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.hadoop.io.serializer.avro;
020
021import org.apache.avro.Schema;
022import org.apache.avro.io.DatumReader;
023import org.apache.avro.io.DatumWriter;
024import org.apache.avro.specific.SpecificDatumReader;
025import org.apache.avro.specific.SpecificDatumWriter;
026import org.apache.avro.specific.SpecificRecord;
027import org.apache.hadoop.classification.InterfaceAudience;
028import 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
037public 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}