Hibernate flush() 影響事務

Question

我有以下測試用例：

@Test
fun givenEntity_whenSaved_thenFound() {
    doInHibernate<Unit>(({ this.sessionFactory() }), { session ->
        val entity = getSampleEntity()

        session.persist(entity)
        session.flush()

        val entityFound = session.find(Entity::class.java, entity.id)

        session.refresh(entityFound )
        assertTrue(entityFound == entity)

        session.transaction.rollback()
    })
}

所以我認為session.flush()不會影響我的事務，以便它可以回滾。 但是它確實影響它，我收到以下錯誤：

Transaction not successfully started
java.lang.IllegalStateException: Transaction not successfully started
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:95)
    at org.hibernate.testing.transaction.TransactionUtil.doInHibernate(TransactionUtil.java:301)
    at data.base.EntityTest.givenEntity_whenSaved_thenFound(EntityTest.kt:20)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
    at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:288)
    at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:282)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.lang.Thread.run(Thread.java:834)

這種特定情況的解決方法是這樣，但這仍然不能解釋為什么交易會受到影響。

doInHibernate<Unit>(({ this.sessionFactory() }), { session ->
            val entity = getSampleEntity()

            session.persist(entity)
            assertTrue(session.contains(entity))

        })

Answer 1

所以我不確定，但我認為我的問題是我啟用了自動提交。 所以一個可能的解決方法是：

hibernate.connection.autommit=false