[GitHub] [fineract] vorburger commented on pull request #916: FINERACT-942 Added and Enforced EmptyCatchBlock checkstyle

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vorburger commented on pull request #916:
URL: https://github.com/apache/fineract/pull/916#issuecomment-632006602


   > @vorburger I hope this is the correct approach to deal with empty catch blocks :)
   
   Your job here is going to be a little bit more challenging, thus more interesting! :smiling_imp: 
   
   What you are getting into here is kind of related to what I alluded to in FINERACT-932... there are 2 cases: You're finding a number of obvious plain wrong empty `catch` statements. For example, catching a `javax.mail.MessagingException` is most certainly a clear bug! If your code is trying to send out an email, and that fails, probably your SMTP server is fried, or whatever - and you certainly do want an "operator" who supervises error logs (e.g. like I do on https://www.fineract.dev, using https://cloud.google.com/error-reporting) do know about that. E.g. that `GeneralSecurityException` you spotted most likely also fall into this category.
   
   However, for e.g. `EmptyResultDataAccessException` I'm personally not entirely sure yet. What does that exception signal? Presumably Spring is indicating that some JDBC ResultSet was empty, when it should not have been? Is that OK, or a clear indication of a database corruption? That depends on the specific code... But if it is OK and can happen during "normal" execution, then... there is another problem - then some other Spring API which returns an empty list or an Optional or something like that should have been used instead of expecting an exception! Do you know what I mean?
   
   BTW can you write up what I'm explaining here into a follow-up PR to #912 ? :smile: 


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