Jeroen Reijn

on Tech, Open Source and software development

Getting started with Vaadin

A couple of weeks ago I made myself a promise that I would look into a new technology every month and write something about it here. I’ve been looking around for technologies unknown to me and perhaps to some of you, so I will start out with a RIA framework called Vaadin.

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Unit testing your HST2 components with EasyMock

Quality is an important aspect of every software development project. Writing unit tests is just one part of keeping an eye on quality. In this post I will try to explain how you can unit test your Hippo Site Toolkit (HST2) components, so you can be sure that the component still behaves as expected even after multiple maintenance cycles.

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Large heap dump analysis with Eclipse Memory Analyzer

Most developers working with Java hardly have to think about the memory footprint of their application that they wrote. The garbage collector inside the JVM will remove most waste, but what happens when not all waste can be removed or something is wrong inside the application? This may result in an exception that probably a lot of developers and system administrators have seen before: java.lang.OutOfMemoryError (OOME). There are several causes for such an exception, but the most obvious is that there is memory leak somewhere in the application.

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An introduction to Hippo CMS 7 updater modules

Once your Hippo CMS project is in production, there is always the case that you or your customer wants to add extra features to the website or portal. This might mean that the data model has to change The data model for a piece of content in Hippo CMS is stored based on a JCR nodetype definition. As you might know the editor templates, which are related to the data model, can be edited live in the CMS. When you’re done editing the editor templates, you can use the ‘Update all content’ button to persist the changes in your existing content model. This might be a nice way of doing things during development, but performing such an operation on a live clustered environment can be quite tricky and you might want to do it in a more controlled and tested way.

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Giving Hippo CMS 7 some WebDAV support

A while ago a user on the Hippo CMS 7 forum donated a patch, which provided a servlet for simple WebDAV support. He donated his code as a proof of concept and hoped that somebody with some deeper knowledge of Hippo and it’s nodetypes could pick this up and continue to work on it. Since the patch was left alone for quite some time I picked it up and turned it into a Hippo Forge project and called it: ‘Hippo CMS 7 WebDAV Support’.

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