org.ptolemy.ptango.lib.http

Class HttpRequestHandler.ActorServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.ptolemy.ptango.lib.http.HttpRequestHandler.ActorServlet

All Implemented Interfaces:

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

Enclosing class:

HttpRequestHandler

protected class HttpRequestHandler.ActorServlet
extends javax.servlet.http.HttpServlet

A servlet providing implementations of get and post. The way this servlet works is that when a get or post HTTP request is received, it records the properties of the request (the URI and parameters) and requests a firing of the enclosing actor at model time equal to the time elapsed since the start of execution of the model. The thread making the get or post request then suspends, giving the model a chance to execute. When the model has determined what the response to the request should be, it notifies this servlet thread, which then completes the handling of the request, sending back the response that has been provided by the enclosing actor.

See http://wiki.eclipse.org/Jetty/Tutorial/Embedding_Jetty.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ActorServlet()

Method Summary

Modifier and Type	Method and Description
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handle an HTTP get request by creating a web page as the HTTP response.
protected void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handle an HTTP post request by creating a web page as the HTTP response.

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, init, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

ActorServlet

protected ActorServlet()

Method Detail

doGet

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

Handle an HTTP get request by creating a web page as the HTTP response. NOTE: This method is synchronized, and the lock is _not_ released while waiting for the response. This strategy helps prevent a pending get request from overlapping with a pending put request. The second request will be postponed until the first has been completely handled.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Parameters:

request - The HTTP get request.

response - The HTTP response to write to.

Throws:

javax.servlet.ServletException - If there is a problem reading from the servlet request or other servlet problem

java.io.IOException - If there is a problem writing to the servlet response

doPost

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

Handle an HTTP post request by creating a web page as the HTTP response. NOTE: This method is synchronized, and the lock is _not_ released while waiting for the response. This strategy helps prevent a pending get request from overlapping with a pending put request. The second request will be postponed until the first has been completely handled.

Overrides:

doPost in class javax.servlet.http.HttpServlet

Parameters:

request - The HTTP get request.

response - The HTTP response to write to.

Throws:

javax.servlet.ServletException - If there is a problem reading from the servlet request or other servlet problem

java.io.IOException - If there is a problem writing to the servlet response