dragon.onlinedb.searchengine

Class GoogleEngine

java.lang.Object

dragon.onlinedb.AbstractQuery

dragon.onlinedb.searchengine.AbstractSearchEngine

dragon.onlinedb.searchengine.GoogleEngine

All Implemented Interfaces:

ArticleQuery, CollectionReader

public class GoogleEngine
extends AbstractSearchEngine

Google Search Engine

Copyright: Copyright (c) 2003

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields inherited from class dragon.onlinedb.searchengine.AbstractSearchEngine

arrUrl, defaultEncoding, parser, site, term

Fields inherited from class dragon.onlinedb.AbstractQuery

articleNum, curArticle, curArticleNo, curPageNo, curPageWidth, pageNum, pageWidth

Constructor Summary

Constructors

Constructor and Description
GoogleEngine()

Method Summary

Modifier and Type	Method and Description
boolean	initQuery() One should call this method before retrieval articles.
boolean	moveToPage(int pageNo) Move to the given page and the pointer is set on the first article of the page.
void	setSearchTerm(String term) Set the searching terms.

Methods inherited from class dragon.onlinedb.searchengine.AbstractSearchEngine

getArticle, getArticle, getArticleByKey, getAutoRefresh, getDefaultEncoding, getRemoveTagOption, getSiteRestriction, getSummaryOnlyOption, setAutoRefresh, setDefaultEncoding, setRemoveTagOption, setSiteRestriction, setSummaryOnlyOption, sleepManySeconds, sleepOneSecond, supportArticleKeyRetrieval

Methods inherited from class dragon.onlinedb.AbstractQuery

close, getArticle, getArticleKey, getArticleParser, getCurPageNo, getCurPageWidth, getNextArticle, getPageNum, getPageWidth, getTotalArticleNum, loadCollection, moveToArticle, moveToNextArticle, moveToNextPage, restart, setArticleParser, size

Methods inherited from class java.lang.Object

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

Constructor Detail

GoogleEngine

public GoogleEngine()

Method Detail

setSearchTerm

public void setSearchTerm(String term)

Description copied from interface: ArticleQuery

Set the searching terms. How to interpret the terms specified in the string is subject to the implementations.

Specified by:

setSearchTerm in interface ArticleQuery

Overrides:

setSearchTerm in class AbstractSearchEngine

initQuery

public boolean initQuery()

Description copied from interface: ArticleQuery

One should call this method before retrieval articles. After initialization, number of pages and number of papers are available.

Returns:

a boolean value to indicate the operation is successful or failed.

moveToPage

public boolean moveToPage(int pageNo)

Description copied from interface: ArticleQuery

Move to the given page and the pointer is set on the first article of the page.

Parameters:

pageNo - the page #

Returns:

true if the given page exists.