mirror of
https://github.com/JohnEstropia/CoreStore.git
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159 lines
4.7 KiB
Swift
159 lines
4.7 KiB
Swift
//
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// From.swift
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// HardcoreData
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//
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// Copyright (c) 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: - From
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/**
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A `Form` clause binds the `NSManagedObject` entity type to the generics type system.
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*/
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public struct From<T: NSManagedObject> {
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// MARK: Public
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public init(){
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self.findPersistentStores = { _ in nil }
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}
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public init(_ entity: T.Type) {
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self.findPersistentStores = { _ in nil }
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}
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public init(_ configurations: String...) {
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self.init(configurations: configurations)
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}
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public init(_ configurations: [String]) {
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self.init(configurations: configurations)
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}
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public init(_ entity: T.Type, _ configurations: String...) {
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self.init(configurations: configurations)
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}
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public init(_ entity: T.Type, _ configurations: [String]) {
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self.init(configurations: configurations)
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}
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public init(_ storeURLs: NSURL...) {
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self.init(storeURLs: storeURLs)
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}
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public init(_ storeURLs: [NSURL]) {
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self.init(storeURLs: storeURLs)
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}
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public init(_ entity: T.Type, _ storeURLs: NSURL...) {
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self.init(storeURLs: storeURLs)
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}
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public init(_ entity: T.Type, _ storeURLs: [NSURL]) {
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self.init(storeURLs: storeURLs)
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}
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public init(_ persistentStores: NSPersistentStore...) {
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self.init(persistentStores: persistentStores)
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}
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public init(_ persistentStores: [NSPersistentStore]) {
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self.init(persistentStores: persistentStores)
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}
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public init(_ entity: T.Type, _ persistentStores: NSPersistentStore...) {
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self.init(persistentStores: persistentStores)
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}
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public init(_ entity: T.Type, _ persistentStores: [NSPersistentStore]) {
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self.init(persistentStores: persistentStores)
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}
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// MARK: Internal
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internal func applyToFetchRequest(fetchRequest: NSFetchRequest, context: NSManagedObjectContext) {
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fetchRequest.entity = context.entityDescriptionForEntityClass(T.self)
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fetchRequest.affectedStores = self.findPersistentStores(context: context)
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}
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// MARK: Private
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private let findPersistentStores: (context: NSManagedObjectContext) -> [NSPersistentStore]?
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private init(configurations: [String]) {
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let configurationsSet = Set(configurations)
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self.findPersistentStores = { (context: NSManagedObjectContext) -> [NSPersistentStore]? in
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return context.parentStack?.persistentStoresForEntityClass(T.self)?.filter {
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return configurationsSet.contains($0.configurationName)
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}
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}
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}
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private init(storeURLs: [NSURL]) {
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let storeURLsSet = Set(storeURLs)
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self.findPersistentStores = { (context: NSManagedObjectContext) -> [NSPersistentStore]? in
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return context.parentStack?.persistentStoresForEntityClass(T.self)?.filter {
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return $0.URL != nil && storeURLsSet.contains($0.URL!)
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}
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}
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}
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private init(persistentStores: [NSPersistentStore]) {
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let persistentStores = Set(persistentStores)
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self.findPersistentStores = { (context: NSManagedObjectContext) -> [NSPersistentStore]? in
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return context.parentStack?.persistentStoresForEntityClass(T.self)?.filter {
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return persistentStores.contains($0)
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}
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}
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}
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}
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