| /** |
| * 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 longs in a variable-length format. Such values take |
| * between one and five bytes. Smaller values take fewer bytes. |
| * |
| * @see org.apache.hadoop.io.WritableUtils#readVLong(DataInput) |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class VLongWritable implements WritableComparable<VLongWritable> { |
| private long value; |
| |
| public VLongWritable() {} |
| |
| public VLongWritable(long value) { set(value); } |
| |
| /** Set the value of this LongWritable. */ |
| public void set(long value) { this.value = value; } |
| |
| /** Return the value of this LongWritable. */ |
| public long get() { return value; } |
| |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| value = WritableUtils.readVLong(in); |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| WritableUtils.writeVLong(out, value); |
| } |
| |
| /** Returns true iff <code>o</code> is a VLongWritable with the same value. */ |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof VLongWritable)) |
| return false; |
| VLongWritable other = (VLongWritable)o; |
| return this.value == other.value; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (int)value; |
| } |
| |
| /** Compares two VLongWritables. */ |
| @Override |
| public int compareTo(VLongWritable o) { |
| long thisValue = this.value; |
| long thatValue = o.value; |
| return (thisValue < thatValue ? -1 : (thisValue == thatValue ? 0 : 1)); |
| } |
| |
| @Override |
| public String toString() { |
| return Long.toString(value); |
| } |
| |
| } |
| |