uk.ac.gla.terrier.structures.indexing.singlepass.hadoop
Class MapEmittedPostingList

java.lang.Object
  uk.ac.gla.terrier.structures.indexing.singlepass.hadoop.WritableByteArray
      uk.ac.gla.terrier.structures.indexing.singlepass.hadoop.MapEmittedPostingList

All Implemented Interfaces:

org.apache.hadoop.io.Writable

public class MapEmittedPostingList
extends WritableByteArray

Sub-Class of WritableByteArray with additional information about which Map and Flush it came from

Since:

2.2

Version:

$Revision: 1.2 $

Author:

Richard McCreadie

Constructor Summary

MapEmittedPostingList()
Empty Constructor

MapEmittedPostingList(int c, int c2)
Super Constructor

MapEmittedPostingList(java.lang.String map, int run, int c, int c2)
Constructor

Method Summary

static MapEmittedPostingList	create_Hadoop_WritableRunPostingData(byte[] postingList, int DocumentFreq, int TermFreq) Super Factory Method
static MapEmittedPostingList	create_Hadoop_WritableRunPostingData(java.lang.String mapTaskID, int flushNo, byte[] postingList, int DocumentFreq, int TermFreq) Factory Method
java.lang.String	getMap()
int	getRun()
void	printArray()
void	readFields(java.io.DataInput arg0) Reads this object from the input stream 'in'
void	readFieldsMinusArray(java.io.DataInput arg0) Reads this object from the input stream 'in' apart from the array.
void	setMap(java.lang.String map)
void	setRun(int run)
java.lang.String	toString() Returns the Map & Flush Number
void	write(java.io.DataOutput arg0) Write this object to the output stream 'out'

Methods inherited from class uk.ac.gla.terrier.structures.indexing.singlepass.hadoop.WritableByteArray

create_Hadoop_WritableByteArray, create_Hadoop_WritableByteArray, create_Hadoop_WritableByteArray, getArray, getDocumentFreq, getTermFreq, setArray, setDocumentFreq, setTermFrequency

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MapEmittedPostingList

public MapEmittedPostingList(java.lang.String map,
                             int run,
                             int c,
                             int c2)

Constructor

Parameters:

map - - Map task id

run - - Flush Number

c - - Document Frequency

c2 - - Term Frequency

MapEmittedPostingList

public MapEmittedPostingList(int c,
                             int c2)

Super Constructor

Parameters:

c - - Document Frequency

c2 - - Term Frequency

MapEmittedPostingList

public MapEmittedPostingList()

Empty Constructor

Method Detail

create_Hadoop_WritableRunPostingData

public static MapEmittedPostingList create_Hadoop_WritableRunPostingData(java.lang.String mapTaskID,
                                                                         int flushNo,
                                                                         byte[] postingList,
                                                                         int DocumentFreq,
                                                                         int TermFreq)

Factory Method

Parameters:

mapTaskID - - Map Number

flushNo - - Flush Number

postingList - - Posting List

DocumentFreq - - Document Frequency

TermFreq - - Term Frequency

Returns:

a newly created Indexing_WritableRunPostingData

create_Hadoop_WritableRunPostingData

public static MapEmittedPostingList create_Hadoop_WritableRunPostingData(byte[] postingList,
                                                                         int DocumentFreq,
                                                                         int TermFreq)

Super Factory Method

Parameters:

postingList - - Posting List

DocumentFreq - - Document Frequency

TermFreq - - Term Frequency

Returns:

a newly created Indexing_WritableRunPostingData

toString

public java.lang.String toString()

Returns the Map & Flush Number

Overrides:

toString in class WritableByteArray

getMap

public java.lang.String getMap()

setMap

public void setMap(java.lang.String map)

getRun

public int getRun()

setRun

public void setRun(int run)

readFields

public void readFields(java.io.DataInput arg0)
                throws java.io.IOException

Reads this object from the input stream 'in'

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Overrides:

readFields in class WritableByteArray

Throws:

java.io.IOException

readFieldsMinusArray

public void readFieldsMinusArray(java.io.DataInput arg0)
                          throws java.io.IOException

Reads this object from the input stream 'in' apart from the array.

Parameters:

arg0 -

Throws:

java.io.IOException

write

public void write(java.io.DataOutput arg0)
           throws java.io.IOException

Write this object to the output stream 'out'

Specified by:

write in interface org.apache.hadoop.io.Writable

Overrides:

write in class WritableByteArray

Throws:

java.io.IOException

printArray

public void printArray()