org.cruxframework.crux.core.server.crawling
Class CrawlingFilter

java.lang.Object
  org.cruxframework.crux.core.server.crawling.CrawlingFilter

All Implemented Interfaces:

javax.servlet.Filter

public final class CrawlingFilter
extends Object
implements javax.servlet.Filter

Filter to serve search engines, sending static snapshots in the place of DHTML based pages. See this https://developers.google.com/webmasters/ajax-crawling/ The filter also ensure that the responses uses gzip compression and configure a cache for the snapshots.

Author:

Thiago da Rosa de Bustamante

Constructor Summary

CrawlingFilter()

Method Summary

void	destroy()
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain)
protected String	getRequestedPage(javax.servlet.ServletRequest req)
void	init(javax.servlet.FilterConfig config)
protected String	removeStringPrefix(String input, String prefix)

Methods inherited from class java.lang.Object

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

Constructor Detail

CrawlingFilter

public CrawlingFilter()

Method Detail

doFilter

public void doFilter(javax.servlet.ServletRequest req,
                     javax.servlet.ServletResponse res,
                     javax.servlet.FilterChain chain)
              throws IOException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

getRequestedPage

protected String getRequestedPage(javax.servlet.ServletRequest req)

Parameters:

req -

Returns:

removeStringPrefix

protected String removeStringPrefix(String input,
                                    String prefix)

Parameters:

input -

prefix -

Returns:

init

public void init(javax.servlet.FilterConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter