public void Threshold_should_not_hold_event_when_it_is_of_a_higher_type_when_exact_is_false()
{
Boolean handlerActionWasCalled = false;
Action<ISourcedEvent> handlerAction = (e) => handlerActionWasCalled = true;
var handler = new TypeThresholdedActionBasedDomainEventHandler(handlerAction, typeof(FooEvent), false);
var handeled = handler.HandleEvent(new BarEvent());
handeled.Should().Be(true);
handlerActionWasCalled.Should().Be(true);
}
public void Threshold_should_hold_event_when_it_is_of_a_lower_type_when_exact_is_false()
{
Boolean handlerActionWasCalled = false;
Action <object> handlerAction = (e) => handlerActionWasCalled = true;
var handler = new TypeThresholdedActionBasedDomainEventHandler(handlerAction, typeof(BarEvent), "", false);
var handeled = handler.HandleEvent(new FooEvent());
handeled.Should().Be(false);
handlerActionWasCalled.Should().Be(false);
}
public void Threshold_should_hold_event_when_it_is_of_the_same_type_when_exact_is_true()
{
Boolean handlerActionWasCalled = false;
Action<object> handlerAction = (e) => handlerActionWasCalled = true;
var handler = new TypeThresholdedActionBasedDomainEventHandler(handlerAction, typeof(FooEvent), "", true);
var handeled = handler.HandleEvent(new FooEvent());
handeled.Should().Be(true);
handlerActionWasCalled.Should().Be(true);
}
public void Threshold_should_hold_event_when_it_is_of_the_same_type_when_exact_is_true()
{
Boolean handlerActionWasCalled = false;
Action <ISourcedEvent> handlerAction = (e) => handlerActionWasCalled = true;
var handler = new TypeThresholdedActionBasedDomainEventHandler(handlerAction, typeof(FooEvent), true);
var handeled = handler.HandleEvent(new FooEvent());
handeled.Should().Be(true);
handlerActionWasCalled.Should().Be(true);
}
public IEnumerable <ISourcedEventHandler> GetEventHandlers(object target)
{
Contract.Requires <ArgumentNullException>(target != null, "The target cannot be null.");
Contract.Ensures(Contract.Result <IEnumerable <ISourcedEventHandler> >() != null, "The result should never be null.");
var targetType = target.GetType();
var handlers = new List <ISourcedEventHandler>();
Logger.DebugFormat("Trying to get all event handlers based by convention for {0}.", targetType);
var methodsToMatch = targetType.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
var matchedMethods = from method in methodsToMatch
let parameters = method.GetParameters()
let noEventHandlerAttributes =
method.GetCustomAttributes(typeof(NoEventHandlerAttribute), true)
where
// Get only methods where the name matches.
Regex.IsMatch(method.Name, _regexPattern, RegexOptions.CultureInvariant) &&
// Get only methods that have 1 parameter.
parameters.Length == 1 &&
// Get only methods where the first parameter is an event.
typeof(IEvent).IsAssignableFrom(parameters[0].ParameterType) &&
// Get only methods that are not marked with the no event handler attribute.
noEventHandlerAttributes.Length == 0
select
new { MethodInfo = method, FirstParameter = method.GetParameters()[0] };
foreach (var method in matchedMethods)
{
var methodCopy = method.MethodInfo;
Type firstParameterType = methodCopy.GetParameters().First().ParameterType;
Action <IEvent> invokeAction = (e) => methodCopy.Invoke(target, new object[] { e });
Logger.DebugFormat("Created event handler for method {0} based on convention.", methodCopy.Name);
var handler = new TypeThresholdedActionBasedDomainEventHandler(invokeAction, firstParameterType, true);
handlers.Add(handler);
}
return(handlers);
}
public IEnumerable<IDomainEventHandler> GetEventHandlersFromAggregateRoot(AggregateRoot aggregateRoot)
{
Contract.Requires<ArgumentNullException>(aggregateRoot != null, "The aggregateRoot cannot be null.");
Contract.Ensures(Contract.Result<IEnumerable<IDomainEventHandler>>() != null, "The result should never be null.");
var targetType = aggregateRoot.GetType();
var handlers = new List<IDomainEventHandler>();
Logger.DebugFormat("Trying to get all event handlers based by convention for {0}.", targetType);
var methodsToMatch = targetType.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
var matchedMethods = from method in methodsToMatch
let parameters = method.GetParameters()
let noEventHandlerAttributes =
method.GetCustomAttributes(typeof(NoEventHandlerAttribute), true)
where
// Get only methods where the name matches.
Regex.IsMatch(method.Name, _regexPattern, RegexOptions.CultureInvariant) &&
// Get only methods that have 1 parameter.
parameters.Length == 1 &&
// Get only methods where the first parameter is an event.
typeof(DomainEvent).IsAssignableFrom(parameters[0].ParameterType) &&
// Get only methods that are not marked with the no event handler attribute.
noEventHandlerAttributes.Length == 0
select
new { MethodInfo = method, FirstParameter = method.GetParameters()[0] };
foreach (var method in matchedMethods)
{
var methodCopy = method.MethodInfo;
Type firstParameterType = methodCopy.GetParameters().First().ParameterType;
Action<DomainEvent> invokeAction = (e) => methodCopy.Invoke(aggregateRoot, new object[] { e });
Logger.DebugFormat("Created event handler for method {0} based on convention.", methodCopy.Name);
var handler = new TypeThresholdedActionBasedDomainEventHandler(invokeAction, firstParameterType, true);
handlers.Add(handler);
}
return handlers;
}
public IEnumerable<ISourcedEventHandler> GetEventHandlers(object target)
{
Contract.Requires<ArgumentNullException>(target != null, "The target cannot be null.");
Contract.Ensures(Contract.Result<IEnumerable<ISourcedEventHandler>>() != null, "The result should never be null.");
ICollection<ConventionMatchedMethod> matchedMethods = getConventionMatchedMethods(target);
var handlers = new List<ISourcedEventHandler>(matchedMethods.Count);
foreach (ConventionMatchedMethod method in matchedMethods)
{
MethodInfo methodCopy = method.MethodInfo;
Type parameterType = method.EventType.ParameterType;
Logger.DebugFormat("Created event handler for method {0} based on convention.", methodCopy.Name);
Action<object> invokeAction = e => methodCopy.Invoke(target, new[] {e});
var handler = new TypeThresholdedActionBasedDomainEventHandler(invokeAction, parameterType, methodCopy.Name, true);
handlers.Add(handler);
}
return handlers;
}
