DoubleType.java

/***********************************************************************************************************************
 * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
 *
 * 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 eu.stratosphere.runtime.io.serialization.types;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Random;

public class DoubleType implements SerializationTestType {

	private double value;

	public DoubleType() {
		this.value = 0;
	}

	private DoubleType(double value) {
		this.value = value;
	}

	@Override
	public DoubleType getRandom(Random rnd) {
		return new DoubleType(rnd.nextDouble());
	}

	@Override
	public int length() {
		return 8;
	}

	@Override
	public void write(DataOutput out) throws IOException {
		out.writeDouble(this.value);
	}

	@Override
	public void read(DataInput in) throws IOException {
		this.value = in.readDouble();
	}

	@Override
	public int hashCode() {
		final long l = Double.doubleToLongBits(this.value);
		return (int) (l ^ l >>> 32);
	}

	@Override
	public boolean equals(Object obj) {
		if (obj instanceof DoubleType) {
			DoubleType other = (DoubleType) obj;
			return Double.doubleToLongBits(this.value) == Double.doubleToLongBits(other.value);
		} else {
			return false;
		}
	}
}