nsmanagedobjectcontext

相关标签：javascript jquery android 多少钱 iPhone

Strategy for core data sales register

I have been trying to use a second managed object context (MOC) in core data to add sales which will be listed in an NSTableView as pending, until the user presses a button to process the transactions[详细]

2023-04-05 09:06 分类：问答
When should we call ![[self ListController].FetchController performFetch:&error]?

+(void)CoreSetAllBiz : (NSString *) searchTerm{ [self ListController].FetchController.fetchRequest.predicate=[BNUtilitiesQuick getFinalPredicate:searchTerm];[详细]

2023-04-05 04:27 分类：问答
How to delete an unsaved managed object safely?

My app offers some sort of editor functionality for \"text articles\". My editor has two modes. When the editor loads, I create a managed object if it hasn\'t been passed in through the initializer. W[详细]

2023-04-04 22:11 分类：问答
Core Data: nil managed object context on my managed object

I\'m using 2 managed object contexts for efficiently important a large data set in the background. I\'m ensuring I\'m only using 1 managed object context at a time in the thread.[详细]

2023-04-04 18:00 分类：问答
What's the Problem with Loading Objects to One Managed Object Context from Multiple Threads?

Ok, so I have multiple threads pull data from the persistent store (SQLite database) into a single NSManagedObjectContext (MOC) instance. I have tested it pretty thoroughly and in the case where opera[详细]

2023-04-04 07:08 分类：问答
does NSManagedObjectContextDidSaveNotification get called for transient property updates?

I can\'t seem to get a clear answer for this: when you change a transient property, and then call save, should the NSManagedObjectContextDidSaveNotification be triggered? In my notification listener,[详细]

2023-04-03 22:21 分类：问答
Does NSFetchedResultsController Observe All Changes to Persistent Store?

My program does work like link below: Update results of NSFetchedResultsController without a new fetch[详细]

2023-04-01 06:39 分类：问答
Core Data: Observing new Entity of certain type

I would like to be notified whenever an entity of a certain type is added (and maybe changed/removed).[详细]

2023-04-01 04:53 分类：问答
CoreData - doubt about when saving

I\'m starting in coreData, and I have a doubt. I have an App that reads data from a server, I parse the data, and get as NSDictionary of Objects.[详细]

2023-03-29 01:43 分类：问答
NSManagedObjectContext save doesn't crash but breaks on objc_exception_throw

I am having the same issue described at this address http://www.cocoabuilder.com/archive/cocoa/288659-iphone-nsmanagedobjectcontext-save-doesn-crash-but-breaks-on-objc-exception-throw.html[详细]

2023-03-27 04:01 分类：问答