ToManyOrdered

public final class ToManyOrdered<D> : ToManyRelationshipKeyPathStringConvertible, RelationshipProtocol where D : CoreStoreObject
extension RelationshipContainer.ToManyOrdered: RandomAccessCollection

The containing type for to-many ordered relationships. Any CoreStoreObject subclass can be a destination type. Inverse relationships should be declared from the destination type as well, using the inverse: argument for the relationship.

class Dog: CoreStoreObject {
    let master = Relationship.ToOne<Person>("master")
}
class Person: CoreStoreObject {
    let pets = Relationship.ToManyOrdered<Dog>("pets", inverse: { $0.master })
}

Important

Relationship.ToManyOrdered properties are required to be stored properties. Computed properties will be ignored, including lazy and weak properties.
  • Initializes the metadata for the relationship. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object. Make sure to declare this relationship’s inverse relationship on its destination object. Due to Swift’s compiler limitation, only one of the relationship and its inverse can declare an inverse: argument.

    class Dog: CoreStoreObject {
        let master = Relationship.ToOne<Person>("master")
    }
    class Person: CoreStoreObject {
        let pets = Relationship.ToManyOrdered<Dog>("pets", inverse: { $0.master })
    }
    

    Declaration

    Swift

    public convenience init(
        _ keyPath: KeyPathString,
        minCount: Int = 0,
        maxCount: Int = 0,
        deleteRule: DeleteRule = .nullify,
        versionHashModifier: @autoclosure @escaping () -> String? = nil,
        renamingIdentifier: @autoclosure @escaping () -> String? = nil,
        affectedByKeyPaths: @autoclosure @escaping () -> Set<String> = [])

    Parameters

    keyPath

    the permanent name for this relationship.

    minCount

    the minimum number of objects in this relationship UNLESS THE RELATIONSHIP IS EMPTY. This means there might be zero objects in the relationship, which might be less than minCount. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    maxCount

    the maximum number of objects in this relationship. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    deleteRule

    defines what happens to relationship when an object is deleted. Valid values are .nullify, .cascade, and .delete. Defaults to .nullify.

    versionHashModifier

    used to mark or denote a relationship as being a different “version” than another even if all of the values which affect persistence are equal. (Such a difference is important in cases where the properties are unchanged but the format or content of its data are changed.)

    renamingIdentifier

    used to resolve naming conflicts between models. When creating an entity mapping between entities in two managed object models, a source entity property and a destination entity property that share the same identifier indicate that a property mapping should be configured to migrate from the source to the destination. If unset, the identifier will be the property’s name.

    affectedByKeyPaths

    a set of key paths for properties whose values affect the value of the receiver. This is similar to NSManagedObject.keyPathsForValuesAffectingValue(forKey:).

  • Initializes the metadata for the relationship. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object. Make sure to declare this relationship’s inverse relationship on its destination object. Due to Swift’s compiler limitation, only one of the relationship and its inverse can declare an inverse: argument.

    class Dog: CoreStoreObject {
        let master = Relationship.ToOne<Person>("master")
    }
    class Person: CoreStoreObject {
        let pets = Relationship.ToManyOrdered<Dog>("pets", inverse: { $0.master })
    }
    

    Declaration

    Swift

    public convenience init(
        _ keyPath: KeyPathString,
        minCount: Int = 0,
        maxCount: Int = 0,
        inverse: @escaping (D) -> RelationshipContainer<D>.ToOne<O>,
        deleteRule: DeleteRule = .nullify,
        versionHashModifier: @autoclosure @escaping () -> String? = nil,
        renamingIdentifier: @autoclosure @escaping () -> String? = nil,
        affectedByKeyPaths: @autoclosure @escaping () -> Set<String> = [])

    Parameters

    keyPath

    the permanent name for this relationship.

    minCount

    the minimum number of objects in this relationship UNLESS THE RELATIONSHIP IS EMPTY. This means there might be zero objects in the relationship, which might be less than minCount. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    maxCount

    the maximum number of objects in this relationship. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    inverse

    the inverse relationship that is declared for the destination object. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object.

    deleteRule

    defines what happens to relationship when an object is deleted. Valid values are .nullify, .cascade, and .delete. Defaults to .nullify.

    versionHashModifier

    used to mark or denote a relationship as being a different “version” than another even if all of the values which affect persistence are equal. (Such a difference is important in cases where the properties are unchanged but the format or content of its data are changed.)

    renamingIdentifier

    used to resolve naming conflicts between models. When creating an entity mapping between entities in two managed object models, a source entity property and a destination entity property that share the same identifier indicate that a property mapping should be configured to migrate from the source to the destination. If unset, the identifier will be the property’s name.

    affectedByKeyPaths

    a set of key paths for properties whose values affect the value of the receiver. This is similar to NSManagedObject.keyPathsForValuesAffectingValue(forKey:).

  • Initializes the metadata for the relationship. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object. Make sure to declare this relationship’s inverse relationship on its destination object. Due to Swift’s compiler limitation, only one of the relationship and its inverse can declare an inverse: argument.

    class Dog: CoreStoreObject {
        let master = Relationship.ToOne<Person>("master")
    }
    class Person: CoreStoreObject {
        let pets = Relationship.ToManyOrdered<Dog>("pets", inverse: { $0.master })
    }
    

    Declaration

    Swift

    public convenience init(
        _ keyPath: KeyPathString,
        minCount: Int = 0,
        maxCount: Int = 0,
        inverse: @escaping (D) -> RelationshipContainer<D>.ToManyOrdered<O>,
        deleteRule: DeleteRule = .nullify,
        versionHashModifier: @autoclosure @escaping () -> String? = nil,
        renamingIdentifier: @autoclosure @escaping () -> String? = nil,
        affectedByKeyPaths: @autoclosure @escaping () -> Set<String> = [])

    Parameters

    keyPath

    the permanent name for this relationship.

    minCount

    the minimum number of objects in this relationship UNLESS THE RELATIONSHIP IS EMPTY. This means there might be zero objects in the relationship, which might be less than minCount. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    maxCount

    the maximum number of objects in this relationship. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    inverse

    the inverse relationship that is declared for the destination object. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object.

    deleteRule

    defines what happens to relationship when an object is deleted. Valid values are .nullify, .cascade, and .delete. Defaults to .nullify.

    versionHashModifier

    used to mark or denote a relationship as being a different “version” than another even if all of the values which affect persistence are equal. (Such a difference is important in cases where the properties are unchanged but the format or content of its data are changed.)

    renamingIdentifier

    used to resolve naming conflicts between models. When creating an entity mapping between entities in two managed object models, a source entity property and a destination entity property that share the same identifier indicate that a property mapping should be configured to migrate from the source to the destination. If unset, the identifier will be the property’s name.

    affectedByKeyPaths

    a set of key paths for properties whose values affect the value of the receiver. This is similar to NSManagedObject.keyPathsForValuesAffectingValue(forKey:).

  • Initializes the metadata for the relationship. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object. Make sure to declare this relationship’s inverse relationship on its destination object. Due to Swift’s compiler limitation, only one of the relationship and its inverse can declare an inverse: argument.

    class Dog: CoreStoreObject {
        let master = Relationship.ToOne<Person>("master")
    }
    class Person: CoreStoreObject {
        let pets = Relationship.ToManyOrdered<Dog>("pets", inverse: { $0.master })
    }
    

    Declaration

    Swift

    public convenience init(
        _ keyPath: KeyPathString,
        minCount: Int = 0,
        maxCount: Int = 0,
        inverse: @escaping (D) -> RelationshipContainer<D>.ToManyUnordered<O>,
        deleteRule: DeleteRule = .nullify,
        versionHashModifier: @autoclosure @escaping () -> String? = nil,
        renamingIdentifier: @autoclosure @escaping () -> String? = nil,
        affectedByKeyPaths: @autoclosure @escaping () -> Set<String> = [])

    Parameters

    keyPath

    the permanent name for this relationship.

    minCount

    the minimum number of objects in this relationship UNLESS THE RELATIONSHIP IS EMPTY. This means there might be zero objects in the relationship, which might be less than minCount. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    maxCount

    the maximum number of objects in this relationship. If the number of objects in the relationship do not satisfy minCount and maxCount, the transaction’s commit (or auto-commit) would fail with a validation error.

    inverse

    the inverse relationship that is declared for the destination object. All relationships require an “inverse”, so updates to to this object’s relationship are also reflected on its destination object.

    deleteRule

    defines what happens to relationship when an object is deleted. Valid values are .nullify, .cascade, and .delete. Defaults to .nullify.

    versionHashModifier

    used to mark or denote a relationship as being a different “version” than another even if all of the values which affect persistence are equal. (Such a difference is important in cases where the properties are unchanged but the format or content of its data are changed.)

    renamingIdentifier

    used to resolve naming conflicts between models. When creating an entity mapping between entities in two managed object models, a source entity property and a destination entity property that share the same identifier indicate that a property mapping should be configured to migrate from the source to the destination. If unset, the identifier will be the property’s name.

    affectedByKeyPaths

    a set of key paths for properties whose values affect the value of the receiver. This is similar to NSManagedObject.keyPathsForValuesAffectingValue(forKey:).

  • The relationship value

    Declaration

    Swift

    public var value: ReturnValueType { get set }

AnyKeyPathStringConvertible

  • Declaration

    Swift

    public var cs_keyPathString: String { get }

KeyPathStringConvertible

RelationshipKeyPathStringConvertible

RelationshipContainer.ToManyOrdered

Sequence

Collection

Operations

  • Assigns a sequence of objects to the relationship. The operation

    person.pets .= [dog, cat]
    

    is equivalent to

    person.pets.value = [dog, cat]
    

    Declaration

    Swift

    public static func .= <S>(relationship: RelationshipContainer<O>.ToManyOrdered<D>, newValue: S) where D == S.Element, S : Sequence
  • Assigns a sequence of objects to the relationship. The operation

    person.pets .= anotherPerson.pets
    

    is equivalent to

    person.pets.value = anotherPerson.pets.value
    

    Declaration

    Swift

    public static func .= <O2>(relationship: RelationshipContainer<O>.ToManyOrdered<D>, relationship2: RelationshipContainer<O2>.ToManyOrdered<D>) where O2 : CoreStoreObject
  • Compares equality between a relationship’s objects and a collection of objects

    if person.pets .== [dog, cat] { ... }
    

    is equivalent to

    if person.pets.value == [dog, cat] { ... }
    

    Declaration

    Swift

    public static func .== <C>(relationship: RelationshipContainer<O>.ToManyOrdered<D>, collection: C) -> Bool where D == C.Element, C : Collection
  • Compares equality between a collection of objects and a relationship’s objects

    if [dog, cat] .== person.pets { ... }
    

    is equivalent to

    if [dog, cat] == person.pets.value { ... }
    

    Declaration

    Swift

    public static func .== <C>(collection: C, relationship: RelationshipContainer<O>.ToManyOrdered<D>) -> Bool where D == C.Element, C : Collection
  • Compares equality between a relationship’s objects and a collection of objects

    if person.pets .== anotherPerson.pets { ... }
    

    is equivalent to

    if person.pets.value == anotherPerson.pets.value { ... }
    

    Declaration

    Swift

    public static func .== <O2>(relationship: RelationshipContainer<O>.ToManyOrdered<D>, relationship2: RelationshipContainer<O2>.ToManyOrdered<D>) -> Bool where O2 : CoreStoreObject