I came across the term ‘semantic web’ a couple of years ago, when one of the original creators of Apache Cocoon went of to work on the SIMILE Project at MIT. I didn’t pay much attention to the concept of ‘semantic web’ back then, because I just started learning Apache Cocoon and still had a lot to learn.But over the last couple of months I’ve been doing some research on the currently available standards for providing semantic data on the web with a strong focus on RDFa.
At Hippo we have a project, which is build with Java Server Faces, for which I occasionally do some maintenance. A while ago I had an issue in our JIRA bug tracker that reported an error for the Japanese version of the website. The error came from a component that reads information from a resource bundle properties file, which is stored on the local filesystem. In this case from the Japanese version of the resource bundle (ApplicationResource_jp.properties), which is used by the web application to display some Japanese labels.
A JCR repository, like Apache Jackrabbit (basis for Hippo CMS 7’s content repository), mainly consists of nodes and properties. As described in the JCR specification, a Java Content Repository should support 2 different query syntaxes: XPath and SQL. Once you get the hang of the syntax, performing a search on a JCR repository is quite easy, but today I came into a situation where I was not able perform the query I wanted. In this post I’ll try to describe what my problem was and how the same result can still be achieved.
I just did a fresh install of Ubuntu Jaunty Jackalope(9.04). After reinstalling Thunderbird (my favorite mail client), I was unable to see my Google calendars with Thunderbirds Lightning extension.