/// <summary>
/// determine whether data is exist
/// </summary>
/// <param name="query">query object</param>
/// <returns>whether data is exist</returns>
public virtual async Task <bool> ExistAsync(IQuery query)
{
var cmd = RdbCommand.CreateNewCommand <T>(OperateType.Exist);
SetCommand(cmd, null);
cmd.MustReturnValueOnSuccess = true;
cmd.Query = query;
cmd.CommandResultType = ExecuteCommandResult.ExecuteScalar;
return(await WorkFactory.QueryAsync(cmd).ConfigureAwait(false));
}
/// <summary>
/// query data list
/// </summary>
/// <param name="query">query object</param>
/// <returns>data list</returns>
async Task <List <T> > QueryListAsync(IQuery query)
{
ICommand cmd = RdbCommand.CreateNewCommand <T>(OperateType.Query);
SetCommand(cmd, null);
cmd.Query = query;
var objList = (await WorkFactory.QueryAsync <T>(cmd).ConfigureAwait(false)).ToList();
return(objList);
}