Question

I m 刚刚从Raven开始,指数I ve制造的指数始终没有指数。我发现拉文服务器上有许多错误,如:

{
    Index: "HomeBlurb/IncludeTotalCosts",
    Error: "Cannot implicitly convert type  double  to  int . An explicit conversion exists (are you missing a cast?)",
    Timestamp: "2012-01-14T15:40:40.8943226Z",
    Document: null
}

指数一的制定就是:

public class HomeBlurb_IncludeTotalCosts : AbstractIndexCreationTask<MPDocument, HomeBlurb_IncludeTotalCosts.ReduceResult>
{
    public class ReduceResult 
    {
        public string Name { get; set; }
        public string Constituency { get; set; }
        public decimal AmountPaid { get; set; }
    }

    public HomeBlurb_IncludeTotalCosts()
    {
        Map = mps => from mp in mps
                            from expense in mp.Expenses
                            select new
                            {
                                mp.Name,
                                mp.Constituency,
                                AmountPaid = expense.AmountPaid ?? 0M
                            };

        Reduce = results => from result in results
                            group result by new { result.Name, result.Constituency } 
                            into g
                            select new
                            {
                                g.Key.Name,
                                g.Key.Constituency,
                                AmountPaid = g.Sum(x => x.AmountPaid)
                            };
    }
}

该指数由Raven(通过Ravenudio)创建,看来是罚款。

我真心要说的是,Im使用的文件并不包含任何双重或ts,而我所储存的唯一数字是小错。

这个问题可能是什么?

Answer 1

问题在于:

              AmountPaid = g.Sum(x => x.AmountPaid)

改为:

              AmountPaid = g.Sum(x => (double)x.AmountPaid)

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