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ValveContext.javaAPI DocGlassfish v2 API4314Fri May 04 22:31:52 BST 2007org.apache.catalina

ValveContext

public interface ValveContext

A ValveContext is the mechanism by which a Valve can trigger the execution of the next Valve in a Pipeline, without having to know anything about the internal implementation mechanisms. An instance of a class implementing this interface is passed as a parameter to the Valve.invoke() method of each executed Valve.

IMPLEMENTATION NOTE: It is up to the implementation of ValveContext to ensure that simultaneous requests being processed (by separate threads) through the same Pipeline do not interfere with each other's flow of control.

author
Craig R. McClanahan
author
Gunnar Rjnning
author
Peter Donald
version
$Revision: 1.3 $ $Date: 2007/05/05 05:31:52 $

Fields Summary
Constructors Summary
Methods Summary
public java.lang.StringgetInfo()
Return descriptive information about this ValveContext implementation.

public voidinvokeNext(Request request, Response response)
Cause the invoke() method of the next Valve that is part of
the Pipeline currently being processed (if any) to be executed, passing
on the specified request and response objects plus this
ValveContext instance. Exceptions thrown by a subsequently
executed Valve (or a Filter or Servlet at the application level) will be
passed on to our caller.

If there are no more Valves to be executed, an appropriate
ServletException will be thrown by this ValveContext.
param
request The request currently being processed
param
response The response currently being created
exception
IOException if thrown by a subsequent Valve, Filter, or
Servlet
exception
ServletException if thrown by a subsequent Valve, Filter,
or Servlet
exception
ServletException if there are no further Valves configured
in the Pipeline currently being processed