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JBoss AS 7.0.2 “Arc” released – Playing with bind options

More good news on the JBoss AS7 front. JBoss AS 7.0.2.Final “Arc” has been released! It’s been one month since AS 7.0.1 was released. Within this short period of time there have been numerous bugs fixed and more ...
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JBoss Modules Example – Modular Web Application

Recently I read Why there is no standard for developing real modular web applications? by Patroklos Papapetrou (also featured in Java Code Geeks). Inspired by this article I decided to check JBoss Modules in action. This post desc ...
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Swapping out Spring Bean Configuration at Runtime

Most Java developers these days deal with Spring on a regular basis and there are lots of us out there that have become familiar with its abilities as well as its limitations. I recently came across a problem that I hadn’t hit b ...
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Practical Introduction into Code Injection with AspectJ, Javassist, and Java Proxy

The ability to inject pieces of code into compiled classes and methods, either statically or at runtime, may be of immense help. This applies especially to troubleshooting problems in third-party libraries without source codes or ...
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Configuration Management in Java EE

Configuration Management has a lot of relevance in Cloud Computing as I tried to argue earlier. Actually, I would boldly claim that Configuration Management is a corner stone in any serious attempt to squeeze a few dollars out of ...
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Simple Twitter: Play Framework, AJAX, CRUD on Heroku

So the big announcement is out – Heroku started offering native support to Play Framework applications! If you haven’t heard it, checkout the post from Jesper Joergensen on Heroku’s blog. So for the presentation, I am se ...
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Spring Declarative Transactions Example

A transaction is a unit of work that has ACID (atomic, consistent, isolated and durable) properties. Atomic means that the changes all happen or nothing happens. If money is debited from an account and credited to another account, ...
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Real modular web applications: Why there is no standard for developing them?

OSGI, SpringSource, Jboss Modules, J2EE and the list never ends.All these technologies promise to their end users/developers the same thing which is more or less java modular web applications (?). How many of us out there, though, ...
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On DTOs

DTOs, or data-transfer objects, are commonly used. What is not s? commonly-known is that they originate from DDD (Domain-driven design). There it makes a lot of sense – domain objects have state, identity and business logic whil ...
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On domain-driven design, anemic domain models, code generation, dependency injection and more…

Eric Evans has formulated what domain-driven design (DDD) is. Martin Fowler is a great supporter and advocate of DDD. These are remarkable names and it is almost certain they are supporting something worth. And I’m not here to a ...
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