| /* |
| * 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 |
| * |
| * https://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.avro.hadoop.io; |
| |
| import org.apache.avro.Schema; |
| import org.apache.avro.io.DatumReader; |
| import org.apache.avro.mapred.AvroValue; |
| import org.apache.avro.mapred.AvroWrapper; |
| |
| /** |
| * Deserializes AvroValue objects within Hadoop. |
| * |
| * @param <D> The java type of the avro data to deserialize. |
| * |
| * @see AvroDeserializer |
| */ |
| public class AvroValueDeserializer<D> extends AvroDeserializer<AvroWrapper<D>, D> { |
| /** |
| * Constructor. |
| * |
| * @param writerSchema The Avro writer schema for the data to deserialize. |
| * @param readerSchema The Avro reader schema for the data to deserialize. |
| */ |
| public AvroValueDeserializer(Schema writerSchema, Schema readerSchema, ClassLoader classLoader) { |
| super(writerSchema, readerSchema, classLoader); |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param writerSchema The Avro writer schema for the data to deserialize. |
| * @param readerSchema The Avro reader schema for the data to deserialize. |
| * @param datumReader The Avro datum reader to use for deserialization. |
| */ |
| public AvroValueDeserializer(Schema writerSchema, Schema readerSchema, DatumReader<D> datumReader) { |
| super(writerSchema, readerSchema, datumReader); |
| } |
| |
| /** |
| * Creates a new empty <code>AvroValue</code> instance. |
| * |
| * @return a new empty AvroValue. |
| */ |
| @Override |
| protected AvroWrapper<D> createAvroWrapper() { |
| return new AvroValue<>(null); |
| } |
| } |