WIP

Sources/DynamicObjectID.swift

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+//
+//  DynamicObject.swift
+//  CoreStore
+//
+//  Copyright © 2026 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import CoreData
+
+
+// MARK: - DynamicObjectID
+
+public struct DynamicObjectID<O: DynamicObject>: Hashable, ObjectRepresentation, Sendable {
+
+    /**
+     The associated `NSManagedObject` or `CoreStoreObject` entity class
+     */
+    public let entityClass: O.Type
+    
+    public init(
+        managedObjectID: NSManagedObjectID
+    ) {
+        
+        self.init(
+            entityClass: O.self,
+            managedObjectID: managedObjectID
+        )
+    }
+    
+    public init(
+        entityClass: O.Type,
+        managedObjectID: NSManagedObjectID
+    ) {
+
+        Internals.assert(
+            Internals.EntityIdentifier(entityClass) == Internals.EntityIdentifier(managedObjectID.entity),
+            "The \(Internals.typeName(managedObjectID)) does not belong to the entity \(Internals.typeName(entityClass))."
+        )
+        
+        self.entityClass = entityClass
+        self.managedObjectID = managedObjectID
+    }
+    
+    
+    // MARK: Equatable
+    
+    public static func ==(lhs: Self, rhs: Self) -> Bool {
+        
+        return lhs.managedObjectID == rhs.managedObjectID
+    }
+    
+    
+    // MARK: Hashable
+    
+    public func hash(into hasher: inout Hasher) {
+        
+        hasher.combine(self.managedObjectID)
+    }
+    
+    
+    // MARK: AnyObjectRepresentation
+    
+    @_spi(Internals)
+    public func cs_dataStack() -> DataStack? {
+        
+        return nil
+    }
+    
+    @_spi(Internals)
+    public func cs_id() -> NSManagedObjectID {
+        
+        return self.managedObjectID
+    }
+    
+    
+    // MARK: ObjectRepresentation
+    
+    public typealias ObjectType = O
+    
+    public func asPublisher(in dataStack: DataStack) -> ObjectPublisher<ObjectType> {
+        
+        let context = dataStack.unsafeContext()
+        return context.objectPublisher(managedObjectID: self.managedObjectID)
+    }
+    
+    public func asReadOnly(in dataStack: DataStack) -> ObjectType? {
+        
+        let context = dataStack.unsafeContext()
+        return context.fetchExisting(self.managedObjectID)
+    }
+    
+    public func asEditable(in transaction: BaseDataTransaction) -> ObjectType? {
+        
+        let context = transaction.unsafeContext()
+        return context.fetchExisting(self.managedObjectID)
+    }
+    
+    public func asSnapshot(in dataStack: DataStack) -> ObjectSnapshot<ObjectType>? {
+        
+        let context = dataStack.unsafeContext()
+        return ObjectSnapshot<ObjectType>(managedObjectID: self.managedObjectID, context: context)
+    }
+    
+    public func asSnapshot(in transaction: BaseDataTransaction) -> ObjectSnapshot<ObjectType>? {
+        
+        let context = transaction.unsafeContext()
+        return ObjectSnapshot<ObjectType>(managedObjectID: self.managedObjectID, context: context)
+    }
+    
+    
+    // MARK: Internal
+    
+    internal let managedObjectID: NSManagedObjectID
+    
+    internal var entityIdentifier: Internals.EntityIdentifier {
+        
+        return Internals.EntityIdentifier(self.managedObjectID.entity)
+    }
+}