How can you get the SQLite result code when executing the Data.execute. For example, I want to handle SQLite errors so the Smartface app does not fail.
You cannot see the SQLite result but if you have a syntax error in your sql statement(for example forgetting a comma, etc), Smartface will warn you about your error.
Related
I am trying to create a Custom QGIS plugin where i connect the Db and execute the queries from a selected file. what I need is to display the usual error message which gets displayed in the DB while any error is raised during the connection and execution.
Please let me know any ways to get the traceback message and display it plugin, I have also referred to the scripts of the DB manager plugin also. but it seems difficult for me to get exactly how they did it.
From this link, try this one:
try:
#your code here
except QgsProviderConnectionException as e:
raise DbError(e)
I'm creating on my own a to-do app using Flutter. When I compile and try to insert a data in sqlite database, I got this error Flutter Sqlite Exception,No such table task, SQL logic Error.
Note: I use moor_ffi, moor
,and generate the database.g.dart file using command flutter packages pub run build_runner build.
From moor documentation:
Why am I getting no such table errors?
If you add another table after your app has already been installed,
you need to write a migration that covers creating that table. If
you’re in the process of developing your app and want to use un- and
reinstall your app instead of writing migrations, that’s fine too.
Please note that your apps data might be backed up on Android, so
manually deleting your app’s data instead of a reinstall is necessary
on some devices.
So everytime you have modified your database, you need to re-install your app or increase the schema version in your database.
#override
int get schemaVersion => 2;
I have a simple iphone/ipad application... but now, mysteriously, when i touch on any textfield (in UIWebView or in UIView, it's the same), the log console give me this error:
2011-01-08 20:47:17.242 App_tab[298:207] sqlite3_prepare 'SELECT name, size, width, height, bpr, format FROM store WHERE key=?' failed: 'no such table: store' (1)
2011-01-08 20:47:17.474 App_tab[298:207] sqlite3_prepare 'INSERT INTO store VALUES (?,?,?,?,?,?,?,?)' failed: 'no such table: store' (1)
2011-01-08 20:47:17.475 App_tab[298:207] '(null)' no such table: store (21)
the app continue work, but i have a lot of these errors...
Please note that:
don't have any sql database
don't have any sql framework
don't save data on disk.
This problem come from today and i don't know a method to solve it!
EDIT: Ah, it appears in all projects that i open with my xcode!
Any idea?
It's very strange and i don't able to debug...
thanks,
alberto.
Reset the simulator in the simulator menu.
I think you select the "Core data" option when creating the project, I suggest review the code that initializes the core data infrastructures in you application delegate, hope this fixes the error.
I'm able to complete my iphone app using core data internally.
But for the first time when I'm running in simulator or on device its crashing with following error:
2010-03-18 10:55:41.785 CrData[1605:4603] Unresolved error Error Domain=NSCocoaErrorDomain Code=513 UserInfo=0x50448d0 "Operation could not be completed. (Cocoa error 513.)", {
NSUnderlyingException = Error validating url for store;
}
When I run the app again in simulator or on device, its running perfectly. I'm not able to identify the exact problem. Can some one guide me on how to proceed further???
You need to unroll the errors and see what is going on. Inside of that error (which you can set a break point on objc_exception_thrown to catch it) is the userInfo dictionary which you can interrogate to see what the underlying errors are.
update
What does your NSPersistentStoreCoordinator creation code look like?
Did you add a break point and do a po [error userInfo] so see if there were any additional errors in the userInfo?
Core Data can and does send you a hierarchy of errors and frequently on a small amount of information is exposed at the top error. Unrolling the errors via the debugger is best to determine the underlying causes.
update
Code error 513 means, write permissions for creating store in core data app failed. But the same piece of code is running well from next time. So, what might be the actual problem is not known to me..... how to proceed here.
Again, what does your persistent store creation code look like? You need to post some code so that I can take a look at it. Otherwise I am just guessing which is no fun.
8.2 has become more strict on the location (and permissions) of your persistent store. I've just seen the "513" error appear when the database was stored in the bundle and used with a read only option. Using a device with 8.1 it worked without failing, but on 8.2 the error and exception appeared causing a crash. On the simulator the exception did not occur and happily continued to work.
The solution that worked to copy the database into the application documents directory at start up.
NSFileManager copyItemAtURL:toURL:error will come in useful.
I am using SQL lite database in my iPhone app. I have a refresh button on my Home screen and upon click of then refresh button I parse data from my web service and store the results into a SQL lite database. When I click on refresh button repeatedly I get an error. The error occurs after a variable number of clicks/refreshes each time. The error is:
Failed to load debugging library at:
/Developer/Applications/Xcode.app/Contents/PlugIns/GDBMIDebugging.xcplugin/Contents/Resources/PBGDBIntrospectionSupport.A.dylib
Custom data formatters are disabled.
Error message was: 0xe00805 "dlopen(/Developer/Applications/Xcode.app/Contents/PlugIns/GDBMIDebugging.xcplugin/Contents/Resources/PBGDBIntrospectionSupport.A.dylib, 10): image not found"`
After this error, my app crashes and when I logged the error it gives me an error "Unable to open database"
Please help me to resolve this error.
Thanks
Sandy
It would appear that the debugger is having a problem loading the data formatters that create the displays for various datatypes in the debugger window's variable display panel. If you've added any customer formatters, you should remove them.
Try running the program without the debugger and see if you get a crash. If so, the problem is in the app. If not, it's most likely in Xcode itself. I would test a dummy project and see if you get the same error.
It's possible there is hellish recursion somewhere in your code. I have seen that bring the debugger down but not with this error message.