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
019 package org.apache.hadoop.io.serializer.avro;
020
021 import org.apache.avro.Schema;
022 import org.apache.avro.io.DatumReader;
023 import org.apache.avro.io.DatumWriter;
024 import org.apache.avro.specific.SpecificDatumReader;
025 import org.apache.avro.specific.SpecificDatumWriter;
026 import org.apache.avro.specific.SpecificRecord;
027 import org.apache.hadoop.classification.InterfaceAudience;
028 import org.apache.hadoop.classification.InterfaceStability;
029
030 /**
031 * Serialization for Avro Specific classes. This serialization is to be used
032 * for classes generated by Avro's 'specific' compiler.
033 */
034 @SuppressWarnings("unchecked")
035 @InterfaceAudience.Public
036 @InterfaceStability.Evolving
037 public class AvroSpecificSerialization
038 extends AvroSerialization<SpecificRecord>{
039
040 @InterfaceAudience.Private
041 @Override
042 public boolean accept(Class<?> c) {
043 return SpecificRecord.class.isAssignableFrom(c);
044 }
045
046 @InterfaceAudience.Private
047 @Override
048 public DatumReader getReader(Class<SpecificRecord> clazz) {
049 try {
050 return new SpecificDatumReader(clazz.newInstance().getSchema());
051 } catch (Exception e) {
052 throw new RuntimeException(e);
053 }
054 }
055
056 @InterfaceAudience.Private
057 @Override
058 public Schema getSchema(SpecificRecord t) {
059 return t.getSchema();
060 }
061
062 @InterfaceAudience.Private
063 @Override
064 public DatumWriter getWriter(Class<SpecificRecord> clazz) {
065 return new SpecificDatumWriter();
066 }
067
068 }