/// <summary>
/// Register and calibrated an Implementation to a Contract
/// </summary>
/// <param name="Contract"></param>
/// <param name="Implementation"></param>
/// <param name="Name"></param>
/// <param name="LifeTime"></param>
/// <returns></returns>
public static IoCRegistry Register(Type Contract, Type Implementation, string Name, IoCLifeTime LifeTime)
{
IoCRegistry result = new IoCRegistry
{
Name = Name,
Contract = Contract,
Implementation = Implementation,
LifeTime = LifeTime
};
implementations.Add(result);
return(result);
}
/// <summary>
/// Resolve the contract using its constructor
/// </summary>
/// <param name="contract"></param>
/// <returns></returns>
public static object Resolve(IoCRegistry ResolutionType)
{
// if single instance
if (ResolutionType.LifeTime == IoCLifeTime.Singleton)
{
object instance = instances.FirstOrDefault(x => x.GetType() == ResolutionType.Implementation);
if (instance != null)
{
return(instance);
}
}
Type implementation = ResolutionType.Implementation;
// Get the constructor with most parameters to make sure we get utilize the interfaces full potential.
ConstructorInfo constructor = implementation.GetConstructors().OrderByDescending(x => x.GetParameters()).First();
ParameterInfo[] constructorParameters = constructor.GetParameters();
if (constructorParameters.Length == 0)
{
return(Activator.CreateInstance(implementation));
}
List <object> parameters = new List <object>(constructorParameters.Length);
foreach (ParameterInfo parameterInfo in constructorParameters)
{
parameters.Add(Resolve(parameterInfo.ParameterType));
}
object inst = constructor.Invoke(parameters.ToArray());
// only add singleton instances, so we dont get an overflow of potentially millions of multi-instance over an application runtime.
if (ResolutionType.LifeTime == IoCLifeTime.Singleton)
{
instances.Add(inst);
}
return(inst);
}
public static IoCRegistry AsMultiInstance(this IoCRegistry self)
{
self.LifeTime = IoCLifeTime.MultiInstance;
return(self);
}
public static IoCRegistry AsSingleton(this IoCRegistry self)
{
self.LifeTime = IoCLifeTime.Singleton;
return(self);
}
public static object Resolve(Type contract)
{
IoCRegistry ResolutionType = implementations.FirstOrDefault(x => x.Contract == contract);
return(Resolve(ResolutionType));
}