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KeyPath.swift
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import CoreData
func expression<R, V>(for keyPath: KeyPath<R, V>) -> NSExpression {
return NSExpression(forKeyPath: (keyPath as AnyKeyPath)._kvcKeyPathString!)
}
// MARK: Predicate
public func == <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs == rhs)
}
public func != <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs != rhs)
}
public func > <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs > rhs)
}
public func >= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs >= rhs)
}
public func < <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs < rhs)
}
public func <= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs <= rhs)
}
public func ~= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> Predicate<R> {
return Predicate(predicate: lhs ~= rhs)
}
public func << <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: [V]) -> Predicate<R> {
return Predicate(predicate: lhs << rhs)
}
public func << <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: Range<V>) -> Predicate<R> {
return Predicate(predicate: lhs << rhs)
}
// MARK: - NSPredicate
public func == <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) == NSExpression(forConstantValue: rhs)
}
public func != <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) != NSExpression(forConstantValue: rhs)
}
public func > <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) > NSExpression(forConstantValue: rhs)
}
public func >= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) >= NSExpression(forConstantValue: rhs)
}
public func < <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) < NSExpression(forConstantValue: rhs)
}
public func <= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) <= NSExpression(forConstantValue: rhs)
}
public func ~= <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: V) -> NSPredicate {
return expression(for: lhs) ~= NSExpression(forConstantValue: rhs)
}
public func << <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: [V]) -> NSPredicate {
return expression(for: lhs) << NSExpression(forConstantValue: rhs)
}
public func << <R : NSManagedObject, V>(lhs: KeyPath<R, V>, rhs: Range<V>) -> NSPredicate {
return expression(for: lhs) << NSExpression(forConstantValue: rhs)
}