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Code Issues 95 Packages Projects Releases 10 Wiki Activity

changed concurrency architecture. Transactions are now done on a direct child context of the root saving context (instead of a main context child)

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This commit is contained in:
John Rommel Estropia
2015-03-05 21:31:38 +08:00
parent 1fae78434f
commit e64fc3d2d8
4 changed files with 25 additions and 10 deletions
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4
HardcoreData/DataStack+Transaction.swift
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@@ -41,7 +41,7 @@ public extension DataStack {
public func performTransaction(closure: (transaction: AsynchronousDataTransaction) -> Void) {
AsynchronousDataTransaction(
mainContext: self.mainContext,
mainContext: self.rootSavingContext,
queue: self.childTransactionQueue,
closure: closure).perform()
}
@@ -55,7 +55,7 @@ public extension DataStack {
public func performTransactionAndWait(closure: (transaction: SynchronousDataTransaction) -> Void) -> SaveResult? {
return SynchronousDataTransaction(
mainContext: self.mainContext,
mainContext: self.rootSavingContext,
queue: self.childTransactionQueue,
closure: closure).performAndWait()
}

19
HardcoreData/DataStack.swift
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@@ -45,11 +45,14 @@ public class DataStack {
// MARK: Public
/**
Initializes a DataStack from merged model in the app bundle.
Initializes a DataStack from a model created by merging all the models found in all bundles.
*/
public convenience init() {
self.init(managedObjectModel: NSManagedObjectModel.mergedModelFromBundles(NSBundle.allBundles())!)
let mergedModel: NSManagedObjectModel! = NSManagedObjectModel.mergedModelFromBundles(NSBundle.allBundles())
HardcoreData.assert(mergedModel != nil, "Could not create a merged <\(NSManagedObjectModel.self)> from all bundles.")
self.init(managedObjectModel: mergedModel)
}
/**
@@ -59,8 +62,11 @@ public class DataStack {
*/
public convenience init(modelName: String) {
let modelFilePath = NSBundle.mainBundle().pathForResource(modelName, ofType: "momd")!
let managedObjectModel = NSManagedObjectModel(contentsOfURL: NSURL(fileURLWithPath: modelFilePath)!)!
let modelFilePath: String! = NSBundle.mainBundle().pathForResource(modelName, ofType: "momd")
HardcoreData.assert(modelFilePath != nil, "Could not find a \"momd\" resource from the main bundle.")
let managedObjectModel: NSManagedObjectModel! = NSManagedObjectModel(contentsOfURL: NSURL(fileURLWithPath: modelFilePath)!)
HardcoreData.assert(managedObjectModel != nil, "Could not create an <\(NSManagedObjectModel.self)> from the resource at path \"\(modelFilePath)\".")
self.init(managedObjectModel: managedObjectModel)
}
@@ -218,7 +224,8 @@ public class DataStack {
where (
resetStoreOnMigrationFailure
&& (error.code == NSPersistentStoreIncompatibleVersionHashError
|| error.code == NSMigrationMissingSourceModelError)
|| error.code == NSMigrationMissingSourceModelError
|| error.code == NSMigrationError)
&& error.domain == NSCocoaErrorDomain
) {
@@ -259,6 +266,7 @@ public class DataStack {
// MARK: Internal
internal let rootSavingContext: NSManagedObjectContext
internal let mainContext: NSManagedObjectContext
internal let childTransactionQueue: GCDQueue = .createSerial("com.hardcoredata.datastack.childtransactionqueue")
@@ -274,6 +282,5 @@ public class DataStack {
private typealias EntityNameType = String
private let coordinator: NSPersistentStoreCoordinator
private let rootSavingContext: NSManagedObjectContext
private let entityNameMapping: [EntityClassNameType: EntityNameType]
}

10
HardcoreData/NSManagedObject+Transaction.swift
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@@ -60,7 +60,15 @@ internal extension NSManagedObject {
if objectID.temporaryID {
var error: NSError?
if !context.obtainPermanentIDsForObjects([self], error: &error) {
var didSucceed: Bool?
if let managedObjectContext = self.managedObjectContext {
managedObjectContext.performBlockAndWait {
didSucceed = managedObjectContext.obtainPermanentIDsForObjects([self], error: &error)
}
}
if didSucceed != true {
HardcoreData.handleError(
error ?? NSError(hardcoreDataErrorCode: .UnknownError),

2
HardcoreData/NSManagedObjectContext+Transaction.swift
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@@ -54,7 +54,7 @@ internal extension NSManagedObjectContext {
context.parentContext = self
context.parentStack = self.parentStack
context.setupForHardcoreDataWithContextName("com.hardcoredata.temporarycontext")
context.shouldCascadeSavesToParent = (self.concurrencyType == .MainQueueConcurrencyType)
context.shouldCascadeSavesToParent = (self.parentStack?.rootSavingContext == self)
return context
}