Module dk.cloudcreate.essentials.components.eventsourced.aggregates

Package dk.cloudcreate.essentials.components.eventsourced.aggregates.snapshot

Interface AddNewAggregateSnapshotStrategy

All Known Implementing Classes:

AddNewAggregateSnapshotStrategy.AddNewSnapshotWhenBehindByNumberOfEvents

public interface AddNewAggregateSnapshotStrategy

Strategy for when an aggregate snapshot should be added

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	AddNewAggregateSnapshotStrategy.AddNewSnapshotWhenBehindByNumberOfEvents

Method Summary

Modifier and Type	Method	Description
<ID, AGGREGATE_IMPL_TYPE> boolean	shouldANewAggregateSnapshotBeAdded(AGGREGATE_IMPL_TYPE aggregate, dk.cloudcreate.essentials.components.eventsourced.eventstore.postgresql.eventstream.AggregateEventStream<ID> persistedEvents, Optional<dk.cloudcreate.essentials.components.eventsourced.eventstore.postgresql.types.EventOrder> mostRecentlyStoredSnapshotLastIncludedEventOrder)	Should a new aggregate snapshot be added based on
static AddNewAggregateSnapshotStrategy	updateOnEachAggregateUpdate()
static AddNewAggregateSnapshotStrategy	updateWhenBehindByNumberOfEvents(long numberOfEvents)

Method Details

updateWhenBehindByNumberOfEvents

static AddNewAggregateSnapshotStrategy updateWhenBehindByNumberOfEvents(long numberOfEvents)

updateOnEachAggregateUpdate

static AddNewAggregateSnapshotStrategy updateOnEachAggregateUpdate()

shouldANewAggregateSnapshotBeAdded

<ID,
AGGREGATE_IMPL_TYPE> boolean shouldANewAggregateSnapshotBeAdded(AGGREGATE_IMPL_TYPE aggregate,
 dk.cloudcreate.essentials.components.eventsourced.eventstore.postgresql.eventstream.AggregateEventStream<ID> persistedEvents,
 Optional<dk.cloudcreate.essentials.components.eventsourced.eventstore.postgresql.types.EventOrder> mostRecentlyStoredSnapshotLastIncludedEventOrder)

Should a new aggregate snapshot be added based on

Parameters:

aggregate - the aggregate that was just updated

persistedEvents - the events that was just persisted in relation to the aggregate

mostRecentlyStoredSnapshotLastIncludedEventOrder - The most recent found AggregateSnapshot.eventOrderOfLastIncludedEvent for the given Aggregate instance (may be Optional.empty())

Returns:

true if the aggregate snapshot should be added, otherwise false