Question

需要按日期范围对多维数据集进行切片。将数据放入多维数据集后，如何传递开始/结束日期以限制切片？

//define full data set
            var allRows = (from c in newContext.MCrmOpportunity
                           orderby c.CloseDate
                           select c)
                          .ToList();

            //define cube pivot
            var cubeData = new PivotData(
                new[] { "CloseDate" },
                new SumAggregatorFactory("Amount"),
                true);

            //process data into cube structure
            cubeData.ProcessData(allRows.AsEnumerable(), new ObjectMember().GetValue);

            var sq = new SliceQuery(cubeData).Where ???????????

            var sc = sq.Execute();
            return sc;

Answer 1

为此，请使用此SliceQuery.Where(string dimension, Func predicate)重载：

DateTime startDt;  // range start
DateTime endDt;  // range end
var sq = new SliceQuery(cubeData).Where("CloseDate", 
            d => (DateTime)d >= startDt && (DateTime)d <= endDt );

（我假设'CloseDate'维度类型为DateTime；如果没有相应地更改对'd'的处理，则为

NReco过滤器多维数据集基于日期范围

1 个答案: