dragon.ir.index

Class OnlineIndexWriter

java.lang.Object

dragon.ir.index.AbstractIndexWriter

dragon.ir.index.OnlineIndexWriter

All Implemented Interfaces:

IndexWriter

public class OnlineIndexWriter
extends AbstractIndexWriter

The class is the same as BasicIndexWriter except that it does not store information to disk.

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields inherited from class dragon.ir.index.AbstractIndexWriter

collection, doc_cache_size, doc_in_cache, docIndexList, docrelationMatrix, doctermMatrix, initialized, relationIndexList, relationSupported, termIndexList

Constructor Summary

Constructors

Constructor and Description
OnlineIndexWriter(boolean relationSupported)

Method Summary

Modifier and Type	Method and Description
void	clean() For disk-based indexing, this method delete all files under the indexing folder.
void	close()
void	flush() For disk-based indexing, this method dump all information in memory to the files on disk.
IRDocIndexList	getDocIndexList()
IntSparseMatrix	getDocRelationMatrix()
IntSparseMatrix	getDocTermMatrix()
IRCollection	getIRCollection()
IRRelationIndexList	getRelationIndexList()
IRTermIndexList	getTermIndexList()
void	initialize() It is required to call this method before calling the write method

Methods inherited from class dragon.ir.index.AbstractIndexWriter

size, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

OnlineIndexWriter

public OnlineIndexWriter(boolean relationSupported)

Method Detail

initialize

public void initialize()

Description copied from interface: IndexWriter

It is required to call this method before calling the write method

close

public void close()

clean

public void clean()

Description copied from interface: IndexWriter

For disk-based indexing, this method delete all files under the indexing folder.

flush

public void flush()

Description copied from interface: IndexWriter

For disk-based indexing, this method dump all information in memory to the files on disk.

getTermIndexList

public IRTermIndexList getTermIndexList()

getRelationIndexList

public IRRelationIndexList getRelationIndexList()

getDocIndexList

public IRDocIndexList getDocIndexList()

getDocTermMatrix

public IntSparseMatrix getDocTermMatrix()

getDocRelationMatrix

public IntSparseMatrix getDocRelationMatrix()

getIRCollection

public IRCollection getIRCollection()