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
private IndexKey readKeyObject( ) throws IOException
	{
		IndexKey keyObject = new IndexKey( );
		keyObject.dimensionPos = documentObject.readInt( );
		
		keyObject.key = DocumentObjectUtil.readValue( documentObject,
				keyDataType );
		keyObject.offset = documentObject.readInt( );
		
		return keyObject;
	}
	/**
	 * 
	 * @throws IOException
	 * @throws DataException 
	 */
	private void createDocumentObject( ) throws IOException, DataException
	{
		documentObject = documentManager.createDocumentObject( name );
		if ( documentObject == null )
		{
			
			
			
		}
		offsetDocumentObject = documentManager.createDocumentObject( getOffsetDocName( name ) );
		if ( offsetDocumentObject == null )
		{