@Override ColumnStatisticsObj generate() { DateColumnStatsData dateData = new DateColumnStatsData(genNumNulls(), genNumDvs()); dateData.setLowValue(genLowValue()); dateData.setHighValue(genHighValue()); ColumnStatisticsData data = new ColumnStatisticsData(); data.setDateStats(dateData); return new ColumnStatisticsObj(colName, colType, data); }