Julian Hyde has just announced the release of version 1.0 of olap4j, the open Java API for OLAP, on his blog:
I’ve been keeping an eye on this project not only because it allows Java developers to query Analysis Services via XMLA, but because I hope it will bring with it some good SSAS-compatible open source client tools. Out of the ones Julian mentions in his post, Saiku looks the most promising as far as I can see but when I have a spare moment I’d like to check them all out properly.
The only drawback with using olap4j with SSAS is that you need to configure http access to make it work, which is something most people don’t want to have to do. Hmm, wouldn’t it be nice if SSAS did this natively? Maybe it’s something that will come when we get SSAS in the cloud?