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Is it possible to have PROPAGATION_NESTED in @Transactional() with JPA using postgres? I am getting:
org.springframework.transaction.NestedTransactionNotSupportedException:
JpaDialect does not support savepoints - check your JPA provider's capabilities
I tried:
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory()
.getObject());
transactionManager.setNestedTransactionAllowed(true);
return transactionManager;
}
But with no success.
373
Not all transaction managers support nested transactions. Spring supports this out of the box only with the JDBC DataSourceTransactionManager, which is what we'll cover.
The @Transactional annotation is the metadata that specifies the semantics of the transactions on a method. We have two ways to rollback a transaction: declarative and programmatic. In the declarative approach, we annotate the methods with the @Transactional annotation.
No. It doesn't flush data directly to a database until and unless we explicitly call flush and commit method. It's flush directly flush data to a database. It doesn't flush data directly to a database, therefore, changes will not be visible outside the transaction unless we explicitly call commit() in this transaction.
I am assuming that you are using Hibernate. NESTED transactions is not possible with Hibernate.
In the following code excerpt, spring sets savePointManager. But there is no class implementing SavepointManager in Hibernate.
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