org.apache.hadoop.mapred.nativetask.serde

Class TextSerializer

java.lang.Object

org.apache.hadoop.mapred.nativetask.serde.TextSerializer

All Implemented Interfaces:

INativeComparable, INativeSerializer<org.apache.hadoop.io.Text>

@InterfaceAudience.Private
public class TextSerializer
extends Object
implements INativeSerializer<org.apache.hadoop.io.Text>, INativeComparable

Constructor Summary

Constructors

Constructor and Description
TextSerializer()

Method Summary

Modifier and Type	Method and Description
void	deserialize(DataInput in, int length, org.apache.hadoop.io.Text w)
int	getLength(org.apache.hadoop.io.Text w) get length of data to be serialized.
void	serialize(org.apache.hadoop.io.Text w, DataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

TextSerializer

public TextSerializer()
               throws SecurityException,
                      NoSuchMethodException

Throws:

SecurityException

NoSuchMethodException

Method Detail

getLength

public int getLength(org.apache.hadoop.io.Text w)
              throws IOException

Description copied from interface: INativeSerializer

get length of data to be serialized. If the data length is already known (like IntWritable) and could immediately be returned from this method, it is good chance to implement customized NativeSerializer for efficiency

Specified by:

getLength in interface INativeSerializer<org.apache.hadoop.io.Text>

Throws:

IOException

serialize

public void serialize(org.apache.hadoop.io.Text w,
                      DataOutput out)
               throws IOException

Specified by:

serialize in interface INativeSerializer<org.apache.hadoop.io.Text>

Throws:

IOException

deserialize

public void deserialize(DataInput in,
                        int length,
                        org.apache.hadoop.io.Text w)
                 throws IOException

Specified by:

deserialize in interface INativeSerializer<org.apache.hadoop.io.Text>

Throws:

IOException