During my Spring Data JPA workshops and talks, I often get asked if a test case should handle transactions, or not. And if it handles the transaction if it should commit it or roll it back. And as so often, the short answer is: it depends. The slightly longer answer is: it depends on the…
When integrating AI into your application, you will most likely want to use a concept called RAG. This acronym stands for Retrieval Augmented Generation and is an absolute game changer. The idea is simple: By providing your own input data to your LLM, you can improve the quality of its response and let it include…
There are various reasons to implement your own primary key representation. Your primary key may consist of multiple attributes. Or you’re following domain-driven design principles and want to use a custom type to add semantic meaning to it. Implementing a record and mapping it as an IdClass seems evident in these situations. A record is efficient, easy to implement, immutable…
The Date and Time API, introduced in Java 8, finally replaced the old java.util.Date. It’s much easier to use and finally offers separate classes representing date, date with time, and only time information. That not only improves your business code but also makes it easier to use them as entity attributes. At least if you’re…
What if I told you that there’s a tool that makes it incredibly easy to process datasets from various sources, analyze them using SQL, and export the result in different formats? And that it doesn’t require all the hassle you know from typical relational databases or a custom implementation. Sounds too good to be true,…