播放2.2.2 eBean的@Transactional不会在抛出异常时回滚事务

问题描述

似乎将Play Framework 2.2.2与eBean ORM一起使用时，@ play.db.ebean.Transactional引发异常时不回滚事务.

It seems that when using Play Framework 2.2.2 with eBean ORM the @play.db.ebean.Transactionaldoes not rollback transaction when an Exception is thrown.

您中的某人是否了解此问题以及如何解决?

我看到eBean在其avaje-ebeanorm-agent 3.2.2中对此问题有一个BUG. : https://github.com/ebean-orm/avaje-ebeanorm/pull /44 (已在版本avaje-ebeanorm 3.2.3中修复)也播放2.2.2似乎使用avaje-ebeanorm-agent 3.2.2，当我将其更改为更高版本时，Built.scala(3.2.5)出现一些使用过的JPA注释的崩溃(例如，无法识别orphanRemoval)

I saw that eBean has a BUG about that issue in their avaje-ebeanorm-agent 3.2.2. : https://github.com/ebean-orm/avaje-ebeanorm/pull/44 which is fixed in version avaje-ebeanorm 3.2.3 Also play 2.2.2 seems use avaje-ebeanorm-agent 3.2.2 and when I change it to higher version in Built.scala (3.2.5) some crashes with the used JPA annotations appeared (like orphanRemoval is not recognised)

P.S.关于Play 2.1.1的讨论与此类似，播放2.1.1:无法使用ebean orm回滚事务，但未发现使用@Transactional in Action解决该问题的明确方法.

P.S. There is similar discussion with Play 2.1.1 , play 2.1.1: Unable to rollback transaction with ebean orm, but no clear resolving of the issue with using @Transactional in Action is found.

推荐答案

我遇到了类似的问题，但是我仅在播放版本2.3.7中进行了测试.:

I experienced similar problems, however I have only tested with play version 2.3.7.:

我注意到有两个包含事务注释的不同库:@com.avaje.ebean.annotation.Transactional和@play.db.ebean.Transactional.

I noticed that there are two different libs that contain the Transactional-annotation: @com.avaje.ebean.annotation.Transactional and @play.db.ebean.Transactional.

显然，它们每个只能在某种类型的类中工作，并且如果使用不当，将不会执行回滚.这是我通过测试发现的:

Apparently each of them only work in a certain type of classes and when used wrong, no rollback will be performed. This is what I found out by testing:

• @com.avaje.ebean.annotation.Transactional:仅适用于代表模型的类中的方法，即它们具有@javax.persistence.Entity批注.但是，ebean增强中似乎存在一个错误，该错误导致类
• ebean的文档提供了另外两种实现交易的方式，例如您可以使用try/finally块.在我的测试中，这种方式一直很好，并且执行了回滚.
• @play.db.ebean.Transactional:仅适用于操作，即该类是从play.mvc.Controller派生的.我不确定这种行为是否有意，但是有关播放框架的文档只谈论交易性的操作，根本没有提及模型类.

• @com.avaje.ebean.annotation.Transactional:only works for methods in classes that represent a model, i.e. they have the @javax.persistence.Entity annotation. However there seems to be a bug in ebean enhancement, which causes the classes to always recompile although no changes were made
• ebean's documentation gives two other ways of implementing transactions, e.g. you can use a try/finally block. In my tests this way has always worked well and a rollback was performed.
• @play.db.ebean.Transactional: only works for actions, i.e. the class is derived from play.mvc.Controller. I'm not sure whether this behaviour is intended or not, but the documentation of play-framework only talks about transactional actions and doesn't mention model-classes at all.

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