wheel
Class WheelServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          wheel.WheelServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class WheelServlet
extends javax.servlet.http.HttpServlet

The servlet that handles all requests to Wheel. Has three functions:

1. Reads configuration from web.xml.
2. Dispatches requests to EngineImpl
3. Isolates the wheel.enhance.WheelClassLoader from other classloaders to enable non-delegating class loading.

Configuration settings:

basePackageForPages

Mandatory. Tells Wheel where to load pages. The value must be a java package name that is given up to the point where Wheel sould start loading pages. Example: Your page-classes are in com.foo.bar.pages -package which is what you'd set as the value for this parameter. When the application starts, all pages that are in that package can be viewed by simply appending the page class name at the end of the url. Also sub-packages for the given package are available by appending also the sub-packagename to the url and replacing '.' with '/'. So for example "admin/Main" would load the class com.foo.bar.pages.admin.Main.

applicationPackages

Mandatory. All packages that will contain pages or components used by your application should be here, inlcuding the package given in basePackageForPages. For example if you use components from an external jar, you need to add the package here. Package names are separated by comma.

cssPath

Optional. Sets the path relative to the application root where css-files are. The default is: "css"

jsPath

Optional. Sets the path relative to the application root where js-files are. The default is: "js"

startPage

Optional. Sets the page to load when no page is given. The default is: "Home"

developmentMode

Optional. Enables automatic class reloading. Will slow the application down considrebaly, use with caution.. The default is: "false"

watchForUpdate

Optional. When developmentMode is set on, this setting can be used to add additional locations to check for modified files. The comma-separated entries can be either context-related files (starting with '/') or relative file paths relative to the startup directory.

Author:

Henri Frilund

See Also:

Serialized Form

Constructor Summary

WheelServlet()

Method Summary

void	doGet(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
void	doPost(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
void	init(javax.servlet.ServletConfig servletConfig)

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

destroy, 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

Constructor Detail

WheelServlet

public WheelServlet()

Method Detail

doGet

public void doGet(javax.servlet.http.HttpServletRequest httpServletRequest,
                  javax.servlet.http.HttpServletResponse httpServletResponse)
           throws javax.servlet.ServletException,
                  java.io.IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException

doPost

public void doPost(javax.servlet.http.HttpServletRequest httpServletRequest,
                   javax.servlet.http.HttpServletResponse httpServletResponse)
            throws javax.servlet.ServletException,
                   java.io.IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException

init

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

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException