Example usage for javax.persistence EntityManager getTransaction

List of usage examples for javax.persistence EntityManager getTransaction

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Introduction

In this page you can find the example usage for javax.persistence EntityManager getTransaction.

Prototype

public EntityTransaction getTransaction();

Source Link

Document

Return the resource-level EntityTransaction object.

Usage

From source file:Professor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        util.checkData("select * from CONTRACT_EMP");

        em.getTransaction().commit();//from  www. jav a 2  s  .co m
        em.close();
        emf.close();
    }

From source file:Professor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        Professor emp = service.createProfessor(1, "name", 100);
        emp = service.createProfessor(2, "name 2", 100);

        Integer userId = 1;/* www .  java2 s.  com*/

        emp = em.find(Professor.class, userId);
        if (emp == null) {
            System.out.println(userId + " not found! ");
        } else {
            System.out.println("Found " + emp);
        }

        for (Object o : em.createQuery("SELECT u FROM Professor u").getResultList()) {
            System.out.println(o);
        }

        util.checkData("select * from Professor");

        em.getTransaction().commit();
        em.close();
        emf.close();
    }

From source file:Professor.java

  public static void main(String[] a) throws Exception {
  JPAUtil util = new JPAUtil();

  EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
  EntityManager em = emf.createEntityManager();
  ProfessorService service = new ProfessorService(em);

  em.getTransaction().begin();
  Professor emp = service.createProfessor(158, "AAA", 45000,ProfessorType.CONTRACT_EMPLOYEE);
  em.getTransaction().commit();//from w w  w . j  a v a 2 s . com
  System.out.println("Persisted " + emp);

  util.checkData("select * from Professor");

  // remove an employee
  em.getTransaction().begin();
  service.removeProfessor(158);
  em.getTransaction().commit();
  System.out.println("Removed Professor 158");

  util.checkData("select * from Professor");
    
  em.close();
  emf.close();
}

From source file:Department.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        service.createProfessor(1, "empName", 1);

        util.checkData("select * from Professor");

        em.getTransaction().commit();// ww  w  .j  a v a 2 s .  c  o m
        em.close();
        emf.close();
    }

From source file:Professor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();
        Professor emp = service.createProfessor(158, "AAA", 45000, new Date());
        em.getTransaction().commit();/* w  w w . j a  v  a2 s  .  c  o m*/
        System.out.println("Persisted " + emp);

        util.checkData("select * from Professor");

        // remove an employee
        em.getTransaction().begin();
        service.removeProfessor(158);
        em.getTransaction().commit();
        System.out.println("Removed Professor 158");

        util.checkData("select * from Professor");

        em.close();
        emf.close();
    }

From source file:BadProfessor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        BadProfessor emp2 = new BadProfessor();
        emp2.setId(2);/*  ww  w.jav a 2s  .c  om*/

        emp2.setName("bad");

        service.createProfessor(emp2);

        System.out.println("Professors: ");
        for (Professor emp1 : service.findAllProfessors()) {
            System.out.print(emp1);
        }

        util.checkData("select * from EMP");

        em.getTransaction().commit();
        em.close();
        emf.close();
    }

From source file:Professor.java

License:asdf

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();
        Professor emp = service.createProfessor(158, "AAA", 45000, "asdf".getBytes());
        em.getTransaction().commit();//from  w ww . j  a  v a2s.  c om
        System.out.println("Persisted " + emp);

        util.checkData("select * from EMP");

        // remove an employee
        em.getTransaction().begin();
        service.removeProfessor(158);
        em.getTransaction().commit();
        System.out.println("Removed Professor 158");

        util.checkData("select * from EMP");

        em.close();
        emf.close();
    }

From source file:es.us.isa.ideas.utilities.PopulateDatabase.java

public static void main(String[] args) {

    ApplicationContext ctx;//from ww w  . ja v  a  2s .c o  m
    EntityManagerFactory emf;
    EntityManager em;
    EntityTransaction et;

    ctx = new ClassPathXmlApplicationContext("utilities/PopulateDatabase.xml");

    emf = Persistence.createEntityManagerFactory("persistenceUnit");
    em = emf.createEntityManager();
    et = em.getTransaction();

    et.begin();
    try {
        for (Entry<String, Object> entry : ctx.getBeansWithAnnotation(Entity.class).entrySet()) {
            em.persist(entry.getValue());
            System.out.println(String.format("Persisting (%s, %s@%d)", entry.getKey(),
                    entry.getValue().getClass().getName(), entry.getValue().hashCode()));
        }
        et.commit();
    } catch (Exception oops) {
        oops.printStackTrace();
        et.rollback();
        oops.printStackTrace();
    } finally {
        if (em.isOpen())
            em.close();
        if (emf.isOpen())
            emf.close();
        ((ClassPathXmlApplicationContext) ctx).close();
    }
}

From source file:BadProfessor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        BadProfessor emp2 = new BadProfessor();
        emp2.setId(2);//from w  w  w.j  av  a2  s  .c o  m

        emp2.setName("bad");

        service.createProfessor(emp2);

        System.out.println("Professors: ");
        for (Professor emp1 : service.findAllProfessors()) {
            System.out.print(emp1);
        }

        util.checkData("select * from BAD_EMP");

        em.getTransaction().commit();
        em.close();
        emf.close();
    }

From source file:Professor.java

public static void main(String[] a) throws Exception {
        JPAUtil util = new JPAUtil();

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("ProfessorService");
        EntityManager em = emf.createEntityManager();
        ProfessorService service = new ProfessorService(em);

        em.getTransaction().begin();

        service.createProfessor(1, "name");
        for (Professor emp : service.findAllProfessors()) {
            System.out.print(emp);
        }/*from   ww w  .j a v  a2s .  c o  m*/
        service.changeProfessorName(1, "newname");
        for (Professor emp : service.findAllProfessors()) {
            System.out.print(emp);
        }
        service.removeProfessor(1);

        for (Professor emp : service.findAllProfessors()) {
            System.out.print(emp);
        }

        util.checkData("select * from Professor");

        em.getTransaction().commit();
        em.close();
        emf.close();
    }