[Mondrian] Mondrian 4 as a Pentaho Plugin

Kurtis Walker kwalker at pentaho.com
Fri Jun 27 11:31:32 EDT 2014


Yes, but I think most of them already are.  If the manifest has a Bundle-Name, Bundle-Version, etc, then it is ready for osgi.

On Fri, 2014-06-27 at 10:24 -0500, Tom Barber(Alabs) wrote:
Hmm thanks for the tip Kurtis, no joy so far. Should I assume the driver needs osgi'ifying?

Thanks

Tom

On 27/06/14 15:46, Kurtis Walker wrote:

The hive error is misleading.  It really means that no JDBC driver could be found to satisfy your connect string.  I think you'll need to put your driver in the OSGI directory also.

On Fri, 2014-06-27 at 09:33 -0500, Tom Barber(Alabs) wrote:
Looks about right, thanks Luc, Mondrian + Commons IO needed placing in the osgi directory.....

Now if only I knew why on earth its trying to use Hive to connect....

On 27/06/14 14:11, Luc Boudreau wrote:

Oh right. That'd be in the EE builds only I'm afraid.

The modules should be in solutions/system/osgi

On Jun 27, 2014 8:59 AM, "Tom Barber(Alabs)" <tom at analytical-labs.com<mailto:tom at analytical-labs.com>> wrote:
Interesting Luc, you mean should work out of the box, as in, there is already a jar there?

I downloaded 5.1 and had a look, the Mondrian Jar I found(grep) was labeled 3.7 and I asked Pedro and he said there were some Mondrian 4 stuff for Mongo but not in general population.

Tom

On 27/06/14 13:50, Luc Boudreau wrote:

Hello Tom,

With a 5.1 server, all you need to do is use "jdbc:mondrian4" instead of "jdbc:mondrian" as the URL prefix and it should work out of the box.

Let us know if you run into any issues.

Luc

On Jun 27, 2014 6:38 AM, "Tom Barber(Alabs)" <tom at analytical-labs.com<mailto:tom at analytical-labs.com>> wrote:
Alright chaps,

I'm trying to crowbar Mondrian 4 into the BI Server Saiku plugin and I
would like some clarification of a few bits and pieces.

We've shipped our own Mondrian Jar and also done some funky cache
sharing etc, anyway, I would like to ship Mondrian 4 and unsurprisingly
its not as simple as just replacing the Jar.

I would like to know

a) is it even possible? I saw Julian's slide suggesting that the
Mondrian 4 lib should run happily alongside Mondrian 3 as an OSGI module.
b) To bootstrap Mondrian we currently run  Class.forName(
"mondrian.olap4j.MondrianOlap4jDriver" ); but if have 2 Jars, how does
is it supposed to know which to bootstrap, or should it load Mondrian 3,
but Mondrian 4 be automatic or do I have to register the Mondrian 4 jar
in a different manner?
Either way I get
java.lang.IllegalAccessError: class mondrian.olap4j.MondrianOlap4jExtra
cannot access its superclass mondrian.xmla.XmlaHandler$XmlaExtraImpl

The first time I try and run Saiku followed by
java.lang.NoClassDefFoundError: Could not initialize class
mondrian.olap4j.MondrianOlap4jDriver

The next time, so I need work out how to unclash them if possible.

I tried just straight replacing Mondrian 3 with Mondrian 4 in the
platform out of curiosity but with that I get a linkage error so that
test was also a no go.

Anyway, hints or tips please.

Thanks

Tom
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