In Relation To... Everyone

...and sometimes I'm really not sure if I can classify myself as a member of a certain project (e.g., RichFaces). Other developers that hang around here likely have a similar story. Eventually, we just settle on the response, I'm part of the in.relation.to crowd.

However, for people that don't know this blog, or its history, this description makes no sense whatsoever. Which made me come to the realization that we lack a true identity within the JBoss Community. I believe this detracts from the spirit of integration and coordination between projects. As my first order as Community Liaison, I set out to fix that.

Seam is often described as the glue that brings together a myriad of standard and third-party Java EE technologies. The glue that brings us together is that we are all working on creating tools and frameworks for the application developer (some use the term enterprise web developer). This purpose not only unites those of us creating these technologies, but also unites us with the folks that consume these technologies. So, to align the name of our group with the common organizational group name of our community members, we have chosen this name for our group:

Application Developer Projects Group (or the more casual name, App Dev Group)

This group is a loose knit collection of projects which people often view as their development stack:

Seam
JBoss Tools
Weld (CDI)
RichFaces (JSF)
Hibernate Validator (Bean Validation)
Hibernate (JPA)
Hibernate Search
...perhaps others

We also recently formed the JBoss Testing Group that encompasses Arquillian, ShrinkWrap, JSFUnit, and other testing tools. Some of us are a part of that group too, myself included.

When we address this audience, or seek to describe where we fit in the JBoss community, we can really establish the connectedness by using the term App Dev, or Application Developer Projects, to show we are thinking about the concerns across technologies. So there you have it, our group name.

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Weld extensions alpha available

10. Mar 2010, 21:50 CET, by Pete Muir

Weld Extensions is set of portable services and utility classes for CDI which make up a good base layer for extension and application development. You can read more about the sort of portable extensions we are planning in this interview I gave.

Injectable Logger

Weld extensions includes an injectable logger, based on slf4j. By default, the fully qualified class name will be used as the category:

class Sparrow {
   @Inject
   private Logger log;

   ...
}

Alternatively you can specify a category:

class Finch
{
   @Inject @Category("Finch")
   private Logger log;
   
   ...
}

Managed Resource Streams

Weld extensions also contains managed resource streams (the stream is automatically closed for you when the bean goes out of scope) for resources loaded from the classpath:

@RequestScoped
class ResourceClient {
   
   @Inject @Resource("/META-INF/config.xml") 
   InputStream inputStream;

   public void parse() {
      // TODO Parse the inputStream!
   }
}

Here the stream will be closed for you when the request ends. Of course, you often don't know the file name you want to parse at development time, so you can also specify the name at runtime:

@SessionScoped
class ResourceClient {
   
   @Inject ResourceProvider resourceProvider;

   public void parse(String fileName) {
      InputStream is = resourceProvider.loadResourceAsStream(fileName);
      // TODO parse the XML!
   }
}

Here, the stream will be closed for you when the session is destroyed.

At the moment, only loading resources from the classpath is supported, but we'll add support for loading resources from the servlet context soon. As you can see, this can greatly simplyfy using input streams!

Extensions to the core CDI programming model

Gavin has blogged about a number of improvements to the CDI programming model, some of which are available in this release. Included are:

The extensions package is currently available in Maven, and we welcome feedback, either in the Weld forum or in JIRA. Thanks for this release go to David Allen for the injectable logger and to Gavin King and Stuart Douglas for the extensions to the core CDI programming model.

Tag: Weld

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