访问事务以提交或回滚的首选方式是什么？

发布于 2024-10-21 02:16:36 字数 709 浏览 2 评论 0原文

我了解事务如何工作以及一切按预期运行，但我不喜欢访问连接以提交或回滚事务的方式。

我有 3 个服务类可以访问同一个单例连接对象。我想将这三件事包装在一个事务中，所以我这样做：

try {
  $service1 = new ServiceOne;
  $service2 = new ServiceTwo;
  $service3 = new ServiceThree;

  $service1->insertRec1($data);
  $service2->deleteRec2($data);
  $service3->updateRec3($data);

  $service1->getSingletonConnection()->commit();
}
catch(Exception $ex) {
  $service1->getSingletonConnection()->rollback();
}

getSingletonConnection 返回的连接对象只是 oci8 连接的包装器，提交是 oci_commit ；回滚是oci_rollback。

正如我所说，这是可行的，因为它们都访问相同的连接，但通过任意服务对象访问连接感觉是错误的。另外，我的应用程序中使用了两个不同的数据库，因此我需要确保检索并提交正确的数据库......但不确定是否有任何解决方法。

有没有更好的方法来处理交易？

原文

I understand how transactions work and everything functions as expected, but I do not like the way I access connections to commit or rollback transactions.

I have 3 service classes that can access the same singleton connection object. I want to wrap these three things in a single transaction, so I do this:

try {
  $service1 = new ServiceOne;
  $service2 = new ServiceTwo;
  $service3 = new ServiceThree;

  $service1->insertRec1($data);
  $service2->deleteRec2($data);
  $service3->updateRec3($data);

  $service1->getSingletonConnection()->commit();
}
catch(Exception $ex) {
  $service1->getSingletonConnection()->rollback();
}

The connection object returned by getSingletonConnection is just a wrapper around the oci8 connection, and committing is oci_commit; rollback is oci_rollback.

As I said, this works because they are all accessing the same connection, but it feels wrong to access the connection through any arbitrary service object. Also, there are two different databases used in my app so I need to be sure that I retrieve and commit the correct one... not sure if there is any way around that though.

Is there a better way to handle transactions?

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橘香 2024-10-28 02:16:37

感觉访问有问题
通过任意连接
服务对象。

我100%同意你的观点。

在我看来，如果每个服务仅构成数据库事务的一部分，那么该服务就不能直接负责确定要使用的数据库会话。您应该在定义事务的代码级别选择和管理连接。

因此，您当前的代码将被修改为：

try {
  $conn = getSingletonConnection();
  $service1 = new ServiceOne($conn);
  $service2 = new ServiceTwo($conn);
  $service3 = new ServiceThree($conn);

  $service1->insertRec1($data);
  $service2->deleteRec2($data);
  $service3->updateRec3($data);

  $conn->commit();
}
catch(Exception $ex) {
  $conn->rollback();
}

看起来这会简化处理您的两个数据库问题，因为只有一个地方可以决定使用哪个连接，并且您将直接引用该连接，直到您结束交易。

如果您想从单例连接扩展到连接池，这将是我能想到的保证所有三个服务调用使用相同连接的唯一方法。

it feels wrong to access the
connection through any arbitrary
service object.

I agree with you 100%.

It seems to me that if each service only makes up part of a database transaction, then the service cannot be directly responsible for determining the database session to use. You should select and manage the connection at the level of code that defines the transaction.

So your current code would be modified to something like:

try {
  $conn = getSingletonConnection();
  $service1 = new ServiceOne($conn);
  $service2 = new ServiceTwo($conn);
  $service3 = new ServiceThree($conn);

  $service1->insertRec1($data);
  $service2->deleteRec2($data);
  $service3->updateRec3($data);

  $conn->commit();
}
catch(Exception $ex) {
  $conn->rollback();
}

It seems like this would simplify dealing with your two-database issue, since there would only be one place to decide which connection to use, and you would hold a direct reference to that connection until you end the transaction.

If you wanted to expand from a singleton connection to a connection pool, this would be the only way I can think of to guarantee that all three service calls used the same connection.

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