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How to replace a build module with Veripacks

Compare the two trees below. In both cases the goal is to have an application with two independent modules (frontend and reporting), and one shared/common module (domain). The code ...
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Drools Planner renames to OptaPlanner: Announcing www.optaplanner.org

We’re proud to announce the rename Drools Planner to OptaPlanner starting with version 6.0.0.Beta1. We’re also happy to unveil its new website: www.optaplanner.org. OptaPlanner ...
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JPA and CMT – Why Catching Persistence Exception is Not Enough?

Being in EJB and JPA world using CMT (Container Managed Transactions) is very comfortable. Just define few annotations to demarcate transaction boundary (or use the defaults) and that’s ...
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Hadoop Books Giveaway – Roundup

Fellow geeks, Our giveaway of Packt Publishing’s books on Apache Hadoop has ended. You may find the original post for the competition here. The Prize Winners The 6 lucky winners that ...
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Types of Entity Managers: Application-managed EntityManager

JPA specification defines few types of EntityManagers / Persistence Contexts. We can have:extended and transactional-scoped EntityManagers, container-managed or application-managed ...
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Gang of Four Patterns With Type-Classes and Implicits in Scala (Part 2)

Type-classes are a powerful tool for library creators and maintainers. They reduce boilerplate, open libraries to extension, and act as a compile time switch. Similarly, the GoF patterns ...
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EJB Inheritance is Different From Java Inheritance

Despite the fact that EJB inheritance sometimes uses Java inheritance — they’re not always the same. Just as you could read in my previous post, EJB doesn’t have to implement ...
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ARM Virtualization Extensions – Memory and Interrupts (Part 2)

In the first part of this series, I introduced the topic of virtualization. Today I will venture deeper into the ARM virtualization extensions for memory management and handling of ...
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Promises and futures in Clojure

Clojure, being designed for concurrency is a natural fit for our Back to the Future series. Moreover futures are supported out-of-the-box in Clojure. Last but not least, Clojure is ...
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Defining EJB 3.1 Views (Local, Remote, No-Interface)

This post will talk about possible ways of defining EJB views using annotations (I’ll just mention about using EJB Deployment Descriptor at the end.) I’ll focus on the most current ...
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