Ontopia on Google AppEngine

Google AppEngine
Google AppEngine

Stig Lau has set up an example Ontopia application (source) running on Google AppEngine. This means that Ontopia web applications can run on Google AppEngine, which again means that it’s possible to get free hosting (up to a certain limit) for Ontopia-based web applications.

Note that there are some limitations. Firstly, this does not apply to the 5.0.0 release; Google AppEngine only works as of revision 421. Secondly, it only works with the in-memory backend for now. We are considering to try running with a pure-Java database to see if that is possible, in which case this could become a very interesting option indeed.

A Maven repository for Ontopia

Developers using the Maven build tool (or Ivy) can now get Ontopia from the Maven repository which Stig Lau just set up for Ontopia. This means that instead of having to download Ontopia and put it on the classpath they can instead just refer to the repository, and Ontopia will be automatically downloaded from there.

In the longer term, the aim is to get Ontopia into some other Maven repository, so that users do not have to reference a special repository just to get Ontopia. We are still working on this.