private void registerQueryHandlerMethod <TAttributed, TQuery, TResult>(Func <TAttributed> attributedObjectFactory, QueryHandlerAttributeMethod queryHandlerMethod)
where TAttributed : class
where TQuery : class, IQuery <TResult>
{
Type specificQueryType = typeof(TQuery);
QueryHandlerDelegate <TResult> handleQueryDelegate;
if (_queryHandlerDelegatesByQueryType.TryGetValue(specificQueryType, out handleQueryDelegate))
{
throw new InvalidOperationException($"Duplicate query handler registered for {specificQueryType.Name} query.");
}
QueryHandlerDelegate <TResult> newHandleQueryDelegate = queryHandlerMethod.CreateDelegate <TAttributed, TQuery, TResult>(attributedObjectFactory);
_queryHandlerDelegatesByQueryType.Add(specificQueryType, newHandleQueryDelegate);
}
private static IEnumerable <QueryHandlerAttributeMethod> getQueryHandlerMethods(Type queryHandlerType)
{
IEnumerable <MethodInfo> methods = queryHandlerType.GetRuntimeMethods().Where(m => m.CustomAttributes.Any(a => a.AttributeType == typeof(QueryHandlerAttribute)));
return(QueryHandlerAttributeMethod.FromMethodInfos(methods));
}