| /** |
| * 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.erasurecode.rawcoder; |
| |
| /** |
| * Raw erasure coder factory that can be used to create raw encoder and decoder. |
| * It helps in configuration since only one factory class is needed to be |
| * configured. |
| */ |
| public interface RawErasureCoderFactory { |
| |
| /** |
| * Create raw erasure encoder. |
| * @param numDataUnits number of data units in a coding group |
| * @param numParityUnits number of parity units in a coding group |
| * @return raw erasure encoder |
| */ |
| public RawErasureEncoder createEncoder(int numDataUnits, int numParityUnits); |
| |
| /** |
| * Create raw erasure decoder. |
| * @param numDataUnits number of data units in a coding group |
| * @param numParityUnits number of parity units in a coding group |
| * @return raw erasure decoder |
| */ |
| public RawErasureDecoder createDecoder(int numDataUnits, int numParityUnits); |
| } |