Aggregate()

override object System.Data.Common.DateTimeStorage.Aggregate ( int[] records, AggregateType kind )

inlinevirtual

Reimplemented from System.Data.Common.DataStorage.

Definition at line 18 of file DateTimeStorage.cs.

    {
        bool flag = false;
        try
        {
            switch (kind)
            {
            case AggregateType.Min:
            {
                DateTime dateTime2 = DateTime.MaxValue;
                foreach (int num3 in records)
                {
                    if (HasValue(num3))
                    {
                        dateTime2 = ((DateTime.Compare(_values[num3], dateTime2) < 0) ? _values[num3] : dateTime2);
                        flag = true;
                    }
                }
                if (flag)
                {
                    return dateTime2;
                }
                return _nullValue;
            }
            case AggregateType.Max:
            {
                DateTime dateTime = DateTime.MinValue;
                foreach (int num2 in records)
                {
                    if (HasValue(num2))
                    {
                        dateTime = ((DateTime.Compare(_values[num2], dateTime) >= 0) ? _values[num2] : dateTime);
                        flag = true;
                    }
                }
                if (flag)
                {
                    return dateTime;
                }
                return _nullValue;
            }
            case AggregateType.First:
                if (records.Length != 0)
                {
                    return _values[records[0]];
                }
                return null;
            case AggregateType.Count:
            {
                int num = 0;
                for (int i = 0; i < records.Length; i++)
                {
                    if (HasValue(records[i]))
                    {
                        num++;
                    }
                }
                return num;
            }
            }
        }
        catch (OverflowException)
        {
            throw ExprException.Overflow(typeof(DateTime));
        }
        throw ExceptionBuilder.AggregateException(kind, _dataType);
    }

References System.Data.Common.DataStorage._dataType, System.Data.Common.DataStorage._nullValue, System.Data.Common.DateTimeStorage._values, System.Data.ExceptionBuilder.AggregateException(), System.DateTime.Compare(), System.Xml.Dictionary, System.Data.Common.DataStorage.HasValue(), System.DateTime.MaxValue, System.DateTime.MinValue, and System.Data.ExprException.Overflow().