128 lines
4.5 KiB
Java
128 lines
4.5 KiB
Java
package at.technikumwien.movies;
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import javax.annotation.Resource;
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import javax.ejb.*;
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import javax.persistence.EntityManager;
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import javax.persistence.EntityNotFoundException;
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import javax.persistence.PersistenceContext;
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import java.util.List;
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import java.util.logging.Logger;
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@Stateless
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@TransactionManagement(value=TransactionManagementType.CONTAINER)
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public class MoviesService {
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private static final Logger LOGGER = Logger.getLogger(MoviesService.class.getName());
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@Resource
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private SessionContext context;
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@PersistenceContext(unitName = "MoviesPU")
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private EntityManager em;
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public Movies findById(long id) {
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LOGGER.info("findById() >> id=" + id);
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Movies movies = em.find(Movies.class, id);
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if (movies == null) {
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throw new EntityNotFoundException("can't find movie with id=" + id);
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}
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return movies;
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}
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public List<Movies> findByTitle(String title) {
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LOGGER.info("findByTitle() >> title=" + title);
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return em.createNamedQuery("Movies.selectByTitle", Movies.class)
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.setParameter("title", "%" + title + "%")
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.getResultList();
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}
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public List<Movies> findAll() {
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LOGGER.info("findAll()");
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return em.createNamedQuery("Movies.selectAll", Movies.class) //JPQL -> java persistence query language
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.getResultList();
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}
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public void removeById(long id) {
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LOGGER.info("removeById() >> id=" + id);
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Movies movies = findById(id);
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em.remove(movies); //managed news required
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}
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public List<Actors> findAllActors() {
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LOGGER.info("findAllActors)");
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return em.createNamedQuery("Actors.selectAllActors", Actors.class)
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.getResultList();
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}
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public List<Studios> findAllStudios() {
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LOGGER.info("findAllStudios)");
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return em.createNamedQuery("Studios.selectAllStudios", Studios.class)
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.getResultList();
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}
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// TODO maybe check if the movie already exists?
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@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
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public void save(List<Movies> movies) {
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for (Movies movie : movies) {
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try {
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// Get studio for the movie from the database
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Studios movieStudio = movie.getStudio();
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LOGGER.info("Get a studio" + movieStudio);
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List<Studios> studioListResult = em.createNamedQuery("Studios.getIdByProperties", Studios.class)
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.setParameter("name", movieStudio.getName())
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.setParameter("countrycode", movieStudio.getCountrycode())
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.setParameter("postcode", movieStudio.getPostcode())
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.getResultList();
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if (!studioListResult.isEmpty() && studioListResult.size() > 0) {
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Long actorId = studioListResult.get(0).getId();
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movieStudio.setId(actorId);
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}
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else
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{
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LOGGER.info("Rollback! Movie studio: " + movieStudio);
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context.setRollbackOnly();
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return;
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}
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// TODO use also birthday
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// Get actor for the movie from the database
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for (Actors movieActor : movie.getActors()) {
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LOGGER.info("Get an actor " + movieActor);
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List<Actors> actorListResult = em.createNamedQuery("Actors.getIdByProperties", Actors.class)
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.setParameter("firstname", movieActor.getFirstname())
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.setParameter("lastname", movieActor.getLastname())
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.setParameter("sex", movieActor.getSex())
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//.setParameter("birthdate", movieActor.getBirthdate())
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.getResultList();
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if (!actorListResult.isEmpty() && actorListResult.size() > 0) {
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Long actorId = actorListResult.get(0).getId();
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movieActor.setId(actorId);
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}
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else
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{
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LOGGER.info("Rollback! Movie actor: " + movieActor);
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context.setRollbackOnly();
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return;
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}
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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}
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LOGGER.info("save() >> movies" + movies);
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for (Movies movie : movies) {
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em.merge(movie);
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}
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}
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} |