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0 pointsZenoArrow9y ago0 comments

Thank you for recommending jOOQ. I find many ORMs seem unnecessarily complicated compared to raw SQL (with a few exceptions), nice to find another one that offers readable code. Is the performance generally decent too?

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3 comments · 1 top-level

matwood9y ago· 2 in thread

The performance with jOOQ is great. I find it on par with raw SQL. It also has quite a few advanced ways to map the results that can take more complex queries and map them into usable data easily. The main jOOQ programmer really knows databases and has a very informative blog.

My only complaint (and it's a minor one that would be hard to get around) is the need to run a code generator for jOOQ after every schema change.

antoaravinth9y ago

Just a noob question on jooq. How do you construct error message which you use to send back to user on SQL exceptions. Like in case of duplicate item, you send back "User already exists". How your handling it? I know jooq just sends DataAccessException, now the question is how your converting that exception to a meaningful message which needs to be sent to say UI?

lukaseder9y ago

That's a really interesting question, and the best answer is: You have to write this manually. The SQL/JDBC/jOOQ layer can only generate system exceptions, like a constraint violation exception in this case. But there are many different types of constraints, and many different things that a constraint violation can mean. Only you and your service layer can possibly know how to translate such a violation to a meaningful (localised?) user error message.

Having said so, you could hook in an ExecuteListener into jOOQ to handle errors in a single location: https://www.jooq.org/javadoc/latest/org/jooq/ExecuteListener...

An example that uses the Spring Exception translator: https://github.com/jOOQ/jOOQ/blob/master/jOOQ-examples/jOOQ-...

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