org.apache.hadoop.hive.ql.io.orc

Class OrcSerde

java.lang.Object

org.apache.hadoop.hive.ql.io.orc.OrcSerde

All Implemented Interfaces:

VectorizedSerde, Deserializer, SerDe, Serializer

Direct Known Subclasses:

VectorizedOrcSerde

public class OrcSerde
extends Object
implements SerDe, VectorizedSerde

A serde class for ORC. It transparently passes the object to/from the ORC file reader/writer.

Constructor Summary

Constructors

Constructor and Description
OrcSerde()

Method Summary

Methods

Modifier and Type	Method and Description
Object	deserialize(org.apache.hadoop.io.Writable writable)
void	deserializeVector(Object rowBlob, int rowsInBatch, VectorizedRowBatch reuseBatch)
ObjectInspector	getObjectInspector()
SerDeStats	getSerDeStats() Always returns null, since serialized size doesn't make sense in the context of ORC files.
Class<? extends org.apache.hadoop.io.Writable>	getSerializedClass()
void	initialize(org.apache.hadoop.conf.Configuration conf, Properties table)
org.apache.hadoop.io.Writable	serialize(Object realRow, ObjectInspector inspector)
org.apache.hadoop.io.Writable	serializeVector(VectorizedRowBatch vrg, ObjectInspector objInspector)

Methods inherited from class java.lang.Object

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

Constructor Detail

OrcSerde

public OrcSerde()

Method Detail

initialize

public void initialize(org.apache.hadoop.conf.Configuration conf,
              Properties table)

Specified by:

initialize in interface Deserializer

Specified by:

initialize in interface Serializer

getSerializedClass

public Class<? extends org.apache.hadoop.io.Writable> getSerializedClass()

Specified by:

getSerializedClass in interface Serializer

serialize

public org.apache.hadoop.io.Writable serialize(Object realRow,
                                      ObjectInspector inspector)

Specified by:

serialize in interface Serializer

deserialize

public Object deserialize(org.apache.hadoop.io.Writable writable)
                   throws SerDeException

Specified by:

deserialize in interface Deserializer

Throws:

SerDeException

getObjectInspector

public ObjectInspector getObjectInspector()
                                   throws SerDeException

Specified by:

getObjectInspector in interface Deserializer

Throws:

SerDeException

getSerDeStats

public SerDeStats getSerDeStats()

Always returns null, since serialized size doesn't make sense in the context of ORC files.

Specified by:

getSerDeStats in interface Deserializer

Specified by:

getSerDeStats in interface Serializer

Returns:

null

serializeVector

public org.apache.hadoop.io.Writable serializeVector(VectorizedRowBatch vrg,
                                            ObjectInspector objInspector)
                                              throws SerDeException

Specified by:

serializeVector in interface VectorizedSerde

Throws:

SerDeException

deserializeVector

public void deserializeVector(Object rowBlob,
                     int rowsInBatch,
                     VectorizedRowBatch reuseBatch)
                       throws SerDeException

Specified by:

deserializeVector in interface VectorizedSerde

Throws:

SerDeException