com.github.leanframeworks.minibus.api

Interface EventFilter<C>

Type Parameters:

C - Type of content in the event.

All Known Implementing Classes:

AbstractClassFilter, ChannelFilter, ContentClassFilter, EventClassFilter, TopicFilter

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface EventFilter<C>

Interface to be implemented by event filters.

Filter implementations can be based on event class, content class, topic, channel, or anything you like.

Method Summary

Modifier and Type	Method and Description
boolean	accept(Event<C> event) States whether the event should be passed to the event handler that was registered with it.
default EventFilter<C>	and(EventFilter<C> other) Composes a new event filter by combining this event filter and the specified event filter with an AND operation.
default EventFilter<C>	not() Creates a new event filter negating this event filter.
default EventFilter<C>	or(EventFilter<C> other) Composes a new event filter by combining this event filter and the specified event filter with an OR operation.

Method Detail

accept

boolean accept(Event<C> event)

States whether the event should be passed to the event handler that was registered with it.

Parameters:

event - Event to be filtered in or out.

Returns:

True if the event can be passed to the interested event handler, false otherwise.

and

default EventFilter<C> and(EventFilter<C> other)

Composes a new event filter by combining this event filter and the specified event filter with an AND operation.

Parameters:

other - Other event filter to be combined.

Returns:

Newly composed event filter.

or

default EventFilter<C> or(EventFilter<C> other)

Composes a new event filter by combining this event filter and the specified event filter with an OR operation.

Parameters:

other - Other event filter to be combined.

Returns:

Newly composed event filter.

not

default EventFilter<C> not()

Creates a new event filter negating this event filter.

Returns:

Newly composed event filter.