Enterprise Java
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JPA Tutorial: Mapping Entities – Part 2
In my last post I showed a simple way of persisting an entity. I explained the default approach that JPA…
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Trace output with Drools
Drools 6 includes a trace output that can help get an idea of what is going on in your system,…
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Jar Hell made Easy – Demystifying the classpath with jHades
Some of the hardest problems a Java Developer will ever have to face are classpath errors: ClassNotFoundException, NoClassDefFoundError, Jar Hell,…
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Java EE 7 with Angular JS – CRUD, REST, Validations – Part 2
This is the promised follow up to the Java EE 7 with Angular JS – Part 1. It took longer…
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Kafka Benchmark on Chronicle Queue
Overview I was recently asked to compare the performance of Kafka with Chronicle Queue. No two products are exactly alike,…
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How to connect to MongoDB from a Java EE stateless application
In this post I will present how to connect to MongoDB from a stateless Java EE application, to take advantage…
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Akka Notes – Actor Logging and Testing
In the first two parts (one, two), we briefly talked about Actors and how messaging works. In this part, let’s…
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Neo4j: COLLECTing multiple values
One of my favourite functions in Neo4j’s cypher query language is COLLECT which allows us to group items into an…
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Spring WebApplicationInitializer and ApplicationContextInitializer confusion
These are two concepts that I mix up occasionally – a WebApplicationInitializer and an ApplicationContextInitializer, and wanted to describe each…
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