mirror of
https://github.com/JohnEstropia/CoreStore.git
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83 lines
2.6 KiB
Swift
83 lines
2.6 KiB
Swift
//
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// CoreStoreFetchRequest.swift
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// CoreStore
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//
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// Copyright © 2019 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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import ObjectiveC
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// MARK: - Internal
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extension Internals {
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// MARK: - CoreStoreFetchRequest
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// Bugfix for NSFetchRequest messing up memory management for `affectedStores`
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// http://stackoverflow.com/questions/14396375/nsfetchedresultscontroller-crashes-in-ios-6-if-affectedstores-is-specified
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internal final class CoreStoreFetchRequest<T: NSFetchRequestResult>: NSFetchRequest<NSFetchRequestResult> {
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@nonobjc
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internal func safeAffectedStores() -> [NSPersistentStore]? {
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return self.copiedAffectedStores as! [NSPersistentStore]?
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}
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@nonobjc @inline(__always)
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internal func staticCast() -> NSFetchRequest<T> {
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return unsafeBitCast(self, to: NSFetchRequest<T>.self)
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}
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@nonobjc @inline(__always)
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internal func dynamicCast<U>() -> NSFetchRequest<U> {
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return unsafeBitCast(self, to: NSFetchRequest<U>.self)
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}
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// MARK: NSFetchRequest
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@objc dynamic
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override var affectedStores: [NSPersistentStore]? {
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get {
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return super.affectedStores
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}
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set {
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self.copiedAffectedStores = (newValue as NSArray?)?.copy() as! NSArray?
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super.affectedStores = newValue
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}
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}
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// MARK: Private
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private var copiedAffectedStores: NSArray?
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private var releaseArray: Unmanaged<NSArray>?
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}
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}
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