Stephans Blog

Using Groovy MarkupBuilders spoiled me for other ways to create HTML pages from code. Others think the same. But in some organizations you have to use Java and can’t use Groovy - at least when you can’t sneak it in.
So I tinkered around in Java to see what’s the best MarkupBuilder I can write […]

While testing Reposita with the Grails repository, I was amazed about Graeme who is the Grails project lead and recently became the CTO of G2One.
Scanning the Grails subversion commits and searching for bug fixes, Graeme seems to be a very very active bug buster. One in four commits is a bug fix. Perhaps this […]

When running JPA together with Grails (not tested on it’s own), with a Hibernate ORM either Hibernate, or with a pool the pool (c3p0), runs out of connections. The architecture of Reposita has a Grails frontend with a (Java) JPA backend to enable switching the frontend and backend independently. The MySQL database barks about to […]

As I wrote before, using Java JPA in my Grails application, the Grails application (0.6) hanged. After not much help from the mailing list, I updated to Grails RC1.0 without success. Adding the newest Hibernate JARs and Annotations JARs to the grails/lib directory solved my issue though. Grails no happily uses my JPA/Dao backend. Puh.
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Chris wrote about functional programming in Java. As an example he used Google Collections which “is a suite of new collections and collection-related goodness for Java 5.0″.
Looking at his post he gives the following code on how to use Goolge Collections

files = Iterables.transform(
Iterables.filter(
Iterables.filter(getPagesList(),WebPage.class),undeletedPages),
new PagesToFilesTransformation()))

This […]

When developing an application in Grails I’ve been adding a backend written for JPA. This should be no problem - you think. But while the unit test for the JPA backend work fine for themselves, when adding the backend to the Grails application, Grails hangs when accessing the EntityManager. It does not help that all […]

I need a tough decision to make. I’ve been using and evangelizing IDEA from the first IDEA release several years back. Whenever I came to a new company I introduced IDEA as an IDE and kept using it for commercial and open source use since then. Because I’m less productive with other IDEs I moved […]

Catchy title. But the guys from ALTERthought have some - much needed - numbers. Their numbers show Grails to be more productive than Rails, which is in turn more productive than Spring and pure JEE. As I’ve argued for years, there is no science in computer science. We need to put facts back into computer […]

I thought about what I did in the past. In the 90s I was heavily into developing applications with dynamic languages. Mostly Perl and Python. And a lot of Ruby later. They were much easier and faster to develop than C. Especially Python had the best web frameworks back then. Other languages we used like […]

After reading about new Groovy and Grails user groups around the world, I thought there might be Groovy and Grails users in Berlin. I would be interested in meeting to exchange ideas and experiences. Anyone interested?
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