Package com.jalios.jcms.db

Interface Transaction<T>

  • Type Parameters:
    T - type of the result object
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface Transaction<T>
    Interface for Hibernate code. To be used with HibernateUtil.executeTransaction(Transaction), often as anonymous classes within a method implementation.

    Examples: 

     // Example with id as result
 String myDataId = HibernateUtil.executeTransaction(session -> {
   MyData myData = new MyData();
   myData.setTitle("new title");
   [...]
   myData.performCreate(admin);
   return myData.getId();
 });
 
 // Example with domain object as result
 // /!\ DO NOT alter or modify the returned object as it belongs to a closed Hibernate session, this approach is not recommended.
 MyData myData = HibernateUtil.executeTransaction(session -> {
   MyData myData = new MyData();
   myData.setTitle("new title");
   [...]
   myData.performCreate(admin);
   return myData;
 });
 
 // Example with collection of domain objects as result
 // /!\ DO NOT alter or modify the returned objects as they belongs to a closed Hibernate session, this approach is not recommended.
 List<MyData> myDataList = HibernateUtil.executeTransaction(session -> {
   Criteria criteria = HibernateUtil.getSession().createCriteria(MyData.class);
   criteria.add(Restrictions.ilike("title", "%title%"));
   return criteria.list();
 });
 
 // Example with no result
 Article article = ...;
 Member member = ... ;
 HibernateUtil.executeTransaction(session -> {
   VoteManager.getInstance().performVote(article, member, true);
   article.trackReader(member);
   return null;
 });