Package org.apache.ofbiz.base.util

Class CacheFilter

java.lang.Object

org.apache.ofbiz.base.util.CacheFilter

All Implemented Interfaces:

Filter

public class CacheFilter
extends Object
implements Filter

Constructor Summary

Constructors

Constructor	Description
CacheFilter()

Method Summary

Modifier and Type	Method	Description
void	destroy()	Called by the web container to indicate to a filter that it is being taken out of service.
void	doFilter(ServletRequest request, ServletResponse response, FilterChain chain)	The doFilter method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain.
FilterConfig	getFilterConfig()
void	init(FilterConfig filterConfiguration)	Called by the web container to indicate to a filter that it is being placed into service.
void	setFilterConfig(FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Constructor Details

CacheFilter

public CacheFilter()

Method Details

doFilter

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

The doFilter method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain. The FilterChain passed in to this method allows the Filter to pass on the request and response to the next entity in the chain.

A typical implementation of this method would follow the following pattern:-
1. Examine the request
2. Optionally wrap the request object with a custom implementation to filter content or headers for input filtering
3. Optionally wrap the response object with a custom implementation to filter content or headers for output filtering
4. a) Either invoke the next entity in the chain using the FilterChain object (chain.doFilter()),
4. b) or not pass on the request/response pair to the next entity in the filter chain to block the request processing
5. Directly set headers on the response after invocation of the next entity in the filter chain.

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Actually its goal in OFBiz is simply to prevent a post-auth security issue described in OFBIZ-12332
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Specified by:

doFilter in interface Filter

Parameters:

request - The request to process

response - The response associated with the request

chain - Provides access to the next filter in the chain for this filter to pass the request and response to for further processing

Throws:

IOException - if an I/O error occurs during this filter's processing of the request

ServletException - if the processing fails for any other reason

init

public void init(FilterConfig filterConfiguration)
          throws ServletException

Called by the web container to indicate to a filter that it is being placed into service. The servlet container calls the init method exactly once after instantiating the filter. The init method must complete successfully before the filter is asked to do any filtering work.

The web container cannot place the filter into service if the init method either:

• Throws a ServletException
• Does not return within a time period defined by the web container

The default implementation is a NO-OP.

Specified by:

init in interface Filter

Parameters:

filterConfiguration - The configuration information associated with the filter instance being initialised

Throws:

ServletException - if the initialisation fails

destroy

public void destroy()

Called by the web container to indicate to a filter that it is being taken out of service. This method is only called once all threads within the filter's doFilter method have exited or after a timeout period has passed. After the web container calls this method, it will not call the doFilter method again on this instance of the filter.

This method gives the filter an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the filter's current state in memory. The default implementation is a NO-OP.

Specified by:

destroy in interface Filter

getFilterConfig

public FilterConfig getFilterConfig()

Returns:

the filterConfig

setFilterConfig

public void setFilterConfig(FilterConfig filterConfig)

Parameters:

filterConfig - the filterConfig to set