Entity Item model

Author: diegorv

iOS8-Swift-TableView-CoreData-Example/Item.swift

@@ -9,8 +9,74 @@
 import Foundation
 import CoreData
 
+// MODEL
 class Item: NSManagedObject {
+	
+	@NSManaged var name: String
+	
+	/// Function to initialize a new Item
+	convenience init(name: String, inManagedObjectContext managedObjectContext: NSManagedObjectContext) {
+		let entity = NSEntityDescription.entityForName("Item", inManagedObjectContext: managedObjectContext)!
+		self.init(entity: entity, insertIntoManagedObjectContext: managedObjectContext)
+		self.name = name
+	}
+	
+	/// Function to get all CoreData values
+	///
+	/// :param: managedObjectContext CoreData Connection
+	///
+	class func fetchAll(managedObjectContext: NSManagedObjectContext) -> [Item] {
+		let listagemCoreData             = NSFetchRequest(entityName: "Item")
+		
+		// Sort alphabetical by field "name"
+		let orderByName                  = NSSortDescriptor(key: "name", ascending: true, selector: "caseInsensitiveCompare:")
+		listagemCoreData.sortDescriptors = [orderByName]
+		
+		// Get items from CoreData
+		return managedObjectContext.executeFetchRequest(listagemCoreData, error: nil) as? [Item] ?? []
+	}
+	
+	/// Function to search item by name
+	///
+	/// :param: name Item name
+	/// :param: managedObjectContext CoreData Connection
+	///
+	class func search(name: String, inManagedObjectContext managedObjectContext: NSManagedObjectContext) -> Item? {
+		let fetchRequest       = NSFetchRequest(entityName: "Item")
+		fetchRequest.predicate = NSPredicate(format: "name = %@", name)
+		
+		let result						 = managedObjectContext.executeFetchRequest(fetchRequest, error: nil) as? [Item]
+		return result?.first
+	}
+	
+	/// Function to check duplicate item
+	///
+	/// :param: name Item name
+	/// :param: managedObjectContext CoreData Connection
+	///
+	class func checkDuplicate(name: String, inManagedObjectContext managedObjectContext: NSManagedObjectContext) -> Bool {
+		return search(name, inManagedObjectContext: managedObjectContext) != nil
+	}
 
-    @NSManaged var name: String
-
+	/// Function to delete a item
+	///
+	/// :param: managedObjectContext CoreData Connection
+	///
+	func destroy(managedObjectContext: NSManagedObjectContext) {
+		managedObjectContext.deleteObject(self)
+	}
+	
+	/// Function to save CoreData values
+	///
+	/// :param: managedObjectContext CoreData Connection
+	///
+	func save(managedObjectContext: NSManagedObjectContext) {
+		var error: NSErrorPointer = nil
+		
+		if(managedObjectContext.save(error)) {
+			if (error != nil) {
+				println("Error on save: \(error.debugDescription)")
+			}
+		}
+	}
 }