Databases
StackOverflow2013
Postsdbo
POUnderstanding Spring transactions - What happens when a transactional method calls another transactional method?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUnderstanding Spring transactions - What happens when a transactional method calls another transactional method?
    primarykey
    data
    text
    <p>Just to understand the workings of Spring transactions I want to know what happens in the following case where one method marked as <code>@Transactional</code> calls another method marked as <code>@Transactional</code>.</p> <p>Assume a the configuration uses all default settings.</p> <pre><code>@Service("myService") @Transactional public MyService{ public void myServiceMethod(){ myDAO.getSomeDBObjects(); } } @Repository("myDAO") @Transactional public MyDAOWithUsesBeyondMyService{ public void getSomeDBObjects(){...} } </code></pre> <p>Now if I were to enter <code>MyService.myServiceMethod()</code> it would clearly start a transaction. Then, upon drilling into <code>myDAO.getSomeDBObjects()</code> what would happen? Would the fact that a transaction already exist cause no new transaction to be born, or am I creating two transactions here?</p> <p>The documentation (quoted below) on Propagation seems to cover this, but I'd like to verify my understanding, it was a little much for my virgin brain to comprehend all at once.</p> <blockquote> <p><strong>Propagation</strong>: Typically, all code executed within a transaction scope will run in that transaction. However, you have the option of specifying the behavior in the event that a transactional method is executed when a transaction context already exists. For example, code can continue running in the existing transaction (the common case); or the existing transaction can be suspended and a new transaction created. Spring offers all of the transaction propagation options familiar from EJB CMT. To read about the semantics of transaction propagation in Spring, see Section 10.5.7, “Transaction propagation”.</p> </blockquote>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USSean Patrick Floyd
    1. USDavid Parks
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUnderstanding Spring transactions - What happens when a transactional method calls another transactional method?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POUnderstanding Spring transactions - What happens when a transactional method calls another transactional method?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POUnderstanding Spring transactions - What happens when a transactional method calls another transactional method?
      1. USguido
      1. VTFavorite
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload