org.benow.web.servlet
Class HandlerServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.benow.web.servlet.BasicServlet
              org.benow.web.servlet.HandlerServlet

All Implemented Interfaces:

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

Direct Known Subclasses:

HttpServiceProviderServlet, WebServiceServlet

public abstract class HandlerServlet
extends BasicServlet

Responds to request by getting pooled request handler, created by descendant.

Author:

andy

See Also:

#doGet(HandlerServletRequest, HttpServletResponse), createHandler(), RequestHandler, Serialized Form

Nested Class Summary

class

HandlerServlet.RequestHandlerPool

Field Summary

static org.benow.java.config.entry.ClassConfigurationEntry	CFG_ERROR_HANDLERS
protected static java.util.List<org.benow.error.ErrorHandler>	errorHandlers

Fields inherited from class org.benow.web.servlet.BasicServlet

externalURLHttp, externalURLHttps

Constructor Summary

HandlerServlet()

Method Summary

protected void	_doGet(java.lang.String url, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected boolean	beforeHandle(RequestHandler handler, java.lang.String url, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) do something before the request is handled.
protected abstract RequestHandler	createHandler()
protected void	doHandleRequest(RequestHandler handler, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.String url)
void	doPost(javax.servlet.http.HttpServletRequest arg0, javax.servlet.http.HttpServletResponse arg1)
void	onUnexpectedError(java.lang.Throwable t)

Methods inherited from class org.benow.web.servlet.BasicServlet

doGet, init, logHit

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

Field Detail

CFG_ERROR_HANDLERS

public static final org.benow.java.config.entry.ClassConfigurationEntry CFG_ERROR_HANDLERS

errorHandlers

protected static java.util.List<org.benow.error.ErrorHandler> errorHandlers

Constructor Detail

HandlerServlet

public HandlerServlet()

Method Detail

_doGet

protected void _doGet(java.lang.String url,
                      javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws java.lang.Throwable

Specified by:

_doGet in class BasicServlet

Throws:

java.lang.Throwable

beforeHandle

protected boolean beforeHandle(RequestHandler handler,
                               java.lang.String url,
                               javax.servlet.http.HttpServletRequest request,
                               javax.servlet.http.HttpServletResponse response)

do something before the request is handled.

Parameters:

handler -

url - requested url

request -

response -

Returns:

true if handler is to handle, false to abort delivery

doHandleRequest

protected void doHandleRequest(RequestHandler handler,
                               javax.servlet.http.HttpServletRequest request,
                               javax.servlet.http.HttpServletResponse response,
                               java.lang.String url)
                        throws java.lang.Throwable

Throws:

java.lang.Throwable

createHandler

protected abstract RequestHandler createHandler()

Returns:

an new handler to handle the request

doPost

public final void doPost(javax.servlet.http.HttpServletRequest arg0,
                         javax.servlet.http.HttpServletResponse arg1)
                  throws javax.servlet.ServletException,
                         java.io.IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

java.io.IOException

onUnexpectedError

public void onUnexpectedError(java.lang.Throwable t)