Have startup code delete the local cache if the cache cannot be opened...

Have startup code delete the local cache if the cache cannot be opened anymore. This is usually because of a change to the DB model during development.

SVN: 27455

openbis-ipad/openBIS/openBIS/CISDOBAppDelegate.m

@@ -135,6 +135,7 @@
     if (_serviceManager) return _serviceManager;
     
     NSURL *storeUrl = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"openBISData.sqlite"];
+    
     NSURL *openbisUrl = [self openbisUrl];
     
     NSError *error;
@@ -143,9 +144,17 @@
             initWithStoreUrl: storeUrl openbisUrl: openbisUrl trusted: YES error: &error];
     
     if (!_serviceManager) {
-        // TODO Implement error handling
-        NSLog(@"Unresolved error -- could not create service manager %@, %@", error, [error userInfo]);
-        abort();
+        // We couldn't open the store, probably because we changed the database model. Remove the old cache and create the service manager again.
+        [[NSFileManager defaultManager] removeItemAtURL: storeUrl error: nil];
+        
+        _serviceManager =
+            [[CISDOBIpadServiceManager alloc]
+                initWithStoreUrl: storeUrl openbisUrl: openbisUrl trusted: YES error: &error];
+        if (_serviceManager) {        
+            // TODO Implement error handling
+            NSLog(@"Unresolved error -- could not create service manager %@, %@", error, [error userInfo]);
+            abort();
+        }
     }
     
     return _serviceManager;