Bug 202254 Exception is thrown when category values are null and type of X axis is set to DateTime
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/data/impl/DataFactoryImpl.java
* @generated
	 */
	public EObject create( EClass eClass )
	{
		switch ( eClass.getClassifierID( ) )
		{
			case DataPackage.ACTION :
				return createAction( );
			case DataPackage.BASE_SAMPLE_DATA :
				return createBaseSampleData( );
			case DataPackage.BUBBLE_DATA_SET :
				return createBubbleDataSet( );
			case DataPackage.DATA_ELEMENT :
				return createDataElement( );
			case DataPackage.DATA_SET :
				return createDataSet( );
			case DataPackage.DATE_TIME_DATA_ELEMENT :
				return createDateTimeDataElement( );
			case DataPackage.DATE_TIME_DATA_SET :
				return createDateTimeDataSet( );
			case DataPackage.DIFFERENCE_DATA_SET :
				return createDifferenceDataSet( );
			case DataPackage.GANTT_DATA_SET :
				return createGanttDataSet( );
			case DataPackage.NUMBER_DATA_ELEMENT :
				return createNumberDataElement( );
			case DataPackage.NUMBER_DATA_SET :
				return createNumberDataSet( );
			case DataPackage.ORTHOGONAL_SAMPLE_DATA :
				return createOrthogonalSampleData( );