Examples of javax.persistence.EntityManager.find()

javax.persistence.EntityManager.find()
Find by primary key. @param entityClass @param primaryKey @return the found entity instance or nullif the entity does not exist @throws IllegalStateException if this EntityManager has been closed @throws IllegalArgumentException if the first argument doesnot denote an entity type or the second argument is not a valid type for that entity’s primary key

        new FacesRequest("/page.xhtml") {
            @Override
            @SuppressWarnings("cast")
            protected void invokeApplication() throws Exception {
                EntityManager entityManager = (EntityManager) getValue("#{entityManager}");
                Thing thing = (Thing) entityManager.find(Thing.class, holder.get("id"));
                thing.setName("foo");
                entityManager.flush();
            }
        }.run();

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
  
      privateMessageFolder = session.find(PrivateMessageFolder.class, privateMessageFolder.getPrivateMessageFolderId());
      session.remove(privateMessageFolder);
      
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      flv = session.find(Fieldlanguagesvalues.class, fieldlanguagesvalues_id);
      session.remove(flv);
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);
      
      return new Long(-28);

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      for (FlvRecordingLog flvRecordingLog : flvRecordingLogs) {
        flvRecordingLog = session.find(FlvRecordingLog.class, flvRecordingLog.getFlvRecordingLogId());
        session.remove(flvRecordingLog);
      }
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      for (Iterator it = l.iterator(); it.hasNext();) {
        Sessiondata sData = (Sessiondata) it.next();
        sData = session.find(Sessiondata.class, sData.getId());
        session.remove(sData);
      }
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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        Object idf = PersistenceSessionUtil.createSession();
        EntityManager session = PersistenceSessionUtil.getSession();
        EntityTransaction tx = session.getTransaction();
        tx.begin();
        sData = session.find(Sessiondata.class, sData.getId());
        session.remove(sData);
        PersistenceSessionUtil.closeSession(idf);
      }


    } catch (Exception err) {

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
  
      ldapConfig = session.find(LdapConfig.class, ldapConfig.getLdapConfigId());
      session.remove(ldapConfig);
  
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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  {
    EntityManager em = getCurrent();
    
    if (em != null) {
      try {
        T value = em.find(entityClass, primaryKey);


        return value;
      } catch (RuntimeException e) {
        throw e;
      }

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    }
    
    em = createEntityManager();
    
    try {
      T value = em.find(entityClass, primaryKey);


      return value;
    } finally {
      freeEntityManager(em);
    }

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                    Map<String, Object> properties)
  {
    EntityManager em = getCurrent();
    
    if (em != null)
      return em.find(entityClass, primaryKey, properties);
    
    em = createEntityManager();
    
    try {
      return em.find(entityClass, primaryKey, properties);

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