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By jettro, on February 25th, 2010
 The last weeks or maybe even months, I have spent time getting to understand the Axon Framework created by Allard. Axon is a framework that can help developers created a scalable and maintainable application based on Command Query Responsibility Segregation (CQRS) principles. Each morning Allard and I discussed the framework and the sample we wanted to have. Since I know my way around flex and Axon makes heavily use of events, I decided to create a flex client that could demonstrate some cool features of the Axon framework.
 This post is mainly about flex and Parsley. We will go into depth of the architecture of the client and how to talk to the server. I will describe the communication with the application that makes use of the axon framework, but I will not go into a lot of details. If you want more information about the Axon Framework I suggest you go to the website http://www.axonframework.org. There is good documentation available in the reference manual. If you want to learn about flex and the Parsley framework in general, please read on.
Continue reading Creating a sample for axon using flex and parsley
By Allard, on February 21st, 2010
 Last week, I published the 0.4 release of the Axon Framework. Axon helps developers build high performance, scalable and extensible applications using the CQRS pattern. The 0.4 release is a major step towards 1.0, and includes transactional event handling, high-performance caching repositories and easy configuration of event sourcing support. Furthermore, we have also built a demo application that uses Flex to get real-time updates pushed from the server.
Read on to find out more.
Continue reading Axon Framework – the CQRS framework for Java – version 0.4 released
By jettro, on February 17th, 2010
In March 2008 I started experimenting with flex and java integration. I wrote a lot of blog posts since than and even published an article on adobe.com. For most of my blog items I used a sample that is available on google code called books-overview. During the years the sample improved a lot. By now the sample consists of Mate, BlazeDS, Spring BlazeDS and a lot of other spring technologies like spring security.
I was some time a go I had a look at the sample, since than a lot of people keep coming back to it. I still get questions about it. Therefore I decided to upgrade the sample. This blog post is about the upgrade I did which are mainly upgrades in versions of the libraries and the build configuration. Still I think it is worthwhile to have a look at it.
Continue reading Upgrading my books-overview flex, BlazeDS, Spring security application
By jettro, on February 16th, 2010
For my current customer I had to create an rss feed. In the java domain you immediately grab Rome to do the job. There was a catch. My customer wants (with good reason) to have feeds validated by the w3c feed validator. This turned out to be a slightly more complicated job. Luckily Rome has good support for extensions, so at least it was possible.
In this blog post I describe the challenges I had creating the validated feed. If you want more in depth information please check my post on my employers blog : serving a heavy load rss feed with spring 3 and ehcache.
Continue reading Creating a w3c validated rss feed using Rome and spring 3
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