Databases
StackOverflow2013
Postsdbo
PONSPersistentStoreCoordinator not created on a UIManagedDocument
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
    primarykey
    data
    text
    <p>I'm starting to learn about <code>UIManagedDocument</code> and its abilities. From what I understand of it its a form of database stored in a location in the documents directory.</p> <p>Anyway, I'm trying to use it as a database, by storing data within its <code>NSManagedObjectContext</code> however, after a few seconds of creating the <code>UIManagedDocument</code> and saving data to its context (after I'm guessing timing out), the app crashes and it tells me there is no persistent store coordinator.</p> <p>There doesn't seem to be much guidance on the Apple docs as to how to create a persistent store coordinator after creating the managed document.</p> <p>How do I do this exactly?</p> <p>Thanks!</p> <p><em><strong>Edit</em></strong></p> <p>Code I'm using:</p> <pre><code>NSURL *url = [[self iCloudDocumentsURL] URLByAppendingPathComponent:nameOfDocument]; NSMutableArray *books = [self.books mutableCopy]; [books addObject:url]; [self setBooks:books]; UIManagedDocument *document = [[UIManagedDocument alloc] initWithFileURL:url]; NSDictionary *options = @{ NSMigratePersistentStoresAutomaticallyOption : @YES, NSInferMappingModelAutomaticallyOption : @YES, NSPersistentStoreUbiquitousContentNameKey : document.fileURL.lastPathComponent, NSPersistentStoreUbiquitousContentURLKey : [self iCloudCoreDataLogFilesURL] }; [document setPersistentStoreOptions:options]; if (document.documentState == UIDocumentStateClosed) { [document openWithCompletionHandler:^(BOOL success) { Book *book = [Book newBookWithTitle:bookTitle inManagedObjectContext:document.managedObjectContext]; [document updateChangeCount:UIDocumentChangeDone]; }]; } </code></pre> <p><em><strong>Update</em></strong></p> <p>After performing this code on a background thread. My app still logs 'NO' for the success on the completion handler after opening the document. However, my app does not crash, instead I get the following log:</p> <pre><code>2013-04-23 00:01:08.381 Notable[193:4b0b] -[_PFUbiquityRecordsImporter rollResponseOperation:encounteredAnError:whileTryingToAdoptBaseline:](1545): CoreData: Ubiquity: &lt;PFUbiquityBaselineRollResponseOperation: 0x1fa561d0&gt; localPeerID: mobile.2DDB96C5-A317-5BE5-8F29-9F5E6681A27A, storeName: A-B893A0AB-B764-42F1-9402-38790DCEF96B, modelVersionHash: NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas= ubiquityRootLocation: &lt;PFUbiquityLocation: 0x1e59b790&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs Encountered an error while trying to respond to the roll of baseline: &lt;PFUbiquityBaseline: 0x1e54deb0&gt;(0) permanentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip safeLocation: &lt;PFUbiquityLocation: 0x1f8eb1b0&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/mobile.2DDB96C5-A317-5BE5-8F29-9F5E6681A27A currentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip storeName: A-B893A0AB-B764-42F1-9402-38790DCEF96B modelVersionHash: NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas= baselineArchiveLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip Error: Error Domain=NSCocoaErrorDomain Code=134310 "The operation couldn’t be completed. (Cocoa error 134310.)" UserInfo=0x1f8d2ae0 {baseline=&lt;PFUbiquityBaseline: 0x1e54deb0&gt;(0) permanentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip safeLocation: &lt;PFUbiquityLocation: 0x1f8eb1b0&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/mobile.2DDB96C5-A317-5BE5-8F29-9F5E6681A27A currentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip storeName: A-B893A0AB-B764-42F1-9402-38790DCEF96B modelVersionHash: NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas= baselineArchiveLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip , localStoreKV=&lt;PFUbiquityKnowledgeVector: 0x1f8220c0&gt; ()} userInfo: { baseline = "&lt;PFUbiquityBaseline: 0x1e54deb0&gt;(0)\n\tpermanentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip\n\tsafeLocation: &lt;PFUbiquityLocation: 0x1f8eb1b0&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/mobile.2DDB96C5-A317-5BE5-8F29-9F5E6681A27A\n\tcurrentLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip\n\n\tstoreName: A-B893A0AB-B764-42F1-9402-38790DCEF96B\n\tmodelVersionHash: NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=\n\tbaselineArchiveLocation: &lt;PFUbiquityLocation: 0x1f8e7120&gt;: /private/var/mobile/Library/Mobile Documents/my~app~identifier/Logs/.baseline/A-B893A0AB-B764-42F1-9402-38790DCEF96B/NK3BysbustJxxyi2O8bX8eof15YimkUnegxqX6HDkas=/baseline.zip\n"; localStoreKV = "&lt;PFUbiquityKnowledgeVector: 0x1f8220c0&gt; ()"; } </code></pre> <p>This method also creates a 'DocumentMetaData.plist' (which I believe is necessary according to this files mention in the CS193P video I mentioned in a comment) instead of a file entitled 'persistentStore'.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAdam Carter
    1. USAdam Carter
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
      1. USHal Mueller
      1. VTFavorite
    1. COAs a general note about Core Data, if you think of it as a database you will suffer in the long run. Core Data is a persistance framework NOT a database. It will act like a database to an extent but there are subtle differences that will bite you in the rear if you approach it from the Core Data == database mindset.
      singulars
      1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
      1. UStheMikeSwan
    2. COYeah, I realise Core Data is not a database, (as I said above) it was just easier for me to think of UIManagedDocument as a database (for the application I'm creating anyway).
      singulars
      1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
      1. USAdam Carter
    3. CONo worries, just wanted to keep you from going down a path I've seen many others go down and then hate life down the road.
      singulars
      1. PONSPersistentStoreCoordinator not created on a UIManagedDocument
      1. UStheMikeSwan
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload