Spring multiple transaction roll back - mysql

Question

I have a requirement wherein I have to insert into 3 separate tables through 3 DAO classes.
ClassADAO
ClassBDAO
ClassCDAO
I want to have a single transaction for all the three classes so that if one insertion fails I want to roll back the complete transaction that is inserted through previous classes.
I have my configured xml as shown below
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource"
id="dataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/mydb"></property>
<property name="username" value="******"></property>
<property name="password" value="********"></property>
</bean>
In controller annotated as follows
#Transactional(rollbackFor = { Exception.class }, propagation = Propagation.REQUIRED)
But still if ClassCDAO fails, I can c insertions in my db from ClassA and ClassB
Controller:
#Controller
#Transactional(rollbackFor = { Exception.class }, propagation = Propagation.REQUIRED)
public class MyController{
#Autowired
private MyBusinessLayer mybusinessLayer;
#RequestMapping(value = "/register.htm", method = RequestMethod.POST)
public String saveRegistration(
final #ModelAttribute("registration") #Valid Registration registration,
final BindingResult result, final Model model) {
if (result.hasErrors()) {
return "myPage";
} else {
mybusinessLayer.saveRegistration(registration);
}
return "myPage";
}
}
My Business Layer:
#Component
public class MyBusinessLayer{
#Autowired
private ClassA classA;
#Autowired
private ClassB classB;
#Autowired
private ClassC classC;
public void saveRegistration(Registration registration) {
Company company = RegistrationHelper.buildCompany(registration);
classA.saveCompany(company);
Contact contact = RegistrationHelper.buildContact(registration, company.getCompanyId());
classB.saveContact(contact);
User user = RegistrationHelper.buildUser(registration, contact.getCompanyID(),
contact.getContactID());
classC.saveUser(user);
}
}
ClassADAO:
#Component
public class CompanyDAOImpl implements CompanyDAO {
#Autowired
private NamedParameterJdbcTemplate namedParameterJdbcTemplate;
public void setDataSource(DataSource dataSource) {
this.namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(dataSource);
}
#Override
public void saveCompany(Company company) {
String insertCompanySQL = //insert statement;
//code here
SqlParameterSource paramSource = new MapSqlParameterSource(bind);
namedParameterJdbcTemplate.update(insertCompanySQL, paramSource);
}
}
ClassBDAO and ClassCDAO are also as shown above.

Answer 1

Move your #Transactional annotation to MyBusinessLayer class. Unless you have your DataSource configured as autocommit, your code seems correct.