About Lukas Eder

Lukas is a Java and SQL enthusiast developer. He created the Data Geekery GmbH. He is the creator of jOOQ, a comprehensive SQL library for Java, and he is blogging mostly about these three topics: Java, SQL and jOOQ.

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When Source Code Comments Indicate Trouble

Developers have their own, cynical kind of humour. Consider, for instance, Geek and Poke’s view on how to insult a developer. But there’s a better humour than posting stuff on a ...
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Top 10 Ceylon Language Features I Wish We Had In Java

What does one do when Hibernate is “finished” and feature complete and one needs new challenges? Right. One creates a new JVM language called Ceylon. On November 12, 2013, Ceylon ...
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A Lesser-Known Java 8 Feature: Generalized Target-Type Inference

Going through the list of Java 8 features, Generalized Target-Type Inference struck me as a particularly interesting, lesser-known gem. It looks as though the Java language designers ...
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Deep Stack Traces Can be a Sign for Good Code Quality

The term “leaky abstractions” has been around for a while. Coining it is most often attributed to Joel Spolsky, who wrote this often-cited article about it. I’ve now stumbled ...
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Oracle GlassFish, or Why You Should Think About Open Source Again

Oracle’s recent announcement about the discontinuation of commercial services for JEE’s reference implementation GlassFish has caused many reactions in the community involved with ...
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ID Lists Aren’t the Best Solution for the N+1 Problem

In their eternal attempts to circumvent the N+1 problem, Hibernate users often resort to IN predicates with ID lists. In this post, we’ll see how those users might just be replacing ...
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The Code That Made me Cry

A friend of mine recently told me about the kind of problems he’s currently struggling with in the legacy application he’s maintaining. Here’s a sample piece of code to illustrate ...
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Top 10 Lists of Common Java Mistakes (That Makes Top 100!)

Top 10 lists are very popular, fun, and informative to read. But there are so many of them! How to choose the right one? Here’s a meta top 10 list helping you find the top 10 top ...
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Does Java 8 Still Need LINQ? Or is it Better than LINQ?

LINQ was one of the best things that happened to the .NET software engineering ecosystem in a long time. With its introduction of lambda expressions and monads in Visual Studio 2008, ...
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Why Staying in Control of Your SQL is so Important

Lots of blog posts and research papers are written about the topics of scaling up and scaling out. This interesting blog post, for instance, sheds some light on the two strategies with ...
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