I am having a strange problem with a custom jpa-entity listener I've created in a spring boot application. I'm trying to use Springs @Configurable mechanism to configure the EntityListener (as seen in Springs AuditingEntityListener) but Spring refuses to recognize my Listener as soon as it is used in the @EntityListeners-Annotation on a jpa entity. if it is not configured on a jpa entity, the Listener gets wired/configured by Spring as it should.
I've created an example project with a junit-test to demonstrate the problem: https://github.com/chrisi/aopconfig/find/master
@SpringBootApplication
@EnableSpringConfigured
@EnableLoadTimeWeaving
public class Application {
public static void main(String[] args) throws Exception {
SpringApplication.run(Application.class, args);
}
}
The EntityListener:
/**
* This bean will NOT be instanciated by Spring but it should be configured by Spring
* because of the {@link Configurable}-Annotation.
* <p>
* The configuration only works if the <code>UnmanagedBean</code> is not used as an <code>EntityListener</code>
* via the {@link javax.persistence.EntityListeners}-Annotation.
*
* @see FooEntity
*/
@Configurable
public class UnmanagedBean {
@Autowired
private ManagedBean bean;
public int getValue() {
return bean.getValue();
}
}
The Bean I want to be injected in the EntityListener/UnmanagedBean:
/**
* This bean will be instanciated/managed by Spring and will be injected into the
* {@link UnmanagedBean} in the case the <code>UnmanagedBean</code> is not used as an JPA-EntityListener.
*/
@Component
@Data
public class ManagedBean {
private int value = 42;
}
The Entity where the Listener should be used:
/**
* This simple entity's only purpose is to demonstrate that as soon as
* it is annotated with <code>@EntityListeners({UnmanagedBean.class})</code>
* springs configurable mechanism will not longer work on the {@link UnmanagedBean}
* and therefore the <code>ConfigurableTest.testConfigureUnmanagedBean()</code> fails.
*/
@Entity
@EntityListeners({UnmanagedBean.class}) // uncomment to make the test fail
public class FooEntity {
@Id
private Long id;
private String bar;
}
And finally the test that shows that the wiring is not working as soon as the Listener is used:
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
public class ConfigurableTest {
/**
* This test checks if the ManagedBean was injected into the UnmanagedBean
* by Spring after it was created with <code>new</code>
*/
@Test
public void testConfigureUnmanagedBean() {
UnmanagedBean edo = new UnmanagedBean();
int val = edo.getValue();
Assert.assertEquals(42, val);
}
}
The junit-test (the wiring of the EntityListener/ManagedBean) fails as soon as
the annotation @EntityListeners({UnmanagedBean.class}) in FooEntity is activated.
Is this a bug or did I miss something else?
In order to run the test you have to use -javaagent:spring-instrument-4.1.6.RELEASE.jar on the commandline an provide the jar file in the working directory.
This is the "condensed" version of a question I asked earlier: @Configurable not recognized in SpringBoot Application