Transaction in EJB
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* this work for additional information regarding copyright ownership.
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* http://www.apache.org/licenses/LICENSE-2.0
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package org.superbiz.injection.tx;
import javax.ejb.Stateful;
import javax.ejb.TransactionAttribute;
import static javax.ejb.TransactionAttributeType.MANDATORY;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import javax.persistence.Query;
import java.util.List;
@Stateful(name = "Movies")
@TransactionAttribute(MANDATORY)
public class MoviesImpl implements Movies {
@PersistenceContext(unitName = "movie-unit", type = PersistenceContextType.TRANSACTION)
private EntityManager entityManager;
public void addMovie(Movie movie) throws Exception {
entityManager.persist(movie);
}
public void deleteMovie(Movie movie) throws Exception {
entityManager.remove(movie);
}
public List<Movie> getMovies() throws Exception {
Query query = entityManager.createQuery("SELECT m from Movie as m");
return query.getResultList();
}
}
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