mirror of
https://github.com/JohnEstropia/CoreStore.git
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102 lines
3.1 KiB
Swift
102 lines
3.1 KiB
Swift
//
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// CSTweak.swift
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// CoreStore
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//
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// Copyright © 2018 John Rommel Estropia
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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import Foundation
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import CoreData
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// MARK: - CSTweak
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/**
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The `CSTweak` serves as the Objective-C bridging type for `Tweak`.
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- SeeAlso: `Tweak`
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*/
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@objc
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public final class CSTweak: NSObject, CSFetchClause, CSQueryClause, CSDeleteClause, CoreStoreObjectiveCType {
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/**
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The block to customize the `NSFetchRequest`
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*/
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@objc
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public var block: (_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Void {
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return self.bridgeToSwift.closure
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}
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/**
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Initializes a `CSTweak` clause with a closure where the `NSFetchRequest` may be configured.
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- Important: `CSTweak`'s closure is executed only just before the fetch occurs, so make sure that any values captured by the closure is not prone to race conditions. Also, some utilities (such as `CSListMonitor`s) may keep `CSFetchClause`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
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- parameter block: the block to customize the `NSFetchRequest`
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*/
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@objc
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public convenience init(block: @escaping (_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Void) {
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self.init(Tweak(block))
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}
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// MARK: NSObject
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public override var description: String {
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return "(\(String(reflecting: type(of: self)))) \(self.bridgeToSwift.coreStoreDumpString)"
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}
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// MARK: CSFetchClause, CSQueryClause, CSDeleteClause
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@objc
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public func applyToFetchRequest(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) {
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self.bridgeToSwift.applyToFetchRequest(fetchRequest)
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}
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// MARK: CoreStoreObjectiveCType
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public let bridgeToSwift: Tweak
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public init(_ swiftValue: Tweak) {
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self.bridgeToSwift = swiftValue
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super.init()
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}
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}
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// MARK: - Tweak
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extension Tweak: CoreStoreSwiftType {
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// MARK: CoreStoreSwiftType
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public var bridgeToObjectiveC: CSTweak {
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return CSTweak(self)
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}
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}
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