| /** |
| * 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.hbase.mapreduce; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.KeyValueUtil; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.classification.InterfaceStability; |
| import org.apache.hadoop.io.serializer.Deserializer; |
| import org.apache.hadoop.io.serializer.Serialization; |
| import org.apache.hadoop.io.serializer.Serializer; |
| |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public class KeyValueSerialization implements Serialization<KeyValue> { |
| @Override |
| public boolean accept(Class<?> c) { |
| return KeyValue.class.isAssignableFrom(c); |
| } |
| |
| @Override |
| public KeyValueDeserializer getDeserializer(Class<KeyValue> t) { |
| return new KeyValueDeserializer(); |
| } |
| |
| @Override |
| public KeyValueSerializer getSerializer(Class<KeyValue> c) { |
| return new KeyValueSerializer(); |
| } |
| |
| public static class KeyValueDeserializer implements Deserializer<KeyValue> { |
| private DataInputStream dis; |
| |
| @Override |
| public void close() throws IOException { |
| this.dis.close(); |
| } |
| |
| @Override |
| public KeyValue deserialize(KeyValue ignore) throws IOException { |
| // I can't overwrite the passed in KV, not from a proto kv, not just yet. TODO |
| return KeyValueUtil.create(this.dis); |
| } |
| |
| @Override |
| public void open(InputStream is) throws IOException { |
| this.dis = new DataInputStream(is); |
| } |
| } |
| |
| public static class KeyValueSerializer implements Serializer<KeyValue> { |
| private DataOutputStream dos; |
| |
| @Override |
| public void close() throws IOException { |
| this.dos.close(); |
| } |
| |
| @Override |
| public void open(OutputStream os) throws IOException { |
| this.dos = new DataOutputStream(os); |
| } |
| |
| @Override |
| public void serialize(KeyValue kv) throws IOException { |
| KeyValueUtil.write(kv, this.dos); |
| } |
| } |
| } |