helper.setDataSetMode( this.isDataSetMode );
	public ExpressionProcessor(IResultClass metaData,			IResultIterator resultIterator, DataSetRuntime dataSet,			BaseQuery query ) {		helper = new ExpressionParseHelper(metaData, dataSet.getScriptScope());		helper.setQuery(query);		this.metaData = metaData;		this.query = query;		this.resultIterator = resultIterator;		this.dataSet = dataSet;	}