private static Executor CreateExecutor(ICommand command, ICommandHandler handler)
{
var commandType = command.GetType();
foreach (var interfaceType in commandType.GetInterfaces())
{
if (interfaceType.IsGenericType && typeof (ICommand).IsAssignableFrom(interfaceType))
{
var resultType = interfaceType.GetGenericArguments()[0];
var handlerType = typeof (ICommandHandler<,>).MakeGenericType(commandType, resultType);
if (handlerType.IsInstanceOfType(handler))
{
return new Executor(commandType, handlerType);
}
}
else if (typeof (ICommand).IsAssignableFrom(interfaceType))
{
var handlerType = typeof (ICommandHandler<>).MakeGenericType(commandType);
return new Executor(commandType, handlerType);
}
}
throw new InvalidOperationException(
"don't create CommandHandlers which derives directory from ICommandHandler");
}
