Bug 117148 Support Accessibility
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/attribute/impl/AttributeFactoryImpl.java
case AttributePackage.INTERSECTION_TYPE_OBJECT :
				return convertIntersectionTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.LEADER_LINE_STYLE_OBJECT :
				return convertLeaderLineStyleObjectToString( eDataType,
						instanceValue );
			case AttributePackage.LEGEND_BEHAVIOR_TYPE_OBJECT :
				return convertLegendBehaviorTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.LEGEND_ITEM_TYPE_OBJECT :
				return convertLegendItemTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.LINE_DECORATOR_OBJECT :
				return convertLineDecoratorObjectToString( eDataType,
						instanceValue );
			case AttributePackage.LINE_STYLE_OBJECT :
				return convertLineStyleObjectToString( eDataType, instanceValue );
			case AttributePackage.MARKER_TYPE_OBJECT :
				return convertMarkerTypeObjectToString( eDataType,
						instanceValue );
			case AttributePackage.ORIENTATION_OBJECT :
				return convertOrientationObjectToString( eDataType,
						instanceValue );
			case AttributePackage.PERCENTAGE :
				return convertPercentageToString( eDataType, instanceValue );
			case AttributePackage.PERCENTAGE_OBJECT :
				return convertPercentageObjectToString( eDataType,
						instanceValue );
			case AttributePackage.POSITION_OBJECT :
				return convertPositionObjectToString( eDataType, instanceValue );