Is Open Source Dying? Case Not Proven

Engineering | Rod Johnson | June 28, 2007 | ...

Michael Hickins recently published a piece on eWeek entitled Is Open Source Dying? The title drew me in, and no doubt plenty of other folk too. But the article doesn't prove the case, although it contains some interesting points that merit discussion.

Most of the article concerns speculation about the experience of government with open source, and the motives of vendors such as IBM. I prefer to judge companies and individuals by their actions, rather than speculation about their motives, and there is plenty of evidence that IBM, for example, takes open source very seriously. There's plenty of…

Spring IDE 2.0 is Final

Releases | Christian Dupuis | June 27, 2007 | ...

After fixing approximately 250 bugs and working uncountable hours on adding support for Spring 2.0, Spring Web Flow, Spring AOP and Spring JavaConfig, we are proud to announce the immediate availability of Spring IDE 2.0.

Spring IDE 2.0 Logo

Download | Documentation | Changelog

The release is available from our release update site. Spring IDE 2.0 is licensed under the terms of the Eclipse Public License - v1.0.

New Features

Spring IDE 2.0 contains lots of new features and a bunch of bug fixes. A list of all closed tickets is available in our ticketing system. For those of you that are not familiar with recent development of Spring IDE here is a short list of features included:

  • Support for Spring 2.0 namespace-based configurations. We have put lots of work into that to make the support as extensible as possible. You can read more about that in another post.
  • Support for Spring Web Flow, including an extension to WTP’s XML editor for content assist and hyperlinking as well as validation and graphical editing. More information is available here.
  • Tools for Spring AOP based development. This includes support for validating configurations (parsing of pointcut expressions) and visualization of cross cutting references based on <aop:config> and @AspectJ-style aspects.
  • Support for Spring JavaConfig M2. This serves as sandbox for testing the extension points of Spring IDE’s core. Read more about that here and here.
  • Usability and UI improvements: A new Spring Explorer that replaces the Beans View, Content contribution to the Eclipse’s Project Explorer, a Spring Working Set type to reduce cluttering in the Project and Spring Explorer, Refactoring participants for rename and move refactorings of Java Packages and Classes as well as Bean names, New Project and Spring Bean configuration file wizard.

Spring IDE 2.0 is compatible with upcoming Eclipse 3.3 (aka Eclipse Europa).

Read more at the Spring IDE Blog.

So should you still use Spring's HibernateTemplate and/or JpaTemplate??

Engineering | Alef Arendsen | June 26, 2007 | ...

I was reading an article by Vigil Bose on TSS the other day and saw the usage of the HibernateDaoSupport class. Since this is no longer a recommended way of using Hibernate from Spring, I thought I might as well just blog about it another time.

With the advent of Spring 2.0, it has become possible to start using the Hibernate Session API directly again. The question is whether or not it is wise to abandon the use of the HibernateTemplate when working with Hibernate, or any other template-based approaches Spring features.

Using Spring XxxTemplates

In Spring 1.0, we introduced a revolutionary way of working with data access APIs that threw checked exceptions. The template approach Spring features along with its transaction synchronization manager and the extensive use of runtime exceptions makes any TCFTC (short for try/catch-finally-try/catch as we coined it back in 2005) often found in data access code entirely obsolete. Below you can see (a simplified version and not entirely precise version of) what Spring's template approach does for you (with specific code snippets that you would otherwise have to write). template.png

Acquisition of connection: If transaction synchronization is active…

Code samples from SpringOne 'Beyond the obvious' talk

Engineering | Joris Kuipers | June 25, 2007 | ...

Last week at SpringOne, Alef and I gave a talk on dealing with complex applications using Spring. Complexity in this case was considered both at the structural and dynamic level. As for the structural part of the talk, I covered that one in my previous blog posting. The dynamic part explained some possible solutions to deal with differences between your deployment environments. (testing, acceptance, production, etc.) A lot of people asked me if I could provide them with the source of the demonstrations I gave during the talk. I've attached the sources to this blog entry and will explain…

The Power of Batch

Engineering | Rob Harrop | June 23, 2007 | ...

In the last session of SpringOne yesterday, Dave Syer, Scott Wintermute, Lucas Ward and Wayne Lund all presented on Spring Batch. I didn't actually attend (since I had an early cab ride), but I stuck my head in and was yet again astounded by the amount of interest.

Back at JavaOne we had an immense amount of interest in this solution as well, with plenty of visitors calling by the booth to quiz us about batch.

It's all too easy in this world of Ajax and Rich Internet Applications to forget that a large number (a majority maybe?) of large scale enterprise applications are batch-oriented. Batch…

Putting Spring Web Flow to a Load Test

Engineering | Rossen Stoyanchev | June 22, 2007 | ...

Load testing a Web Flow application is similar to load testing any other web application – we'll use a load testing tool to simulate increasing levels of concurrent client access in order to capture essential performance statistics.

With Web Flow there will be a couple of important considerations for the load test:

  1. The load test must maintain independent “cookie storage area” so each client request can carry an independent HTTP session.
  2. We need a mechanism for extracting the unique flow execution key from the initial response and use it to customize subsequent requests in the same flow session.

Apache JMeter is an open-source performance test tool that can satisfy both considerations.

For 1) we add an HTTP Cookie Manager element at the root of each Test Group exercising Web Flow functionality. The Cookie Manager ensures each simulated client request can have its own…

Spring Framework Certified on WebSphere

Engineering | Rod Johnson | June 21, 2007 | ...

SpringOne is humming along nicely. This year it's a 3 day show, up from 2 days last year, and once again it's great to see hundreds of attendees at a Spring conference. For once I'm quite relaxed at a show, as after the opening keynote I have no further sessions, and don't need to work on slides.

Right now, Adrian is preparing to make a major announcement about Spring tooling. Well actually he's giving a uniquely personal take on duck typing, as I'm sure you'll hear...

More about that later, but first I need to share some news from yesterday. I was happy to be able to announce that we have…

Spring Framework 2.0.6 Released

Releases | Colin Sampaleanu | June 18, 2007 | ...

Dear Spring Community,

We are pleased to announce that Spring 2.0.6 has been released.  Spring 2.0.6 is a bugfix and enhancement release in the Spring 2.0 series, addressing all issues reported since 2.0.5 and backporting various refinements from 2.1 M2 (e.g. compatibility with JRuby 1.0).

Spring 2.0 Released


Please see the changelog and JIRA roadmap for all the details of the issues addressed in this release.

Juergen Hoeller
Lead, Spring Framework Development
Interface21 -


Spring IDE 2.0 RC2 released

Releases | Torsten Juergeleit | June 18, 2007 | ...

We are proud to announce that the last release candidate of Spring IDE 2.0 has been released. Read the announcement on the Spring IDE blog.

Spring IDE 2.0 Logo

Download | Documentation | Changelog

The release candidate is available immediately from our developer update site at Please take some time for testing and provide feedback on any errors, bugs or problems you might find. Many thanks to all that already provided feedback and bug reports. The feedback is really valuable for us.

The final version of Spring IDE 2.0 should be available around SpringOne 2007.

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