Where

public struct Where<D> : WhereClauseType, FetchClause, QueryClause, DeleteClause, Hashable where D : DynamicObject

The Where clause specifies the conditions for a fetch or a query.

  • Combines two Where predicates together using AND operator

    Declaration

    Swift

    public static func && (left: Where<D>, right: Where<D>) -> Where<D>
  • Combines two Where predicates together using OR operator

    Declaration

    Swift

    public static func || (left: Where<D>, right: Where<D>) -> Where<D>
  • Inverts the predicate of a Where clause using NOT operator

    Declaration

    Swift

    public prefix static func ! (clause: Where<D>) -> Where<D>
  • Combines two Where predicates together using AND operator.

    Declaration

    Swift

    public static func &&? (left: Where<D>, right: Where<D>?) -> Where<D>

    Return Value

    left if right is nil, otherwise equivalent to (left && right)

  • Combines two Where predicates together using AND operator.

    Declaration

    Swift

    public static func &&? (left: Where<D>?, right: Where<D>) -> Where<D>

    Return Value

    right if left is nil, otherwise equivalent to (left && right)

  • Combines two Where predicates together using OR operator.

    Declaration

    Swift

    public static func ||? (left: Where<D>, right: Where<D>?) -> Where<D>

    Return Value

    left if right is nil, otherwise equivalent to (left || right)

  • Combines two Where predicates together using OR operator.

    Declaration

    Swift

    public static func ||? (left: Where<D>?, right: Where<D>) -> Where<D>

    Return Value

    right if left is nil, otherwise equivalent to (left || right)

  • Initializes a Where clause with a predicate that always evaluates to true

    Declaration

    Swift

    public init()
  • Initializes a Where clause with an existing Where clause.

    Declaration

    Swift

    public init(_ clause: Where<D>)

    Parameters

    clause

    the existing Where clause.

  • Initializes a Where clause with a predicate that always evaluates to the specified boolean value

    Declaration

    Swift

    public init(_ value: Bool)

    Parameters

    value

    the boolean value for the predicate

  • Initializes a Where clause with a predicate using the specified string format and arguments

    Declaration

    Swift

    public init(_ format: String, _ args: Any...)

    Parameters

    format

    the format string for the predicate

    args

    the arguments for format

  • Initializes a Where clause with a predicate using the specified string format and arguments

    Declaration

    Swift

    public init(_ format: String, argumentArray: [Any]?)

    Parameters

    format

    the format string for the predicate

    argumentArray

    the arguments for format

  • Initializes a Where clause that compares equality to nil

    Declaration

    Swift

    public init(_ keyPath: KeyPathString, isEqualTo null: Void?)

    Parameters

    keyPath

    the keyPath to compare with

    null

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<U>(_ keyPath: KeyPathString, isEqualTo value: U?) where U : QueryableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<D>(_ keyPath: KeyPathString, isEqualTo object: D?) where D : DynamicObject

    Parameters

    keyPath

    the keyPath to compare with

    object

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init(_ keyPath: KeyPathString, isEqualTo objectID: NSManagedObjectID)

    Parameters

    keyPath

    the keyPath to compare with

    objectID

    the arguments for the == operator

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<S>(_ keyPath: KeyPathString, isMemberOf list: S) where S : Sequence, S.Element : QueryableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<S>(_ keyPath: KeyPathString, isMemberOf list: S) where S : Sequence, S.Element : DynamicObject

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<S>(_ keyPath: KeyPathString, isMemberOf list: S) where S : Sequence, S.Element : NSManagedObjectID

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Declaration

    Swift

    public let predicate: NSPredicate
  • Declaration

    Swift

    public init(_ predicate: NSPredicate)
  • Declaration

    Swift

    public typealias ObjectType = D
  • Declaration

    Swift

    public static func == (lhs: Where, rhs: Where) -> Bool
  • Declaration

    Swift

    public func hash(into hasher: inout Hasher)
  • Declaration

    Swift

    public var debugDescription: String { get }
  • Type-safe keyPath chain usable in query/fetch expressions.

    let expression: Where<Pet>.Expression = (\.master ~ \.name)
    let owner = CoreStore.fetchOne(
       From<Pet>().where(expression == "John")
    )
    
    See more

    Declaration

    Swift

    public struct Expression<T, V> : CustomStringConvertible, DynamicKeyPath where T : WhereExpressionTrait
  • Initializes a Where clause that compares equality to nil

    Declaration

    Swift

    public init<V>(_ keyPath: KeyPath<D, V>, isEqualTo null: Void?) where V : QueryableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    null

    the arguments for the == operator

  • Initializes a Where clause that compares equality to nil

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, O>, isEqualTo null: Void?) where O : DynamicObject

    Parameters

    keyPath

    the keyPath to compare with

    null

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<V>(_ keyPath: KeyPath<D, V>, isEqualTo value: V?) where V : QueryableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, O>, isEqualTo value: O?) where O : DynamicObject

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, O>, isEqualTo objectID: NSManagedObjectID) where O : DynamicObject

    Parameters

    keyPath

    the keyPath to compare with

    objectID

    the arguments for the == operator

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<V, S>(_ keyPath: KeyPath<D, V>, isMemberOf list: S) where V : QueryableAttributeType, V == S.Element, S : Sequence

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<O, S>(_ keyPath: KeyPath<D, O>, isMemberOf list: S) where O : DynamicObject, O == S.Element, S : Sequence

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<O, S>(_ keyPath: KeyPath<D, O>, isMemberOf list: S) where O : DynamicObject, S : Sequence, S.Element : NSManagedObjectID

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares equality to nil

    Declaration

    Swift

    public init<V>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<V>>, isEqualTo null: Void?) where V : ImportableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    null

    the arguments for the == operator

  • Initializes a Where clause that compares equality to nil

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, RelationshipContainer<D>.ToOne<O>>, isEqualTo null: Void?) where O : CoreStoreObject

    Parameters

    keyPath

    the keyPath to compare with

    null

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<V>(_ keyPath: KeyPath<D, ValueContainer<D>.Required<V>>, isEqualTo value: V?) where V : ImportableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<V>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<V>>, isEqualTo value: V?) where V : ImportableAttributeType

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, RelationshipContainer<D>.ToOne<O>>, isEqualTo value: O?) where O : CoreStoreObject

    Parameters

    keyPath

    the keyPath to compare with

    value

    the arguments for the == operator

  • Initializes a Where clause that compares equality

    Declaration

    Swift

    public init<O>(_ keyPath: KeyPath<D, RelationshipContainer<D>.ToOne<O>>, isEqualTo objectID: NSManagedObjectID) where O : CoreStoreObject

    Parameters

    keyPath

    the keyPath to compare with

    objectID

    the arguments for the == operator

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<V, S>(_ keyPath: KeyPath<D, ValueContainer<D>.Required<V>>, isMemberOf list: S) where V : ImportableAttributeType, V == S.Element, S : Sequence

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<V, S>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<V>>, isMemberOf list: S) where V : ImportableAttributeType, V == S.Element, S : Sequence

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<O, S>(_ keyPath: KeyPath<D, RelationshipContainer<D>.ToOne<O>>, isMemberOf list: S) where O : CoreStoreObject, O == S.Element, S : Sequence

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause that compares membership

    Declaration

    Swift

    public init<O, S>(_ keyPath: KeyPath<D, RelationshipContainer<D>.ToOne<O>>, isMemberOf list: S) where O : CoreStoreObject, S : Sequence, S.Element : NSManagedObjectID

    Parameters

    keyPath

    the keyPath to compare with

    list

    the sequence to check membership of

  • Initializes a Where clause from a closure

    Declaration

    Swift

    public init(_ condition: (D) -> Where<D>)

    Parameters

    condition

    closure that returns the Where clause