Examples of org.hibernate.Transaction

org.hibernate.Transaction
Allows the application to define units of work, while maintaining abstraction from the underlying transaction implementation (eg. JTA, JDBC).

A transaction is associated with a Session and is usually instantiated by a call to Session.beginTransaction(). A single session might span multiple transactions since the notion of a session (a conversation between the application and the datastore) is of coarser granularity than the notion of a transaction. However, it is intended that there be at most one uncommitted Transaction associated with a particular Session at any time.

Implementors are not intended to be threadsafe. @see Session#beginTransaction() @see org.hibernate.transaction.TransactionFactory @author Anton van Straaten

  private Animal createAndPersistAnotherAnimal(Session session) {
    Animal animal = new Animal();
    animal.setId( "animal-2" );
    animal.setName( "Berta" );


    Transaction transaction = session.beginTransaction();
    assertThat( animal.getRevision() ).isNull();
    session.persist( animal );
    transaction.commit();
    assertThat( animal.getRevision() ).isNotNull();


    return animal;
  }

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    Zoo zoo = new Zoo();
    zoo.setId( "zoo-1" );
    zoo.setName( "Bagenhecks Tierpark" );
    zoo.getAnimals().add( animal );


    Transaction transaction = session.beginTransaction();
    session.persist( zoo );
    transaction.commit();


    return zoo;
  }

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      @Override
      public String call() throws Exception {
        Session session = openSession();


        Transaction transaction = session.beginTransaction();
        final Animal animal = (Animal) session.get( Animal.class, "animal-1" );
        animal.setName( "Xavier" );
        transaction.commit();


        return animal.getRevision();
      }
    } ).get();
  }

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      public String call() throws Exception {
        Session session = openSession();


        Animal berta = createAndPersistAnotherAnimal( session );


        Transaction transaction = session.beginTransaction();
        final Zoo zoo = (Zoo) session.get( Zoo.class, "zoo-1" );
        zoo.getAnimals().add( berta );
        transaction.commit();


        return zoo.getRevision();
      }
    } ).get();
  }

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    return Executors.newSingleThreadExecutor().submit( new Callable<String>() {


      @Override
      public String call() throws Exception {
        Session session = openSession();
        Transaction transaction = session.beginTransaction();


        final Zoo zoo = (Zoo) session.get( Zoo.class, "zoo-1" );
        zoo.setName( "Hilwema" );


        transaction.commit();
        return zoo.getRevision();
      }
    } ).get();
  }

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      }
    } ).get();
  }


  private Project createAndPersistProjectWithContributor() {
    Transaction transaction = session.beginTransaction();


    Project ogm = new Project();
    ogm.setId( "project-1" );
    ogm.setName( "OGM" );
    session.persist( ogm  );


    Contributor davide = new Contributor();
    davide.setId( "contributor-1" );
    davide.setName( "Davide" );
    session.persist( davide );


    ogm.getMembers().add( davide );
    davide.getProjects().add( ogm );


    transaction.commit();
    return ogm;
  }

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    transaction.commit();
    return ogm;
  }


  private Project createAndPersistProjectWithUser() {
    Transaction transaction = session.beginTransaction();


    Project ogm = new Project();
    ogm.setId( "project-2" );
    ogm.setName( "Search" );
    session.persist( ogm  );


    User bob = new User();
    bob.setId( "user-1" );
    bob.setName( "Bob" );
    session.persist( bob );


    ogm.getUsers().add( bob );
    bob.getProjects().add( ogm );


    transaction.commit();
    return ogm;
  }

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    transaction.commit();
    return ogm;
  }


  private Project createAndPersistProjectWithProjectGroup() {
    Transaction transaction = session.beginTransaction();


    Project validator = new Project();
    validator.setId( "project-3" );
    validator.setName( "Validator" );
    session.persist( validator  );


    ProjectGroup hibernateProjects = new ProjectGroup();
    hibernateProjects.setId( "project-group-1" );
    hibernateProjects.setName( "Hibernate" );
    session.persist( hibernateProjects );


    validator.setProjectGroup( hibernateProjects );
    hibernateProjects.getProjects().add( validator );


    transaction.commit();
    return validator;
  }

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      @Override
      public String call() throws Exception {
        Session session = openSession();


        Transaction transaction = session.beginTransaction();
        final Project project = (Project) session.get( Project.class, "project-1" );


        Contributor sanne = new Contributor();
        sanne.setId( "contributor-2" );
        sanne.setName( "Sanne" );


        sanne.getProjects().add( project );
        project.getMembers().add( sanne );


        session.persist( sanne );


        transaction.commit();


        return project.getRevision();
      }
    } ).get();
  }

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  private final OscarWildePoem ballade = new OscarWildePoem( 3L, "Ballade De Marguerite", "Oscar Wilde", new GregorianCalendar( 1881, 3, 1 ).getTime() );


  @Before
  public void init() {
    Session session = openSession();
    Transaction transaction = session.beginTransaction();
    session.persist( portia );
    session.persist( athanasia );
    session.persist( ballade );
    transaction.commit();
    session.clear();
    session.close();
  }

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