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
documentObject.writeString( ( (String) value ) );
				break;
			case DataType.DATE_TYPE :
				documentObject.writeDate( ( (Date) value ) );
				break;
			case DataType.BIGDECIMAL_TYPE :
				documentObject.writeBigDecimal( ( (BigDecimal) value ) );
				break;
			case DataType.BYTES_TYPE :
				documentObject.writeBytes( ( (Bytes) value ) );
				break;
			case DataType.SQL_DATE_TYPE :
				documentObject.writeDate( ( (java.sql.Date) value ) );
				break;
			case DataType.SQL_TIME_TYPE :
				documentObject.writeDate( ( (java.sql.Time) value ) );
				break;
			default :
				assert false;
				break;
		}
	}
	
	/**
	 * 
	 * @param documentObject
	 * @param dataType
	 * @return
	 * @throws IOException
	 */