title: What is this spring.jpa.open-in-view=true property in Spring Boot?
body: <p>I saw <code>spring.jpa.open-in-view=true</code> property in Spring Boot documentation for JPA configuration.</p>
  
  <ul>
  <li>Is the <code>true</code> default value for this property if it's not provided at all?;</li>
  <li>What does this really do? I did not find any good explaining for it;</li>
  <li>Does it make you use <code>SessionFactory</code> instead of <code>EntityManagerFactory</code>? If yes, how can I tell it to allow me to use <code>EntityManagerFactory</code> instead?</li>
  </ul>
  
  <p>Thanks!</p>