dragon.onlinedb.searchengine
Class AbstractSearchEngine

java.lang.Object
  |
  +--dragon.onlinedb.AbstractQuery
        |
        +--dragon.onlinedb.searchengine.AbstractSearchEngine

All Implemented Interfaces:

ArticleQuery, CollectionReader

Direct Known Subclasses:

GoogleEngine

public abstract class AbstractSearchEngine

extends AbstractQuery

Abstract Search Engine Query

Copyright: Copyright (c) 2003

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

protected WebLink[]	arrUrl
protected java.lang.String	defaultEncoding
protected HttpContent	parser
protected java.lang.String	site
protected java.lang.String	term

Fields inherited from class dragon.onlinedb.AbstractQuery

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

Constructor Summary

AbstractSearchEngine(int pageWidth)

Method Summary

protected Article	getArticle(int articleNo)
protected Article	getArticle(WebLink link, boolean useKey)
Article	getArticleByKey(java.lang.String id) Reads out the article according to its key
boolean	getAutoRefresh()
java.lang.String	getDefaultEncoding()
boolean	getRemoveTagOption()
java.lang.String	getSiteRestriction()
boolean	getSummaryOnlyOption()
void	setAutoRefresh(boolean enable)
void	setDefaultEncoding(java.lang.String encoding)
void	setRemoveTagOption(boolean option)
void	setSearchTerm(java.lang.String term) Set the searching terms.
void	setSiteRestriction(java.lang.String site)
void	setSummaryOnlyOption(boolean option)
static void	sleepManySeconds(long s)
static void	sleepOneSecond()
boolean	supportArticleKeyRetrieval() if the query supports this retrieval mode, one can get articles by calling getArticleByKey method.

Methods inherited from class dragon.onlinedb.AbstractQuery

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.onlinedb.ArticleQuery

initQuery, moveToPage

Field Detail

arrUrl

protected WebLink[] arrUrl

term

protected java.lang.String term

parser

protected HttpContent parser

site

protected java.lang.String site

defaultEncoding

protected java.lang.String defaultEncoding

Constructor Detail

AbstractSearchEngine

public AbstractSearchEngine(int pageWidth)

Method Detail

setSiteRestriction

public void setSiteRestriction(java.lang.String site)

getSiteRestriction

public java.lang.String getSiteRestriction()

setDefaultEncoding

public void setDefaultEncoding(java.lang.String encoding)

getDefaultEncoding

public java.lang.String getDefaultEncoding()

setAutoRefresh

public void setAutoRefresh(boolean enable)

getAutoRefresh

public boolean getAutoRefresh()

setSummaryOnlyOption

public void setSummaryOnlyOption(boolean option)

getSummaryOnlyOption

public boolean getSummaryOnlyOption()

setRemoveTagOption

public void setRemoveTagOption(boolean option)

getRemoveTagOption

public boolean getRemoveTagOption()

setSearchTerm

public void setSearchTerm(java.lang.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.

supportArticleKeyRetrieval

public boolean supportArticleKeyRetrieval()

Description copied from interface: CollectionReader

if the query supports this retrieval mode, one can get articles by calling getArticleByKey method.

Returns:

true if the query support the article retrieval by key.

getArticleByKey

public Article getArticleByKey(java.lang.String id)

Description copied from interface: CollectionReader

Reads out the article according to its key

Parameters:

id - the unique entry number of the article

Returns:

an article if exists

getArticle

protected Article getArticle(int articleNo)

Specified by:

getArticle in class AbstractQuery

getArticle

protected Article getArticle(WebLink link,
                             boolean useKey)

sleepOneSecond

public static void sleepOneSecond()

sleepManySeconds

public static void sleepManySeconds(long s)