org.apache.hadoop.hive.serde2.columnar

Class LazyBinaryColumnarSerDe

java.lang.Object

org.apache.hadoop.hive.serde2.AbstractSerDe

org.apache.hadoop.hive.serde2.columnar.ColumnarSerDeBase

org.apache.hadoop.hive.serde2.columnar.LazyBinaryColumnarSerDe

All Implemented Interfaces:

Deserializer, SerDe, Serializer

public class LazyBinaryColumnarSerDe
extends ColumnarSerDeBase

LazyBinaryColumnarSerDe. This serde combines elements of columnar serde and lazybinary serde to produce a serde which serializes columns into a BytesRefArrayWritable in a compact binary format and which is deserialized in a lazy, i.e. on-demand fashion.

Field Summary

Fields inherited from class org.apache.hadoop.hive.serde2.columnar.ColumnarSerDeBase

cachedObjectInspector, lastOperationDeserialize, lastOperationSerialize, serializedSize, stats

Constructor Summary

Constructors

Constructor and Description
LazyBinaryColumnarSerDe()

Method Summary

Modifier and Type	Method and Description
void	initialize(Configuration conf, java.util.Properties tbl) Initialize the HiveSerializer.
Writable	serialize(java.lang.Object obj, ObjectInspector objInspector) Serialize an object by navigating inside the Object with the ObjectInspector.
java.lang.String	toString()

Methods inherited from class org.apache.hadoop.hive.serde2.columnar.ColumnarSerDeBase

deserialize, getObjectInspector, getSerDeStats, getSerializedClass, initialize

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyBinaryColumnarSerDe

public LazyBinaryColumnarSerDe()

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

initialize

public void initialize(Configuration conf,
                       java.util.Properties tbl)
                throws SerDeException

Description copied from class: AbstractSerDe

Initialize the HiveSerializer.

Specified by:

initialize in interface Deserializer

Specified by:

initialize in interface Serializer

Specified by:

initialize in class AbstractSerDe

Parameters:

conf - System properties

tbl - table properties

Throws:

SerDeException

serialize

public Writable serialize(java.lang.Object obj,
                          ObjectInspector objInspector)
                   throws SerDeException

Description copied from class: AbstractSerDe

Serialize an object by navigating inside the Object with the ObjectInspector. In most cases, the return value of this function will be constant since the function will reuse the Writable object. If the client wants to keep a copy of the Writable, the client needs to clone the returned value.

Specified by:

serialize in interface Serializer

Specified by:

serialize in class AbstractSerDe

Throws:

SerDeException