nsfetchedresultscontroller

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Core data - FetchedResultController returning complicated data structures?

So I have the following structure.Basically a tree view. Each node has a set (NSSet of nodes), each node is a object that contains an NSD开发者_如何学运维ate.[详细]

2023-04-13 00:38 分类：问答
What's the effect of cache to NSFetchedResultsController

I read the doc of course, but I don\'t quite get the meaning of \"setting up any sections and ordering the contents\".[详细]

2023-04-13 00:34 分类：问答
Core Data creating NSPredicate for NSNumber using something akin to BEGINSWITH

I am trying to retrieve results from search bar text in Core Data on a pro开发者_如何学JAVAperty that is an NSNumber.[详细]

2023-04-12 02:22 分类：问答
When is an NSFetchedResultsController updated?

I am using an NSFetchedResultsController that uses a predicate to fetch some managed objects. I have always assumed that the NSFetchedResultsController is updated when the开发者_StackOverflow中文版 ob[详细]

2023-04-11 23:08 分类：问答
NSSortDescriptor and to-many relationships

I\'m working with an NSFetchedResultsController to show data in a UITableView. I have a to many relationship which looks something like this:[详细]

2023-04-11 01:34 分类：问答
Sorting based on one of many related entities

Entity B (Book) has a one-to-many relationship with the entity D (Description). The idea is that a book has different descriptions for different languages.[详细]

2023-04-09 02:07 分类：问答
NSFetchedResultsController - when are delegate methods fired?

I have a model with a many-to-many relationship between the following entities: Meeting >---< Person[详细]

2023-04-07 10:13 分类：问答
NSFetchedResultsController with relationship not updating

Let\'s say I have two entities, Employee and Department. A department has a to-many relationship with an employee, many employees can be in each department but each employee only belongs to one depart[详细]

2023-04-07 07:15 分类：问答
CoreData: transient property and localizedCaseInsensitiveCompare

In coredata, i have a transient property to use has sections. The transient property code is here: - (NSString *) firstLetter_transient {[详细]

2023-04-06 14:54 分类：问答
NSFetchedResultsController and UITableView animation issue

I\'m having a visual issue while using an NSFetchedResultsController with a UITableView. I\'ve discovered that the iPhoneCoreDataRecipes sample code from Apple exhibits the same problem. I\'m looking[详细]

2023-04-06 02:12 分类：问答