001/*
002 * JPPF.
003 * Copyright (C) 2005-2018 JPPF Team.
004 * http://www.jppf.org
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.jppf.utils.stats;
020
021import java.util.EventObject;
022
023/**
024 * A statistics event.
025 * @author Laurent Cohen
026 */
027public class JPPFStatisticsEvent extends EventObject {
028  /**
029   * Explicit serialVersionUID.
030   */
031  private static final long serialVersionUID = 1L;
032  /**
033   * The snapshot that was created, removed or updated.
034   */
035  private final JPPFSnapshot snapshot;
036
037  /**
038   * Initialize this event with the specified source statistics and snapshot.
039   * @param statistics the statistics object to whom the snapshot belongs.
040   * @param snapshot the snapshot for which the event occurred.
041   */
042  public JPPFStatisticsEvent(final JPPFStatistics statistics, final JPPFSnapshot snapshot) {
043    super(statistics);
044    this.snapshot = snapshot;
045  }
046
047  /**
048   * Get the statistics source of this event.
049   * @return a {@link JPPFStatistics} instance.
050   */
051  public JPPFStatistics getStatistics() {
052    return (JPPFStatistics) getSource();
053  }
054
055  /**
056   * Get the snapshot that was created, removed or updated.
057   * @return a {@link JPPFSnapshot} instance.
058   */
059  public JPPFSnapshot getSnapshot() {
060    return snapshot;
061  }
062}