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Questions tagged [executefetchrequest]

23 questions
3
votes
1 answer

Fetching child sum from Core Data

Lets say I have three Entitys. Person: name address (to-many-salary) and (to-many-loans) Salary: income tax Rel: (to-one-Person) Bills amount Rel: (to-one-person) How do I perform a fetch that have a result like this: John Doe, SUM>income,…
Vegar Flo
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Core-Data: fetching object count from MOC after saving

Im currently having a problem with my CoreData implementation. I try to query the number of objects with certain properties. I therefore execute the following code NSUInteger itemsCount = [managedObjectContext countForFetchRequest:fetchRequest…
Jan
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swift core data executeFetchRequest always crash with propertiesToGroupBy

i am having a problem with executeFetchRequest when i use propertiesToGroupBy. I need to fetch dates(saved as string) but similar dates should be avoided, so that i get unique date array. below is the code i used var arrDates: NSArray =…
alrarea
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How to perform conditional 'executeFetchRequest' to fetch only those entities where particular attribute is nil?

I want to execute a fetch request where I should get only those entities in result whose particular attributes have a nil value. (say attribute: firstName). So How will I write it in following format ? Everything I have in place, just want to know…
Tejas
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CoreData. Fetchrequest all entities with relations

My main Entity is called Series. Series has a one to many relationship to an entity called Rounds, connected by one-to-many (ordered), and Rounds has again an NSOrderedSet with Shots. The Shots entity has an attribute called score, which is an…
Tom Tallak Solbu
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NSManagedObjectContext? does not have a member named 'executeFetchRequest'

I'm trying to convert my objective-c code: NSArray *objects = [context executeFetchRequest:request error:&error]; to swift: var objects : NSArray = context.executeFetchRequest(request, error: &error) but it doesn't seem to work that way. Any ideas…
user3905950
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Why does the raywenderlich code break if you enable the scheme "-com. apple.CoreData.ConcurrencyDebug 1"

This example shows how to extract data asynchronously using coreData. If you run program without scheme "-com. apple.CoreData.ConcurrencyDebug 1" all work, but if you turn on scheme "-com. apple.CoreData.ConcurrencyDebug 1" we get runtime…
Pogos Anesyan
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SwiftUI CoreData MVVM resolutes in error "EXC_BAD_INSTRUCTION...."

I'm trying to use a ViewModel between the ContentView and Core Data in SwiftUI. Xcode builder runs the App but I get an immediate error: Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) for var recList. Can anyone help? Following a…
schnitz
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How to get the filter data result in core data swift 5, with completion handler

I have created the fetch data method in with completion handler and pass the two parameter search text and fetchOfSet but I did not get the response. I have to also sort the record and filter the records as descending order. func…
Bhavesh Chavda
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Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[OS_xpc_array length]: unrecognized selector sent

Hi i have a function which fetches data from coreData. Here is the method - (NSArray *)fetchRequestWithEntity:(NSEntityDescription *)entity predicate:(NSPredicate *)predicate sort:(NSArray…
iPhoneDeveloper
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Crash on [context executeFetchRequest:request error:&error] always in Core Data?

I run my app so always crash on [context executeFetchRequest:request error:&error] because multiple asynchronous data save in core data. So how to handle this problem? I am trying this code. NSManagedObjectContext *context =[appDelegate…
Mayank Palotra
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Getting crash on FetchRequest in Swift 2.0

I am using CoreData in my application. I created an entity which has two attributes. One is Int type and second one is Transformable Type. I am able to save my record successfully. But when I try to fetch, It get crash. And one more thing,…
Rox
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CoreData NSFetchRequest = nil

I'm new in Swift and I have a problem with a fetch request. The request is nil, so it doesn't show me the data I want. But I do the same before in the UebungenMuskelgruppenTableViewController and it works. Only the requests in the…
Marcel Spindler
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How to retrieve CoreData that satisfies a condition swift 2

I have a DB with fields like below Latitude Longitude Flag 54.1425 98.2564 0 52.1036 94.1458 3 51.1569 92.1458 3 50.1326 91.1458 3 56.1236 93.1458 0 I need to retrieve records that have flag as 3. …
Carey
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ManagedObject attributes are nil after second reloadData

I have value: private var journeysArray : [JourneyInformation]! In viewWillAppear I load data from Core Data: let moc = DataController().managedObjectContext let reqest = NSFetchRequest(entityName: "JourneyInformation") do { …
biloshkurskyi.ss
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