<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

Cascading Taps

Hadoop Security

Enhanced vanilla Map/Reduce support

Two New Samples

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…

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…

Welcome back to another installment of This Week in Spring! As usual, we have a lot to cover, so let's get straight to it!

1. Chris Beams has announced that the first milestone release towards Spring 3.2 is now available! This release is great!

   	It includes 
   
   	initial support for asynchronous <CODE> @Controller</CODE> methods,
   	early support for JCache-based cache providers,
   	significant performance improvements in autowiring of non-singleton beans,
   	initial delay support for <CODE> @Scheduled</CODE> and <CODE> &lt;task:scheduled&gt;</CODE>,
   	ability to choose between multiple executuors with <CODE>@Async</CODE>,
   	enhanced bean profile selection using the not (<CODE>!</CODE>) operator,  
   	48 bugs fixed, 8 new features and 36 improvements implemented. 
   	
   

   Check out the latest and greatest bits now, and feel free to give feedback!

   When I asked for any items for consideration into this roundup on my Twitter account, one user immediately shot back: "With the Spring 3.2 news, how about a poll on whether the community wants 3.2 M1 to be followed by RC1. It's too good to wait." I agree, this release is…

The Spring Roo team is pleased to announce the availability 1.2.2.RELEASE.  This is the second maintenance release for 1.2 and includes fixes for a number of issues and includes support for Spring Framework 3.1.1 and JDK 7.  Roo 1.2.2 also includes the excellent new "tailor" feature provided by our new partner, Accenture.

I hope you enjoy this new release!

Alan

Spring Roo Project Lead

In the Spring framework, many technical features rely on proxy usage. We are going to go in depth on this topic using three examples: Transactions, Caching and Java Configuration.

All the code samples shown in this blog entry are available on my github account.

Transactions

First step: no transaction

@Service
public class AccountServiceImpl  implements AccountService {
 //…

//Not specifying a transaction policy here!
 public void create(Account account) {
 entityManager.persist(account);
 }
}

Since the method “create” is not transactional, it will most likely throw an exception (because this Account object should not…

Welcome back to another installment of This Week in Spring. We have a lot of great content this week, as usual!

1. Rossen Stoyanchev has put up another blog in his series on Spring MVC 3.2 Preview. This latest installment introduces a Spring MVC chat example.
2. Oliver Gierke has announced the 1.1.0 GA version of Spring Data JPA. Spring Data JPA makes it very simple to build JPA-based repositories, saving you from the tedious boiler plate code. This new release includes new keywords for query generation (LessThanEqual, GreaterThanEqual, Before, After, StartsWith, EndsWith, and Contains), a handy PersistenceUnitPostProcessor to scan for JPA entities (to be used in Spring versions before 3.1), support for native queries in @Query, and support for declarative locking.
3. Jonathan Brisbin announced the 1.0.0.M2 release of Spring Data REST. Spring Data REST let's you easily export your Spring repository objects as RESTful endpoints. The new release includes support for invoking query methods of Repository interfaces, support for JSR 303 and Spring Validator validations, and improved support for Spring ApplicationEvents that are emitted before and after each save or delete, and annotation-based configuration.
4. Oleg Zhurakousky has announced the first milestone release of Spring Integration 2.2. This release includes dependency upgrades, JPA support, and support for "publisher confirms and returns," which are newly supported in Spring AMQP.
5. Gary Russell has announced version 1.1.0 of Spring AMQP that includes support for the RabbitMQ 2.8.x client, which in turn supports mirrored queues, broker failover, publisher confirms, returns, federated exchanges, and much more.
6. Matt Vickery has a great post introducing the Spring Integration splitter-aggregator pattern.
7. Willie Wheeler has a great post up on his custom configuration management database (a CMDB). The post details the project, and then talks about his use of Spring Data's repositories in rebuilding the backend for CMDB. Nice post, Willie!
8. Doug Haber put together a wonderful post on handling paging using Spring Data and the REST support in Spring 3.1.
9. Blogger panbhatt has a detailed post on using Spring MVC's REST support to solve a particular set of problems he was having.
10. Blogger OBSERWATORZY described his particular thought process when trying to consume a RESTful service, and wondering if Spring provided an answer (of course it did!). Read on for his resolution.
11. Vishal Biyani has put together a nice introduction to getting started with Spring Roo and Cloud Foundry.
12. The RabbitMQ blog has an amazing article introducing queueing theory (with an introduction to throughput, latency and bandwidth.
13. JAXEnter has a nice roundup of some of the news releases described in this very post, including the Spring AMQP and Spring Data JPA's GAs.

Welcome back to another installment of This week in Spring!. We've got a lot to cover this week, as usual. So, onward!

1. Rossen Stoyanchev has just released part two and three of his blog series introducing Spring MVC 3.2's new features. In the first installment, Rossen introduces how to make a Spring MVC @Controller asynchronous. In the second post, Rossen introduces how to add long polling to an existing web application. Long polling is useful in any number of scenarios where you want to simulate server-side push with client-side applications.

<LI>  The video for <a href= "http://blog.springsource.org/author/ozhurakousky/">Oleg Zhurakousky</A>'s followup webinar introducing <a href ="http://www.springsource.org/node/3550">More Practical Tips and Tricks with Spring Integration</A> has just been posted. Check it out! </LI> 
 <LI> <A href ="http://blog.springsource.org/author/rclarkson/">Roy Clarkson</A>  just announced that <a href = "http://www.springsource.org/spring-mobile/news/1.0.0-released">Spring Mobile 1.0.0 has  been released</A>!  </LI>



<LI>  SpringSource and Cloud Foundry rockstar  <a  href  ="http://blog.springsource…