org.apache.avro.hadoop.io
Class AvroDatumConverterFactory

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.avro.hadoop.io.AvroDatumConverterFactory

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

public class AvroDatumConverterFactory
extends org.apache.hadoop.conf.Configured

Constructs converters that turn objects (usually from the output of a MR job) into Avro data that can be serialized.

Currently, only the following types have implemented converters:

• AvroKey
• AvroValue
• BooleanWritable
• BytesWritable
• ByteWritable
• DoubleWritable
• FloatWritable
• IntWritable
• LongWritable
• NullWritable
• Text

Nested Class Summary

static class	AvroDatumConverterFactory.AvroWrapperConverter Converts AvroWrappers into their wrapped Avro data.
static class	AvroDatumConverterFactory.BooleanWritableConverter Converts BooleanWritables into Booleans.
static class	AvroDatumConverterFactory.BytesWritableConverter Converts BytesWritables into ByteBuffers.
static class	AvroDatumConverterFactory.ByteWritableConverter Converts ByteWritables into GenericFixed of size 1.
static class	AvroDatumConverterFactory.DoubleWritableConverter Converts DoubleWritables into Doubles.
static class	AvroDatumConverterFactory.FloatWritableConverter Converts FloatWritables into Floats.
static class	AvroDatumConverterFactory.IntWritableConverter Converts IntWritables into Ints.
static class	AvroDatumConverterFactory.LongWritableConverter Converts LongWritables into Longs.
static class	AvroDatumConverterFactory.NullWritableConverter Converts NullWritables into Nulls.
static class	AvroDatumConverterFactory.TextConverter Converts Text into CharSequences.

Constructor Summary

AvroDatumConverterFactory(org.apache.hadoop.conf.Configuration conf)
Creates a new AvroDatumConverterFactory instance.

Method Summary

<IN,OUT> AvroDatumConverter<IN,OUT>

create(Class<IN> inputClass) Creates a converter that turns objects of type inputClass into Avro data.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AvroDatumConverterFactory

public AvroDatumConverterFactory(org.apache.hadoop.conf.Configuration conf)

Creates a new AvroDatumConverterFactory instance.

Parameters:

conf - The job configuration.

Method Detail

create

public <IN,OUT> AvroDatumConverter<IN,OUT> create(Class<IN> inputClass)

Creates a converter that turns objects of type inputClass into Avro data.

Parameters:

inputClass - The type of input data to convert.

Returns:

A converter that turns objects of type inputClass into Avro data.