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 }