title: @Transactional on @PostConstruct method
body: <p>I want to read <strong>text data fixtures</strong> (CSV files) at the start on my application and put it in my database.</p>
  
  <p>For that, I have created a <strong>PopulationService</strong> with an initialization method (<strong>@PostConstruct</strong> annotation).</p>
  
  <p>I also want them to be executed in a single transaction, and hence I added <strong>@Transactional</strong> on the same method.</p>
  
  <p>However, the <strong>@Transactional</strong> seems to be ignored :
  The transaction is started / stopped at my low level DAO methods.</p>
  
  <p>Do I need to manage the transaction manually then ?</p>