home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (SynchronizedSummaryStatistics.java)

This example Java source code file (SynchronizedSummaryStatistics.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

mathillegalstateexception, nullargumentexception, override, statisticalsummary, storelessunivariatestatistic, string, synchronizedsummarystatistics

The SynchronizedSummaryStatistics.java Java example source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.math3.stat.descriptive;

import org.apache.commons.math3.exception.MathIllegalStateException;
import org.apache.commons.math3.exception.NullArgumentException;
import org.apache.commons.math3.util.MathUtils;

/**
 * Implementation of
 * {@link org.apache.commons.math3.stat.descriptive.SummaryStatistics} that
 * is safe to use in a multithreaded environment.  Multiple threads can safely
 * operate on a single instance without causing runtime exceptions due to race
 * conditions.  In effect, this implementation makes modification and access
 * methods atomic operations for a single instance.  That is to say, as one
 * thread is computing a statistic from the instance, no other thread can modify
 * the instance nor compute another statistic.
 *
 * @since 1.2
 */
public class SynchronizedSummaryStatistics extends SummaryStatistics {

    /** Serialization UID */
    private static final long serialVersionUID = 1909861009042253704L;

    /**
     * Construct a SynchronizedSummaryStatistics instance
     */
    public SynchronizedSummaryStatistics() {
        super();
    }

    /**
     * A copy constructor. Creates a deep-copy of the {@code original}.
     *
     * @param original the {@code SynchronizedSummaryStatistics} instance to copy
     * @throws NullArgumentException if original is null
     */
    public SynchronizedSummaryStatistics(SynchronizedSummaryStatistics original)
    throws NullArgumentException {
        copy(original, this);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StatisticalSummary getSummary() {
        return super.getSummary();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void addValue(double value) {
        super.addValue(value);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized long getN() {
        return super.getN();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getSum() {
        return super.getSum();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getSumsq() {
        return super.getSumsq();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getMean() {
        return super.getMean();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getStandardDeviation() {
        return super.getStandardDeviation();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getQuadraticMean() {
        return super.getQuadraticMean();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getVariance() {
        return super.getVariance();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getPopulationVariance() {
        return super.getPopulationVariance();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getMax() {
        return super.getMax();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getMin() {
        return super.getMin();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized double getGeometricMean() {
        return super.getGeometricMean();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized String toString() {
        return super.toString();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void clear() {
        super.clear();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized boolean equals(Object object) {
        return super.equals(object);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized int hashCode() {
        return super.hashCode();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getSumImpl() {
        return super.getSumImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setSumImpl(StorelessUnivariateStatistic sumImpl)
    throws MathIllegalStateException {
        super.setSumImpl(sumImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getSumsqImpl() {
        return super.getSumsqImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setSumsqImpl(StorelessUnivariateStatistic sumsqImpl)
    throws MathIllegalStateException {
        super.setSumsqImpl(sumsqImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getMinImpl() {
        return super.getMinImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setMinImpl(StorelessUnivariateStatistic minImpl)
    throws MathIllegalStateException {
        super.setMinImpl(minImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getMaxImpl() {
        return super.getMaxImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setMaxImpl(StorelessUnivariateStatistic maxImpl)
    throws MathIllegalStateException {
        super.setMaxImpl(maxImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getSumLogImpl() {
        return super.getSumLogImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setSumLogImpl(StorelessUnivariateStatistic sumLogImpl)
    throws MathIllegalStateException {
        super.setSumLogImpl(sumLogImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getGeoMeanImpl() {
        return super.getGeoMeanImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setGeoMeanImpl(StorelessUnivariateStatistic geoMeanImpl)
    throws MathIllegalStateException {
        super.setGeoMeanImpl(geoMeanImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getMeanImpl() {
        return super.getMeanImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setMeanImpl(StorelessUnivariateStatistic meanImpl)
    throws MathIllegalStateException {
        super.setMeanImpl(meanImpl);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized StorelessUnivariateStatistic getVarianceImpl() {
        return super.getVarianceImpl();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void setVarianceImpl(StorelessUnivariateStatistic varianceImpl)
    throws MathIllegalStateException {
        super.setVarianceImpl(varianceImpl);
    }

    /**
     * Returns a copy of this SynchronizedSummaryStatistics instance with the
     * same internal state.
     *
     * @return a copy of this
     */
    @Override
    public synchronized SynchronizedSummaryStatistics copy() {
        SynchronizedSummaryStatistics result =
            new SynchronizedSummaryStatistics();
        // No try-catch or advertised exception because arguments are guaranteed non-null
        copy(this, result);
        return result;
    }

    /**
     * Copies source to dest.
     * <p>Neither source nor dest can be null.

* <p>Acquires synchronization lock on source, then dest before copying.

* * @param source SynchronizedSummaryStatistics to copy * @param dest SynchronizedSummaryStatistics to copy to * @throws NullArgumentException if either source or dest is null */ public static void copy(SynchronizedSummaryStatistics source, SynchronizedSummaryStatistics dest) throws NullArgumentException { MathUtils.checkNotNull(source); MathUtils.checkNotNull(dest); synchronized (source) { synchronized (dest) { SummaryStatistics.copy(source, dest); } } } }

Other Java examples (source code examples)

Here is a short list of links related to this Java SynchronizedSummaryStatistics.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.