Package com.opencqrs.esdb.client

Interface Precondition

All Known Implementing Classes:

Precondition.EventQlQueryIsTrue, Precondition.SubjectIsOnEventId, Precondition.SubjectIsPopulated, Precondition.SubjectIsPristine

public sealed interface Precondition
permits Precondition.SubjectIsOnEventId, Precondition.SubjectIsPristine, Precondition.SubjectIsPopulated, Precondition.EventQlQueryIsTrue

Sealed interface for preconditions used for event publication to ensure consistency within the underlying event store.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final record	Precondition.EventQlQueryIsTrue	A precondition stating the given EventQuery must evaluate to true.
static final record	Precondition.SubjectIsOnEventId	A precondition stating the given subject must have been updated by the given event id.
static final record	Precondition.SubjectIsPopulated	A precondition stating the given subject must already exist within the event store, that is at least one event must have been published for that subject.
static final record	Precondition.SubjectIsPristine	A precondition stating the given subject must not yet exist within the event store.