oracle.cabo.servlet.event
Interface EventHandler

All Known Implementing Classes:

AbstractDataEventHandler, BaseEventHandler, GoEventHandler, NullEventHandler, TableEventHandler, MethodEventHandler, CompoundEventHandler, PickerEventHandler, ShowFacetEventHandler, ActionEventHandler

public interface EventHandler

Interface for handling an event.

Method Summary

EventResult

handleEvent(BajaContext context, Page page, PageEvent event) Handle an event.

Method Detail

handleEvent

public EventResult handleEvent(BajaContext context,
                               Page page,
                               PageEvent event)
                        throws java.lang.Throwable

Handle an event. Clients return an EventResult object that encapsulates the resulsts. If handleEvent() returns null, the PageBroker will simply redisplay the same page. Otherwise, the result will be passed to the PageFlowEngine to determine the Page to render.

Note: while the Page object is mutable, any calls that set properties, etc., will be ignored unless the Page is itself returned inside the EventResult.

Parameters:

context - the BajaContext

page - the page the client is requesting

event - the event on that page, or null if the client is just requesting a page display

Returns:

an object encapsulating results of this event

Throws:

java.lang.Throwable - if any processing of the event fails