Interface IStoreConflictDetector
- Namespace
- Stratara.Abstractions.EventSourcing
- Assembly
- Stratara.Abstractions.dll
Recognises a database provider's refusal of a duplicate stream version, so that the event source can surface it as a ConcurrencyException on that provider.
public interface IStoreConflictDetector- Extension Methods
Remarks
A version collision is an insert the store's unique index refuses, and every provider reports
that refusal with an exception of its own. The framework registers a detector for each provider
it ships a store registration for — PostgreSQL through AddNpgsqlWriteDbContextFactory,
SQLite through the test-support store — and consults every registered detector when a save
fails. A host that brings another provider registers its own detector alongside; the framework's
keep working beside it.
A detector receives the exception the persistence layer threw and is expected to walk its inner exceptions itself, because which layer wraps the provider's exception is a provider detail.
Methods
IsUniqueViolation(Exception)
Returns whether exception, or any exception it wraps, is the provider's
refusal of a row that violates a unique constraint.
bool IsUniqueViolation(Exception exception)Parameters
exceptionExceptionThe exception a save threw.