Exemplo n.º 1
0
        internal EventSourcedEntityHandler(AnySupport anySupport, IEventSourcedContext context, IBehaviorResolver behaviorReflectionCache, Func <IEventSourcedEntityCreationContext, object> entityCreationFactory = null)
        {
            AnySupport              = anySupport;
            Context                 = context;
            EntityCreationFactory   = entityCreationFactory;
            BehaviorReflectionCache = behaviorReflectionCache;

            var explicitBehaviors = Option.None <object[]>();
            var active            = true;

            void Become(object[] behaviors)
            {
                // ReSharper disable once AccessToModifiedClosure
                if (!active)
                {
                    throw new InvalidOperationException("Context is not active!");
                }
                explicitBehaviors = Option.Some(ValidateBehaviors(behaviors).ToArray());
            }

            var ctx    = new EventSourcedEntityCreationContext(context, Become);
            var entity = EntityCreationFactory(ctx);

            active           = false;
            CurrentBehaviors = explicitBehaviors.Match(behaviors => behaviors, () => new[] { entity });
        }
Exemplo n.º 2
0
 /// <summary>
 /// Uses an alternative value, if no existing value is present.
 /// </summary>
 /// <param name="alternative">The alternative value.</param>
 /// <returns>A new optional, containing either the existing or alternative value.</returns>
 public Option <T> Or(T alternative) => hasValue ? this : Option.Some(alternative);
Exemplo n.º 3
0
 public static ValueTask <Option <T, TExceptionResult> > MapExceptionAsync <T, TException, TExceptionResult>(this Option <T, TException> option, Func <TException, ValueTask <TExceptionResult> > mapping) =>
 option.MatchAsync(
     some: val => new ValueTask <Option <T, TExceptionResult> >(Option.Some <T, TExceptionResult>(val)),
     none: async err => Option.None <T, TExceptionResult>(await mapping(err)));