MonitorStatusChangeEvent extends VmEvent {
  39 
  40     /**
  41      * List of instrumentation objects inserted since the last event.
  42      * Elements of this list will always be of type Monitor.
  43      */
  44     protected List inserted;
  45 
  46     /**
  47      * List of instrumentation objects removed since the last event.
  48      * Elements of this list will always be of type Monitor.
  49      */
  50     protected List removed;
  51 
  52     /**
  53      * Construct a new MonitorStatusChangeEvent.
  54      *
  55      * @param vm the MonitoredVm source of the event.
  56      * @param inserted the list of instrumentation objects inserted since
  57      *                 the last event.
  58      * @param removed the list of instrumentation objects removed since
  59      *                the last event.
  60      */
  61     public MonitorStatusChangeEvent(MonitoredVm vm, List inserted,
  62                                     List removed) {
  63         super(vm);
  64         this.inserted = inserted;
  65         this.removed = removed;
  66     }
  67 
  68     /**
  69      * Return the list of instrumentation objects that were inserted
  70      * since the last event notification.
  71      *
  72      * @return List - a List of Monitor objects that were inserted into the
  73      *                instrumentation exported by the MonitoredHost. If no
  74      *                new instrumentation was inserted, an emply List is
  75      *                returned.
  76      */
  77     public List getInserted() {
  78         return inserted;
  79     }
  80 
  81     /**
  82      * Return the set of instrumentation objects that were removed
  83      * since the last event notification.
  84      *
  85      * @return List - a List of Monitor objects that were removed from the
  86      *                instrumentation exported by the MonitoredHost. If no
  87      *                instrumentation was removed, an emply List is returned.
  88      */
  89     public List getRemoved() {
  90         return removed;
  91     }
  92 }