protected override ConstructorInfo GetGreediestSatisfiableConstructor(IPicoContainer container)
{
ConstructorInfo greediestConstructor = null;
IList conflicts = new ArrayList();
IList unsatisfiableDependencyTypes = new ArrayList();
if (sortedMatchingConstructors == null)
{
sortedMatchingConstructors = GetSortedMatchingConstructors();
}
int lastSatisfiableConstructorSize = -1;
for (int i = 0; i < sortedMatchingConstructors.Count; i++)
{
bool failedDependency = false;
ConstructorInfo constructor = (ConstructorInfo)sortedMatchingConstructors[i];
Type[] parameterTypes = TypeUtils.GetParameterTypes(constructor.GetParameters());
IParameter[] currentParameters = parameters != null
? parameters
: CreateDefaultParameters(parameterTypes);
// remember: all constructors with less arguments than the given parameters are filtered out already
for (int j = 0; j < currentParameters.Length; j++)
{
// check wether this constructor is statisfiable
if (currentParameters[j].IsResolvable(container, this, parameterTypes[j]))
{
continue;
}
foreach (Type type in parameterTypes)
{
unsatisfiableDependencyTypes.Add(type);
}
failedDependency = true;
break;
}
if (greediestConstructor != null && parameterTypes.Length != lastSatisfiableConstructorSize)
{
if (conflicts.Count == 0)
{
// we found our match [aka. greedy and satisfied]
return(greediestConstructor);
}
else
{
// fits although not greedy
conflicts.Add(constructor);
}
}
else if (!failedDependency && lastSatisfiableConstructorSize == parameterTypes.Length)
{
// satisfied and same size as previous one?
conflicts.Add(constructor);
conflicts.Add(greediestConstructor);
}
else if (!failedDependency)
{
greediestConstructor = constructor;
lastSatisfiableConstructorSize = parameterTypes.Length;
}
}
if (conflicts.Count != 0)
{
throw new TooManySatisfiableConstructorsException(ComponentImplementation, conflicts);
}
else if (greediestConstructor == null && unsatisfiableDependencyTypes.Count != 0)
{
throw new UnsatisfiableDependenciesException(this, unsatisfiableDependencyTypes);
}
else if (greediestConstructor == null)
{
// be nice to the user, show all constructors that were filtered out
StringBuilder ctorDetails = new StringBuilder();
ConstructorInfo[] constructors = GetAllConstructorInfo();
foreach (ConstructorInfo constructor in constructors)
{
ctorDetails.Append(TypeUtils.ConstructorAsString(constructor));
}
throw new PicoInitializationException("Either do the specified parameters not match any of the following constructors: "
+ ctorDetails
+ " or the constructors were not accessible for '" +
ComponentImplementation + "'");
}
return(greediestConstructor);
}