UniformIntegerGenerator.java
537c0226c957async

UniformIntegerGenerator.java
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			/**
			* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
			*
			* 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. See accompanying
			* LICENSE file.
			*/

			package com.yahoo.ycsb;

			import java.util.Random;

			/**
			* Generates integers randomly uniform from an interval.
			*/
			public class UniformIntegerGenerator extends IntegerGenerator
			{
			Random _random;
			int _lb,_ub,_interval;

			/**
			* Creates a generator that will return integers uniformly randomly from the interval [lb,ub] inclusive (that is, lb and ub are possible values)
			*
			* @param lb the lower bound (inclusive) of generated values
			* @param ub the upper bound (inclusive) of generated values
			*/
			public UniformIntegerGenerator(int lb, int ub)
			{
			_random=new Random();
			_lb=lb;
			_ub=ub;
			_interval=_ub-_lb+1;
			}

			@Override
			public int nextInt()
			{
			int ret=_random.nextInt(_interval)+_lb;
			setLastInt(ret);

			return ret;
			}

			}