protected FactoryBase(IServiceProvider serviceProvider, ServiceMap serviceMap, Type[] argTypes)
{
this.serviceProvider = serviceProvider;
this.argTypes = argTypes;
var serviceDescriptor = serviceMap.TryGetValue(typeof(TService), out var value)
? value.Single()
: throw new InvalidOperationException($"Unable to resolve service for type '{typeof(TService)}' while attempting to activate '{this.GetType().GetInterfaces().Single()}'.");
this.implementationType = serviceDescriptor.ImplementationType;
if (serviceDescriptor.Lifetime != ServiceLifetime.Transient)
{
throw new InvalidOperationException(
$"In order to resolve a parameterised factory for service type '{typeof(TService)}', the implementation type '{this.implementationType}' must be registered with Transient lifestyle.");
}
var matchingConstructors = this.implementationType.GetConstructors().Where(constructorInfo => IsMatch(constructorInfo, argTypes)).ToList();
if (matchingConstructors.Count != 1)
{
var argTypesText = string.Join(", ", argTypes.Select(argType => $"'{argType}'"));
throw new InvalidOperationException(
$"In order to resolve a parameterised factory for service type '{typeof(TService)}', the implementation type '{this.implementationType}' must contain {(matchingConstructors.Count == 0 ? "a" : "just one")} constructor whose last {(argTypes.Length > 1 ? argTypes.Length + " parameters are assignable from the factory argument types" : "parameter is assignable from the factory argument type")} {argTypesText}.");
}
this.constructor = matchingConstructors[0];
}
public Factory(IServiceProvider serviceProvider, ServiceMap serviceMap)
: base(serviceProvider, serviceMap, new[] { typeof(T1), typeof(T2), typeof(T3) })
{
}
