mirror of
https://github.com/JohnEstropia/CoreStore.git
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96 lines
3.9 KiB
Swift
96 lines
3.9 KiB
Swift
//
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// NSManagedObject+Convenience.swift
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// CoreStore
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//
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// Copyright © 2015 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: - NSFetchedResultsController
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public extension NSFetchedResultsController {
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/**
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Utility for creating an `NSFetchedResultsController` from a `DataStack`. This is useful to partially support Objective-C classes by passing an `NSFetchedResultsController` instance instead of a `ListMonitor`.
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*/
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public static func createForStack<T: NSManagedObject>(dataStack: DataStack, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, fetchClauses: [FetchClause]) -> NSFetchedResultsController {
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return CoreStoreFetchedResultsController<T>(
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context: dataStack.mainContext,
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fetchRequest: fetchRequest,
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from: from,
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sectionBy: sectionBy,
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fetchClauses: fetchClauses
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)
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}
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// MARK: Internal
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internal static func createFromContext<T: NSManagedObject>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, fetchClauses: [FetchClause]) -> NSFetchedResultsController {
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return CoreStoreFetchedResultsController<T>(
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context: context,
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fetchRequest: fetchRequest,
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from: from,
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sectionBy: sectionBy,
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fetchClauses: fetchClauses
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)
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}
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// MARK: Deprecated
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@available(*, deprecated=1.5.2, message="Use NSFetchedResultsController.createForStack(_:fetchRequest:from:sectionBy:fetchClauses:) to create NSFetchedResultsControllers directly")
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public convenience init<T: NSManagedObject>(dataStack: DataStack, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, fetchClauses: [FetchClause]) {
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let context = dataStack.mainContext
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from?.applyToFetchRequest(fetchRequest, context: context, applyAffectedStores: false)
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for clause in fetchClauses {
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clause.applyToFetchRequest(fetchRequest)
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}
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if let from = from {
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from.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
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}
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else {
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guard let from = (fetchRequest.entity.flatMap { $0.managedObjectClassName }).flatMap(NSClassFromString).flatMap(From.init) else {
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fatalError("Attempted to create an \(typeName(NSFetchedResultsController)) without a From clause or an NSEntityDescription.")
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}
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from.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
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}
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self.init(
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fetchRequest: fetchRequest,
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managedObjectContext: context,
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sectionNameKeyPath: sectionBy?.sectionKeyPath,
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cacheName: nil
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)
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}
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}
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