Categories
RDF

Jena Week: Migrating the first example

Recovered from the Wayback Machine. (Note: all examples are compiled and run on a Windows 2000 box, MySql 4.x, Java 1.4.1_01) I downloaded and unzipped the Jena2 from the SourceForge project and first thing I noticed is that there is a lot of material with this download. With the classes for the ontology support as well as […]

Categories
RDF

Jena Week: Lovely, lovely factories

Recovered from the Wayback Machine. While factories in the real world tend to be messy, ugly things polluting the environment, within Java, they’re wonderful creations that hide much of the implementation detail of Java interfaces. This is particularly obvious when we take a look at porting the third example from Chapter 8 in Practical RDF […]

Categories
RDF

Jena Week: Containers and namespaces

Recovered from the Wayback Machine. The RDF/XML syntax differs a great deal from vanilla XML, not the least of which is there is no assumptions associated with the order of elements, and XML lacks many of the precision refinements built directly into RDF/XML. For instance, in XML you can have several children of an element, […]

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RDF Writing

Even chickens can learn RDF

In a clever play on my For Poets weblogs, specifically my Semantic Web for Poets – a warped menage a duo of technology and art with images of rusting robots and silent metallic forests with moblogged fallen trees – Danny Ayers has created variations on the theme, all based on my RDF book. There’s: RDF for Woodcarvers RDF for […]

Categories
RDF

Jena Week

Recovered from the Wayback Machine. At the time I wrote Practical RDF, the folks at HP’s Semantic Web Research Lab were in the process of creating the second major release of Jena, the popular and extremely comprehensive Java RDF API. However, at the time, the release was in pre-alpha state and wasn’t stable enough for inclusion in […]