UK JBug meeting on 13th December 2007

November 12th, 2007 Radim Marek

After several weeks of preparation I’m happy to invite you to the next meeting of UK JBoss User Group, which is going to be held on Thursday 13th December 2007 in London. Effort of our team in BSG has resulted in quite exciting line-up.

The keynote presentation is going to be focused on JBoss Rules and will be delivered by the most competent person in the field – Mark Proctor, project lead of this project and founder of Drools Rule Engine. His presentation will focus on the engine in its very aspects as a processor of business rules captured in variety of languages and how they are encoded in the enterprise systems.

The other presentation will be thorough introduction of the award winning IntelliJ IDEA, especially the recently released version 7.0, and how it can improve your development with JBoss products and more. In addition, there will be also license give-away of this excellent IDE for few lucky attendees.

Last but for me personally not least, is my humble technical session focused on the migration to JBoss AS 4.2. Based on the challenges and questions I’ve been facing for last couple of months, I’ll try to provide detailed guide through different aspect of the upgrade process. Particularly migration from branch 4.0 will be discussed. If you have any particular question, please, do not hesitate to contact me and I’ll try to include it.

Does it sound interesting for you? Then check detailed agenda or register (strongly recommended as number of attendees is limited).

Hope to see as many of you as possible in December!

Link: UK JBoss User Group Website

Posted in jboss | 2 Comments »

Problem with EJB3 security in JBoss 4.2.X

November 7th, 2007 Radim Marek

Release of JBoss 4.2.X has been significant because of the integration of important bits from Java EE before release of JBoss AS 5. Sadly important fix to align EJB3 security in this branch, announced for version 4.2.1 (JBAS-4198) does not exist. Duplicate ticket (JBAS-4423) has been reason why this issue has been closed in JIRA as duplicate ticket, unfortunately with fix version assigned – yes, you can guess - to 4.2.1.

Therefore if you’re trying to use @RunAs annotation on MDB in order to call secured session beans, you’ll experience following exception:

java.lang.IllegalStateException: No valid security context for the caller identity

I truly hope this task will be integrated into 4.2 branch and we don’t have to wait for release of JBoss AS 5.

Original topic from JBoss Forums:
Bug in SecurityAssociation(?) - EJB3 MDB Calls

My topic to verify the problem:
@RunAs on MDB and not finished alignation of EJB3 security

Posted in jboss | No Comments »

JBoss Seam 2.0 released

November 6th, 2007 Radim Marek

Finally I can delete all my betas, because JBoss Seam 2.0 has been released today.

Link: Download
Link: Documentation

Don’t miss official post What’s new in JBoss Seam, or check my list published few weeks ago.

Posted in seam | No Comments »

Dev Fu: Bowler Hat strikes back

November 4th, 2007 Radim Marek

World of open source has changed drastically and so has one of the most iconic company behind it – RedHat. Open source reached enterprise. Enterprise reached open source. The share price is becoming more important than latest kernel version.

If there wasn’t the acquisition of JBoss by RedHat last year, I would probably forget about RedHat for once and for all. But things went in the rather different direction. Let’s hope it’s for good in the longer term. Lately the some negative changes emerged. For example in the last couple of months, alterations to the JBoss website made it quite hard to distinguish the open source projects and commercial enterprise middleware. The separation of jboss.com and jboss.org (labs.jboss.com) hasn’t been promoted as much as it would be needed. The constant questions I’m facing related to this topic are bitter evidence of this problem. I have to ask myself, if it is so difficult to separate both domains completely? I don’t think so.

But to switch to positive note, I would like to dedicate this post to RedHat’s new developers’ portal called Dev Fu. Recently it seems to receive the attention and new articles are being published frequently. Hopefully it will help to improve perception of identity of the RedHat’s open source projects and that’s the reason why I’m happy to promote it. The other question is the mixture of Linux and JBoss articles, but we shall see how this rather difficult combination is going to settle down.

Link: Dev Fu [http://developer.redhatmagazine.com/]

Personally I would like to recommend article Continuing the Conversation – Understanding Seam Nested Conversation. Because the conversations are one of the most important parts of JBoss Seam, this article should provide you enough information to understand the concept behind it and therefore understand the framework a little bit more.

Posted in jboss | No Comments »