Interface IDependencyConstructor

Namespace

LfrlAnvil.Dependencies

Assembly

LfrlAnvil.Dependencies.dll

Represents a constructor of dependency instances.

public interface IDependencyConstructor

Properties

Info

ConstructorInfo to use for creating dependency instances. Null value means that an attempt will be made to find best suited constructor from Type.

ConstructorInfo? Info { get; }

Property Value

ConstructorInfo

Remarks

Best suited constructor is found by scanning all constructors of a type and scoring them based on the following rules:

• Public constructors start with 1 point, private constructors start with 0 points.
• If at least one parameter cannot be resolved or its resolver's type is not compatible, then the constructor is marked as not eligible.
• Each parameter with a custom factory resolution adds 3 points.
• Each parameter with a custom non-factory resolution that is not a captive dependency adds 3 points.
• Each automatically resolvable parameter that is not a captive dependency adds 2 points.
• Each unresolvable optional parameter (e.g. with a default value) with a custom non-factory resolution adds 2 points.
• Each unresolvable optional parameter (e.g. with a default value) adds 1 point.
• Each parameter with a custom non-factory resolution that is a captive dependency adds 1 point.

Then, the constructor with the highest score is chosen. If multiple constructors exist with the highest score, then the constructor with the largest number of parameters is chosen.

InvocationOptions

Specifies custom constructor invocation options.

IDependencyConstructorInvocationOptions InvocationOptions { get; }

Property Value

IDependencyConstructorInvocationOptions

Type

Type to use for resolving dependency instances. Null value means that the dependency's type itself will be used.

Type? Type { get; }

Property Value

Type