org.apache.catalina.servlets

Class InvokerServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.apache.catalina.servlets.InvokerServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig, ContainerServlet

public final class InvokerServlet
extends javax.servlet.http.HttpServlet
implements ContainerServlet

The default servlet-invoking servlet for most web applications, used to serve requests to servlets that have not been registered in the web application deployment descriptor.

Version:

$Revision: 1.3 $ $Date: 2005/12/08 01:27:56 $

Author:

Craig R. McClanahan

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static ResourceBundle	rb

Constructor Summary

Constructors

Constructor and Description
InvokerServlet()

Method Summary

Modifier and Type	Method and Description
void	destroy() Finalize this servlet.
void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process a GET request for the specified resource.
void	doHead(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process a HEAD request for the specified resource.
void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process a POST request for the specified resource.
Wrapper	getWrapper() Return the Wrapper with which we are associated.
void	init() Initialize this servlet.
void	serveRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Serve the specified request, creating the corresponding response.
void	setWrapper(Wrapper wrapper) Set the Wrapper with which we are associated.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Field Detail

rb

public static final ResourceBundle rb

Constructor Detail

InvokerServlet

public InvokerServlet()

Method Detail

getWrapper

public Wrapper getWrapper()

Return the Wrapper with which we are associated.

Specified by:

getWrapper in interface ContainerServlet

setWrapper

public void setWrapper(Wrapper wrapper)

Set the Wrapper with which we are associated.

Specified by:

setWrapper in interface ContainerServlet

Parameters:

wrapper - The new wrapper

destroy

public void destroy()

Finalize this servlet.

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet

doGet

public void doGet(javax.servlet.http.HttpServletRequest request,
                  javax.servlet.http.HttpServletResponse response)
           throws IOException,
                  javax.servlet.ServletException

Process a GET request for the specified resource.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Parameters:

request - The servlet request we are processing

response - The servlet response we are creating

Throws:

IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet-specified error occurs

doHead

public void doHead(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response)
            throws IOException,
                   javax.servlet.ServletException

Process a HEAD request for the specified resource.

Overrides:

doHead in class javax.servlet.http.HttpServlet

Parameters:

request - The servlet request we are processing

response - The servlet response we are creating

Throws:

IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet-specified error occurs

doPost

public void doPost(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response)
            throws IOException,
                   javax.servlet.ServletException

Process a POST request for the specified resource.

Overrides:

doPost in class javax.servlet.http.HttpServlet

Parameters:

request - The servlet request we are processing

response - The servlet response we are creating

Throws:

IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet-specified error occurs

init

public void init()
          throws javax.servlet.ServletException

Initialize this servlet.

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

serveRequest

public void serveRequest(javax.servlet.http.HttpServletRequest request,
                         javax.servlet.http.HttpServletResponse response)
                  throws IOException,
                         javax.servlet.ServletException

Serve the specified request, creating the corresponding response. After the first time a particular servlet class is requested, it will be served directly (like any registered servlet) because it will have been registered and mapped in our associated Context.

Synchronize to avoid race conditions when multiple requests try to initialize the same servlet at the same time

Parameters:

request - The servlet request we are processing

response - The servlet response we are creating

Throws:

IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet-specified error occurs