71 lines
2.1 KiB
Java
71 lines
2.1 KiB
Java
/*
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* Copyright (c) 2017, 7u83 <7u83@mail.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package opensesim.util.idgenerator;
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/**
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* Implementation of a simple ID generator to create unique IDs of type long
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*
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* @author 7u83 <7u83@mail.ru>
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*/
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public class LongIDGenerator {
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private long next_id;
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private long start_id;
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/**
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* Initialize the ID generator
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*
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* @param start ID value to start with
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*/
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public LongIDGenerator(long start) {
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start_id=start;
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reset();
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}
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/**
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* Initialize ID Generator with start ID = 0
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*/
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public LongIDGenerator() {
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this(0);
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}
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/**
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* Reset the ID generator
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*/
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public final void reset(){
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next_id = start_id;
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}
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/**
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* Get the next ID
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*
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* @return the next generated ID
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*/
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public synchronized long getNext() {
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return next_id++;
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}
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}
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