001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    package org.apache.geronimo.management.stats;
018    
019    import javax.management.j2ee.statistics.RangeStatistic;
020    
021    /**
022     * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
023     */
024    public class RangeStatisticImpl extends StatisticImpl implements RangeStatistic {
025        private long highWaterMark;
026        private long lowWaterMark;
027        private long current;
028    
029        public RangeStatisticImpl(String name, String unit, String description) {
030            super(name, unit, description);
031        }
032    
033        public RangeStatisticImpl(String name, String unit, String description, long currentValue) {
034            super(name, unit, description);
035            highWaterMark = lowWaterMark = current = currentValue;
036        }
037    
038        public long getHighWaterMark() {
039            return highWaterMark;
040        }
041    
042        public long getLowWaterMark() {
043            return lowWaterMark;
044        }
045    
046        public long getCurrent() {
047            return current;
048        }
049    
050        public void setCurrent(long current) {
051            this.current = current;
052            if(current < lowWaterMark) {
053                lowWaterMark = current;
054            }
055            if(current > highWaterMark) {
056                highWaterMark = current;
057            }
058        }
059    
060        public void setHighWaterMark(long highWaterMark) {
061            this.highWaterMark = highWaterMark;
062        }
063    
064        public void setLowWaterMark(long lowWaterMark) {
065            this.lowWaterMark = lowWaterMark;
066        }
067    }