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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
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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   *
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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  }