dragon.ir.index.sequence

Class AbstractSequenceIndexer

java.lang.Object

dragon.ir.index.sequence.AbstractSequenceIndexer

All Implemented Interfaces:

Indexer

Direct Known Subclasses:

BasicSequenceIndexer, OnlineSequenceIndexer

public abstract class AbstractSequenceIndexer
extends Object
implements Indexer

The abstract indexer for indexing sequencial data

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	initialized
protected AbstractSequenceIndexWriter	writer

Constructor Summary

Constructors

Constructor and Description
AbstractSequenceIndexer(ConceptExtractor ce)

Method Summary

Modifier and Type	Method and Description
void	close() This method releases occupied resources.
boolean	index(Article article) An article has many sections such as title, abstract and body.
boolean	indexed(String docKey)
void	initialize() It is required to call this method before calling index method to index articles.
void	setLog(String logFile)
void	setSectionIndexOption(boolean title, boolean abt, boolean body, boolean meta)
protected void	writeLog(String content)

Methods inherited from class java.lang.Object

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

Field Detail

writer

protected AbstractSequenceIndexWriter writer

initialized

protected boolean initialized

Constructor Detail

AbstractSequenceIndexer

public AbstractSequenceIndexer(ConceptExtractor ce)

Method Detail

setSectionIndexOption

public void setSectionIndexOption(boolean title,
                                  boolean abt,
                                  boolean body,
                                  boolean meta)

initialize

public void initialize()

Description copied from interface: Indexer

It is required to call this method before calling index method to index articles.

Specified by:

initialize in interface Indexer

close

public void close()

Description copied from interface: Indexer

This method releases occupied resources.

Specified by:

close in interface Indexer

index

public boolean index(Article article)

Description copied from interface: Indexer

An article has many sections such as title, abstract and body. The selection of sections for indexing is subject to the implemented indexers.

Specified by:

index in interface Indexer

Parameters:

article - the article for indexing

Returns:

true if indexed successfully

setLog

public void setLog(String logFile)

Specified by:

setLog in interface Indexer

indexed

public boolean indexed(String docKey)

Specified by:

indexed in interface Indexer

Parameters:

docKey - the unique document entry number

Returns:

true if this document has been indexed

writeLog

protected void writeLog(String content)