| /** |
| * 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.hdfs.nfs.nfs3; |
| |
| import java.util.Comparator; |
| |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * OffsetRange is the range of read/write request. A single point (e.g.,[5,5]) |
| * is not a valid range. |
| */ |
| public class OffsetRange { |
| |
| public static final Comparator<OffsetRange> ReverseComparatorOnMin = |
| new Comparator<OffsetRange>() { |
| @Override |
| public int compare(OffsetRange o1, OffsetRange o2) { |
| if (o1.getMin() == o2.getMin()) { |
| return o1.getMax() < o2.getMax() ? |
| 1 : (o1.getMax() > o2.getMax() ? -1 : 0); |
| } else { |
| return o1.getMin() < o2.getMin() ? 1 : -1; |
| } |
| } |
| }; |
| |
| private final long min; |
| private final long max; |
| |
| OffsetRange(long min, long max) { |
| Preconditions.checkArgument(min >= 0 && max >= 0 && min < max); |
| this.min = min; |
| this.max = max; |
| } |
| |
| long getMin() { |
| return min; |
| } |
| |
| long getMax() { |
| return max; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (int) (min ^ max); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof OffsetRange) { |
| OffsetRange range = (OffsetRange) o; |
| return (min == range.getMin()) && (max == range.getMax()); |
| } |
| return false; |
| } |
| |
| public String toString() { |
| return "[" + getMin() + ", " + getMax() + ")"; |
| } |
| } |