| /* |
| * 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.compress; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| /** |
| * An InputStream covering a range of compressed data. The start and end |
| * offsets requested by a client may be modified by the codec to fit block |
| * boundaries or other algorithm-dependent requirements. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public abstract class SplitCompressionInputStream |
| extends CompressionInputStream { |
| |
| private long start; |
| private long end; |
| |
| public SplitCompressionInputStream(InputStream in, long start, long end) |
| throws IOException { |
| super(in); |
| this.start = start; |
| this.end = end; |
| } |
| |
| protected void setStart(long start) { |
| this.start = start; |
| } |
| |
| protected void setEnd(long end) { |
| this.end = end; |
| } |
| |
| /** |
| * After calling createInputStream, the values of start or end |
| * might change. So this method can be used to get the new value of start. |
| * @return The changed value of start |
| */ |
| public long getAdjustedStart() { |
| return start; |
| } |
| |
| /** |
| * After calling createInputStream, the values of start or end |
| * might change. So this method can be used to get the new value of end. |
| * @return The changed value of end |
| */ |
| public long getAdjustedEnd() { |
| return end; |
| } |
| } |