oracle.cabo.servlet.event
Interface PageFlowEngine

All Known Implementing Classes:

BasePageFlowEngine

public interface PageFlowEngine

Hook for controlling page flow in a UIX Controller (Baja) application. This interface is currently only exposed and used in AbstractPageBroker.

Clients can and should write their own implementations of this class to implement the page flow for their application.

See Also:

AbstractPageBroker.setPageFlowEngine(oracle.cabo.servlet.event.PageFlowEngine)

Method Summary

void	destroy() Destroys the page flow engine, freeing any state as needed.
Page	handleRequest(BajaContext context, Page sourcePage, PageEvent event, EventHandler handler) Handles a request for a page.
void	init(javax.servlet.Servlet servlet, javax.servlet.ServletConfig config) Initializes the page flow engine.

Method Detail

init

public void init(javax.servlet.Servlet servlet,
                 javax.servlet.ServletConfig config)

Initializes the page flow engine. Developers should not call this method; PageBroker will call it automatically.

destroy

public void destroy()

Destroys the page flow engine, freeing any state as needed. Developers should not call this method; PageBroker will call it automatically.

handleRequest

public Page handleRequest(BajaContext context,
                          Page sourcePage,
                          PageEvent event,
                          EventHandler handler)
                   throws PageEventException

Handles a request for a page.

Parameters:

context - the current BajaContext

sourcePage - the page of the request

event - the event being fired on that page

handler - the EventHandler that should process the event

Returns:

the page that should be rendered in response