ByThorben JanssenThis is the second part of my SQL result set mappings series. We had a look at some basic result type mappings in the first post Result Set Mapping: The Basics. In this one, we will define more complex mappings that can map a query result to multiple entities and handle additional columns that cannot be mapped to…
ByThorben JanssenQuite often JPQL is not powerful enough to perform the queries we need in real world projects. In general, this is not an issue because JPA is designed as a leaky abstraction and we can use the full potential of SQL by using native queries or calling stored procedures. The only downside is, that these…
ByThorben JanssenNormally, I am using the Java Weekly series to collect the most interesting Java related links. But today I prepared a special April Fool Edition for you. I hope you enjoy it.
ByThorben JanssenLast week, I attended the JavaLand 2015 conference in Brühl, Germany. If you follow me on twitter, you have probably seen me tweeting about it. And what shall I say, it was a great conference! Well organized, lots of interesting sessions, great discussions and everything happening in a theme park. Yes, that’s right: it took…
ByThorben JanssenDid you ever ask yourself why a server request took ages on the production system while your local test system was just fine?Well, we all had these situations, and we will have several more of them in the future. In my experience, strange performance drops are often related to slow database queries. But which query…