/// <summary>
/// 得到年得所以分片
/// </summary>
/// <returns></returns>
protected virtual IList <ShardingInfo> GetAllYearShardings()
{
var maxTableIndex = GetMaxTableIndex();
var shardings = new List <ShardingInfo>();
var maxDate = DateTime.Parse(maxTableIndex.Insert(4, "-").Insert(7, "-").Insert(10, " "));
var curDate = DateTime.Parse(TableIndex.Insert(4, "-").Insert(7, "-").Insert(10, " "));
var i = 1;
while (curDate < maxDate)
{
var sharding = new ShardingInfo
{
GetDataBase = GetQueryDataBaseIndex(i),
SetDataBase = GetSaveDataBaseIndex(i),
IsWrite = IsWrite,
MaxTableIndex = MaxTableIndex,
TableStep = TableStep,
TableStepType = TableStepType
};
sharding.TableIndex = curDate.ToString("yyyy");
curDate = curDate.AddYears(TableStep);
shardings.Add(sharding);
i++;
}
return(shardings);
}
/// <summary>
/// 得到最大步长
/// </summary>
/// <returns></returns>
public virtual int GetTableMaxStep()
{
var maxTableIndex = GetMaxTableIndex();
switch (TableStepType)
{
case TableStepType.Value:
return(int.Parse(maxTableIndex));
case TableStepType.Hour:
{
var maxDate = DateTime.Parse(maxTableIndex.Insert(4, "-").Insert(7, "-").Insert(10, " "));
var curDate = DateTime.Parse(TableIndex.Insert(4, "-").Insert(7, "-").Insert(10, " "));
return((int)(maxDate - curDate).TotalHours + 1);
}
case TableStepType.Day:
{
var maxDate = DateTime.Parse(maxTableIndex.Insert(4, "-").Insert(7, "-"));
var curDate = DateTime.Parse(TableIndex.Insert(4, "-").Insert(7, "-"));
return((int)(maxDate - curDate).TotalDays);
}
case TableStepType.Month:
{
var maxDate = DateTime.Parse(maxTableIndex.Insert(4, "-"));
var curDate = DateTime.Parse(TableIndex.Insert(4, "-"));
var step = (maxDate.Year - curDate.Year) * 12 + (maxDate.Month - curDate.Month);
return(step + 1);
}
case TableStepType.Year:
{
var maxDate = DateTime.Parse(maxTableIndex.Insert(4, "-"));
var curDate = DateTime.Parse(TableIndex.Insert(4, "-"));
return(maxDate.Year - curDate.Year + 1);
}
}
return(-1);
}
