I have just added a new project to my github repo: CoheSiVe From the silly capitalization you can already guess that it’s a CSV library. It differs from other libraries I’ve seen in that it doesn’t attempt to read the whole file in one go, but is uses an event-driven architecture so that your application [...]

For a project of mine I’ve had need for a robust, decent connection pool for Cassandra. Since I use the thrift APIs directly without other layers, I decided to use Tomcat 7′s excellent jdbc-pool as a base. The result is my cassandra-connection-pool which at the moment may be fetched from my github repository at http://github.com/tristantarrant/cassandra-connection-pool [...]

I have just released the code for Catwalk a Java Annotation Processor for automatically generating derived domain model classes. Supposing you have a JPA Entity which you want to pass to a servlet stripped of certain private / internal properties, adding a few annotations to the getters you want to expose allows Catwalk to generate [...]

Recently I helped configure a system for an application running under Tomcat on Linux with very large memory requirements: a minimum heap of 6GB with a maximum of 11GB. The JVM was initially configured to use the Parallel garbage collector. With this configuration garbage collection of the “Young Generation” was fine, but the “Old Generation” [...]

I have started yet another open-source project: Too-OneBee. It’s both an embeddable and standalone web console for monitoring a J2EE application. It lives at Google Code: http://code.google.com/p/too-onebee/ It embeds a javax.scripting console for running scripts within the webapp, a JMX browser, a session/request/application/server context viewer, a JNDI browser. I would like to add pluggable handlers [...]

I am currently cleaning up the various Canyon SPIs (Service Provider Interface) so that the canyon object which is exposed to the scripts now has a standard interface for the various methods therein (show(), hide(), get(), etc). Next up is writing the much needed documentation, tutorial and website. I’ll try to do that when I [...]

I released Canyon Core 0.5.1 today. It is available either from the Dataforte Maven Repository at http://www.dataforte.net/listing/maven/releases/ and tagged in SVN at https://canyon.svn.sourceforge.net/svnroot/canyon/tags/canyon-core/canyon-core-0.5.1/ This is the first stable release of Canyon Core, and I’ve put quite a bit of work into it over the past few years. Releases of Canyon Echo2, Canyon Cooee and Canyon [...]

In order to make the widgets available as object during script execution, I have extended javax.script.SimpleBindings so that I lookup keys in the widget hierarchy before handing it down to the backing map by overriding the get() method. This was how I did it when using the Groovy implementation directly. I have discovered that javax.script [...]

Canyon is my implementation of the concepts behind various kinds of XML-based application interface tools (XAML, Flash MXML, ZK, etc). Canyon started off as a way to describe Echo2 (http://echo.nextapp.com) applications using XML bound together with Groovy (http://groovy.codehaus.org) scripts. Recently I’ve been working on refactoring Canyon to support multiple widget libraries (Echo2, Cooee, Echo3, Swing, [...]

The WARShield stuff progresses nicely: it now implements most of the feature-set I had in mind. I have also implemented an event/listener method so that other ContextListeners / Servlets /Filters can get notified when the configuration is readily available, changes, etc. Currently the configuration is stored in a single properties file, but I am adding [...]