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SO Common utility classes

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/*
 * Copyright 2018 Syam Pillai
 *
 * Licensed 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 com.storedobject.common;

import java.util.concurrent.atomic.AtomicLong;

public class Sequencer extends AtomicLong {

    public Sequencer() {
        this(1);
    }

    public Sequencer(long startingNumber) {
        super(startingNumber);
    }

    public long current() {
        return get();
    }

    public long next() {
        if(get() == Long.MAX_VALUE) {
            set(1);
        }
        return getAndIncrement();
    }
}