Error handling

[westguard]

If an error happens with the get_data_ids or get_row_count methods, perhaps there could be a generic error exception class (similar to DataSourceNotFoundException or DataNotFoundException) that can be thrown? I'm thinking if a data source relies on a third party classes, if they throw an exception we should be able to catch those. Perhaps a different solution might be for the API to be able to catch regular exceptions too, for example those thrown by: throw new \Exception( 'Error message' );

If we should be using DataNotFoundException for generic errors, let me know.

Also, the API seems to be returning a JSON packet if a DataSourceNotFoundException or DataNotFoundException exception is thrown, but there is currently nothing indicating that an error has occurred on the client-side. Perhaps an error notification should be shown?

[doekenorg]

@westguard for generic errors there is a DataViewException available for now. But indeed error handling should still be added in multiple places. 👍