com.hammurapi.eventbus
Interface EventHandlerBase<E,P extends Comparable<P>,C>

Show UML class diagram

Type Parameters:

E - Event type.

P - Priority type.

All Known Subinterfaces:

EventHandler<E,P,C,H,S>, EventHandlerWrapper<E,P,C,K,H,S>, JoinEventHandler<E,P,C,K,H,S>

All Known Implementing Classes:

AbstractEventHandler, EventHandlerFilter, EventHandlerWrapperFilter, LocalAbstractEventHandler, MappingEventHandler, PredicateChainingMatcher.JoinInputEventHandler, ReflectiveEventHandler

public interface EventHandlerBase<E,P extends Comparable<P>,C>

Event handler base.

Nested Class Summary

static class

EventHandlerBase.Mode Event handler mode.

Method Summary

boolean	consumes()
int	getCardinality()
C	getContext()
EventHandlerBase.Mode	getMode() Handler mode.
	getPredicate()
P	getPriority()
boolean	isOneOff() If this method returns true, then handler is invoked only once and then is removed from the bus.
void	reset() Resets handler internal state, if any.

Method Detail

consumes

boolean consumes()

Returns:

true if this handler consumes or updates events.

getPriority

P getPriority()

Returns:

priority Handler priority. Handlers with higher priority are guaranteed to be executed before handlers with lower priority and as such can consume events and prevent their dispatching to other handlers.

getCardinality

int getCardinality()

Returns:

Number of parameters expected by this handler.

reset

void reset()

Resets handler internal state, if any.

getContext

C getContext()

Returns:

Context for predicates.

isOneOff

boolean isOneOff()

If this method returns true, then handler is invoked only once and then is removed from the bus.

Returns:

getMode

EventHandlerBase.Mode getMode()

Handler mode.

Returns:

getPredicate

 getPredicate()

Returns:

Handler predicates.