dragon.ir.index

Class BasicIndexWriter

java.lang.Object

dragon.ir.index.AbstractIndexWriter

dragon.ir.index.BasicIndexWriter

All Implemented Interfaces:

IndexWriter

public class BasicIndexWriter
extends AbstractIndexWriter

The class is used to initialize and write index 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
BasicIndexWriter(String directory, 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.
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

BasicIndexWriter

public BasicIndexWriter(String directory,
                        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

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.

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.