org.apache.hadoop.hive.ql.io

Interface FlatFileInputFormat.SerializationContext<S>

All Superinterfaces:

org.apache.hadoop.conf.Configurable

All Known Implementing Classes:

FlatFileInputFormat.SerializationContextFromConf

Enclosing class:

FlatFileInputFormat<T>

public static interface FlatFileInputFormat.SerializationContext<S>
extends org.apache.hadoop.conf.Configurable

An implementation of SerializationContext is responsible for looking up the Serialization implementation for the given RecordReader. Potentially based on the Configuration or some other mechanism The SerializationFactory does not give this functionality since: 1. Requires Serialization implementations to be specified in the Configuration a-priori (although same as setting a SerializationContext) 2. Does not lookup the actual subclass being deserialized. e.g., for Serializable does not have a way of configuring the actual Java class being serialized/deserialized.

Method Summary

Methods

Modifier and Type	Method and Description
Class<? extends S>	getRealClass() Produces the specific class to deserialize.
org.apache.hadoop.io.serializer.Serialization<S>	getSerialization() An Serialization object for objects of type S.

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Method Detail

getSerialization

org.apache.hadoop.io.serializer.Serialization<S> getSerialization()
                                                                  throws IOException

An Serialization object for objects of type S.

Returns:

a serialization object for this context

Throws:

IOException

getRealClass

Class<? extends S> getRealClass()
                                throws IOException

Produces the specific class to deserialize.

Throws:

IOException