KeyValueOf<K, V> class final

KeyValueOf Annotation

A reflectable annotation used to declare a key-value type relationship, such as for maps, configuration entries, or type-safe dictionaries.

Purpose

  • Provides explicit metadata about both key and value types.
  • Supports optional package scoping for each type.
  • Used by dependency resolution or serialization frameworks where generic type information is erased at runtime.

Behavior

  • Stores optional kPkg and vPkg (package names for key and value).
  • Exposes getKey and getValue to resolve Class<K> and Class<V>.

Example

@KeyValueOf("com.example.keys", "com.example.values")
final KeyValueOf<String, User> userMapping = KeyValueOf();

final keyClass = userMapping.getKey();
final valueClass = userMapping.getValue();
print(keyClass.getQualifiedName());   // com.example.keys.String
print(valueClass.getQualifiedName()); // com.example.values.User

Notes

  • Provides strong typing for frameworks handling generic maps.
  • Useful for reflection-based object factories and parsers.
Annotations
  • @Generic.new(KeyValueOf)
  • @Target.new({TargetKind.field})

Constructors

KeyValueOf([String? kPkg, String? vPkg])
KeyValueOf Annotation
const

Properties

annotationType → Type
Returns the annotation _type of this annotation.
no setter
hashCode → int
Returns a hash code consistent with equality definition.
no setterinherited
kPkg → String?
Optional package name for the key type.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
vPkg → String?
Optional package name for the value type.
final

Methods

equals(Object other) → bool
Checks whether the given object is logically equivalent to this annotation.
inherited
getKey() → Class<K>
Resolves the key type into a Class<K> representation.
getValue() → Class<V>
Resolves the value type into a Class<V> representation.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
Returns a string representation of this annotation.
inherited

Operators

operator ==(Object other) → bool
Checks if this annotation is equal to another object.
inherited