Bug 210507 Enhance Report engine to support multiple view
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/ir/EngineIRReader.java
int rowSpan = IOUtil.readInt( in );
				cell.setRowSpan( rowSpan );
				break;
			case FIELD_DROP :
				String drop = IOUtil.readString( in );
				cell.setDrop( drop );
				break;
			case FIELD_DISPLAY_GROUP_ICON :
				boolean displayGroupIcon = IOUtil.readBool( in );
				cell.setDisplayGroupIcon( displayGroupIcon );
				break;
			default :
				readReportItemField( in, cell, fieldType );
		}
	}
	protected void readFreeForm( DataInputStream in, FreeFormItemDesign freeForm )
			throws IOException
	{
		while ( in.available( ) > 0 )
		{
			short fieldType = IOUtil.readShort( in );
			readFreeFormField( in, freeForm, fieldType );
		}
	}
	protected void readFreeFormField( DataInputStream in,
			FreeFormItemDesign freeForm, short fieldType ) throws IOException
	{
		readReportItemField( in, freeForm, fieldType );
	}
	protected void readLabel( DataInputStream in, LabelItemDesign label )