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.
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