org.apache.hadoop.hive.serde2

Interface Serializer

All Superinterfaces:

SerDe

All Known Implementing Classes:

AbstractEncodingAwareSerDe, AbstractSerDe, AvroSerDe, BinarySortableSerDe, BinarySortableSerDeWithEndPrefix, ByteStreamTypedSerDe, ColumnarSerDe, ColumnarSerDeBase, DelimitedJSONSerDe, JsonSerDe, LazyBinaryColumnarSerDe, LazyBinarySerDe, LazyBinarySerDe2, LazySimpleSerDe, MetadataTypedColumnsetSerDe, MultiDelimitSerDe, NullStructSerDe, OpenCSVSerde, RegexSerDe, TeradataBinarySerde, ThriftByteStreamTypedSerDe, ThriftDeserializer, ThriftJDBCBinarySerDe, TypedSerDe

public interface Serializer
extends SerDe

HiveSerializer is used to serialize data to a Hadoop Writable object. The serialize In addition to the interface below.

Method Summary

Modifier and Type	Method and Description
Class<? extends org.apache.hadoop.io.Writable>	getSerializedClass() Returns the Writable class that would be returned by the serialize method.
org.apache.hadoop.io.Writable	serialize(Object obj, ObjectInspector objInspector) Serialize an object by navigating inside the Object with the ObjectInspector.

Methods inherited from interface org.apache.hadoop.hive.serde2.SerDe

getSerDeStats, handleJobLevelConfiguration

Method Detail

getSerializedClass

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

Returns the Writable class that would be returned by the serialize method. This is used to initialize SequenceFile header.

serialize

org.apache.hadoop.io.Writable serialize(Object obj,
                                        ObjectInspector objInspector)
                                 throws SerDeException

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.

Throws:

SerDeException