Studio Press

In the current issue of the Java Magazin I published a tutorial to develop loose coupled systems with Mule. The tutorial illustrates the usage of an Enterprise Service Bus in an airport domain, where different airport systems communicate with each other over the ESB. In the example I use a set of important Enterprise Integration Patterns and show how these patterns are implemented in Mule. Some

Some interesting news from the Open Source ESB Mule. The first milestone from the third version of Mule is out and comes with a major important feature: Hot DeploymentWhat is the meaning of hot deployment?Hot deployment is a process of deploying/redeploying service components without having restart your application container. This is very useful in a production environment when you have multiple

JUnit is a testing-framework well known to every Java developer (according ports to other languages exist). Kent Beck and Erich Gamma were the core-developers of JUnit, which was published around 2000 as Open-Source framework. It is fair to say, that JUnit and its ports had a huge influence on quality assurance and can be found in nearly every modern software project.Now Kent Beck announced a new

At thte last Maven Meetup Jason van Zyl talked about the future of Maven and important milestones of Maven 3, including:Support of incremental buildingsChanges about the Plugin-APIBetter Multilanguage supportand moreThe video and slides about the presentation are available here.

Now it finally happened: Oracle bought Sun for 7,4 billion dollar. It sure is a little bit surprising, as the deal with IBM seemed to be settled already. From a developers point of view, the Oracle deal might be better for the community, allthough it also has certain risks.For IBM Java is strategically very important, insofar Java would have been "save" with IBM. Additionally IBM has developed (

As I nagged yesterday about the fact, that AppEngine has no proper Maven-build system, already today the guys at Sonatype reacted ;-)They describe preliminary attempts in how to "Mavenize" AppEngine projects; hope they will be able to fix also the last issues!

AppEngine is a rather recent new service from Google. It is probably Google's answer to Amazon's cloud-computing platform, yet targets a very different market. Where Amazon offers a a broad range of services and high flexibility (with the disadvantage of higher administration effort) Google targets web-developers that want to publish web-applications. AppEngine started with a Python environment,

Finally hsqldb 1.9 (alpha, though) is released. This release was announced for, I believe, nearly one year. It seemed to me already that hsqldb is a rather dead projects. I am glad they made the next round, because in a way I still like that system a lot. Sure, Apache Derby is most likely the superior system, and H2 looks very promising too (but is still, as I understand it, a "one man show"

XML processing is an important part in present software systems, especially when communicate with other software components in the IT infrastructure. Pretty often you must provide your object data as XML. The Open Source market provides a wide range of XML tools, above all XML mapping tools, like Castor, JAXB and others. A very intersting and compact tool, existing since 2004 is XStream hosted on

I published an article about the new Mule IDE in the current issue of the Eclipse Magazin. In the article I give an overview about Mule and how the IDE supports developers to model their Mule applications. The IDE provides the following features:Mule project wizardMule runtime configuration (you can define different Mule runtimes)Graphical Mule Configuration EditorStart your Mule Server from your

I recently informed myself about the (Sun) Glassfish J2EE server. I never took it as a serious competitor in the field, as I had the impression it is just a reference implementation that is from Sun... However, I had to change my opinion. In the recent years it seems, that the Glassfish community worked hard on their baby and currently it seems to be a solid competitor in the field.The Glassfish

The architectural style REST has gained some popularity and is often brought up against SOAP for interoperable web services. REST stands for Representational State Transfer and has some characteristics that distinct itself from other architectural styles:Resources such as a person, an order, or a collection of the ten most recent stock quotes are identified by a (not necessary unique)

For anybody who doesn't know the Open Source ESB Mule, I can recommend the presentation from Ross Mason hold on the Java Polis conference. In this presentation Ross gives an overview about Mule, including the component architecture and new features in Mule 2. Other relevant topics are:Develop services in MuleDealing with web services in MuleException strategiesTransaction

Last week I joined the CEE-SET conference in Brno. On the conference I presented a paper written by Robert Thullner, Josef Schiefer and myself: We analyse the application of Open Source frameworks in implementing enterprise integration patterns. For that matter a series of scenarios was implemented with (combinations) of different frameworks like Apache Active MQ, Apache Camel, Apache Service Mix

The last couple of years major Open Source ESBs, including MuleSource and ServiceMix, have been expanded and are used in critical business solutions. Tijs Rademakers and Jos Dirksen offer a book which gives an overview about Open Source ESBs and which combination of Open Source technologies with ESBs are used. The main open source solutions covered in this book are Mule and ServiceMix. Therefore

Andreas Pieber and Jakob Spoerk wrote a thorough and very good thesis about software components and Java-based component frameworks. The authors introduce component-based software development, derive criteria to compare frameworks and eventually discuss OSGi, Spring, J2EE, SCA, and JBI on an individual basis and in connection with each other as some problems require the combination of several

In a recent series Jos Dirksen and Tijs Rademakers describe "pattern based development" on the basis of Open Source Middleware (ESBs). Specifically their first article describes how to implement and integrate applications using Mule and the second article gives a good introduction into the Java Business Integration standard (JBI) and the implementation ServiceMix plus a Message broker.

I am happy that the guys from Sonatype are continuously improving their free book on the "de facto standard" Apache Maven build-automation framework: "Maven: The Definitive Guide". The book covers most topics typical Maven users will encounter, including generation of documentation (site) and writing Maven plugins (mojos).I think this book is very useful for the newbie as well as for more

I found an interesting project: migrate4j which was introduced at Javalobby today. The idea behind this tool is to leverage the issues that come up when applications are developed using a relational database and the database schema changes between version. I.e., databases at customers or used by other developers have to be modified to the needs of the new version of the software. Probably you

For few weeks the new major release of the Open Source ESB Mule was released. On TheServerSide Ross Mason, the founder of Mule and CTO of MuleSource gives some statements about the new version. In this tech brief he points out the following issues:Major API changes and improvementsArchitecture improvementsTransports, transformers, Connectors have consistent look and feelSchema-Based Spring XML