count method

@override Future<DbResult<int>> count(String table, DbFilter filter, { DbCountOptions? countOptions, })

统计记录数量

• DbResult.success 统计结果的数值 >=0 时为true
• DbResult.rescode 统计结果的数值 或 异常标识-1

Implementation

@override
Future<DbResult<int>> count(String table, DbFilter filter, {DbCountOptions? countOptions}) async {
  try {
    final result = await _handle.count(table, filter, countOptions: countOptions);
    (result.success ? logDebug : logWarn)(['count =>', table, filter, countOptions, result]);
    return result;
  } catch (error, stack) {
    logError(['count =>', table, filter, countOptions, error, '\n', stack]);
    return DbResult(success: false, rescode: -1, message: error.toString());
  }
}