/// <summary>
/// 按时间范围创建Scope，范围错误时，可能为空。
/// </summary>
public List <ContextScope> Scope(DateTime start, DateTime end, bool avoidFutureTime = true)
{
return(ContextScope.Create(_dbConfig.ScopeType, start, end, avoidFutureTime));
//if (scopes.IsNullOrEmpty()) scopes = scopes.NullableAdd(Scope(start));
}
/// <summary>
/// DateTime.Today 在当前ScopeType下的ContextScope。
/// </summary>
public static ContextScope Today(this ShardScopeType scopeType)
{
return(ContextScope.Create(scopeType, DateTime.Today));
}
/// <summary>
/// 按时间创建Scope
/// </summary>
public ContextScope Scope(DateTime date)
{
return(ContextScope.Create(_dbConfig.ScopeType, date));
}