RequestContextListener

package foo;

import javax.servlet.ServletRequestEvent;

import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.web.context.request.AbstractRequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * Fixing an issue with Spring's
 * {@link org.springframework.web.context.request.RequestContextListener}, which was optimistically
 * casting the request attribute object to {@link ServletRequestAttributes}.
 * 
 * Instead this class casts the request attribute object to {@link AbstractRequestAttributes}.
 * 
 * @author Vikram Hullukunte
 * 
 */
public class RequestContextListener extends
		org.springframework.web.context.request.RequestContextListener {
	public void requestDestroyed( ServletRequestEvent requestEvent ) {
		AbstractRequestAttributes attributes = (AbstractRequestAttributes) requestEvent
				.getServletRequest().getAttribute(
						org.springframework.web.context.request.RequestContextListener.class
								.getName() + ".REQUEST_ATTRIBUTES");
		AbstractRequestAttributes threadAttributes = (AbstractRequestAttributes) RequestContextHolder
				.getRequestAttributes();
		if (threadAttributes != null) {
			// We're assumably within the original request thread...
			if (attributes == null) {
				attributes = threadAttributes;
			}
			LocaleContextHolder.resetLocaleContext();
			RequestContextHolder.resetRequestAttributes();
		}
		if (attributes != null) {
			attributes.requestCompleted();
		}
	}
}