/**
* 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.couchbase.loadgen.generator;
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;
}
}