portlet plugins - service builder - rollback

[Jonatan Oyola, modificado hace 12 años.]

I am using Liferay 6.0.6, and I created a portlet plugin. Then I added some services.

For example:

<entity name="Alumno" table="pa_alumno" local-service="true" remote-service="false">
		<column name="alumnoId" type="long" primary="true" />
		<column name="documento" type="long" />
		<column name="userId" type="long" />
		<column name="folderId" type="long" />

		<finder name="User" return-type="Collection">
			<finder-column name="userId" />
		</finder>

		<reference package-path="com.liferay.counter" entity="Counter" />
		<reference package-path="com.liferay.portal" entity="User" />
</entity>

I created the method addAlumno in AlumnoLocalServiceImpl. I use the userLocalService for create a new user.

I need to do rollback if an error ocurrs in the method. The new created user must delete in case of error.

       @Transactional(readOnly = false, rollbackFor = { AlumnoException.class }, propagation = Propagation.REQUIRED)
	public Alumno addAlumno(Long companyId, String nombre, String apellido,
			Long documento, String email, String sexo, Date fechaNacimiento,
			String lugarNacimiento, String nacionalidad, Long cursoId,
			Locale locale) throws AlumnoException {

		boolean autoPassword = true;
		String password = StringPool.BLANK;
		boolean autoScreenName = true;
		String screenName = StringPool.BLANK;
		Long facebookId = 0L;
		String openId = StringPool.BLANK;
		int prefixId = 0;
		int suffixId = 0;
		Boolean sexoMasculino = Validator.equals(sexo, "H");
		Calendar calendar = CalendarFactoryUtil.getCalendar();
		calendar.setTime(fechaNacimiento);
		Integer mesCumple = calendar.get(Calendar.MONTH);
		Integer diaCumple = calendar.get(Calendar.DATE);
		Integer anioCumple = calendar.get(Calendar.YEAR);
		long[] groupIds = null;
		long[] organizationIds = null;
		long[] roleIds = null;
		long[] userGroupIds = null;
		ServiceContext serviceContext = new ServiceContext();

		User user;
		try {
			user = userLocalService.addUser(0L, companyId, autoPassword,
					password, password, autoScreenName, screenName, email,
					facebookId, openId, locale, nombre, StringPool.BLANK,
					apellido, prefixId, suffixId, sexoMasculino, mesCumple,
					diaCumple, anioCumple, "Alumno", groupIds, organizationIds,
					roleIds, userGroupIds, false, serviceContext);
		} catch (Exception e) {
			if (_log.isDebugEnabled()) {
				_log.debug(e.getMessage(), e);
			}
			throw new AlumnoException(
					"El email ya es utilizado por otro usuario");
		}
             Alumno alumno;
		try {
			long alumnoId = counterLocalService.increment(Alumno.class
					.getName());
			alumno = alumnoPersistence.create(alumnoId);
			alumno.setDocumento(documento);
			alumnoPersistence.update(alumno, false);
		} catch (Exception e) {
			if (_log.isDebugEnabled()) {
				_log.debug(e.getMessage(), e);
			}
			throw new AlumnoException("No se pudo crear el alumno", e);
		}

		return alumno;
	}

is it possible to create a transaction?

Thanks on advances

[Federico Miralles, modificado hace 11 años.]

Hello Jonatan,

I'm facing the very same problem. I have to create a Liferay user and another custom entity related to that user. The thing is that if something goes wrong the whole transaction should be rolled back and none the instances should be saved. However using the following approach they do, I mean both of the instances are store in the database:

public class MyEntityLocalServiceImpl extends MyEntityLocalServiceBaseImpl {

	public createMyEntity (...) {
		try {
			//Creating liferay user...
			User user = userPersistence.create(CounterLocalServiceUtil.increment(User.class.getName()));
			//Setting other attributes...
			userPersistence.update(user, false);
			
			//Creating my own entity...
			MyEntity myEntity = myEntityPersistence.create(CounterLocalServiceUtil.increment(MyEntity.class.getName()));
			myEntity.setUserId(user.getUserId());
			//Setting other attributes...
                        myEntityPersistence.update(myEntity, false);

			//Forcing exception
			throw new Exception("Testing if a transaction works as it's supposed to be");
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}
	...
}

How did you manage to handle this?

TIA

Federico

[MICHAIL MOUDATSOS, modificado hace 11 años.]

I haven't tried it myself (transaction with portal and custom services) but this post may help you