Custom platform transaction manager in spring - spring

Question

I'm trying to implement custom transactional cache in a spring boot application. I've created my own implementation of AbstractPlatformTransactionManager and some unit tests, which show transactions are working as expected. However the real application ignores my transaction manager - it`s methods are never called. What I'm doing wrong? Thank you.
Transaction manager implementation:
#Component
public class CacheTransactionManager extends AbstractPlatformTransactionManager{
#Override
protected Object doGetTransaction() throws TransactionException {
...
}
...
}
Cache transaction configuration:
#Configuration
#EnableTransactionManagement(mode = AdviceMode.ASPECTJ)
public class CacheTransactionConfiguration {
#Bean(name = "cacheTransactionManager")
public PlatformTransactionManager cacheTransactionManager() {
return new CacheTransactionManager();
}
}
Custom transactional annotation (I've tried also without this, but no difference):
#Target({ElementType.METHOD, ElementType.TYPE})
#Retention(RetentionPolicy.RUNTIME)
#Transactional(value = "cacheTransactionManager", rollbackFor = Exception.class)
public #interface CacheTransactional {
}
Cache service:
#Component
public class CacheService {
#CacheTransactional
public void add(Object o){
...
}
}
Working JUnit test:
#RunWith(SpringJUnit4ClassRunner.class)
#SpringApplicationConfiguration(classes = TestApplication.class)
#Configuration
#EntityScan(...)
#IntegrationTest
#TransactionConfiguration(defaultRollback = false)
public class CacheTransactionManagerTest {
#Autowired
private CacheService cacheService;
#Test
#CacheTransactional
public void transactionTest(){
cacheService.add(new Object());
}
}
Not working wicket application main class (ignores cacheTransactionManager):
#Configuration("MyApplication")
#EnableAutoConfiguration
#EntityScan(...)
#EnableJpaRepositories(...)
#EnableTransactionManagement(mode = AdviceMode.ASPECTJ)
#ComponentScan(...)
#ImportResource({...})
public class MyApplication extends AuthenticatedWebApplication {
...
}
My env: Java 8, Spring Boot 1.2.1, Spring 4.1.4, Spring data JPA 1.7.2, Hibernate 4.3.7, Apache Tomcat 8.0.15, Wicket 6.17.0

Answer 1

I found out some new facts:
when I remove AdviceMode.ASPECTJ from #EnableTransactionManagement on CacheTransactionConfiguration, transactions begin to work, but propagation of transaction is ignored - nested call from one #CacheTransactional method to another #CacheTransactional methods always creates new transaction. Same behavior in JUnit test and real application.
when AdviceMode.ASPECTJ is on CacheTransactionConfiguration setted, but I remove #CacheTransactional annotation from junit test, transaction stops working also in juint (in test body is a #CacheTransaction method called, so there should be a transaction created).
application log contains this entry:
o.s.c.a.ConfigurationClassBeanDefinitionReader isOverriddenByExistingDefinition:290 - Skipping bean definition for [BeanMethod:name=cacheTransactionManager,declaringClass=x.y.z.CacheTransactionConfiguration]: a definition for bean 'cacheTransactionManager' already exists. This top-level bean definition is considered as an override.
So I can get this working, but without propagation...

Answer 2

For propagation, you need to tell Spring's #Transactional what propagation mode to apply. You can define several tx annotations, each inherit from #Transactional, but with a different propagation mode.