org.apache.struts2.dispatcher
Class ActionContextCleanUp

java.lang.Object
  org.apache.struts2.dispatcher.ActionContextCleanUp

All Implemented Interfaces:

Filter

public class ActionContextCleanUp
extends Object
implements Filter

Special filter designed to work with the FilterDispatcher and allow for easier integration with SiteMesh. Normally, ordering your filters to have SiteMesh go first, and then FilterDispatcher go second is perfectly fine. However, sometimes you may wish to access Struts features, including the value stack, from within your SiteMesh decorators. Because FilterDispatcher cleans up the ActionContext, your decorator won't have access to the data you want.

By adding this filter, the FilterDispatcher will know to not clean up and instead defer cleanup to this filter. The ordering of the filters should then be:

• this filter
• SiteMesh filter
• FilterDispatcher

Version:

$Date: 2008-04-27 08:41:38 -0500 (Sun, 27 Apr 2008) $ $Id: ActionContextCleanUp.java 651946 2008-04-27 13:41:38Z apetrelli $

See Also:

FilterDispatcher, Dispatcher

Field Summary

private static String	COUNTER
private static Logger	LOG

Constructor Summary

ActionContextCleanUp()

Method Summary

protected static void	cleanUp(ServletRequest req) Clean up the request of threadlocals if this is the last execution
void	destroy()
void	doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
void	init(FilterConfig arg0)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logger LOG

COUNTER

private static final String COUNTER

See Also:

Constant Field Values

Constructor Detail

ActionContextCleanUp

public ActionContextCleanUp()

Method Detail

doFilter

public void doFilter(ServletRequest req,
                     ServletResponse res,
                     FilterChain chain)
              throws IOException,
                     ServletException

Specified by:

doFilter in interface Filter

Throws:

IOException

ServletException

See Also:

Filter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)

cleanUp

protected static void cleanUp(ServletRequest req)

Clean up the request of threadlocals if this is the last execution

Parameters:

req - The servlet request

destroy

public void destroy()

Specified by:

destroy in interface Filter

init

public void init(FilterConfig arg0)
          throws ServletException

Specified by:

init in interface Filter

Throws:

ServletException