fr.ms.lang.sync.impl.SyncLongImpl Maven / Gradle / Ivy

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/*
 * This file is part of Log4Jdbc.
 *
 * Log4Jdbc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Log4Jdbc is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Log4Jdbc.  If not, see .
 *
 */
package fr.ms.lang.sync.impl;

import fr.ms.lang.delegate.SyncLong;
import fr.ms.lang.delegate.SyncLongFactory;

/**
 *
 * @see Marco4J
 *
 *
 * @author Marco Semiao
 *
 */
public class SyncLongImpl implements SyncLong {

    private final static SyncLongFactory factory = new Factory();

    private long value;

    public SyncLongImpl() {
	this(0);
    }

    public SyncLongImpl(final long initialValue) {
	this.value = initialValue;
    }

    public long addAndGet(final long delta) {
	value = value + delta;
	return value;
    }

    public long incrementAndGet() {
	final long addValue = addAndGet(1);
	return addValue;
    }

    public long decrementAndGet() {
	final long addValue = addAndGet(-1);
	return addValue;
    }

    public long get() {
	return value;
    }

    public static SyncLongFactory getSyncLongFactory() {
	return factory;
    }

    public int hashCode() {
	final int prime = 31;
	int result = 1;
	result = prime * result + (int) (value ^ (value >>> 32));
	return result;
    }

    public boolean equals(final Object obj) {
	if (this == obj) {
	    return true;
	}
	if (obj == null) {
	    return false;
	}
	if (getClass() != obj.getClass()) {
	    return false;
	}
	final SyncLongImpl other = (SyncLongImpl) obj;
	if (value != other.value) {
	    return false;
	}
	return true;
    }

    private final static class Factory implements SyncLongFactory {

	public SyncLong newLong() {
	    return new SyncLongImpl();
	}

	public SyncLong newLong(final long initialValue) {
	    return new SyncLongImpl(initialValue);
	}
    }
}