mirror of
https://github.com/JohnEstropia/CoreStore.git
synced 2026-01-15 13:43:43 +01:00
98 lines
3.0 KiB
Swift
98 lines
3.0 KiB
Swift
//
|
|
// Where.swift
|
|
// HardcoreData
|
|
//
|
|
// Copyright (c) 2015 John Rommel Estropia
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
//
|
|
|
|
import Foundation
|
|
|
|
|
|
public func &&(left: Where, right: Where) -> Where {
|
|
|
|
return Where(NSCompoundPredicate(type: .AndPredicateType, subpredicates: [left.predicate, right.predicate]))
|
|
}
|
|
|
|
public func ||(left: Where, right: Where) -> Where {
|
|
|
|
return Where(NSCompoundPredicate(type: .OrPredicateType, subpredicates: [left.predicate, right.predicate]))
|
|
}
|
|
|
|
public prefix func !(clause: Where) -> Where {
|
|
|
|
return Where(NSCompoundPredicate(type: .NotPredicateType, subpredicates: [clause.predicate]))
|
|
}
|
|
|
|
|
|
// MARK: - Where
|
|
|
|
public struct Where: FetchClause {
|
|
|
|
// MARK: Public
|
|
|
|
public init(_ predicate: NSPredicate) {
|
|
|
|
self.predicate = predicate
|
|
}
|
|
|
|
public init() {
|
|
|
|
self.init(true)
|
|
}
|
|
|
|
public init(_ value: Bool) {
|
|
|
|
self.init(NSPredicate(value: value))
|
|
}
|
|
|
|
public init(_ format: String, _ args: NSObject...) {
|
|
|
|
self.init(NSPredicate(format: format, argumentArray: args))
|
|
}
|
|
|
|
public init(_ format: String, argumentArray: [AnyObject]?) {
|
|
|
|
self.init(NSPredicate(format: format, argumentArray: argumentArray))
|
|
}
|
|
|
|
public init(_ attributeName: AttributeName, isEqualTo value: NSObject?) {
|
|
|
|
self.init(value == nil
|
|
? NSPredicate(format: "\(attributeName) == nil")
|
|
: NSPredicate(format: "\(attributeName) == %@", value!))
|
|
}
|
|
|
|
public let predicate: NSPredicate
|
|
|
|
|
|
// MARK: QueryClause
|
|
|
|
public func applyToFetchRequest(fetchRequest: NSFetchRequest) {
|
|
|
|
if fetchRequest.predicate != nil {
|
|
|
|
HardcoreData.log(.Warning, message: "An existing predicate for the NSFetchRequest was overwritten by Where query clause.")
|
|
}
|
|
|
|
fetchRequest.predicate = self.predicate
|
|
}
|
|
}
|