presenceCube.addDimension(spaceDim);
presenceCube.addMeasure(episodePresence);
//define data warehouse
DataWarehouse dw = new MondrianDataWarehouse("simone","test");
dw.addCube(presenceCube);
logger.info(((MondrianDataWarehouse)dw).getSchema());
spaceDimension.releaseObject();
episodeFacts.releaseObject();