CoreData insertNewObjectForEntityForName Causing Crash - core-data

Question

I've been chasing a bug for a while now and I can't figure it out. I have a class that takes a bunch of parsed data and then calls a method to create new core data "Article" object for each element created from the parsed data. I've shown how I declare the NSManagedObjectContext below.
You will also see the method
Article.createFLOArticleWithStructure(element, inManagedObjectContext: self.articleContext)
I placed this method in an extension to clean up the code. The method is show below.
import Foundation
class FLODataHandler : NSObject, FLOConnectionHandlerDelegate, FLOParserHandlerDelegate, TriathleteParserHandlerDelegate, VeloNewsParserHandlerDelegate, CyclingNewsParserHandlerDelegate, RoadBikeActionParserHandlerDelegate, IronmanParserHandlerDelegate
{
let appDelegate: AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
lazy var articleContext: NSManagedObjectContext = self.appDelegate.managedObjectContext!
func floParserHandlerDidFinishParsing(parserHandler : FLOParserHandler)
{
for element in self.floParserHandler!.XMLParsedDataArray!
{
// The pubDate, tilte and link and indicator have been added to the titleLinkArray. I will now add the data to a Core Data Entity
// in the Article+NewsFeedArticle class.
Article.createFLOArticleWithStructure(element, inManagedObjectContext: self.articleContext)
}
}
Extension Code
extension Article
{
class func createFLOArticleWithStructure(articleStructure: DateTitleLink, inManagedObjectContext context: NSManagedObjectContext) -> (Article)
{
// Core data is much simpler in Swift. I have not commented this code since I do not know if it's working yet.
var article = Article()
//var entity = NSEntityDescription("Article", inManagedObjectContext: context)
let fetchRequest = NSFetchRequest(entityName: "Article")
let predicate = NSPredicate(format: "feed == 'FLO Cycling' AND title == %#", articleStructure.title!)
let sortDescriptor = NSSortDescriptor(key: "pubDate", ascending: true)
fetchRequest.sortDescriptors = [sortDescriptor]
// Set up NSError
var fetchError : NSError?
// When you perform a fetch the returned object is an array of the Atricle Entities.
let fetchedObjects = context.executeFetchRequest(fetchRequest, error: &fetchError) as! [Article]
if fetchedObjects.count > 1
{
println("Error! in Article+NewFeedArticle.swift")
}
else if fetchedObjects.count == 0
{
article = NSEntityDescription.insertNewObjectForEntityForName("Article", inManagedObjectContext: context) as! Article
article.feed = "FLO Cycling"
article.pubDate = articleStructure.date!
article.title = articleStructure.title!
article.link = articleStructure.link!
article.theNewArticle = NSNumber(int: 1)
var error : NSError?
if(context.save(&error))
{
println(error!.localizedDescription)
}
}
else if fetchedObjects.count == 1
{
article = fetchedObjects[fetchedObjects.endIndex - 1]
}
return article
}
When I run the code I get stopped on the following line of the extension code and receive the following errors.
article = NSEntityDescription.insertNewObjectForEntityForName("Article", inManagedObjectContext: context) as! Article
CoreData: error: Failed to call designated initializer on
NSManagedObject class 'FLOCycling1_1_1.Article' CoreData: warning:
Unable to load class named 'Article' for entity 'Article'. Class not
found, using default NSManagedObject instead. Could not cast value of
type 'NSManagedObject_Article_' (0x7fe59c3515e0) to
'FLOCycling1_1_1.Article' (0x106139f70).
I've read online about using a prefix in the data model. I've added this to no avail. If you have any idea how I can fix this error I would appreciate the help.
ADDED****
Here is the Article.swift file on request.
import Foundation
import CoreData
#objc class Article: NSManagedObject
{
#NSManaged var feed: String
#NSManaged var link: String
#NSManaged var pubDate: NSDate
#NSManaged var theNewArticle: NSNumber
#NSManaged var title: String
}
Take care,
Jon

Answer 1

The issue had to do with my declaration of Article in this line here.
var article = Article()
In the Swift version calling the line of code above allocates and initializes memory for the Article. In the Objective-C version of my code I called the following.
Article *article = nil;
While I am not sure why, allocating and initializing the Article is the issue. I found this post here about a similar error.
Failed to call designated initializer on NSManagedObject class 'ClassName'
To fix this I changed the code to
var article = Article?()
To be clear, I also changed the Article class to ProjectName.Article.
I hope this helps someone else.
Take care,
Jon