net.sf.ehcache.constructs.web.filter
Class PageFragmentCachingFilter
public abstract
class
PageFragmentCachingFilter
extends CachingFilter
A Template for a page caching filter that is designed for "included" pages, eg: jsp:includes. This filter
differs from the
CachingFilter in that it is not writing an entire response to the output stream.
This class should be sub-classed for each included page to be cached.
Filter Mappings need to be set up for a cache to have effect.
Version: $Id: PageFragmentCachingFilter.java 70 2006-05-07 11:50:02Z gregluck $
Author: Greg Luck
Method Summary |
protected PageInfo | buildPage(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
|
protected void | doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
Performs the filtering for a request. |
protected void | writeResponse(HttpServletResponse response, PageInfo pageInfo)
Assembles a response from a cached page include.
|
protected
PageInfo buildPage(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
{@inheritDoc }
Parameters: request {@inheritDoc } response {@inheritDoc } chain {@inheritDoc }
Returns: {@inheritDoc }
Throws: AlreadyGzippedException {@inheritDoc } Exception {@inheritDoc }
protected void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
Performs the filtering for a request.
protected void writeResponse(HttpServletResponse response,
PageInfo pageInfo)
Assembles a response from a cached page include.
These responses are never gzipped
The content length should not be set in the response, because it is a fragment of a page.
Don't write any headers at all.