/// <summary>
/// Gets the given <paramref name="implementationType" />'s constructor that can be used by the
/// container to create that instance.
/// </summary>
/// <param name="serviceType">Type of the abstraction that is requested.</param>
/// <param name="implementationType">Type of the implementation to find a suitable constructor for.</param>
/// <returns>
/// The <see cref="T:System.Reflection.ConstructorInfo" />.
/// </returns>
/// <exception cref="T:SimpleInjector.ActivationException">Thrown when no suitable constructor could be found.</exception>
public ConstructorInfo GetConstructor(Type serviceType, Type implementationType)
{
// note: this I want in the future to be pushed out to a rule overrides folder
if (typeof(EntitiesContext).IsAssignableFrom(implementationType))
{
var defaultconstructor = (from constructor in implementationType.GetConstructors()
where constructor.GetParameters().Count() == 0
select constructor).Take(1);
if (defaultconstructor.Any())
{
return(defaultconstructor.First());
}
}
if (serviceType.IsAssignableFrom(implementationType))
{
var longestConstructor = (from constructor in implementationType.GetConstructors()
orderby constructor.GetParameters().Count() descending
select constructor).Take(1);
if (longestConstructor.Any())
{
return(longestConstructor.First());
}
}
// fall back to the container's default behavior.
return(_originalBehavior.GetConstructor(serviceType, implementationType));
}
public ConstructorInfo GetConstructor(Type serviceType, Type impType)
{
if (typeof(IController).IsAssignableFrom(impType))
{
var nonDefaultConstructor = impType.GetConstructors().Where(x => x.GetParameters().Length > 0).ToList();
if (nonDefaultConstructor.Count == 1)
{
return(nonDefaultConstructor.Single());
}
}
// fall back to the container's default behavior.
return(_defaultBehavior.GetConstructor(serviceType, impType));
}
/// <summary>
/// Gets the given <paramref name="implementationType" />'s constructor that can be used by the
/// container to create that instance.
/// </summary>
/// <param name="serviceType">Type of the abstraction that is requested.</param>
/// <param name="implementationType">Type of the implementation to find a suitable constructor for.</param>
/// <returns>
/// The <see cref="T:System.Reflection.ConstructorInfo" />.
/// </returns>
/// <exception cref="T:SimpleInjector.ActivationException">Thrown when no suitable constructor could be found.</exception>
public ConstructorInfo GetConstructor(Type serviceType, Type implementationType)
{
if (serviceType.IsAssignableFrom(implementationType))
{
var longestConstructor = (from constructor in implementationType.GetConstructors()
orderby constructor.GetParameters().Count() descending
select constructor).Take(1);
if (longestConstructor.Any())
{
return(longestConstructor.First());
}
}
// fall back to the container's default behavior.
return(_originalBehavior.GetConstructor(serviceType, implementationType));
}
public ConstructorInfo GetConstructor(Type serviceType,
Type implementationType)
{
if (serviceType.IsGenericType &&
serviceType.GetGenericTypeDefinition() == typeof(IOpenType <>))
{
// do alternative constructor selection here for open types.
// For instance:
return((
from ctor in implementationType.GetConstructors()
orderby ctor.GetParameters().Length descending
select ctor)
.First());
}
// fall back to default behavior
return(original.GetConstructor(serviceType, implementationType));
}
