I'm really stuck here with upgrade testing from v1 to v2 of an iPhone application. I have IPA releases that I'm testing via ad hoc distribution via iTunes to my iPhone device, one for v1 of the app and one for v2. Note that:
- v1 installs runs fine on my device
- if I delete v1 and deploy v2 (so no migration) then it works fine
- when I deploy v2 whilst v1 is already there I get the error: "reason=Can't find model for source store"
A snippet from the error...*
reason=**Can't find model for source store**}, {
URL = "file://localhost/var/mobile/Applications/AAAAF424-D6ED-40FE-AB8D-66879386739D/Documents/MyApp.sqlite";
metadata = {
NSPersistenceFrameworkVersion = 320;
<cut>
- when I use "phone disk" to look at my device I see there is Documents/MyApp.sqlite file
Question - Any ideas how to resolve this? What debugging/analysis could I do here? Let me know if you need any more info.
What I have done as an overview is:
- Deployed my v1 app to the AppStore without setting up a version for my core data model (i.e. wasn't really aware at the time of versions, so didn't set one up)
- The only additional change for v2 was one new attribute on the one model
- So for the v2 release what I've done is:
- Recreated a new Core Data Model
- Created a v1 version for the model
- Created the object/attributes for v1
- Saved
- Created a v2 version for the model
- Created the one additional attribute
- Saved
- Recreated the managed object classes
- Updated the code to put the options in per http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreDataVersioning/Articles/vmLightweight.html#//apple_ref/doc/uid/TP40008426-SW1 when calling addPersistentStoreWithType
PS fuller version of error if this helps - this time it comes from simulating the migration error on the simulator
, reason=Can't find model for source store}, {
URL = "file://localhost/Users/greg/Library/Application%20Support/iPhone%20Simulator/4.3.2/Applications/69FDFDCF-631D-4191-B852-CD75151B1EA9/Documents/MyApp.sqlite";
metadata = {
NSPersistenceFrameworkVersion = 320;
NSStoreModelVersionHashes = {
Config = <5f92f988 71e11a66 554ae924 61887562 22b8de8a c318b110 e3e4a569 81adafa2>;
};
NSStoreModelVersionHashesVersion = 3;
NSStoreModelVersionIdentifiers = (
""
);
NSStoreType = SQLite;
NSStoreUUID = "3B9832DA-E3A1-431B-83E8-43431A7F3452";
};
reason = "Can't find model for source store";
}
PSS. If this helps the contents of the core data model *.mom directory/package for each version archieve are:
v1
-rw-r--r-- 1 greg staff 1664 5 Sep 21:06 MyApp.mom
-rw-r--r-- 1 greg staff 2656 5 Sep 21:06 MyApp.omo
-rw-r--r-- 1 greg staff 480 5 Sep 21:06 VersionInfo.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd>">
<plist version="1.0">
<dict>
<key>NSManagedObjectModel_CurrentVersionName</key>
<string>MyApp</string>
<key>NSManagedObjectModel_VersionHashes</key>
<dict>
<key>MyApp</key>
<dict>
<key>Config</key>
<data>
X5L5iHHhGmZVSukkYYh1YiK43orDGLEQ4+SlaYGtr6I=
</data>
</dict></dict></dict>
</plist>
v2
-rw-r--r-- 1 greg staff 497 2 Oct 12:47 MyApp 1.mom
-rw-r--r-- 1 greg staff 1601 2 Oct 12:47 MyApp 2.mom
-rw-r--r-- 1 greg staff 1695 2 Oct 12:47 MyApp.mom
-rw-r--r-- 1 greg staff 2920 2 Oct 12:47 MyApp.omo
-rw-r--r-- 1 greg staff 665 2 Oct 12:47 VersionInfo.plist
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd>">
<plist version="1.0">
<dict>
<key>NSManagedObjectModel_CurrentVersionName</key>
<string>MyApp</string>
<key>NSManagedObjectModel_VersionHashes</key>
<dict>
<key>MyApp</key>
<dict>
<key>Config</key>
<data>
Z/n8092QBHPfBwInZvIm1lei53T1UtZhpNzjl3JA0gs=
</data>
</dict>
<key>MyApp 1</key>
<dict/>
<key>MyApp 2</key>
<dict>
<key>Config</key>
<data>
Fih24clI+kZszFd3X6Gm8itq8YDxudiKnjHW8ydNmps=
</data>
</dict></dict></dict>
</plist>
EDIT: Another question that is not clear to me, as raised by reviewing the link jrturton provided below is:
- How does one now in the latest XCode version do the "Set Current Version" to the appropriate model version file? i.e. the previous posts highlights two different steps being one Adding Model Version, but then separately "Set Current Version"
- How is one supposed to use the Core Data Model "identifier" field which one can set for each of the core data model files. It's in the inspector. The parameter exists against for example the MyApp 1.xcdatamodel, MyApp 2.xcdatamodel, and MyApp.xcdatamodel files, so what do you need to put in each one here?
