org.apache.storm.hdfs.trident.format

Class DefaultSequenceFormat

java.lang.Object

org.apache.storm.hdfs.trident.format.DefaultSequenceFormat

All Implemented Interfaces:

Serializable, SequenceFormat

public class DefaultSequenceFormat
extends Object
implements SequenceFormat

Basic SequenceFormat implementation that uses LongWritable for keys and Text for values.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DefaultSequenceFormat(String keyField, String valueField)

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.io.Writable	key(TridentTuple tuple) Given a tuple, return the key that should be written to the sequence file.
Class	keyClass() Key class used by implementation (e.g.
org.apache.hadoop.io.Writable	value(TridentTuple tuple) Given a tuple, return the value that should be written to the sequence file.
Class	valueClass() Value class used by implementation (e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultSequenceFormat

public DefaultSequenceFormat(String keyField,
                             String valueField)

Method Detail

keyClass

public Class keyClass()

Description copied from interface: SequenceFormat

Key class used by implementation (e.g. IntWritable.class, etc.)

Specified by:

keyClass in interface SequenceFormat

Returns:

valueClass

public Class valueClass()

Description copied from interface: SequenceFormat

Value class used by implementation (e.g. Text.class, etc.)

Specified by:

valueClass in interface SequenceFormat

Returns:

key

public org.apache.hadoop.io.Writable key(TridentTuple tuple)

Description copied from interface: SequenceFormat

Given a tuple, return the key that should be written to the sequence file.

Specified by:

key in interface SequenceFormat

Returns:

value

public org.apache.hadoop.io.Writable value(TridentTuple tuple)

Description copied from interface: SequenceFormat

Given a tuple, return the value that should be written to the sequence file.

Specified by:

value in interface SequenceFormat

Returns: