org.elder.sourcerer.eventstoredb

Class EventStoreGrpcEventRepository<T>

java.lang.Object

org.elder.sourcerer.eventstoredb.EventStoreGrpcEventRepository<T>

Type Parameters:

T - The type of events managed by the event repository.

All Implemented Interfaces:

org.elder.sourcerer.EventRepository<T>

public class EventStoreGrpcEventRepository<T>
extends java.lang.Object
implements org.elder.sourcerer.EventRepository<T>

Sourcerer event repository implementation using EventStore (geteventstore.com) as the underlying system, and the newer gRPC based Java client https://github.com/EventStore/EventStoreDB-Client-Java. The EventStore implementation uses Jackson to serialize and deserialize events that are subclasses of the given event type base class. To instruct Jackson on how to correctly deserialize events to the correct concrete sub type, please use either the Jackson annotations, or JAXB annotations as per Jackson Polymorphic Deserialization

Constructor Summary

Constructors

Constructor and Description
EventStoreGrpcEventRepository(java.lang.String streamPrefix, com.eventstore.dbclient.EventStoreDBClient eventStore, java.lang.Class<T> eventClass, com.fasterxml.jackson.databind.ObjectMapper objectMapper, org.elder.sourcerer.EventNormalizer<T> normalizer)

Method Summary

Modifier and Type	Method and Description
int	append(java.lang.String streamId, java.util.List<org.elder.sourcerer.EventData<T>> events, org.elder.sourcerer.ExpectedVersion version)
int	getCurrentVersion()
int	getCurrentVersion(java.lang.String streamId)
java.lang.Class<T>	getEventType()
org.reactivestreams.Publisher<org.elder.sourcerer.EventSubscriptionUpdate<T>>	getPublisher(java.lang.Integer fromVersion)
org.reactivestreams.Publisher<org.elder.sourcerer.EventSubscriptionUpdate<T>>	getStreamPublisher(java.lang.String streamId, java.lang.Integer fromVersion)
org.elder.sourcerer.EventReadResult<T>	read(java.lang.String streamId, int version, int maxEvents)
org.elder.sourcerer.EventReadResult<T>	readAll(int version, int maxEvents)
org.elder.sourcerer.EventRecord<T>	readFirst(java.lang.String streamId)
org.elder.sourcerer.EventRecord<T>	readLast(java.lang.String streamId)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.elder.sourcerer.EventRepository

read, read, readAll, readAll

Constructor Detail

EventStoreGrpcEventRepository

public EventStoreGrpcEventRepository(java.lang.String streamPrefix,
                                     com.eventstore.dbclient.EventStoreDBClient eventStore,
                                     java.lang.Class<T> eventClass,
                                     com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                                     org.elder.sourcerer.EventNormalizer<T> normalizer)

Method Detail

getEventType

public java.lang.Class<T> getEventType()

Specified by:

getEventType in interface org.elder.sourcerer.EventRepository<T>

readAll

public org.elder.sourcerer.EventReadResult<T> readAll(int version,
                                                      int maxEvents)

Specified by:

readAll in interface org.elder.sourcerer.EventRepository<T>

read

public org.elder.sourcerer.EventReadResult<T> read(java.lang.String streamId,
                                                   int version,
                                                   int maxEvents)

Specified by:

read in interface org.elder.sourcerer.EventRepository<T>

readFirst

public org.elder.sourcerer.EventRecord<T> readFirst(java.lang.String streamId)

Specified by:

readFirst in interface org.elder.sourcerer.EventRepository<T>

readLast

public org.elder.sourcerer.EventRecord<T> readLast(java.lang.String streamId)

Specified by:

readLast in interface org.elder.sourcerer.EventRepository<T>

append

public int append(java.lang.String streamId,
                  java.util.List<org.elder.sourcerer.EventData<T>> events,
                  org.elder.sourcerer.ExpectedVersion version)

Specified by:

append in interface org.elder.sourcerer.EventRepository<T>

getCurrentVersion

public int getCurrentVersion()

Specified by:

getCurrentVersion in interface org.elder.sourcerer.EventRepository<T>

getCurrentVersion

public int getCurrentVersion(java.lang.String streamId)

Specified by:

getCurrentVersion in interface org.elder.sourcerer.EventRepository<T>

getStreamPublisher

public org.reactivestreams.Publisher<org.elder.sourcerer.EventSubscriptionUpdate<T>> getStreamPublisher(java.lang.String streamId,
                                                                                                        java.lang.Integer fromVersion)

Specified by:

getStreamPublisher in interface org.elder.sourcerer.EventRepository<T>

getPublisher

public org.reactivestreams.Publisher<org.elder.sourcerer.EventSubscriptionUpdate<T>> getPublisher(java.lang.Integer fromVersion)

Specified by:

getPublisher in interface org.elder.sourcerer.EventRepository<T>