public T SelectOne(DBColumn column, object val)
{
var value = column.ParseValue(val);
if (column.Index != null)
{
return(column.Index.SelectOne <T>(value));
}
return(Select(column, CompareType.Equal, value).FirstOrDefault());
}
public async ValueTask <T> LoadByKeyAsync(object key, DBColumn column, DBLoadParam param = DBLoadParam.Load, IEnumerable <DBColumn> cols = null, DBTransaction transaction = null)
{
object val = column?.ParseValue(key);
if (val == null || column == null)
{
return(null);
}
T row = SelectOne(column, key) as T;
if (row == null && (param & DBLoadParam.Load) == DBLoadParam.Load)
{
row = await LoadItemAsync(val, column, param, cols, transaction);
}
return(row);
}
