io.spine.server.entity

Class CompositeEventFilter

java.lang.Object

io.spine.server.entity.CompositeEventFilter

All Implemented Interfaces:

EventFilter

public final class CompositeEventFilter
extends java.lang.Object
implements EventFilter

An EventFilter which composes several other filters.

The filters are applied to the input event one by one in the order of addition. The next filter is applied to the result of the previous filter. If a filter returns an empty result, the whole composite filter returns an empty result at once.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompositeEventFilter.Builder A builder for the CompositeEventFilter instances.

Method Summary

Modifier and Type	Method and Description
java.util.Optional<? extends io.spine.base.EventMessage>	filter(io.spine.base.EventMessage event) Applies this filter to the given event.
static CompositeEventFilter.Builder	newBuilder() Creates a new instance of Builder for CompositeEventFilter instances.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.spine.server.entity.EventFilter

allowAll, filter

Method Detail

filter

public java.util.Optional<? extends io.spine.base.EventMessage> filter(io.spine.base.EventMessage event)

Description copied from interface: EventFilter

Applies this filter to the given event.

Specified by:

filter in interface EventFilter

Parameters:

event - the event to apply the filter to

Returns:

processed event or Optional.empty() if the event should not be posted

newBuilder

public static CompositeEventFilter.Builder newBuilder()

Creates a new instance of Builder for CompositeEventFilter instances.

Returns:

new instance of Builder