Understanding Spring Transaction boundaries

Question

I am trying to clear my doubts w.r.t. Spring Transaction boundaries with following example.

@Transactional(propagation=Propagation.REQUIRES_NEW)
public void          


        

Answer 1

test() should probably be SUPPORTS, so if there is an existing TX, it will be propagated to test1(). test1() should be REQUIRED so your insert actually commits. test2() should be REQUIRES_NEW.

Answer 2

Transaction attributes are applied to external calls , not internal calls made by bean method such as your case. If you want transaction boundaries applied to your call, you should inject your bean instance such as below. But I think that it is not good practice, I would not recommend.. The right way to accomplish is to define another spring bean and associate it with your previous bean and put your test method to this new bean.

@Service("yourBean")
@Transactional
public class YourBeanClass implement IYourBean {

   @Resource(name="yourBean")
    IYourBean yourBean;

        @Transactional(propagation=Propagation.REQUIRED)
    public void test() {    
        yourBean.test1();
        yourBean.test2();       
    }

    @Transactional(propagation=Propagation.REQUIRED)
    public void test1() {
        this.jdbcTemplate.execute("INSERT INTO TEST VALUES('T', 'C2', 0, 1)");      
    }

    @Transactional(propagation=Propagation.NOT_SUPPORTED)
    public void test2() {
        System.out.println(this.jdbcTemplate.queryForInt("select count(*) from TEST"));         
    }

}

Alternative and better way to solve this particular problem ;

 @Service("otherBean")
    @Transactional
    public class OtherBeanClass implement IOtherBean {

     @Autowired
     IYourBean yourBean;

      @Transactional(propagation=Propagation.REQUIRED)
        public void test() {    
            yourBean.test1();
            yourBean.test2();       
        }

   }



    @Service("yourBean")
    @Transactional
    public class YourBeanClass implement IYourBean {



        @Transactional(propagation=Propagation.REQUIRED)
        public void test1() {
            this.jdbcTemplate.execute("INSERT INTO TEST VALUES('T', 'C2', 0, 1)");      
        }

        @Transactional(propagation=Propagation.NOT_SUPPORTED)
        public void test2() {
            System.out.println(this.jdbcTemplate.queryForInt("select count(*) from TEST"));         
        }
}