[英]unlimited cursor Mongo DB for java
我正在使用此汇总查询将所有文档都放入纸盘,但是这里的问题是光标受到限制,他大约返回了500个结果。 我尝试了limit(0)
但是不起作用! ,我也尝试使用limit(10000)或limit(20000),但它不起作用,我总是得到500个结果
AggregateIterable<Document> resultMongo = collection.aggregate(Arrays.asList(
Aggregates.match(and(filters)),
Aggregates.group(and(eq(CoverageWarningFieldEnum.DT_EXTRACT.getLabel(), "$" + CoverageWarningFieldEnum.DT_EXTRACT.getLabel())
, eq(CoverageWarningFieldEnum.ID_SUP_NUMBER.getLabel(), "$" + CoverageWarningFieldEnum.ID_SUP_NUMBER.getLabel())
, eq(CoverageWarningFieldEnum.CODE_SUPPLIER_DLPA_SITE.getLabel(), "$" + CoverageWarningFieldEnum.CODE_SUPPLIER_DLPA_SITE.getLabel())
, eq(CoverageWarningFieldEnum.SUP_NAME.getLabel(), "$" + CoverageWarningFieldEnum.SUP_NAME.getLabel())
, eq(CoverageWarningFieldEnum.MLF07_GRPFOU.getLabel(), "$" + CoverageWarningFieldEnum.MLF07_GRPFOU.getLabel()))
, sum("sum_w_ord_unit_ord_min_coverage", "$" + CoverageWarningFieldEnum.W_ORD_UNIT_ORD_MIN_COVERAGE.getLabel())
, sum("sum_w_excess_delivery", "$*" + CoverageWarningFieldEnum.W_EXCESS_DELIVERY.getLabel())
, sum("sum_w_inventory", "$" + CoverageWarningFieldEnum.W_INVENTORY.getLabel())
, sum("sum_w_service_blocking", "$" + CoverageWarningFieldEnum.W_SERVICE_BLOCKING_2.getLabel())
, sum("sum_w_service_blocking_4", "$w" + CoverageWarningFieldEnum.W_SERVICE_BLOCKING_4.getLabel())
, sum("sum_w_coverage_change", "$" + CoverageWarningFieldEnum.W_COVERAGE_CHANGE.getLabel())
, sum("sum_w_pa_supervision", "$" + CoverageWarningFieldEnum.W_PA_SUPERVISION.getLabel())
, sum("sum_val_pn_stock_total_euro", "$" + CoverageWarningFieldEnum.VAL_PN_STOCK_TOTAL_EURO.getLabel())
, sum("sum_val_pn_average_sale_12month_euro", "$" + CoverageWarningFieldEnum.VAL_PN_AVERAGE_SALE_12MONTH_EURO.getLabel())
, sum("sum_score", "$" + CoverageWarningFieldEnum.SCORE.getLabel())),
Aggregates.sort(Sorts.orderBy(Sorts.descending(CoverageWarningFieldEnum.SCORE.getLabel())))
));
你做错了。
聚合是“分组依据”操作。 这就是为什么将结果集分为500组。
这清楚地说明了有关聚合分组的信息https://docs.mongodb.com/manual/aggregation/
如果要加载所有记录,请使用mongo“ find”操作。 https://docs.mongodb.com/manual/reference/method/db.collection.find/
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