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.

Spring Web Services 1.0 RC2 released

Releases | Arjen Poutsma | June 15, 2007 | ...

We are pleased to announce that Spring Web Services 1.0 RC2 has been released.

Spring-WS Logo

This is the second release candidate of Spring-WS, a product of the Spring community focused on creating document-driven Web services. This release contains fixes for bugs discovered since the RC1 release along with minor improvements.  In addition, the "Airline" sample application has been enhanced to use Java 5 features including the new @Endpoint programming model, JPA support, @Transactional, and more.

The next release is planned in a couple of weeks. If no major bugs are found this release will be promoted to 1.0!

For more information visit the Spring Web Services site.

Source for demos shown at NL-JUG session June 13th 2007

Engineering | Alef Arendsen | June 14, 2007 | ...

Yesterday, Joris and I gave a session at the Dutch Java Users Group. We did the session twice and had about 250 people in total attending the sessions. A lot of people asked for the code for the demos we did during the sessions. Attached you'll find the code for the AOP and Dependency Injection demos. It shows a simple aspect flushing the Hibernate session before every JDBC operation (not as robust as you'd want it in production code, but it's a start) and it also shows the CarPlant system (demo'd before in other sessions and previously attached to another blog entry) configured using the…

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