Bug 210507 Enhance Report engine to support multiple view
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/ir/EngineIRReader.java
boolean suppressDuplicate = IOUtil.readBool( in );
				column.setSuppressDuplicate( suppressDuplicate );
				break;
			case FIELD_VISIBILITY :
				VisibilityDesign visibility = readVisibility( in );
				column.setVisibility( visibility );
				break;
			case FIELD_HAS_DATA_ITEMS_IN_DETAIL :
				boolean hasDataItemsInDetail = IOUtil.readBool( in );
				column.setHasDataItemsInDetail( hasDataItemsInDetail );
				break;
			default :
				readStyledElementField( in, column, fieldType );
		}
	}
	protected void readRow( DataInputStream in, RowDesign row )
			throws IOException
	{
		while ( in.available( ) > 0 )
		{
			short fieldType = IOUtil.readShort( in );
			readRowField( in, row, fieldType );
		}
	}
	protected void readRowField( DataInputStream in, RowDesign row,
			short fieldType ) throws IOException
	{
		switch ( fieldType )
		{
			case FIELD_IS_START_OF_GROUP :