private static string SplitDate <T>(T objValue, out long splitIndex, DbLoadBalanceInfo.TableNameRule tnr)
{
splitIndex = 0;
string tableName = tnr.Prefix;
DateTime dateValue = Convert.ToDateTime(objValue);
if (tnr.Format >= 1 && tnr.Format <= 4)
{
string suffix = string.Empty;
switch (tnr.Format)
{
case 1:
suffix = dateValue.ToString("yyyy");
break;
case 2:
suffix = dateValue.ToString("yyyyMM");
break;
case 3:
suffix = dateValue.ToString("yyyyMMdd");
break;
case 4: //当年第几周
int week = new System.Globalization.GregorianCalendar().GetWeekOfYear(dateValue, System.Globalization.CalendarWeekRule.FirstDay, DayOfWeek.Monday);
suffix = dateValue.ToString("yyyy") + week.ToString();
break;
default:
break;
}
if (suffix != string.Empty)
{
tableName = string.Format("{0}_{1}", tnr.Prefix, suffix);
splitIndex = int.Parse(dateValue.ToString("yyyyMMdd"));
}
}
return(tableName);
}