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 selectionNumber
	 */
	NodeSelection( NonLeafNode node, int selectionNumber )
	{
		this.node = node;
		selectionMark = new boolean[selectionNumber];
	}
	/**
	 * 
	 * @param selectionIndex
	 */
	void addSelection( int selectionIndex )
	{
		selectionMark[selectionIndex] = true;;
	}
	/**
	 * 
	 */
	public Object[] getFieldValues( )
	{
		Object[][] objects = new Object[3][];
		objects[0] = new Object[3];
		objects[0][0] = new Integer( node.numberOfSon );
		objects[0][1] = new Integer( node.offset );
		objects[0][2] = toString( selectionMark );;
		objects[1] = node.maxKeyValue;
		objects[2] = node.minKeyValue;
		return ObjectArrayUtil.convert( objects );
	}
	/**