mirror of
https://github.com/JohnEstropia/CoreStore.git
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109 lines
3.1 KiB
Swift
109 lines
3.1 KiB
Swift
//
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// ObjectRepresentation.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 CoreData
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// MARK - ObjectRepresentation
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/**
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An object that acts as interfaces for `CoreStoreObject`s or `NSManagedObject`s
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*/
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public protocol ObjectRepresentation {
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/**
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The object type represented by this protocol
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*/
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associatedtype ObjectType: DynamicObject
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/**
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The internal ID for the object.
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*/
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func objectID() -> ObjectType.ObjectID
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/**
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An instance that may be observed for object changes.
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*/
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func asLiveObject(in dataStack: DataStack) -> LiveObject<ObjectType>?
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/**
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An instance that may be mutated within a transaction.
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*/
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func asEditable(in transaction: BaseDataTransaction) -> ObjectType?
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/**
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A thread-safe `struct` that is a full-copy of the object's properties
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*/
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func asSnapshot(in dataStack: DataStack) -> ObjectSnapshot<ObjectType>?
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/**
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A thread-safe `struct` that is a full-copy of the object's properties
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*/
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func asSnapshot(in transaction: BaseDataTransaction) -> ObjectSnapshot<ObjectType>?
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/**
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An instance that may be observed for property-specific changes.
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*/
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func asObjectMonitor(in dataStack: DataStack) -> ObjectMonitor<ObjectType>?
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}
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extension LiveObject {
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public static func cs_object(in context: NSManagedObjectContext) -> LiveObject<O>? {
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return nil
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}
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}
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extension ObjectMonitor {
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public static func cs_object(in context: NSManagedObjectContext) -> LiveObject<D>? {
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return nil
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}
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}
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extension NSManagedObject: ObjectRepresentation {
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}
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extension CoreStoreObject: ObjectRepresentation {
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}
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extension DynamicObject where Self: ObjectRepresentation {
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public static func cs_object(in context: NSManagedObjectContext) -> LiveObject<Self>? {
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fatalError()
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}
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public func cs_rawObject(in context: NSManagedObjectContext) -> NSManagedObject? {
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return context.fetchExisting(self.cs_id())
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}
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}
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