Class CoolSearch

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--CoolSearch

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class CoolSearch

extends javax.servlet.http.HttpServlet

The servlet class. The manager.html will post to this servlet and the search.html will get from this servlet so that we can distinguish between two request.

See Also:

Serialized Form

Field Summary

private static WebIndex

w The Index that store keywords-pages.

Fields inherited from class javax.servlet.http.HttpServlet

Fields inherited from class javax.servlet.GenericServlet

Constructor Summary

CoolSearch()

Method Summary

private void	clearup() clear up the web index
private void	crawl(int numCrawl, java.lang.String url, WebIndex w, java.lang.String filename) Crawl the web!!
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) the get method that response to the search.html
protected void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) the post method that response to manager.html
private void	restore(java.lang.String filename) restore the webindex from file

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

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

Field Detail

w

private static WebIndex w

The Index that store keywords-pages. The static ensure that all user can access to the same webindex.

Constructor Detail

CoolSearch

public CoolSearch()

Method Detail

doPost

protected void doPost(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws javax.servlet.ServletException,
                      java.io.IOException

the post method that response to manager.html

Overrides:

doPost in class javax.servlet.http.HttpServlet

javax.servlet.ServletException

java.io.IOException

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     java.io.IOException

the get method that response to the search.html

Overrides:

doGet in class javax.servlet.http.HttpServlet

javax.servlet.ServletException

java.io.IOException

crawl

private void crawl(int numCrawl,
                   java.lang.String url,
                   WebIndex w,
                   java.lang.String filename)
            throws java.lang.Exception

Crawl the web!!

java.lang.Exception

restore

private void restore(java.lang.String filename)
              throws java.io.IOException

restore the webindex from file

java.io.IOException

clearup

private void clearup()

clear up the web index