dragon.onlinedb
Class BasicCollectionWriter

java.lang.Object
  |
  +--dragon.onlinedb.BasicCollectionWriter

All Implemented Interfaces:

CollectionWriter

public class BasicCollectionWriter

extends java.lang.Object

implements CollectionWriter

Writing collection to disk

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

protected BasicArticleIndex	articleIndex
protected java.lang.String	charSet
protected ArticleParser	parser
protected java.io.RandomAccessFile	rafCollection

Constructor Summary

BasicCollectionWriter(java.lang.String collectionFile, java.lang.String indexFile, boolean append)

Method Summary

boolean	add(Article article) Adds an article to the collection
void	close() Closes the collection writer and releases all resources.
ArticleParser	getArticleParser() Gets the article parser of the collection writer
void	setArticleParser(ArticleParser parser) Sets the article parser for the collection writer

Methods inherited from class java.lang.Object

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

Field Detail

rafCollection

protected java.io.RandomAccessFile rafCollection

articleIndex

protected BasicArticleIndex articleIndex

parser

protected ArticleParser parser

charSet

protected java.lang.String charSet

Constructor Detail

BasicCollectionWriter

public BasicCollectionWriter(java.lang.String collectionFile,
                             java.lang.String indexFile,
                             boolean append)

Method Detail

getArticleParser

public ArticleParser getArticleParser()

Description copied from interface: CollectionWriter

Gets the article parser of the collection writer

Specified by:

getArticleParser in interface CollectionWriter

Returns:

the article parser used for this collection writer

setArticleParser

public void setArticleParser(ArticleParser parser)

Description copied from interface: CollectionWriter

Sets the article parser for the collection writer

Specified by:

setArticleParser in interface CollectionWriter

Parameters:

parser - the article parser

add

public boolean add(Article article)

Description copied from interface: CollectionWriter

Adds an article to the collection

Specified by:

add in interface CollectionWriter

Parameters:

article - an article

Returns:

true if the article was added to the collection successfully.

close

public void close()

Description copied from interface: CollectionWriter

Closes the collection writer and releases all resources.

Specified by:

close in interface CollectionWriter