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/util/DiskIndex.java
{
		documentObject.seek( rootNodeOffset );
		NonLeafNode currentNode = readNonLeafNode( );
		
		if ( !checkValid( currentNode ) )
		{
			throw new DataException( ResourceConstants.OLAPFILE_DATA_ERROR,
					name );
		}
		
		boolean find = false;
		NodeSelection nodeSelection = new NodeSelection( currentNode,
				selections.length );
		for ( int i = 0; i < selections.length; i++ )
		{
			if ( match( currentNode, selections[i] ) )
			{
				nodeSelection.addSelection( i );
				find = true;
			}
		}
		if ( !find )
		{
			return null;
		}
		BufferedStructureArray validNodeList = new BufferedStructureArray( NodeSelection.getCreator( ),
				Math.min( keyCount, Constants.MAX_LIST_BUFFER_SIZE ) );
		validNodeList.add( nodeSelection );
		BufferedStructureArray validSonNode = new BufferedStructureArray( NodeSelection.getCreator( ),
				Math.min( keyCount, Constants.MAX_LIST_BUFFER_SIZE ) );