DefaultCodec.java
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上传日期:2018-01-08
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文件大小:3k
- /*
- * 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.OutputStream;
- import java.io.InputStream;
- import org.apache.hadoop.conf.Configurable;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.io.compress.zlib.*;
- public class DefaultCodec implements Configurable, CompressionCodec {
-
- Configuration conf;
- public void setConf(Configuration conf) {
- this.conf = conf;
- }
-
- public Configuration getConf() {
- return conf;
- }
-
- public CompressionOutputStream createOutputStream(OutputStream out)
- throws IOException {
- return new CompressorStream(out, createCompressor(),
- conf.getInt("io.file.buffer.size", 4*1024));
- }
- public CompressionOutputStream createOutputStream(OutputStream out,
- Compressor compressor)
- throws IOException {
- return new CompressorStream(out, compressor,
- conf.getInt("io.file.buffer.size", 4*1024));
- }
- public Class<? extends Compressor> getCompressorType() {
- return ZlibFactory.getZlibCompressorType(conf);
- }
- public Compressor createCompressor() {
- return ZlibFactory.getZlibCompressor(conf);
- }
- public CompressionInputStream createInputStream(InputStream in)
- throws IOException {
- return new DecompressorStream(in, createDecompressor(),
- conf.getInt("io.file.buffer.size", 4*1024));
- }
- public CompressionInputStream createInputStream(InputStream in,
- Decompressor decompressor)
- throws IOException {
- return new DecompressorStream(in, decompressor,
- conf.getInt("io.file.buffer.size", 4*1024));
- }
- public Class<? extends Decompressor> getDecompressorType() {
- return ZlibFactory.getZlibDecompressorType(conf);
- }
- public Decompressor createDecompressor() {
- return ZlibFactory.getZlibDecompressor(conf);
- }
-
- public String getDefaultExtension() {
- return ".deflate";
- }
- }