Package org.appng.core.controller.filter

Class PageCacheFilter

java.lang.Object

org.appng.core.controller.filter.PageCacheFilter

All Implemented Interfaces:

javax.servlet.Filter

public class PageCacheFilter
extends Object
implements javax.servlet.Filter

A Filter which caches responses in form of an CachedResponse

Author:

Matthias Herlitzius, Matthias Müller

Field Summary

Fields

Modifier and Type	Field	Description
protected static String	CACHE_HIT

Constructor Summary

Constructors

Constructor	Description
PageCacheFilter()

Method Summary

Modifier and Type	Method	Description
protected boolean	acceptsGzipEncoding(javax.servlet.http.HttpServletRequest request)
protected String	calculateKey(javax.servlet.http.HttpServletRequest request)
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
protected CachedResponse	getCachedResponse(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.FilterChain chain, Site site, javax.cache.Cache<String,CachedResponse> cache, javax.cache.expiry.ExpiryPolicy expiryPolicy)
protected CachedResponse	handleCaching(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, Site site, javax.servlet.FilterChain chain, javax.cache.Cache<String,CachedResponse> cache, javax.cache.expiry.ExpiryPolicy expiryPolicy)
void	init(javax.servlet.FilterConfig filterConfig)
protected CachedResponse	performRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.FilterChain chain, Site site, javax.cache.expiry.ExpiryPolicy expiryPolicy)
protected void	writeResponse(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, CachedResponse pageInfo)

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_HIT

protected static final String CACHE_HIT

Constructor Detail

PageCacheFilter

public PageCacheFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)
          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

doFilter

public void doFilter(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

handleCaching

protected CachedResponse handleCaching(javax.servlet.http.HttpServletRequest request,
                                       javax.servlet.http.HttpServletResponse response,
                                       Site site,
                                       javax.servlet.FilterChain chain,
                                       javax.cache.Cache<String,CachedResponse> cache,
                                       javax.cache.expiry.ExpiryPolicy expiryPolicy)
                                throws javax.servlet.ServletException,
                                       IOException

Throws:

javax.servlet.ServletException

IOException

writeResponse

protected void writeResponse(javax.servlet.http.HttpServletRequest request,
                             javax.servlet.http.HttpServletResponse response,
                             CachedResponse pageInfo)
                      throws IOException

Throws:

IOException

getCachedResponse

protected CachedResponse getCachedResponse(javax.servlet.http.HttpServletRequest request,
                                           javax.servlet.http.HttpServletResponse response,
                                           javax.servlet.FilterChain chain,
                                           Site site,
                                           javax.cache.Cache<String,CachedResponse> cache,
                                           javax.cache.expiry.ExpiryPolicy expiryPolicy)
                                    throws javax.servlet.ServletException,
                                           IOException

Throws:

javax.servlet.ServletException

IOException

performRequest

protected CachedResponse performRequest(javax.servlet.http.HttpServletRequest request,
                                        javax.servlet.http.HttpServletResponse response,
                                        javax.servlet.FilterChain chain,
                                        Site site,
                                        javax.cache.expiry.ExpiryPolicy expiryPolicy)
                                 throws IOException,
                                        javax.servlet.ServletException

Throws:

IOException

javax.servlet.ServletException

calculateKey

protected String calculateKey(javax.servlet.http.HttpServletRequest request)

acceptsGzipEncoding

protected boolean acceptsGzipEncoding(javax.servlet.http.HttpServletRequest request)