em.refresh(entity);

import org.springframework.data.repository.RepositoryDefinition;
import org.springframework.transaction.annotation.Transactional;

import de.welldoo.tk.service.objective.config.TkModule;

@RepositoryDefinition(domainClass = Objective.class, idClass = Long.class)
@Transactional(readOnly = true)
public interface ObjectiveRepository {

	@Transactional(readOnly = false)
	void save(Objective objective);
	
	@Transactional(readOnly = false)
	void update(Objective objective);

	@Transactional(readOnly = false)
	void delete(Objective objective);

	Objective findById(long id);
}

public Action createAction(long participantId, TkModule module, long objectiveId, ActionModel actionModel) {

		Objective objective = objectiveRepository.findByParticipantIdAndModuleAndId(participantId, module, objectiveId);

		if (objective != null) {
			Action action = new Action();
			action.setObjective(objective);
			action.setName(actionModel.getName());
			action.setAmount(actionModel.getAmount());
			action.setDate(actionModel.getDate());
			action.setDateTo(actionModel.getDateTo());
			action.setFrequencyFlag(actionModel.getFrequencyFlag());
			action.setDaysOfWeek(actionModel.getDaysOfWeek());

			objective.getActions().add(action);

			objectiveRepository.save(objective);

			// TODO return created element
			// Action lastElement = Iterables.getLast(objective.getActions());

			return action;
		} else {
			throw new ServiceException("The action with this ID does not exist.", "objective.id.bad");
		}

	}

public interface ObjectiveRepositoryCustom {

	public Objective update(Objective objective);
}

public class ObjectiveRepositoryImpl implements ObjectiveRepositoryCustom{

	@PersistenceContext
	private EntityManager entityManager;

	public Objective update(Objective objective) {

		Objective o = entityManager.merge(objective);
		entityManager.refresh(o);

		return o;
	}
}

	@Inject
	private ObjectiveRepositoryImpl objectiveRepositoryImpl;

.....

			Objective objective2 = objectiveRepositoryImpl.update(objective);

в 		entityManager.refresh(o);

java.lang.IllegalArgumentException: Entity not managed
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:1251)
	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:1227)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:366)
	at com.sun.proxy.$Proxy32.refresh(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:241)
	at com.sun.proxy.$Proxy32.refresh(Unknown Source)

....................