A Working DeltaSpike Tutorial

On a recent project, I was faced with an interesting problem: take a service method that was given a single…

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Pre Java EE 7 alternative to JPA 2.1 unsynchronized persistence context

Unsynchronized persistence context in Java EE 7 JPA 2.1 introduced the concept of unsynchronized persistence context which allows fine grained…

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JPA in case of asynchronous processing

Few years ago in Java world it was almost obvious that every “enterprise” class project needed JPA to communicate with…

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Integrating JPA Hibernate with OptaPlanner

We’ve been improving the integration of OptaPlanner with the rest of JEE, so it’s easier to build end user applications…

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WebSocket Client API in Java EE 7

In this post, let’s explore the less talked about Web Socket Client API and how to leverage it within a…

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Using JPA And CDI Beans With Camel on WildFly

I didn’t really plan for it, but with a conference free month, I had the chance to dig around a…

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How To Stream/Serialize JPA Result As JAX-RS Response For Large Data

There are times that retrieving a large data set through JPA is necessary (e.g. more than 1,000,000 records) and having…

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Custom Boolean User Type with Hibernate JPA

The ANSI SQL 1999 standard introduced a BOOLEAN data type (although unfortunately only as an optional feature). But to date…

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Type Safe Queries for JPA’s Native Query API

When you’re using JPA – sometimes – JPQL won’t do the trick and you’ll have to resort to native SQL.…

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