Hi,

what I would like to accomplish is the following:

1. have autocommit enabled so per default all queries get commited
2. if there is a @Transactional on a method, it overrides the autocommit and encloses all queries into a single transaction, thus overriding the autocommit
3. if there is a @Transactional method that calls other @Transactional annotated methods, the outer most annotation should override the inner annotaions and create a larger transaction, thus annotations also override eachother

I am currently still learning about spring-orm and couldn't find documentation about this and don't have a test project for this yet.

So my questions are:

• What is the default behaviour of transactions in spring?
• If the default differs from my requirement, is there a way to configure my desired behaviour?
• Or is there a totally different best practice for transactions?

--EDIT--

I have the following test-setup:

@javax.persistence.Entity
public class Entity {
  @Id
  @GeneratedValue
  private Integer id;
  private String name;
  public Integer getId() {
    return id;
  }
  public void setId(Integer id) {
    this.id = id;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
}

@Repository
public class Dao {
  @PersistenceContext
  private EntityManager em;
  public void insert(Entity ent) {
    em.persist(ent);
  }
  @SuppressWarnings("unchecked")
  public List<Entity> selectAll() {
    List<Entity> ents = em.createQuery("select e from " + Entity.class.getName() + " e").getResultList();
    return ents;
  }
}

If I have it like this, even with autocommit enabled in hibernate, the insert method does nothing. I have to add @Transactional to the insert or the method calling insert for it to work...

Is there a way to make @Transactional completely optional?