Bug 182296 Crosstab - non-numeric measures
Feature request. Looking at the 2.2.M6 release, it seems that measures (the fields that can be in the matrix part of the output) need to be numeric. I looked at the spec documents and it seems there is no requirement for non-numeric measures
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/dimension/Hierarchy.java
}
		validateDimensionMembers( sortedDimMembers );
		DiskIndex[] diskIndex = new DiskIndex[indexKeyLists.length];
		for ( int i = 0; i < indexKeyLists.length; i++ )
		{
			
			diskIndex[i] = DiskIndex.createIndex( documentManager,
					NamingUtil.getLevelIndexDocName( levelDefs[i].getLevelName( ) ),
					indexKeyLists[i],
					false );
		}
		levels = new Level[levelDefs.length];
		for ( int i = 0; i < levels.length; i++ )
		{
			levels[i] = new Level( documentManager,
					levelDefs[i],
					keyDataType[i],
					attributesDataType[i],
					currentIndex,
					diskIndex[i]);
		}
		for ( int i = 0; i < levels.length; i++ )
		{
			this.levelMap.put( levels[i].name, levels[i] );
		}
		return currentIndex;
	}
	
	/**
	 *