| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.superbiz.moviefun; |
| |
| import javax.ejb.Stateless; |
| import javax.persistence.EntityManager; |
| import javax.persistence.PersistenceContext; |
| import javax.persistence.TypedQuery; |
| import javax.persistence.criteria.CriteriaBuilder; |
| import javax.persistence.criteria.CriteriaQuery; |
| import javax.persistence.criteria.Path; |
| import javax.persistence.criteria.Predicate; |
| import javax.persistence.criteria.Root; |
| import javax.persistence.metamodel.EntityType; |
| import java.util.List; |
| |
| @Stateless |
| public class MoviesBean { |
| |
| @PersistenceContext(unitName = "movie-unit") |
| private EntityManager entityManager; |
| |
| public Movie find(Long id) { |
| return entityManager.find(Movie.class, id); |
| } |
| |
| public void addMovie(Movie movie) { |
| entityManager.persist(movie); |
| } |
| |
| public void editMovie(Movie movie) { |
| entityManager.merge(movie); |
| } |
| |
| public void deleteMovie(Movie movie) { |
| entityManager.remove(movie); |
| } |
| |
| public void deleteMovieId(long id) { |
| Movie movie = entityManager.find(Movie.class, id); |
| deleteMovie(movie); |
| } |
| |
| public List<Movie> getMovies() { |
| CriteriaQuery<Movie> cq = entityManager.getCriteriaBuilder().createQuery(Movie.class); |
| cq.select(cq.from(Movie.class)); |
| return entityManager.createQuery(cq).getResultList(); |
| } |
| |
| public List<Movie> findAll(int firstResult, int maxResults) { |
| CriteriaQuery<Movie> cq = entityManager.getCriteriaBuilder().createQuery(Movie.class); |
| cq.select(cq.from(Movie.class)); |
| TypedQuery<Movie> q = entityManager.createQuery(cq); |
| q.setMaxResults(maxResults); |
| q.setFirstResult(firstResult); |
| return q.getResultList(); |
| } |
| |
| public int countAll() { |
| CriteriaQuery<Long> cq = entityManager.getCriteriaBuilder().createQuery(Long.class); |
| Root<Movie> rt = cq.from(Movie.class); |
| cq.select(entityManager.getCriteriaBuilder().count(rt)); |
| TypedQuery<Long> q = entityManager.createQuery(cq); |
| return (q.getSingleResult()).intValue(); |
| } |
| |
| public int count(String field, String searchTerm) { |
| CriteriaBuilder qb = entityManager.getCriteriaBuilder(); |
| CriteriaQuery<Long> cq = qb.createQuery(Long.class); |
| Root<Movie> root = cq.from(Movie.class); |
| EntityType<Movie> type = entityManager.getMetamodel().entity(Movie.class); |
| |
| Path<String> path = root.get(type.getDeclaredSingularAttribute(field, String.class)); |
| Predicate condition = qb.like(path, "%" + searchTerm + "%"); |
| |
| cq.select(qb.count(root)); |
| cq.where(condition); |
| |
| return entityManager.createQuery(cq).getSingleResult().intValue(); |
| } |
| |
| public List<Movie> findRange(String field, String searchTerm, int firstResult, int maxResults) { |
| CriteriaBuilder qb = entityManager.getCriteriaBuilder(); |
| CriteriaQuery<Movie> cq = qb.createQuery(Movie.class); |
| Root<Movie> root = cq.from(Movie.class); |
| EntityType<Movie> type = entityManager.getMetamodel().entity(Movie.class); |
| |
| Path<String> path = root.get(type.getDeclaredSingularAttribute(field, String.class)); |
| Predicate condition = qb.like(path, "%" + searchTerm + "%"); |
| |
| cq.where(condition); |
| TypedQuery<Movie> q = entityManager.createQuery(cq); |
| q.setMaxResults(maxResults); |
| q.setFirstResult(firstResult); |
| return q.getResultList(); |
| } |
| |
| public void clean() { |
| entityManager.createQuery("delete from Movie").executeUpdate(); |
| } |
| } |