Bug 210507 Enhance Report engine to support multiple view
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/ir/EngineIRReader.java
case DATA_DESIGN :
			{
				DataItemDesign design = new DataItemDesign( );
				readData( dis, design );
				return design;
			}
			case MULTI_LINE_DESIGN :
			{
				DynamicTextItemDesign design = new DynamicTextItemDesign( );
				readDynamicText( dis, design );
				return design;
			}
			case IMAGE_DESIGN :
			{
				ImageItemDesign design = new ImageItemDesign( );
				readImage( dis, design );
				return design;
			}
			case TEMPLATE_DESIGN :
			{
				TemplateDesign design = new TemplateDesign( );
				readTemplate( dis, design );
				return design;
			}
			case EXTENDED_DESIGN :
			{
				ExtendedItemDesign design = new ExtendedItemDesign( );
				readExtended( dis, design );
				if ( version >= ENGINE_IR_VERSION_3 )
				{