uk.ac.gla.terrier.structures.indexing
Class BlockLexiconBuilder

java.lang.Object
  uk.ac.gla.terrier.structures.indexing.LexiconBuilder
      uk.ac.gla.terrier.structures.indexing.BlockLexiconBuilder

Direct Known Subclasses:

UTFBlockLexiconBuilder

public class BlockLexiconBuilder
extends LexiconBuilder

Builds a block lexicon using block frequencies.

Version:

$Revision: 1.28 $

Author:

Douglas Johnson, Vassilis Plachouras & Craig Macdonald

Constructor Summary

BlockLexiconBuilder()
A default constructor of the class.

BlockLexiconBuilder(java.lang.String pathname, java.lang.String prefix)
Creates an instance of the class, given the path to save the final and temporary lexicons.

Method Summary

void	finishedDirectIndexBuild() The method that performs processing of the lexicon after the creation of the direct index has been completed.
static void	main(java.lang.String[] args)

Methods inherited from class uk.ac.gla.terrier.structures.indexing.LexiconBuilder

addDocumentTerms, addDocumentTerms, addTemporaryLexicon, createLexiconHash, createLexiconHash, createLexiconIndex, createLexiconIndex, finishedInvertedIndexBuild, getFinalNumberOfTerms, getLexInputStream, getLexOutputStream, merge

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockLexiconBuilder

public BlockLexiconBuilder()

A default constructor of the class. The block lexicon is built in the default path and file: ApplicationSetup.TERRIER_INDEX_PATH and ApplicationSetup.TERRIER_INDEX_PREFIX respectively.

BlockLexiconBuilder

public BlockLexiconBuilder(java.lang.String pathname,
                           java.lang.String prefix)

Creates an instance of the class, given the path to save the final and temporary lexicons.

Parameters:

pathname - String the path to save the temporary lexicons.

Method Detail

finishedDirectIndexBuild

public void finishedDirectIndexBuild()

The method that performs processing of the lexicon after the creation of the direct index has been completed. It flushes to disk the current temporary lexicon, and it starts the merging of the temporary lexicons and the creation of the lexicon index.

Overrides:

finishedDirectIndexBuild in class LexiconBuilder

main

public static void main(java.lang.String[] args)