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
* 
	 * @param b
	 * @return
	 */
	private static String toString( boolean[] b )
	{
		StringBuffer buffer = new StringBuffer( );
		for ( int i = 0; i < b.length; i++ )
		{
			if ( b[i] )
			{
				buffer.append( '1' );
			}
			else
			{
				buffer.append( '0' );
			}
		}
		return buffer.toString( );
	}
	/**
	 * 
	 * @return
	 */
	public static IStructureCreator getCreator( )
	{
		return new NodeSelectionCreator( );
	}
}
class NodeSelectionCreator implements IStructureCreator