Introduction

Over the last year a number of significant changes have been made to the infrastructure and processes we use to keep the Spring family of projects running smoothly. You may have seen individual announcements about some of these as they happened, while others may have slipped under your radar. I'll recap these changes below. When put together they portray a bigger picture.

GitHub project hosting

Individual Spring projects have been migrating to Git and GitHub for quite a while. You may recall our announcement last Christmas that the Spring Framework itself had made the move. With the recent migration of Spring Web Flow, we're happy to announce that all major Spring projects are now hosted under the SpringSource organization at GitHub.

There are benefits for project committers and Spring users alike following the move to Git and GitHub. GitHub has an excellent UI for code browsing, history of changes, and commit comments. And with the amazing number of open source projects already hosted at GitHub, this means that you're using one well-understood UI and that you already know how to browse source control, examine recent changes and so on. But GitHub's real power is in the way it encourages and supports community contribution. This point is discussed further in the "contribution process" section below.

For now, check out…

I'm pleased to announce the release of Spring Data REST 1.0.0.RC1! Beyond a number of bug fixes, this release adds support for paging and sorting and makes it easier to integrate Spring Data REST into an existing Spring MVC application.

New functionality includes:

• Paging - Add URL parameters like "page=2" and "limit=20" to control the paging of large result sets.
• Sorting - Add URL parameters like "sort=name" to control the sorting of result sets.
• Integrate with existing Spring MVC applications - Now you can easily integrate Spring Data REST into an existing Spring MVC application by simply including a JavaConfig bean into your own configuration.

New documentation includes:

• Paging and Sorting
• Adding Spring Data REST to an existing Spring MVC Application

Starter Web Application | Wiki | Release Notes

To learn more about the project, visit the Spring Data REST homepage, or visit the Github repository to download the source.

Dear Spring community, I'd like to announce the availability of Spring Data MongoDB 1.0.2. It's a bug fix release containing 20 bugfixes and improvements.

Downloads | JavaDocs | Reference Documentation | Changelog

The release is available from our Maven repository and from Maven Central as well. To learn more about the project, visit the Spring Data MongoDB Page. Looking forward to your feedback on the forum or in the issue tracker.

<P> This week the I'm at QCon New York talking to people about Spring, Cloud Foundry,  vFabric, and  much more. Attendees at QCon conferences always keep things interesting with great questions and ideas.  
	 

As usual, though, the internet has given us a lot of great content to look at this last week, so let's dive right into the roundup!

</P> 

1. If you missed Gary Russell's excellent webinar introducing managing and monitoring of Spring Integration applications, don't worry, the video is on the SpringSource YouTube channel.

 <LI>  Details of the new  release of <a href = "http://www.springsource.org/node/3573">Spring for Apache Hadoop 1.0.0.M2</A> are available. For information on the project itself, check out this  <a href = "http://blog.springsource.org/2012/06/1…

Welcome back to another installment of This Week in Spring. We've got a lot to cover this week, so let's get to it!

1. Gordon Dickens is at it again, this time with a great look at Spring 3.1's constructor namespace, which provides the logical counterpart to the p: namespace element.
2. Matt Vickery's at it again! He's got an interesting post on how to use the C24 iO product with Spring.
3. The Vaadin blog has an interesting post on serialization with the Vaadin web framework and Spring.
4. The Java Code Geeks has a blog post on using the RESTEasy REST framework with Spring-based services. While I would recommend the Spring REST support in Spring MVC over this approach, it's at least interesting to have the recipe if you ever need to use it.
5. The Java Code Geeks blog has another post on building Spring-based JPA services that sit behind a RESTful CXF backend. This is another one of those situations where, while it's useful to know how to do in case you need to, you're better off using Spring MVC's REST support. It's easier, and integrates more naturally with the component model.
6. The Banging My Head Against a Wall blog has a great post on Upgrading from Spring 2.5 to 3.1. This blog shows that the migration is dead simple, if you haven't already made the jump, and he's got insight into one particular little gotcha you might hit to make the migration that much smoother.
7. The TeamExtension blog has a quick post introducing how to get started with Spring Mobile 1.0. They recommend stock Eclipse with the m2e support, but of course, if you use the SpringSource Tool Suite, you won't have to set anything up.
8. Are you a .NET developer looking for a solid dependency injection framework like Spring? Have you heard about Spring.NET, the dependency injection framework from the same people behind SpringSource? Blogger Łukasz Budnik has an interesting post about Spring.NET's superiority over other alternatives in the space (Microsoft's Unity and Ninject).

I am happy to announce that the second milestone (1.0.0.M2) of Spring for Apache Hadoop project is available. In this blog post, I would like to quickly highlight the major new features in M2.

HBase DAO support

One of the most versatile and powerful feature in Spring Framework is the Data Access Object (or DAO) support. With Spring for Hadoop 1.0.0 M2, the same functionality was added for HBase. Users of the popular template and callback pattern should feel right at home as the framework handles the table lookup, resource cleanup and exception conversion, letting the developer focus on what really matters. See the API and reference docs for more information. By the way, we also included a new sample in the distribution, hbase-crud, to help you get started right away.

Cascading Taps

In M2, we have expanded the integration with Cascading library by Taps for Spring Framework and Spring Integration resources. The richness of Spring Integration adapters (whether inbound or outbound) such as File, TCP, Twitter, FTP, RSS (just to name a few) is now available to Cascading (and its extensions such as Cascalog or Scalding). And we are just getting started - expect more news on this front.

Hadoop Security

With M2, moving from a vanilla Hadoop install (such as a dev machine) to a fully Kerberos-secured Hadoop cluster is transparent. The File-System, Map/Reduce and Pig components are all security-aware, executing under proper credentials and supporting user impersonation. See the dedicated chapter for more information.

Enhanced vanilla Map/Reduce support

Since the beginning, Spring for Apache Hadoop offered extensive support for Map/Reduce jobs - whether it is vanilla or traditional Java Map/Reduce, streaming or tooling. In M2, we have added support for Hadoop generic options across the board, making job provisioning, either by naming resources individually or through pattern matching, a one-liner. Further more, we have enhanced the bootstrapping of jar-based jobs - rather then requiring the classes to be on the classpath, the job can be fully loaded, in isolation, from the jar. The classes (and their dependencies) do not leak into the application which avoids all sorts of versioning conflicts and dependency creep. The tool declaration has been improved to automatically read the Jar metadata and its Main-Class, offering a powerful, fully managed replacement to Hadoop shell jar invocations.

Two New Samples

Last but not least, two new samples have been added to the distribution: hbase-crud, which I mentioned before showcasing the declarative and programmatic HBase support and pig-scripting, demoing the JVM and Pig scripting: the former doing data preparations in HDFS for the latter, which does data analysis. There are more samples in the pipeline and if you would like to see anything in particular, tell us.

I hope you enjoy this new milestone. Go ahead, grab 1.0.0 M2, take it for a spin and let us know what you think!

Other News: Project Serengeti

As far as new releases go, Spring for Apache Hadoop 1.0.0 M2 is not the only news on the Hadoop front. Today, VMware takes the curtains off project Serengeti, for virtualized and Highly Available Hadoop. See Richard McDougall's blog post on the motivations behind it, the current status…

Dear Spring Community, I am pleased to announce the release of Spring for Apache Hadoop 1.0 M2:

Downloads | JavaDocs | Reference Documentation | Changelog

The Spring for Apache Hadoop features include support for:

• DAO support (Template & Callbacks) for HBase
• Cascading Taps for Spring & Spring Integration
• Support for Hadoop Security
• Enhanced Map/Reduce support
• Two New Samples (hbase-crud and pig-scripting)

For more information on this release of Spring for Apache Hadoop, see this blog entry or the reference documentation.

Speaking of announcements, Project Serengeti was announced today. See Richard McDougall's blog post for more information.

We look forward to your feedback on the forum or in the issue tracker.

Welcome back to another installment of This Week in Spring. As usual, we've got a lot to look at this week so let's get to it..

1. The video from Chris Beams's recent webinar on the various styles of dependency injection that Spring supports is up. Chris is a core Spring framework engineer (and all around good guy). This video is definitely worth a watch especially if you still think Spring configurations requires XML.

   	  </LI> 
    <LI> Oleg Zhurakousky announced the availability of 
   	 <a href = "http://www.springsource.org/node/3569">
   	 Spring Integration 2.1.2 RELEASE and 2.2.0M2</A>. The new releases are filled with many important bug fixes as well as several  
   	
   	 new features.  
   	 </LI>
   	<LI>  Roy Clarkson has announced the availability of <a href= "http://www.springsource.org/spring-android/news/1.0.0-released">Spring Android 1.0.0.RELEASE</A>! The project is an extension of the Spring Framework that aims to simplify the development of native Android applications by providing RESTTemplate support for…

The Spring Integration team is pleased to announce the release of:

Spring Integration 2.1.2.RELEASE - a small maintenance release with some important bug fixes

• Release notes are available here
• Artifacts are available in SpringSource repo, community download page and Maven Central

Spring Integration 2.2.0.M2 - Second milestone release of 2.2 stream whose main theme is JPA support as well as other important features and improvements

• Release notes are available here
• Artifacts are available in SpringSource repo and community download page

More information is available on project's home page