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Transient Entities and Core Data | Cocoa Is My Girlfriend
Core Data has many features, one of which is the Transient attribute. This type of attribute on a Core Data entity is part of a data model, but is not persisted in your Core Data persistent store. If you open up the raw SQLite store file and peek at the schema, you will not find any transient attributes. These transient attributes are still handy despite no data being persisted to the data store.
Saving JSON to Core Data | Cocoa Is My Girlfriend
Hi, I’m new here. You may know me as @atomicbird on Twitter. Just a few days ago my book Core Data for iOS: Developing Data-Driven Applications for the iPad, iPhone, and iPod touch (co-written with the excellent Tim Isted) was published, and Matt invited me to contribute some Core Data tips to CIMGF. I’m going to start off discussing taking JSON data from a web service and converting it to Core Da
Core Data and Threads, Without the Headache | Cocoa Is My Girlfriend
I know I mentioned we would talk about customizing the fetch requests, however, I have been working on some code related to the Active Record Fetching project, which I am renaming to MagicalRecord, that is also just as useful as fetching–threading. Whenever most cocoa developers mention threading and Core Data in the same sentence, the reaction I see most often is that of mysticism and disbelief.
» Core Data Notes from iPhone Tech Talk petersteinberger.com
Some notes I thought they are important, delivered to you from Hamburg design with ui in mind normalisation <-> denormalisation willful introduction of repetition for performance dont do inheritance put blogs where they belong prefetching to get attributes more instantly setrelationshipkeypathsforprefetching, pass nsarray with “Songs” … batching: only deal with whats needed [fetch setFetchBatchSi
Cocoaの日々: CoreData - 大量データを扱う場合のメモリ利用量を減らす
データ件数は、Customerが 500件、Karteが6,000件（Customer１件につきKarte 12件）となっていて、それぞれを１つの CSVファイルへ書き出す。 処理は次のような感じになる。 NSMangedObjectContext* moc = [取得]; NSArray* customers = [moc Customer全件取得]; for (NSManagedObject* customer in customers) { NSArray* kartes = [moc Karte取得・条件：customer]; for (NSManagedObject* karte in kartes) { [CSV１行書き出し]; } }メモリのフットプリント（利用状況）はこんな感じ。 Customer, Karte を１件づつ読み込む度にメモリが消費され、フットプリントが増大し
iPhone DevCon 2010 | Cocoa Is My Girlfriend
Just finished with the iPhone Dev Con 2010 in San Diego and it was a very pleasant conference to go to. The organizers definitely have a nice balance and treated the speakers well. I enjoyed the trip and I hope that everyone who attended my sessions got something out of them. As I promised in the sessions, here are the slides and sample code. * [NSFetchedResultsController](http://cimgf.s3.amazonaw
Core Data Overview : 重要なクラス - Natsu's iPhone App
10.09.01 Core Data Overview : 重要なクラス ものすごく便利な機能がたくさんあってもなかなか使いこなすのは大変なCore Data。基本の登場人物をまとめてみた。全体像が見えているとリファレンスガイドも楽に読めるようになるし、何より、「やりたいこと」があったとき、何を調べればよいかの見当がつくようになる。 ということで、まずは根っこからCore Dataの「仕組み」を把握しよう。 ここで紹介する主な登場人物は以下。 NSPersistentStoreCoordinator NSManagedObjectContext NSManagedObjectModel NSManagedObject NSEntityDescription NSFetchRequest ここまではMac OS, iOS共通。iOSでは上記以外にNSFetchedResultsControl
Core Data and Enterprise iPhone Applications – Protecting Your Data
Core Data and Enterprise iPhone Applications – Protecting Your Data Introduction NewsGator’s primary software offering is a product called Social Sites which basically adds social networking aspects to Microsoft SharePoint. My role in this product is to create the iOS device apps that interact with the server. My app is pulling in a lot of data that an enterprise customer considers *very* sensitiv
CoreData - Object ID（その４）Object ID から NSManagedObject を取得する #2
MacOSXプログラミング。毎日更新。 話題： Cocoa, Objective-C, Snow Leopard （前回）Cocoaの日々: CoreData - Object ID（その３）Object ID から NSManagedObject を取得する Object ID から NSManagedObject を取得するメソッドは、前回の -[objectWithID:] を含め３つある。 クラス：NSManagedObjectContext - (NSManagedObject *)objectWithID:(NSManagedObjectID * - (NSManagedObject *)objectRegisteredForID:(NSManagedObjectID *)objectID - (NSManagedObject *)existingObjectWithID:(N
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Yuichi Fujishige on Twitter: "idしかいらない時は setResultType:NSManagedObjectIDResultType + setIncludesPropertyValues:NO"
CoreData のトラブルシュート
iCloud と CoreData
Kanta on Twitter: "tweet id を CoreDataで扱う話。 ios - How to store Twitter ID in Core Data objects - Stack Overflow http://t.co/kPJiirBn"
Core Data をマルチスレッド下で使用する
蒼い惑星 on Twitter: "“@natsun_happy: さきほどのブログ記事でもちょっと触れたCore Data for iPhoneの著者によるポスト。JSONのデータを的確に、かつ安全にCore Dataに保存する。... http://j.mp/iKsols” @myen メモメモ！"
Shu M 🇺🇦 on Twitter: "RT @xcatsan: Core Data のまるごと暗号化方法。NSFileManager のNSFileProtectionComplete を使う。合わせてパスコード設定も必要か。 Protecting Your Data « Nick Harris http:/ ..."
GitHub - gnue/synthesize_numbers: NSManagedObject の数値アクセッサを自動生成するスクリプト
http://twitter.com/cathandnya/statuses/25480465381
Re-Ordering NSFetchedResultsController | Cocoa Is My Girlfriend