Spring Batch 2.0.0.M2 is now available. See the Spring Batch downloads page for more information - there is the usual .zip download and also Maven artifacts in S3. Most work in this release went into the chunk-oriented approach to processing, which means changes to the ItemReader and ItemWriter interfaces, plus the introduction of the ItemProcessor as a top-level concern for translating between input and output items. Chunk-oriented processing is a key enabler for performance and scalability, as well as being much clearer for users in the extension points and interfaces (no more framework…

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In this article I will show you how to run a Spring Batch job in the SpringSource Application Platform. I ran an early version of this up as a little demo for JavaOne, and then again at the London Spring User Group, and thought it might be a good thing to share. The sample code is here. The bundle configuration is in META-INF/spring/module-context.xml (this is conventional for Platform bundles) - Spring DM picks up all XML files from META-INF/spring. This one just uses Spring to configure and launch an instance of the HSQL Server. There is an integration test that can be used to check the…

We've been working really hard on Spring Batch getting ready for the Spring Portfolio 2.5 release train, and I thought it would be a good time to update everyone on what is happening. In this article I'm going to expand a bit on the domain modelling, and our decision to raise the profile of some of the core domain objects, and increase their responsibilities. I will also give a few tastes of what is coming in the next couple of releases leading up to 1.0, so people have a chance to comment if they want to. By way of an apology: there have been some quite significant changes in the internals…

Since the introduction of Spring dynamic laguage support in Spring 2.0 it has been an attractive integration point for Groovy, and Groovy provides a rich environment for defining Domain Specific Languages (DSL). But the examples of Groovy integration in the Spring reference manual are limited in scope and do not show the features in Spring that are targeted at DSL integration. In this article I show how to use those features and as an example we add bean definitions to an existing ApplicationContext with a Groovy DSL from the Grails distribution. The basic features of Spring dynamic language…

We are pleased to announce that Spring Batch 1.0 M2 has been released! This milestone release introduces:A set of Core APIs that can be used for configuring and building batch applications.An execution environment and utilities for managing and monitoring multi-step jobs in a single virtual machine.Packaging the framework into three pieces: infrastructure, core and execution.More details on the features of this release and plans for the future can be found on the website (http://static.springframework.org/spring-batch, http://static.springframework.org/spring-batch/features.html). We expect at…

Grails seems to be going from strength to strength, and it looks like it definitely "has legs", as they say. I am quite interested in stretching those legs a little outside the web application arena. If you are aware of my work on Spring Batch, you will probably be able to guess where that might take me. But for this article I wanted to just share some experiences I've had with the basic, low-level deployment and build of a Grails application. I have a love/hate relationship with Maven 2, and I am learning to love Grails, but sadly the two do not play particularly well together. It would…