Instance Method インスタンスメソッド

inverse(forRelationshipKey:)

For a given key that defines the name of the relationship from the receiver’s class to another class, returns the name of the relationship from the other class to the receiver’s class. レシーバのクラスから別のクラスへのリレーションシップ（関係）の名前を定義する指定されたキーに対して、別のクラスからレシーバのクラスへのリレーションシップの名前を返します。

Declaration 宣言 

func inverse(forRelationshipKey relationshipKey: String) -> String?

Parameters パラメータ

relationshipKey

The name of the relationship from the receiver’s class to another class. レシーバのクラスから別のクラスへのリレーションシップ（関係）の名前。

Return Value 戻り値

The name of the relationship that is the inverse of the receiver's relationship named relationshipKey.

Discussion 解説

NSObject’s implementation of inverseForRelationshipKey: simply invokes [[self classDescription] inverseForRelationshipKey:relationshipKey]. To make use of the default implementation, you must therefore implement and register a suitable class description—see NSClassDescription.

For example, suppose an Employee class has a relationship named department to a Department class, and that Department has a relationship called employees to Employee. The statement: この平叙文： 


employee inverseForRelationshipKey:@"department"];

returns the string employees.

See Also 参照

Working with Class Descriptions クラス記述を扱う

var attributeKeys: [String]
An array of NSString objects containing the names of immutable values that instances of the receiver's class contain.
var classDescription: NSClassDescription
An object containing information about the attributes and relationships of the receiver’s class. レシーバのクラスの属性とリレーションシップ（関係）についての情報を格納しているオブジェクト。
var toManyRelationshipKeys: [String]
An array containing the keys for the to-many relationship properties of the receiver. レシーバの対多関係プロパティに対するキーを格納している配列。
var toOneRelationshipKeys: [String]
The keys for the to-one relationship properties of the receiver, if any. レシーバの対一関係プロパティに対するキーを格納している配列。