org.apache.cocoon.servletservice
Class CallStackHelper

java.lang.Object
  org.apache.cocoon.servletservice.CallStackHelper

public class CallStackHelper

extends Object

Helper class used for geting hold on the current servlet service

Since:

2.2

Version:

$Id: CallStackHelper.java 504299 2007-02-06 21:27:51Z danielf $

Field Summary

static String

SUPER_CALL Key for a value determing wether a call frame contains a super call or not

Constructor Summary

CallStackHelper()

Method Summary

static void	enterServlet(ServletContext context) This hook must be called each time a servlet service is entered.
static void	enterSuperServlet(ServletContext context) This hook must be called each time a super servlet service is entered.
static ServletContext	getBaseServletContext() Use this method for getting the context that should be used for resolving a polymorphic servlet protocol call
static ServletContext	getCurrentServletContext() Use this method for getting the context that should be used for resolving a servlet protocol call to a super servlet service
static void	leaveServlet() This hook must be called each time a servlet service is left.

Methods inherited from class java.lang.Object

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

Field Detail

SUPER_CALL

public static final String SUPER_CALL

Key for a value determing wether a call frame contains a super call or not

See Also:

Constant Field Values

Constructor Detail

CallStackHelper

public CallStackHelper()

Method Detail

enterServlet

public static void enterServlet(ServletContext context)
                         throws ServletException

This hook must be called each time a servlet service is entered.

This method should never raise an exception, except when the parameters are not set!

Throws:

ServletException - if block is null

enterSuperServlet

public static void enterSuperServlet(ServletContext context)
                              throws ServletException

This hook must be called each time a super servlet service is entered.

This method should never raise an exception, except when the parameters are not set!

Throws:

ServletException - if the context is null

leaveServlet

public static void leaveServlet()

This hook must be called each time a servlet service is left.

It's the counterpart to the enterServlet(ServletContext) method.

getBaseServletContext

public static ServletContext getBaseServletContext()

Use this method for getting the context that should be used for resolving a polymorphic servlet protocol call

Returns:

a servlet context

getCurrentServletContext

public static ServletContext getCurrentServletContext()

Use this method for getting the context that should be used for resolving a servlet protocol call to a super servlet service

Returns:

a servlet context