Bug 117148 Support Accessibility
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/attribute/impl/AttributeFactoryImpl.java
case AttributePackage.ANGLE_TYPE_OBJECT :
				return convertAngleTypeObjectToString( eDataType, instanceValue );
			case AttributePackage.AXIS_TYPE_OBJECT :
				return convertAxisTypeObjectToString( eDataType, instanceValue );
			case AttributePackage.CHART_DIMENSION_OBJECT :
				return convertChartDimensionObjectToString( eDataType,
						instanceValue );
			case AttributePackage.CHART_TYPE_OBJECT :
				return convertChartTypeObjectToString( eDataType, instanceValue );
			case AttributePackage.DATA_POINT_COMPONENT_TYPE_OBJECT :
				return convertDataPointComponentTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.DATA_TYPE_OBJECT :
				return convertDataTypeObjectToString( eDataType, instanceValue );
			case AttributePackage.DATE_FORMAT_DETAIL_OBJECT :
				return convertDateFormatDetailObjectToString( eDataType,
						instanceValue );
			case AttributePackage.DATE_FORMAT_TYPE_OBJECT :
				return convertDateFormatTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.DIRECTION_OBJECT :
				return convertDirectionObjectToString( eDataType, instanceValue );
			case AttributePackage.GROUPING_UNIT_TYPE_OBJECT :
				return convertGroupingUnitTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.HORIZONTAL_ALIGNMENT_OBJECT :
				return convertHorizontalAlignmentObjectToString( eDataType,
						instanceValue );
			case AttributePackage.ID :
				return convertIDToString( eDataType, instanceValue );