org.jbox.indexer
Class IndexWriterWithTFLOC

java.lang.Object
  org.jbox.indexer.AbstractIndexWriter
      org.jbox.indexer.IndexWriterWithTFLOC

All Implemented Interfaces:

IndexWriter

public class IndexWriterWithTFLOC
extends AbstractIndexWriter

A implementation of IndexWriter, creating word index with TF and location.

Version:

1.0

Author:

YiBin.H

See Also:

Word

Field Summary

Fields inherited from class org.jbox.indexer.AbstractIndexWriter

pageHome, wordHome

Constructor Summary

IndexWriterWithTFLOC()

Method Summary

void	createIndex(Word w, long urlId) Create index of a Word with TF and location.

Methods inherited from class org.jbox.indexer.AbstractIndexWriter

saveIndex, setPageHome, setWordHome

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexWriterWithTFLOC

public IndexWriterWithTFLOC()

Method Detail

createIndex

public void createIndex(Word w,
                        long urlId)

Create index of a Word with TF and location.
The "index" created might be like below: "22-0.166667-0,1" The first field "22" means the word did appear in Page with id 22, the Second field "0.166667" means the TF of the word in a page, and "0,1" represents the locations of the word. For example: "I have a cat. You have a dog. He is so funny." The word "have" appear in first sentence and second, so locations of the word in the text is "0,1". The text have 12 words, so the TF is 2/12 = 0.166667. Suppose the id of this text is "22", and then index of this word in the text is "22-0.166667-0,1".

Specified by:

createIndex in class AbstractIndexWriter

Parameters:

w - which need to create index.

urlId - the id of page which contains the word.