001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.oozie.compression;
020
021import java.io.DataInputStream;
022import java.io.IOException;
023
024public interface CompressionCodec {
025
026    byte[] compressBytes(byte[] header, byte[] data) throws IOException;
027
028    byte[] compressString(byte[] header, String data) throws IOException;
029
030    String decompressToString(DataInputStream dais) throws IOException;
031
032    byte[] decompressToBytes(DataInputStream dais) throws IOException;
033}