/*
 * Copyright (c) 2010-2012 Grid Dynamics Consulting Services, Inc, All Rights Reserved
 * http://www.griddynamics.com
 *
 * This library is free software; you can redistribute it and/or modify it under the terms of
 * the Apache License; either
 * version 2.0 of the License, or any later version.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.griddynamics.jagger.util.statistics;

import com.griddynamics.jagger.util.statistics.percentiles.PercentilesProcessor;
import org.apache.commons.math.stat.descriptive.SummaryStatistics;

public class StatisticsCalculator {
    private final SummaryStatistics summaryStatistics;
    private final PercentilesProcessor percentilesProcessor;

    public StatisticsCalculator() {
        summaryStatistics = new SummaryStatistics();
        percentilesProcessor = new PercentilesProcessor();
    }

    public void addValue(double value) {
        summaryStatistics.addValue(value);
        percentilesProcessor.addValue(value);
    }

    public void reset() {
        percentilesProcessor.reset();
        summaryStatistics.clear();
    }

    public double getMean() {
        return summaryStatistics.getMean();
    }

    public double getStandardDeviation() {
        return summaryStatistics.getStandardDeviation();
    }

    public double getPercentile(double p) {
        return percentilesProcessor.getPercentile(p);
    }
}