| /** |
| * 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.hadoop.io; |
| |
| import java.io.*; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| /** |
| * A WritableComparable for booleans. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class BooleanWritable implements WritableComparable<BooleanWritable> { |
| private boolean value; |
| |
| /** |
| */ |
| public BooleanWritable() {}; |
| |
| /** |
| */ |
| public BooleanWritable(boolean value) { |
| set(value); |
| } |
| |
| /** |
| * Set the value of the BooleanWritable |
| */ |
| public void set(boolean value) { |
| this.value = value; |
| } |
| |
| /** |
| * Returns the value of the BooleanWritable |
| */ |
| public boolean get() { |
| return value; |
| } |
| |
| /** |
| */ |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| value = in.readBoolean(); |
| } |
| |
| /** |
| */ |
| @Override |
| public void write(DataOutput out) throws IOException { |
| out.writeBoolean(value); |
| } |
| |
| /** |
| */ |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof BooleanWritable)) { |
| return false; |
| } |
| BooleanWritable other = (BooleanWritable) o; |
| return this.value == other.value; |
| } |
| |
| @Override |
| public int hashCode() { |
| return value ? 0 : 1; |
| } |
| |
| |
| |
| /** |
| */ |
| @Override |
| public int compareTo(BooleanWritable o) { |
| boolean a = this.value; |
| boolean b = o.value; |
| return ((a == b) ? 0 : (a == false) ? -1 : 1); |
| } |
| |
| @Override |
| public String toString() { |
| return Boolean.toString(get()); |
| } |
| |
| /** |
| * A Comparator optimized for BooleanWritable. |
| */ |
| public static class Comparator extends WritableComparator { |
| public Comparator() { |
| super(BooleanWritable.class); |
| } |
| |
| @Override |
| public int compare(byte[] b1, int s1, int l1, |
| byte[] b2, int s2, int l2) { |
| return compareBytes(b1, s1, l1, b2, s2, l2); |
| } |
| } |
| |
| |
| static { |
| WritableComparator.define(BooleanWritable.class, new Comparator()); |
| } |
| } |