Aggregate()

override object System.Data.Common.StringStorage.Aggregate ( int[] recordNos, AggregateType kind )

inlinevirtual

Reimplemented from System.Data.Common.DataStorage.

Definition at line 15 of file StringStorage.cs.

    {
        switch (kind)
        {
        case AggregateType.Min:
        {
            int num3 = -1;
            int i;
            for (i = 0; i < recordNos.Length; i++)
            {
                if (!IsNull(recordNos[i]))
                {
                    num3 = recordNos[i];
                    break;
                }
            }
            if (num3 >= 0)
            {
                for (i++; i < recordNos.Length; i++)
                {
                    if (!IsNull(recordNos[i]) && Compare(num3, recordNos[i]) > 0)
                    {
                        num3 = recordNos[i];
                    }
                }
                return Get(num3);
            }
            return _nullValue;
        }
        case AggregateType.Max:
        {
            int num2 = -1;
            int i;
            for (i = 0; i < recordNos.Length; i++)
            {
                if (!IsNull(recordNos[i]))
                {
                    num2 = recordNos[i];
                    break;
                }
            }
            if (num2 >= 0)
            {
                for (i++; i < recordNos.Length; i++)
                {
                    if (Compare(num2, recordNos[i]) < 0)
                    {
                        num2 = recordNos[i];
                    }
                }
                return Get(num2);
            }
            return _nullValue;
        }
        case AggregateType.Count:
        {
            int num = 0;
            for (int i = 0; i < recordNos.Length; i++)
            {
                object obj = _values[recordNos[i]];
                if (obj != null)
                {
                    num++;
                }
            }
            return num;
        }
        default:
            throw ExceptionBuilder.AggregateException(kind, _dataType);
        }
    }

References System.Data.Common.DataStorage._dataType, System.Data.Common.DataStorage._nullValue, System.Data.Common.StringStorage._values, System.Data.ExceptionBuilder.AggregateException(), System.Data.Common.StringStorage.Compare(), System.Data.Common.StringStorage.Get(), System.Data.IsNull, and System.obj.