Spring Data MongoTemplate not throwing DataAccessException - spring-data

Question

I am trying to learn MongoDB and in the same time write a simple REST application using Spring framework.
I have a simple model:
#Document
public class Permission extends documentBase{
#Indexed(unique = true)
private String name;
public Permission(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Then I have a simple DAO:
#Repository
#Transactional
#Profile({"production","repositoryTest","mongoIntegrationTest"})
public class DaoImpl implements DAO {
#Autowired
protected MongoTemplate mongoTemplate;
public <T> T addObject(T object) {
mongoTemplate.insert(object);
return object;
}
The I have my integration tests:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = { "classpath:mvc-dispatcher-servlet.xml", classpath:IntegrationContext.xml"},loader = TestXmlContextLoader.class)
#ActiveProfiles("mongoIntegrationTest")
public class RepositoryIntegrationTest extends AccountTestBase{
#Autowired DAO repository;
#Autowired WebApplicationContext wac;
#Test
public void AddPermission() {
Permission permission_1 = new Permission("test");
Permission permission_2 = new Permission("test");
repository.addObject(permission_1);
repository.addObject(permission_2);
}
}
My configuration:
<!-- MongoDB host -->
<mongo:mongo host="${mongo.host.name}" port="${mongo.host.port}"/>
<!-- Template for performing MongoDB operations -->
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"
c:mongo-ref="mongo" c:databaseName="${mongo.db.name}"/>
I am expecting that, on adding "permission_2" their would be a exception thrown from MongoDB, which would be translated by Spring,, and catched as a DataAccessException in the DAO.
Looking at the log files from MongoDb I can see that a duplicated exception is thrown but it never reaches my DAO.
So,, I guess I am doing something wrong,,, but at the moment,, I am blind to my own misstakes.
//lg

Answer 1

Make sure you configure the WriteConcern of the MongoTemplate to something non-default (e.g. WriteConcern.SAFE). By default MongoDB is in fire-and-forget mode and does not throw exceptions on index violations or server errors in general.

Answer 2

Still struggling with this.
Finnally I succeded to get the exeption translation working. MongoDb throws a exception which is translated to Spring Data exception.
Now I am stuck with another problem.
My DAO shown above has also the following code:
#ExceptionHandler(DataAccessException.class)
public void handleDataAccessException(DataAccessException ex) {
// For debug only
DataAccessException test = ex;
test.printStackTrace();
}
I was expecting this code to catch the exception thrown,, but this is not the case.
Why not?
//lasse