Andy Gibson

Software Development Blog

Posts Tagged cdi

Weld 1.0.1-CR2 is available

Feb 14

Posted by Andy Gibson in Java | No Comments

Dan Allen posted that the latest CR version of Weld is available. This should contain a number of bug fixes from the initial release of Weld, including the two problems I had with the request scope being available in EJB timeouts and problems with the ability to proxy stateless beans. This last bug was for me rather crucial since there was no easy way to implement DAO (just data management) type components with transactional annotations that could be injected into business logic beans. Without that, you end up having to write your own transaction handling code.

Also in the comments of the announcement, Max Anderson notes that the nightly builds of JBoss Tools 3.1 now supports CDI auto completion and JSF 2.0. I had a very quick look at it yesterday and it looks promising. I also tried it out with the latest JBoss 6 snapshot and am very pleased to say that the redeployment times on JBoss 6 are much faster and more in line with the performance on Glassfish which is something I have raved about.

I’ll be looking at it some more and probably write up a couple of tutorial posts.

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Getting Started with JSF 2.0 and CDI part 3 – Events

Jan 11

Posted by Andy Gibson in Java | 5 Comments

Last time we looked more in depth at CDI and how we can define beans and inject them into other beans. This time we are going to look at how we can use events to decouple the handling of actions in the system.
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Getting Started with CDI part 2 – Injection

Dec 22

Posted by Andy Gibson in Java | 15 Comments

In part 1, we looked at creating a JEE 6 application with Netbeans using JSF and CDI running on Glassfish. Now we’ll take a closer look at using CDI for managing dependencies in a Java EE 6 environment.
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Getting Started with JSF 2.0 and CDI in JEE 6 part 1

Dec 16

Posted by Andy Gibson in Java | 22 Comments

Here's a quick tutorial on how easy it is to get started with JSF 2.0 and JSR 299, Java Contexts and Dependency Inject (CDI) using the latest release of Netbeans 6.8.
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Java EE 6 Is Here

Dec 10

Posted by Andy Gibson in Java | 1 Comment

Like Christmas come early, Sun announced the release of JEE 6. This release sees continued improvement in the JEE stack with the inclusion of JSR 299, Java Contexts and Dependency Injection (CDI), and EJB 3.1 as well as JSF 2.0, and JPA 2.0. JSF especially has seen changes as a result of practical user feedback and community add-ons such as Seam and JSF Ajax frameworks which have contributed back to the JCP.

Glassfish v3 which implements the full JEE 6 stack has also been released, with JBoss’ Weld as the CDI implementation. Netbeans 6.8 has also been released with full JEE 6 project support including maven support for enterprise applications. Also of note is the hot deploy function of Glassfish which can deploy your app while maintaining session information.

Personally, I’m pleased. JEE 6 has really improved things for the java standards, and CDI has filled some gaps that previously required different additional pieces to completely fill. The ghosts of EJB 2.1 should now be permanently laid to rest, but should serve as a stark reminder. Having good frameworks to build standards based solutions is always good for the community.

I’ll try and get some tutorials on developing with CDI and JSF 2.0 with Netbeans and Glassfish out soon.

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Seam is Dead, Long live Seam

Dec 3

Posted by Andy Gibson in Java | 1 Comment

With Weld 1.0, the reference implementation of JSR 299 – Java Contexts and Dependency Injection now released, attention at JBoss has no doubt turned to Seam 3 which is going to be built on top of Weld. Red Hat and JBoss are committed to returning innovations back the JCP as is the case with Seam which not only resulted in JSR 299, but has also influenced a number of other JSRs especially JSF 2. With JSR 299 standardizing the Seam ’style’ of development it also brings about a some fundamental game changes for Seam 3 (hence the title) as much of the strength of Seam becomes part of the JEE standards.
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Conversational Pitfalls

Nov 17

Posted by Andy Gibson in Java, seam | 3 Comments

Seam conversations have certain rules that you need to be aware of when using them. This article came about because for the last couple of years, the same questions have been asked on the Seam forums regarding conversations. It is also a couple of issues that cropped up while I was working on the Seam vs. Spring Web Flow articles. Some of the problems are uncannily similar with similar solutions, so parts of this series may be of interest to non-Seam users. Additionally, it seems like a lot of this stuff will also apply to the conversational pieces of JSR 299 – Contexts and Dependency Injection which will be a part of JEE 6.
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