Core data fails to open store: “Error validating url for store”


I've been working on an app for quite a while and suddenly started
to hit this error when the app tries to open a Core Data store. I
hadn't made any changes to my data model or the data access code for
over a month, so I don't think it can be anything that I'm doing wrong
as far as interacting with Core Data. (Meaning, the URLs are ok, the
call pattern is ok, etc...)


Interestingly, these are the
log lines immediately before the error:

/>

/SourceCache/GoogleMobileMaps/GoogleMobileMaps-217.2/googlenav/mac/TileStore.mm:209
unable to open /var/mobile/Library/Caches/MapTiles/MapTiles.sqlitedb:
(14) unable to open database file
/SourceCache/GoogleMo

I've been working on adding in-app purchases and was able to create
and test in-app purchases using Store Kit (yay!). During testing, I
exercised my app in a way which caused the app to crash mid purchase
(so I guess the normal cycle of receiving
paymentQueue:updatedTransactions and calling finishTransaction was
interrupted).


Now I am unable to successfully complete any
transactions and instead am getting only transactions with
transactionState SKPaymentTransactionStateFailed when
paymentQueue:updatedTransactions is called.


The
transaction.error.code is -1003 and the
transaction.error.localizedDescription is "Cannot connect to iTunes
Store"!

Mobile Programming

Is it fine to say that core data "deserializes" objects when
fetching them from an persistent store?

Mobile Programming

If I set this in my environment

/>config.action_controller.cache_store = :mem_cache_store />

ActionController::Base.cache_store will
use a memcached store but Rails.cache will use a memory store
instead:


$ ./script/console
>>
ActionController::Base.cache_store
=>
#<ActiveSupport::Cache::MemCacheStore:0xb6eb4bbc
@data=<MemCache: 1 servers, ns: nil, ro: false>> />>> Rails.cache
=>
#<ActiveSupport::Cache::MemoryStore:0xb78b5e54 @data={}> />

In my app, I use Rails.cache.fetch(key){
object }
to cache objects inside

Programming Languages

I'm having a problem in my application, CoreData works as it should
in he simulator - but not on the device.


I receive an


2010-09-30 12:45:07.500 CoreDataTutorial_iOS[130:307]
Unresolved error Error Domain=NSCocoaErrorDomain Code=513 "The
operation couldn’t be completed. (Cocoa error 513.)"
UserInfo=0x1412a0 {NSUnderlyingException=Error validating url for
store}, {
NSUnderlyingException = "Error validating url for
store";

I'm calling for the
PersistentStoreCoordinator in this function (which throws the error
above):

/>-(NSPersistentStoreCoordinator*)persistentStoreCoordinator />{
Web Design

I've been working on an app for quite a while and suddenly started
to hit this error when the app tries to open a Core Data store. I
hadn't made any changes to my data model or the data access code for
over a month, so I don't think it can be anything that I'm doing wrong
as far as interacting with Core Data. (Meaning, the URLs are ok, the
call pattern is ok, etc...)


Interestingly, these are the
log lines immediately before the error:

/>

/SourceCache/GoogleMobileMaps/GoogleMobileMaps-217.2/googlenav/mac/TileStore.mm:209
unable to open /var/mobile/Library/Caches/MapTiles/MapTiles.sqlitedb:
(14) unable to open database file
/SourceCache/GoogleMo

Mobile Programming

In my iPhone app I'm using Core Data and I've made changes to my
data model that cannot be automatically migrated over (i.e. added new
relationships). I added the data model version (Design -> Data Model
-> Add Model Version) and applied my new data model changes to the new
version 2. I then created a mapping object model and set the Source
and Destination models to their correct data models (old and new
respectively).


When I run the app and call the
persistentStoreCoordinator, my app barfs with the following:

/>

2010-02-27 02:40:30.922 XXXX[73578:20b] Unresolved error Error
Domain=NSCocoaErrorDomain Code=134110 UserInfo=0xfc2240 "Operation
could not b

Web Design

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