com.ibm.websphere.servlet.filter
Class ServletChain

java.lang.Object
  |
  +--com.ibm.websphere.servlet.filter.ServletChain
All Implemented Interfaces:
javax.servlet.RequestDispatcher

public class ServletChain
extends java.lang.Object
implements javax.servlet.RequestDispatcher

Object that chains the responses of servlets together. A servlet chain acts as a response pipe that allows servlets to filter the output of the previous servlet in the chain. When a servlet writes header or output stream data to the response, this data is fed into a chained request object that will be passed to the next servlet in the chain. The next servlet can examine the contents of the chained request to see the response that was generated by the previous servlet. The data written by the last servlet in the chain will be sent back to the client.


Constructor Summary
ServletChain()
           
ServletChain(javax.servlet.RequestDispatcher[] dispatchers)
           
 
Method Summary
 void addRequestDispatcher(int index, javax.servlet.RequestDispatcher rd)
           
 void addRequestDispatcher(javax.servlet.RequestDispatcher rd)
           
static void chainRequestDispatchers(javax.servlet.RequestDispatcher[] dispatchers, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
          Chain the responses of a set of request dispatchers together.
 void clear()
           
 boolean containsRequestDispatcher(javax.servlet.RequestDispatcher rd)
           
 java.util.Enumeration enumeration()
           
 void forward(javax.servlet.ServletRequest req, javax.servlet.ServletResponse resp)
           
 javax.servlet.RequestDispatcher getRequestDispatcher(int index)
           
 void include(javax.servlet.ServletRequest req, javax.servlet.ServletResponse resp)
           
 int indexOf(javax.servlet.RequestDispatcher rd)
           
 boolean isEmpty()
           
 javax.servlet.RequestDispatcher removeRequestDispatcher(int index)
           
 boolean removeRequestDispatcher(javax.servlet.RequestDispatcher rd)
           
 javax.servlet.RequestDispatcher setRequestDispatcher(int index, javax.servlet.RequestDispatcher rd)
           
 int size()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ServletChain

public ServletChain()

ServletChain

public ServletChain(javax.servlet.RequestDispatcher[] dispatchers)
Method Detail

addRequestDispatcher

public void addRequestDispatcher(javax.servlet.RequestDispatcher rd)

addRequestDispatcher

public void addRequestDispatcher(int index,
                                 javax.servlet.RequestDispatcher rd)

clear

public void clear()

containsRequestDispatcher

public boolean containsRequestDispatcher(javax.servlet.RequestDispatcher rd)

enumeration

public java.util.Enumeration enumeration()

getRequestDispatcher

public javax.servlet.RequestDispatcher getRequestDispatcher(int index)

indexOf

public int indexOf(javax.servlet.RequestDispatcher rd)

isEmpty

public boolean isEmpty()

removeRequestDispatcher

public boolean removeRequestDispatcher(javax.servlet.RequestDispatcher rd)

removeRequestDispatcher

public javax.servlet.RequestDispatcher removeRequestDispatcher(int index)

setRequestDispatcher

public javax.servlet.RequestDispatcher setRequestDispatcher(int index,
                                                            javax.servlet.RequestDispatcher rd)

size

public int size()

forward

public void forward(javax.servlet.ServletRequest req,
                    javax.servlet.ServletResponse resp)
             throws javax.servlet.ServletException,
                    java.io.IOException
Specified by:
forward in interface javax.servlet.RequestDispatcher

include

public void include(javax.servlet.ServletRequest req,
                    javax.servlet.ServletResponse resp)
             throws javax.servlet.ServletException,
                    java.io.IOException
Specified by:
include in interface javax.servlet.RequestDispatcher

chainRequestDispatchers

public static void chainRequestDispatchers(javax.servlet.RequestDispatcher[] dispatchers,
                                           javax.servlet.http.HttpServletRequest request,
                                           javax.servlet.http.HttpServletResponse response)
                                    throws java.io.IOException,
                                           javax.servlet.ServletException
Chain the responses of a set of request dispatchers together.