Examples of javax.persistence.EntityManager.persist()

javax.persistence.EntityManager.persist()
Make an entity instance managed and persistent. @param entity @throws EntityExistsException if the entity already exists.(The EntityExistsException may be thrown when the persist operation is invoked, or the EntityExistsException or another PersistenceException may be thrown at commit time.) @throws IllegalStateException if this EntityManager has been closed. @throws IllegalArgumentException if not an entity @throws TransactionRequiredException if invoked on acontainer-managed entity manager of type PersistenceContextType.TRANSACTION and there is no transaction.

            @Override
            protected void invokeApplication() throws Exception {
                Thing thing = new Thing();
                thing.setName("thing");
                EntityManager entityManager = (EntityManager) getValue("#{entityManager}");
                entityManager.persist(thing);
                holder.put("id", thing.getId());
                Contexts.getConversationContext().set("thing", thing);
                Manager.instance().beginConversation();
            }
        }.run();

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        EntityManager session = PersistenceSessionUtil.getSession();
        EntityTransaction tx = session.getTransaction();
        tx.begin();
        session.flush();
        if (user.getUser_id() == null) {
          session.persist(user);
            } else {
              if (!session.contains(user)) {
                session.merge(user);
            }
        }

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        Object idf = PersistenceSessionUtil.createSession();
        EntityManager session = PersistenceSessionUtil.getSession();
        EntityTransaction tx = session.getTransaction();
        tx.begin();
        if (us.getUser_id() == null) {
          session.persist(us);
            } else {
              if (!session.contains(us)) {
                session.merge(us);
            }
        }

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      adr.setStates(st);
      adr.setPhone(phone);
      adr.setEmail(email);


      if (adr.getAdresses_id() == null) {
        session.persist(adr);
          } else {
            if (!session.contains(adr)) {
              session.merge(adr);
          }
      }

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      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();


      if (addr.getAdresses_id() == null) {
        session.persist(addr);
          } else {
            if (!session.contains(addr)) {
              session.merge(addr);
          }
      }

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      if (userSipData.getUserSipDataId() == 0) {
        session.persist(userSipData);
          } else {
            if (!session.contains(userSipData)) {
              session.merge(userSipData);
          }
      }

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      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      
      if (privateMessageFolder.getPrivateMessageFolderId() == 0) {
        session.persist(privateMessageFolder);
          } else {
            if (!session.contains(privateMessageFolder)) {
              session.merge(privateMessageFolder);
          }
      }

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      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      
      if (privateMessage.getPrivateMessageFolderId() == null) {
        session.persist(privateMessage);
          } else {
            if (!session.contains(privateMessage)) {
              session.merge(privateMessage);
          }
      }

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      if (userContacts.getUserContactId() == 0) {
        session.persist(userContacts);
          } else {
            if (!session.contains(userContacts)) {
              session.merge(userContacts);
          }
      }

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      if (userContacts.getUserContactId() == 0) {
        session.persist(userContacts);
          } else {
            if (!session.contains(userContacts)) {
              session.merge(userContacts);
          }
      }

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