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79 lines
2.6 KiB
Swift
79 lines
2.6 KiB
Swift
//
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// XcodeDataModelSchema.swift
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// CoreStore
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//
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// Copyright © 2017 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 CoreData
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import Foundation
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// MARK: - XcodeDataModelSchema
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public final class XcodeDataModelSchema: DynamicSchema {
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public required init(modelVersion: ModelVersion, modelVersionFileURL: URL) {
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CoreStore.assert(
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NSManagedObjectModel(contentsOf: modelVersionFileURL) != nil,
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"Could not find the \"\(modelVersion).mom\" version file for the model at URL \"\(modelVersionFileURL)\"."
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)
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self.modelVersion = modelVersion
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self.modelVersionFileURL = modelVersionFileURL
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}
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// MARK: DynamicSchema
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public let modelVersion: ModelVersion
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public func rawModel() -> NSManagedObjectModel {
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if let cachedRawModel = self.cachedRawModel {
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return cachedRawModel
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}
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if let rawModel = NSManagedObjectModel(contentsOf: self.modelVersionFileURL) {
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self.cachedRawModel = rawModel
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return rawModel
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}
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CoreStore.abort("Could not create an \(cs_typeName(NSManagedObjectModel.self)) from the model at URL \"\(self.modelVersionFileURL)\".")
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}
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// MARK: Internal
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internal let modelVersionFileURL: URL
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private lazy var rootModelFileURL: URL = cs_lazy { [unowned self] in
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return self.modelVersionFileURL.deletingLastPathComponent()
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}
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// MARK: Private
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private weak var cachedRawModel: NSManagedObjectModel?
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}
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