CoreDataStack.swift
import CoreData
class CoreDataStack: NSObject {
let context: NSManagedObjectContext
let coordinator: NSPersistentStoreCoordinator
let model: NSManagedObjectModel
let store: NSPersistentStore?
static func defaultStack()->CoreDataStack{
return instance
}
private static let instance = CoreDataStack()
private override init() {
//构建托管对象模型
let bundle=NSBundle.mainBundle()
let modelURL=bundle.URLForResource("Test", withExtension:"momd")!
model=NSManagedObjectModel(contentsOfURL: modelURL)!
//构建持久化存储助理
coordinator=NSPersistentStoreCoordinator(managedObjectModel:model)
//构建托管对象上下文，并且将助理连接到上下文
context=NSManagedObjectContext(concurrencyType:.MainQueueConcurrencyType)
context.persistentStoreCoordinator=coordinator
//构建持久化存储
let manager=NSFileManager.defaultManager()
let urls=manager.URLsForDirectory(.DocumentDirectory,inDomains:.UserDomainMask)
let documentsURL=urls.first!
let storeURL=documentsURL.URLByAppendingPathComponent("Test")
store=(try! coordinator.addPersistentStoreWithType(NSSQLiteStoreType,configuration:nil,URL:storeURL, options:nil))
}
func saveContext(){
if context.hasChanges{
do{
try context.save()
}catch{
print("Save failed......")
}
}
}
}
