About

Personal Photo Location :
Cleveland,OH,USA

Available for work :
August

Origins :
Manchester, UK

Contact Me

I've been developing software for over 15 years working in Delphi and now Java. This site is a home for my open source projects, writings, articles and tutorials mainly focusing on Java and Java EE.

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Archives

By Andy Gibson • March 28th, 2011 • in Articles 5 Comments

In the last few weeks I have been rather busy working on a new project with Rick Hightower, who is fairly well known for his training and writings on Spring and JSF, and Rob WIlliams who is a blogger known as much for meddling in new technologies (and getting mad at them) as he is for intertwining various historical and literary references in his posts. The result of this is the CDISource project which aims to advocate and facilitate the use of the JSR 299 – Java Contexts and Dependency Injection framework across the Java landscape.

If you’ve seen my posts or my site before, you’ll no doubt be aware that I have written at great length about Java EE 6, JSF, CDI , EJB and so on. What I haven’t written about is the many frustrations I’ve come up against in dealing with these frameworks on their own and especially when combined, or how their usefulness is often constrained to the application server container.

Java EE in some ways is an archipelago of frameworks that lacks the cohesiveness and all in one wide screen vision that software developers need. Java EE is about the enterprise, in reality its about the web, or even more specifically about Java EE containers. There’s a whole slew of uses for a good type safe and flexible dependency injection and AOP framework and such as CDI outside of Java EE containers but there is very little information and code to make it actually work.

Our goal is to make CDI useful and usable on its own without Java EE 6, and to give developers the tools and information to do so. To let them write vendor neutral and portable code, and apply agile and best practices. Developers know how to write good software and don’t want to sacrifice that for the sake of using a framework to make things easier. To that end we aim to provide code and information that will help facilitate those practices.

There will be some learning for ourselves along the way and we will have to change some of our previously held concepts. I know over the last few weeks having been getting CDI working and useful outside of the web container it has really altered my perspective on how I think about the dependencies and structure in CDI applications. My perspective has changed even more than when I wrote A Little Less Conversation.

As much as I hate to say it, we did come up with a mission statement, although we found it fairly easy and enjoyable to clearly defined the goals and attitudes of the project.

Our mission is to :

  • Promote and facilitate the use of the Java Context and Dependency Injection (CDI) framework in relation to as many aspects of application development as possible.
  • Enable developers to take advantage of CDI independently of Java EE.
  • Provide lightweight, lean and agile access to the underlying CDI container as a core principle in our efforts.
  • Make testing easy without requiring a complex set of tools or complex deployment scenarios.
  • Enhance both Java EE development as well as the use of CDI in non Java EE application where possible.
  • Promote and enable the use of CDI in a vendor neutral environment and maximize the portability of application code across CDI implementations.
  • Not reject the ideas of Java EE but expand the usability of CDI outside the borders of Java EE application servers with frameworks that are not a part of the specification.
  • Not reject other CDI efforts but to provide another venue to promote those efforts. This is an addition. This is another voice in support of CDI.

We are pretty excited that so far we have been able to live up to the intent of our mission statement with everything we’ve done so far. Over the next few days and weeks you will see articles and tutorials come out of Rick, Rob and I as we write about the CDISource project and we start to showcase some of the code we have written and start giving you an idea of where we are heading.

Right now we have vendor neutral support for starting up CDI outside of the web container and also for testing CDI beans with minimal configuration and intrusion on your test cases. We also have a few other pieces that are nearly ready, as well as dozens of ideas to get started on.

You can start by looking at Ricks brand new introduction of CDI over on JavaLobby.

There was a thread on the JSF LinkedIn group about JSF performance and a number of people complained about the fact that as part of the restore view phase, JSF reconstructs the component tree including binding data to data tables causing unnecessary fetches of data from the database. This article looks at one way of avoiding the additional work to fetch the data.
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By Andy Gibson • February 2nd, 2011 • in Articles 5 Comments

One thing that I wrote that I haven’t really gotten around to examining and verifying in closer detail and validating my position on is the production of the conversational entity manager in the Knappsack archetypes. This article looks at this and re-evaluates my thinking on the use of conversational contexts in CDI.
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If anyone is looking for a good experienced Java, JSF developer in Pittsburgh PA, get in touch. I can be reached through my contact form which goes straight to my email.

In part 1, we created a simple application that made use of string resource bundles in JSF and in part 2 we extended it by using CDI to inject the resource provider into beans so we can re-use our code for accessing locale specific string based resources.
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In this post we looked at adding String resource bundles to our JSF applications to move our string constants into external resources that we can define for different locales. Now I want to extend that example to show how you can expand on that by using injection to access those resources.
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Setting up resource message bundles in JSF to provide multilingal messages and captions is often overlooked when first creating an application. Leaving it till later in the project means you will have to go back and manually change the constants over to resource based values. Resource bundles JSF 1.2 were far from perfect but fortunately, using resource bundles in JSF 2.0 is very easy and this tutorial will show you how to add bundles and use them in your JSF 2.0 pages.
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By Andy Gibson • September 21st, 2010 • in Tutorials 2 Comments

This article will look at using the Conversation scope defined in JSR 299 (Java Contexts and Dependency Injection), and released as part of Java EE 6. For now, we’ll stick to non-data driven examples as we explore the ins and outs of the Conversation scope. We’ll finish up by creating a workspace manager so we can list all the active conversations and switch between them.
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By Andy Gibson • September 8th, 2010 • in Tutorials 2 Comments

This is a brief tutorial that takes a quick look at some of the very basics of JSF, how we define pages and hook them up to server side objects. Rather than cover the fundamentals of starting a new JSF application, I’m going to start from one of the Knappsack archetypes which can provide you with a JEE 6 application ready to roll. In this case, we are going to start with a servlet based example so you can run it using the embedded servlet containers.
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By Andy Gibson • September 1st, 2010 • in Articles 4 Comments

When I talked about how Context Matters When Discussing Frameworks I intentionally left out naming any picks because the point of that article wasn’t to start a framework debate (neither is this one, but at least it will get isolated in here). In this post, I’ll cover my choice of frameworks.
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