| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.flink.types; |
| |
| import org.apache.flink.annotation.Public; |
| import org.apache.flink.core.memory.DataInputView; |
| import org.apache.flink.core.memory.DataOutputView; |
| |
| import java.io.IOException; |
| |
| /** |
| * Boxed serializable and comparable double precision floating point type, representing the |
| * primitive type {@code double}. |
| */ |
| @Public |
| public class DoubleValue |
| implements Comparable<DoubleValue>, |
| ResettableValue<DoubleValue>, |
| CopyableValue<DoubleValue>, |
| Key<DoubleValue> { |
| private static final long serialVersionUID = 1L; |
| |
| private double value; |
| |
| /** Initializes the encapsulated double with 0.0. */ |
| public DoubleValue() { |
| this.value = 0; |
| } |
| |
| /** |
| * Initializes the encapsulated double with the provided value. |
| * |
| * @param value Initial value of the encapsulated double. |
| */ |
| public DoubleValue(double value) { |
| this.value = value; |
| } |
| |
| /** |
| * Returns the value of the encapsulated primitive double. |
| * |
| * @return the value of the encapsulated primitive double. |
| */ |
| public double getValue() { |
| return this.value; |
| } |
| |
| /** |
| * Sets the value of the encapsulated primitive double. |
| * |
| * @param value the new value of the encapsulated primitive double. |
| */ |
| public void setValue(double value) { |
| this.value = value; |
| } |
| |
| @Override |
| public void setValue(DoubleValue value) { |
| this.value = value.value; |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| @Override |
| public void read(DataInputView in) throws IOException { |
| this.value = in.readDouble(); |
| } |
| |
| @Override |
| public void write(DataOutputView out) throws IOException { |
| out.writeDouble(this.value); |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| @Override |
| public String toString() { |
| return String.valueOf(this.value); |
| } |
| |
| @Override |
| public int compareTo(DoubleValue o) { |
| final double other = o.value; |
| return this.value < other ? -1 : this.value > other ? 1 : 0; |
| } |
| |
| @Override |
| public int hashCode() { |
| long temp = Double.doubleToLongBits(this.value); |
| return 31 + (int) (temp ^ temp >>> 32); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| if (obj instanceof DoubleValue) { |
| final DoubleValue other = (DoubleValue) obj; |
| return Double.doubleToLongBits(this.value) == Double.doubleToLongBits(other.value); |
| } |
| return false; |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| @Override |
| public int getBinaryLength() { |
| return 8; |
| } |
| |
| @Override |
| public void copyTo(DoubleValue target) { |
| target.value = this.value; |
| } |
| |
| @Override |
| public DoubleValue copy() { |
| return new DoubleValue(this.value); |
| } |
| |
| @Override |
| public void copy(DataInputView source, DataOutputView target) throws IOException { |
| target.write(source, 8); |
| } |
| } |