/*
* Copyright 2009 Red Hat, Inc.
* Red Hat licenses this file to you 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 org.hornetq.tests.util;
import java.util.Random;
import java.util.UUID;
import javax.transaction.xa.Xid;
import org.hornetq.api.core.SimpleString;
import org.hornetq.core.transaction.impl.XidImpl;
/**
* @author <a href="mailto:jmesnil@redhat.com">Jeff Mesnil</a>
*
* @version <tt>$Revision$</tt>
*
*/
public class RandomUtil
{
// Constants -----------------------------------------------------
private static final Random random = new Random(System.currentTimeMillis());
// Attributes ----------------------------------------------------
// Static --------------------------------------------------------
public static String randomString()
{
return UUID.randomUUID().toString();
}
public static SimpleString randomSimpleString()
{
return new SimpleString(RandomUtil.randomString());
}
public static char randomChar()
{
return RandomUtil.randomString().charAt(0);
}
public static long randomLong()
{
return RandomUtil.random.nextLong();
}
public static long randomPositiveLong()
{
return Math.abs(RandomUtil.randomLong());
}
public static int randomInt()
{
return RandomUtil.random.nextInt();
}
public static int randomPositiveInt()
{
return Math.abs(RandomUtil.randomInt());
}
public static int randomInterval(final int min, final int max)
{
return min + randomMax(max - min);
}
public static int randomMax(int max)
{
int value = randomPositiveInt() % max;
if (value == 0)
{
value = max;
}
return value;
}
public static int randomPort()
{
return RandomUtil.random.nextInt(65536);
}
public static short randomShort()
{
return (short)RandomUtil.random.nextInt(Short.MAX_VALUE);
}
public static byte randomByte()
{
return Integer.valueOf(RandomUtil.random.nextInt()).byteValue();
}
public static boolean randomBoolean()
{
return RandomUtil.random.nextBoolean();
}
public static byte[] randomBytes()
{
return RandomUtil.randomString().getBytes();
}
public static byte[] randomBytes(final int length)
{
byte[] bytes = new byte[length];
for (int i = 0; i < bytes.length; i++)
{
bytes[i] = RandomUtil.randomByte();
}
return bytes;
}
public static double randomDouble()
{
return RandomUtil.random.nextDouble();
}
public static float randomFloat()
{
return RandomUtil.random.nextFloat();
}
public static Xid randomXid()
{
return new XidImpl(RandomUtil.randomBytes(), RandomUtil.randomInt(), RandomUtil.randomBytes());
}
// Constructors --------------------------------------------------
// Public --------------------------------------------------------
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
}