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How to customize Hibernate dirty checking mechanism

Introduction In my previous article I described the Hibernate automatic dirty checking mechanism. While you should always prefer it, there might be times when you want to add your own ...
java-interview-questions-answers

EJB 3.x : Lifecycle and Concurrency models (part 2)

This is the second post of the two part series. The first part covered the life cycle and the concurrency behavior of Stateful and Stateless EJBs. I’ll cover Singleton EJBs in ...
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OptaPlanner – Vehicle routing with real road distances

In the real world, vehicles in a Vehicle Routing Problem (VRP) have to follow the roads: they can’t travel in a straight line from customer to customer. Most VRP research papers and ...
java-interview-questions-answers

Really Dynamic Declarative Components

In this short post I am going to focus on ADF dynamic declarative components. I mean a well known ADF tag af:declarativeComponent. It can be used as a pretty convenient way to design ...
java-interview-questions-answers

Instant Big Data Stream Processing = Instant Storm

Every 6 months at Canonical, the company behind Ubuntu, I work on something technical to test our tools first hand and to show others new ideas. This time around I created an Instant ...
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Pluggable Knowledge with Custom Assemblers, Weavers and Runtimes

As part of the Bayesian work I’ve refactored much of Kie to have clean extension points. I wanted to make sure that all the working parts for a Bayesian system could be done, ...
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Bootstrapping Apache Camel in Java EE7 with WildFly 8

Since Camel version 2.10 there is support for CDI (JSR-299) and DI (JSR-330). This offers new opportunities to develop and deploy Apache Camel projects in Java EE  containers but also ...
java-interview-questions-answers

Everything Developers Need To Know About xPaaS

I’ve been reading a lot about Red Hat products lately and being interested in cloud and such since some years now, it’s pretty obvious for me to look into the cloud offerings ...
spring-interview-questions-answers

Secure REST services using Spring Security

Overview Recently, I was working on a project which uses a REST services layer to communicate with the client application (GWT application). So I have spent a lot of to time to figure ...
java-interview-questions-answers

Analysing the performance degradation/improvements of a Java EE application with interceptors

When you are developing a Java EE application with certain performance requirements, you have to verify that these requirements are fulfilled before each release. An Hudson job that ...
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