org.axonframework.eventsourcing

Class EventStreamUtils

java.lang.Object

org.axonframework.eventsourcing.EventStreamUtils

public abstract class EventStreamUtils
extends Object

Utility class for dealing with event streams.

Since:

4.0

Author:

Steven van Beelen

Method Summary

Modifier and Type	Method and Description
static Stream<? extends DomainEventMessage<?>>	asStream(DomainEventStream domainEventStream) Convert the given domainEventStream to a regular java Stream of domain event messages.
static DomainEventStream	upcastAndDeserializeDomainEvents(Stream<? extends DomainEventData<?>> eventEntryStream, Serializer serializer, EventUpcaster upcasterChain) Upcasts and deserializes the given eventEntryStream using the given serializer and upcasterChain.

Methods inherited from class java.lang.Object

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

Method Detail

upcastAndDeserializeDomainEvents

public static DomainEventStream upcastAndDeserializeDomainEvents(Stream<? extends DomainEventData<?>> eventEntryStream,
                                                                 Serializer serializer,
                                                                 EventUpcaster upcasterChain)

Upcasts and deserializes the given eventEntryStream using the given serializer and upcasterChain.

The list of events returned contains lazy deserializing events for optimization purposes. Events represented with unknown classes are ignored if skipUnknownTypes is true

Parameters:

eventEntryStream - the stream of entries containing the data of the serialized event

serializer - the serializer to deserialize the event with

upcasterChain - the chain containing the upcasters to upcast the events with

Returns:

a stream of lazy deserializing events

asStream

public static Stream<? extends DomainEventMessage<?>> asStream(DomainEventStream domainEventStream)

Convert the given domainEventStream to a regular java Stream of domain event messages.

Parameters:

domainEventStream - the input DomainEventStream

Returns:

the output Stream after conversion