I was trying to understand how this was so much efficient and how did he manage to generate this will so little code. Where was his query retrievals ? Where did those classes magically appear. How did he retrieve the data so fast.

Then i read the first line, he is the CTO of Speedment.

So he had to add maven dependency to his project generate ton of code, to create his objects, retrieve all them and do the computation in the Speedment optimized functions.

So with his goal to use as less code as possible, he had to add third party library that added tons of code that he did not count in the lines of code that was written.

Seems a bit like self promotion and unfair to be honest.