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/document/DocumentObjectUtil.java
return new Double( documentObject.readDouble( ) );
			case DataType.STRING_TYPE :
				return documentObject.readString( );
			case DataType.DATE_TYPE :
				return documentObject.readDate( );
			case DataType.BIGDECIMAL_TYPE :
				return documentObject.readBigDecimal( );
			case DataType.BYTES_TYPE :
				return documentObject.readBytes( );
			case DataType.SQL_DATE_TYPE:
				Date date = documentObject.readDate();
				if (date == null) 
				{
					return null;
				}
				return new java.sql.Date(date.getTime());
			case DataType.SQL_TIME_TYPE :
				Date time = documentObject.readDate();
				if (time == null) 
				{
					return null;
				}
				return new java.sql.Time(time.getTime());
			default :
				assert false;
				return null;
		}
	}
}