com.caucho.server.http
Class QRequestDispatcher

java.lang.Object
  |
  +--com.caucho.server.http.QRequestDispatcher

All Implemented Interfaces:

RequestDispatcher

public class QRequestDispatcher

extends java.lang.Object

implements RequestDispatcher

Method Summary

void	chain(ServletRequest request, ServletResponse response)
void	forward(CauchoRequest req, CauchoResponse res, java.lang.String method, boolean isLogin) Forwards the request to the servlet named by the request dispatcher.
void	forward(ServletRequest request, ServletResponse response) Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server.
void	forward(ServletRequest request, ServletResponse response, java.lang.String method, boolean isLogin)
void	include(ServletRequest request, ServletResponse response) Includes the content of a resource (servlet, JSP page, HTML file) in the response.
void	include(ServletRequest request, ServletResponse response, java.lang.String method) Include a request into the current page.

Methods inherited from class java.lang.Object

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

Method Detail

forward

public void forward(ServletRequest request,
                    ServletResponse response)
             throws ServletException,
                    java.io.IOException

Description copied from interface: RequestDispatcher

Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. This method allows one servlet to do preliminary processing of a request and another resource to generate the response.

For a RequestDispatcher obtained via getRequestDispatcher(), the ServletRequest object has its path elements and parameters adjusted to match the path of the target resource.

forward should be called before the response has been committed to the client (before response body output has been flushed). If the response already has been committed, this method throws an IllegalStateException. Uncommitted output in the response buffer is automatically cleared before the forward.

The request and response parameters must be either the same objects as were passed to the calling servlet's service method or be subclasses of the ServletRequestWrapper or ServletResponseWrapper classes that wrap them.

Specified by:

forward in interface RequestDispatcher

Following copied from interface: javax.servlet.RequestDispatcher

Parameters:

request - a ServletRequest object that represents the request the client makes of the servlet

response - a ServletResponse object that represents the response the servlet returns to the client

Throws:

ServletException - if the target resource throws this exception

java.io.IOException - if the target resource throws this exception

java.lang.IllegalStateException - if the response was already committed

forward

public void forward(ServletRequest request,
                    ServletResponse response,
                    java.lang.String method,
                    boolean isLogin)
             throws ServletException,
                    java.io.IOException

forward

public void forward(CauchoRequest req,
                    CauchoResponse res,
                    java.lang.String method,
                    boolean isLogin)
             throws ServletException,
                    java.io.IOException

Forwards the request to the servlet named by the request dispatcher.

Parameters:

req - the servlet request.

response - the servlet response.

method - special to tell if from error.

include

public void include(ServletRequest request,
                    ServletResponse response)
             throws ServletException,
                    java.io.IOException

Description copied from interface: RequestDispatcher

Includes the content of a resource (servlet, JSP page, HTML file) in the response. In essence, this method enables programmatic server-side includes.

The ServletResponse object has its path elements and parameters remain unchanged from the caller's. The included servlet cannot change the response status code or set headers; any attempt to make a change is ignored.

The request and response parameters must be either the same objects as were passed to the calling servlet's service method or be subclasses of the ServletRequestWrapper or ServletResponseWrapper classes that wrap them.

Specified by:

include in interface RequestDispatcher

Following copied from interface: javax.servlet.RequestDispatcher

Parameters:

request - a ServletRequest object that contains the client's request

response - a ServletResponse object that contains the servlet's response

Throws:

ServletException - if the included resource throws this exception

java.io.IOException - if the included resource throws this exception

chain

public void chain(ServletRequest request,
                  ServletResponse response)
           throws ServletException,
                  java.io.IOException

include

public void include(ServletRequest request,
                    ServletResponse response,
                    java.lang.String method)
             throws ServletException,
                    java.io.IOException

Include a request into the current page.