SQLite 事务保存点问题

Question

我在使用事务的 SQLite 中遇到一个奇怪的错误，我无法弄清楚.... 下面是我的代码：

_connection.RunInTransaction(() =>
                {
                    _connection.UpdateAll(objProposte);
                    foreach (Proposte objProposta in objProposte)
                    {
                        string propostaID = objProposta.PropostaID;
                        List<ProposteDetails> lstProdDet = _connection.Table<ProposteDetails>().Where(x => x.PropostaID == propostaID).ToList();

                        if (lstProdDet != null && lstProdDet.Count() > 0)
                        {
                            //AN UPDATE GIVE ME THE SAME ERROR
                            _connection.DeleteAll(lstProdDet);
                            _connection.InsertAll(lstProdDet);
                        }
                    }
                });

似乎 _connection.UpdateAll(objProposte);工作正常，但是当我尝试在同一事务中做其他事情时，出现以下异常：

System.ArgumentException: savePoint is not valid, and should be the result of a call to SaveTransactionPoint. Parameter name: savePoint
at SQLite.Net.SQLiteConnection.DoSavePointExecute (System.String savePoint, System.String cmd) [0x00063] in <8f2bb39aeff94a30a8628064be9c7efe>:0 at SQLite.Net.SQLiteConnection.Release (System.String savepoint) [0x00000] in <8f2bb39aeff94a30a8628064be9c7efe>:0 at SQLite.Net.SQLiteConnection.RunInTransaction (System.Action action) [0x0001d] in <8f2bb39aeff94a30a8628064be9c7efe>:0 at SQLite.Net.SQLiteConnection.InsertAll (System.Collections.IEnumerable objects, System.Boolean runInTransaction) [0x0001e] in <8f2bb39aeff94a30a8628064be9c7efe>:0

网上看好像和嵌套事务有关，但我的情况不是这样，因为都是在同一个事务中完成的。

谢谢， L-

编辑 28-05-2018 12:16：该配置有效....但应该做与上述相同的事情:(

string my_transaction_point = null;
            try
            {
                my_transaction_point = _connection.SaveTransactionPoint();
                    _connection.UpdateAll(objProposte, runInTransaction: false);
                    foreach (Proposte objProposta in objProposte)
                    {
                        string propostaID = objProposta.PropostaID;
                        List<ProposteDetails> lstProdDet = _connection.Table<ProposteDetails>().Where(x => x.PropostaID == propostaID).ToList();
                        if (lstProdDet != null && lstProdDet.Count() > 0)
                        {
                            _connection.DeleteAll(lstProdDet);
                            _connection.InsertAll(lstProdDet, runInTransaction: false);
                        }
                    }
                _connection.Commit();
            }
            catch (Exception ex)
            {
                _connection.RollbackTo(my_transaction_point);
                throw new Exception("UpdateProposta, " + ex.Message, ex);
            }

Answer 1

.UpdateAll 默认在它自己的事务中运行，您可以通过覆盖默认为 true:

的第二个参数来关闭它

_connection.RunInTransaction(() =>
{
    _connection.UpdateAll(objProposte, false);

    // perform the rest of your CRUD operations
    ~~~
    ~~~
});

SQLite 事务保存点问题

SQLite transaction save Point Issue

c#

sqlite

cross-platform

xamarin.android

xamarin