org.gcube.common.ghn.service.handlers
Class RequestHandler

java.lang.Object
  org.gcube.common.ghn.service.handlers.AbstractHandler<RequestHandler>
      org.gcube.common.ghn.service.handlers.RequestHandler

All Implemented Interfaces:

ServiceHandler<RequestHandler>

Direct Known Subclasses:

RequestHandlerAdapter.UnavailableHandler, ScopeHandler

public abstract class RequestHandler
extends AbstractHandler<RequestHandler>

A Handler of RequestEvents and ResponseEvents.

The handler participates in a Pipeline of other handlers registered for notification of the same events. After processing the event, it may or may not propagate the event to the handlers further down in the Pipeline Pipeline.forward(ServiceEvent).

Author:

Fabio Simeoni

See Also:

RequestEvent, ResponseEvent, Pipeline

Constructor Summary

RequestHandler()

Method Summary

void	handleRequest(Pipeline<RequestHandler> pipeline, RequestEvent e) Invoked when the container receives a request for a servlet of a managed app.
void	handleResponse(Pipeline<RequestHandler> pipeline, ResponseEvent e) Invoked when a servlet of a managed app has produced a response to a request.
void	onEvent(Pipeline<RequestHandler> pipeline, ServiceEvent<RequestHandler> e) Processes a given event.
void	start(javax.servlet.ServletContext ctx) Initialises the handler.
void	stop() Terminates the handler.

Methods inherited from class org.gcube.common.ghn.service.handlers.AbstractHandler

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gcube.common.ghn.service.handlers.ServiceHandler

name

Constructor Detail

RequestHandler

public RequestHandler()

Method Detail

start

public void start(javax.servlet.ServletContext ctx)

Initialises the handler.

Parameters:

ctx - the servlet context of the managed app.

handleRequest

public void handleRequest(Pipeline<RequestHandler> pipeline,
                          RequestEvent e)

Invoked when the container receives a request for a servlet of a managed app.

Parameters:

pipeline - the pipeline in which this handler is registered

e - the event

handleResponse

public void handleResponse(Pipeline<RequestHandler> pipeline,
                           ResponseEvent e)

Invoked when a servlet of a managed app has produced a response to a request.

Parameters:

pipeline - the pipeline in which this handler is registered

e - the event

onEvent

public void onEvent(Pipeline<RequestHandler> pipeline,
                    ServiceEvent<RequestHandler> e)

Description copied from interface: ServiceHandler

Processes a given event.

Parameters:

pipeline - the pipeline in which the handler is registered.

e - the event

stop

public void stop()

Terminates the handler.