org.apache.cocoon.maven.deployer.servlet
Class ShieldingServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.apache.cocoon.maven.deployer.servlet.ShieldingServlet

All Implemented Interfaces:

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

public class ShieldingServlet
extends javax.servlet.http.HttpServlet

This servlet builds a classloading sandbox and runs another servlet inside that sandbox. The purpose is to shield the libraries and classes shipped with the web application from any other classes with the same name that may exist in the system, such as Xerces and Xalan versions included in JDK 1.4.

This servlet propagates all initialisation parameters to the sandboxed servlet, and requires the parameter servlet-class.

• servlet-class defines the sandboxed servlet class.

Version:

$Id: ShieldingServlet.html 1351235 2012-06-18 08:41:39Z ilgrosso $

See Also:

Serialized Form

Field Summary

protected ClassLoader	classloader
protected javax.servlet.Servlet	servlet

Constructor Summary

ShieldingServlet()

Method Summary

void	destroy() Destroy the actual servlet
void	init(javax.servlet.ServletConfig config)
void	service(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) Service the request by delegating the call to the real servlet

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, 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

servlet

protected javax.servlet.Servlet servlet

classloader

protected ClassLoader classloader

Constructor Detail

ShieldingServlet

public ShieldingServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

See Also:

GenericServlet.init(javax.servlet.ServletConfig)

service

public void service(javax.servlet.ServletRequest request,
                    javax.servlet.ServletResponse response)
             throws javax.servlet.ServletException,
                    IOException

Service the request by delegating the call to the real servlet

Specified by:

service in interface javax.servlet.Servlet

Overrides:

service in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

destroy

public void destroy()

Destroy the actual servlet

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet