The verifier is a very nice piece of technology that helps many users fix their Java EE coding and packaging issues. There's been some interest from the community recently for potential contributions, so we've created a dedicated mailing list for this verifier-AT-glassfish.dev.java.net.

Now would be a good time to look into this technology (look for the bin/verifier tool in every GlassFish/Java EE SDK distribution). One of my favorite existing feature is the possibility to run a subset of tests (say EJB 3.0 persistence tests, Web tests, WebServices tests, etc...). Sahoo is coordinating the effort to improve this tool. Remember contributions could be eligible for the GAP.

The verifier tool is available as a command-line tool, as an ANT task, as part of the deployment process, as well as in NetBeans.

I bumped into this post from David dscribing his experiences migrating his app from JBoss 4.0.4-GA to GlassFish.

David covers 3 issues: • JBoss EJBQL != GF (J2EE Spec) EJBQL • Embeddable Objects, Entities and the GF Cache • Refresh and the GF cache Beyond this, it was a successful experience; for details, check out David's writeup. And keep the migration stories going...

Daniel posted a few weeks ago this blog entry about a code camp he and others have been running for ISVs to port and develop their applications on the GlassFish Application Server. Don't be put off by the page being in German, all of the GlassFish Workshop documents are in English and very good IMHO. They cover from GlassFish fundamentals such as basic installation steps to much more advanced details about how to adapt applications and their packaging for GlassFish.

Here's a list of those documents :
• Getting started, Introduction and Migration.
• Resource Management & Call Flow Monitoring.
• Clustering & Load Balancing.
If you're more into following slides, here's a good deck.

Wolfram, the author of JSP Tutorial describes in two notes how he moved that site from Apache Tomcat to GlassFish. The first one covers Virtual Servers in GlassFish. This was necessary to run multiple apps in his box (provided by 1x1). The second shows how to use asadmin to Add Resources to be used by his apps. Thanks, Wolfram!

Regarding the image... Andrew Sherratt argues for a follow-up to the Neolithic Revolution based on Secondary Products from the domestication of animals. Yeah, a bit convoluted, but I'm following a revolution theme for the migration articles... :-)

We are talking with more and more people who are planning migrating to GlassFish from other App Servers. To help them,Sekhar has sketched several migration examples covering Apache Tomcat, JBoss, WebLogic and WebSphere. The first includes a Hello World for Tomcat Migration. Check out Sekhar's plan and give him feedback.

And, if you want ideas for GAP projects, what about a good migration set of pages for one of those "other" AppServers?

Sekhar's Migrate2GlassFish project is beginning to make progress under Sekhar's direction. Check out his Introduction Note and his latest entry: Migrating From Tomcat to GlassFish. We are interested in your feedback on what is useful to help you migrate to GlassFish.