Method checkLockRequirements

packages/core/src/EntityManager.ts:2718–2730

(mode: LockMode | undefined, meta: EntityMetadata)

  }

  private checkLockRequirements(mode: LockMode | undefined, meta: EntityMetadata): void {
    if (!mode) {
      return;
    }

    if (mode === LockMode.OPTIMISTIC && !meta.versionProperty) {
      throw OptimisticLockError.notVersioned(meta);
    }

    if ([LockMode.PESSIMISTIC_READ, LockMode.PESSIMISTIC_WRITE].includes(mode) && !this.isInTransaction()) {
      throw ValidationError.transactionRequired();
    }
  }

  private validateIndexUsage<Entity extends object>(
    meta: EntityMetadata<Entity>,