Package org.rribbit.processing

Class HttpRequestProcessorServlet

java.lang.Object

jakarta.servlet.GenericServlet

jakarta.servlet.http.HttpServlet

org.rribbit.processing.HttpRequestProcessorServlet

All Implemented Interfaces:

jakarta.servlet.Servlet, jakarta.servlet.ServletConfig, Serializable

Direct Known Subclasses:

SpringHttpRequestProcessorServlet

public abstract class HttpRequestProcessorServlet
extends jakarta.servlet.http.HttpServlet

This servlet processes requests that are dispatched by the HttpRequestDispatcher. It is not actually an implementation of RequestProcessor, but uses a nested LocalRequestProcessor to do the actual processing. This is not a problem though, since an HttpRequestProcessorServlet receives its requests via HTTP and not via a Java interface. It accepts a ListenerObjectRetriever and a ListenerObjectExecutor, just like any other RequestProcessor.

RRiBbit over HTTP uses POST exclusively. Other HTTP methods are NOT used.

This is an abstract class, because it needs a ListenerObjectRetriever and a ListenerObjectExecutor to do its work, just like any other RequestProcessor. These however, cannot be passed in the constructor, since passing objects in a constructor cannot be done with Java Servlets. The programmer must therefore subclass this class and provide a ListenerObjectRetriever and a ListenerObjectExecutor via the abstract methods.

If you use Spring, then the SpringHttpRequestProcessorServlet provides an implementation of this class that retrieves the ListenerObjectRetriever and the ListenerObjectExecutor from the WebApplicationContext.

An HttpRequestProcessorServlet can be mounted on an SSL or a non-SSL server, it should make no difference to its behaviour.

Author:

G.J. Schouten

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected RequestProcessor	requestProcessor

Fields inherited from class jakarta.servlet.http.HttpServlet

LEGACY_DO_HEAD

Constructor Summary

Constructors

Constructor	Description
HttpRequestProcessorServlet()

Method Summary

Modifier and Type	Method	Description
protected abstract ListenerObjectExecutor	createListenerObjectExecutor()	Creates or fetches and returns a ListenerObjectExecutor that will be used to execute ListenerObjects.
protected abstract ListenerObjectRetriever	createListenerObjectRetriever()	Creates or fetches and returns a ListenerObjectRetriever that will be used to retrieve ListenerObjects.
protected void	doPost(jakarta.servlet.http.HttpServletRequest servletRequest, jakarta.servlet.http.HttpServletResponse servletResponse)
void	init()	When you override this, please make sure to call super.init().

Methods inherited from class jakarta.servlet.http.HttpServlet

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

Methods inherited from class jakarta.servlet.GenericServlet

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

Methods inherited from class java.lang.Object

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

Field Details

requestProcessor

protected RequestProcessor requestProcessor

Constructor Details

HttpRequestProcessorServlet

public HttpRequestProcessorServlet()

Method Details

doPost

protected void doPost(jakarta.servlet.http.HttpServletRequest servletRequest,
 jakarta.servlet.http.HttpServletResponse servletResponse)

Overrides:

doPost in class jakarta.servlet.http.HttpServlet

init

public void init()

When you override this, please make sure to call super.init().

Overrides:

init in class jakarta.servlet.GenericServlet

createListenerObjectRetriever

protected abstract ListenerObjectRetriever createListenerObjectRetriever()

Creates or fetches and returns a ListenerObjectRetriever that will be used to retrieve ListenerObjects.

Returns:

The ListenerObjectRetriever that will be used to retrieve ListenerObjects

createListenerObjectExecutor

protected abstract ListenerObjectExecutor createListenerObjectExecutor()

Creates or fetches and returns a ListenerObjectExecutor that will be used to execute ListenerObjects.

Returns:

The ListenerObjectExecutor that will be used to execute ListenerObjects