| /* |
| * 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 demo; |
| |
| import java.util.Date; |
| |
| import javax.persistence.EntityManager; |
| |
| /** |
| * Loads some example Actor-Movie data. |
| * |
| * @author Pinaki Poddar |
| * |
| */ |
| public class DataLoader { |
| // Hand-tuned data for Testing |
| @SuppressWarnings("deprecation") |
| public static Object[][] ACTOR_DATA = { |
| new Object[] {"m1", "Robert", "Redford", Actor.Gender.Male, new Date(50, 1, 12)}, |
| new Object[] {"m2", "Robert", "De Niro", Actor.Gender.Male, new Date(40, 4, 14)}, |
| new Object[] {"m3", "Al", "Pacino", Actor.Gender.Male, new Date(50, 1, 12)}, |
| new Object[] {"m4", "Jack", "Nichelson",Actor.Gender.Male, new Date(40, 4, 14)}, |
| new Object[] {"m5", "Clint", "Eastwood", Actor.Gender.Male, new Date(50, 1, 12)}, |
| |
| new Object[] {"f1", "Meryl", "Streep", Actor.Gender.Female, new Date(40, 4, 14)}, |
| new Object[] {"f2", "Fay", "Dunaway", Actor.Gender.Female, new Date(50, 1, 12)}, |
| new Object[] {"f3", "Jodie", "Foster", Actor.Gender.Female, new Date(40, 4, 14)}, |
| new Object[] {"f4", "Diane", "Keaton", Actor.Gender.Female, new Date(50, 1, 12)}, |
| new Object[] {"f5", "Catherine", "Hepburn", Actor.Gender.Female, new Date(40, 4, 14)}, |
| }; |
| |
| public static Object[][] MOVIE_DATA = { |
| new Object[] {"1", "China Town", 1980}, |
| new Object[] {"2", "Taxi Driver", 1980}, |
| new Object[] {"3", "Where Eagles Dare", 1980}, |
| new Object[] {"4", "Godfather", 1980}, |
| new Object[] {"5", "Horse Whisperer", 1980}, |
| }; |
| |
| public static int[][] MOVIE_ACTORS = { |
| new int[] {3,6}, |
| new int[] {1,7}, |
| new int[] {4}, |
| new int[] {2,3,8}, |
| new int[] {0} |
| }; |
| |
| public static int[][] PARTNERS = { |
| new int[] {3,6}, |
| new int[] {1,7}, |
| new int[] {3,8}, |
| }; |
| |
| public void populate(EntityManager em) throws Exception { |
| Long count = em.createQuery("select count(m) from Movie m", Long.class).getSingleResult(); |
| if (count != null && count > 0) { |
| System.err.println("Found " + count + " Movie records in the database"); |
| return; |
| } |
| |
| |
| Actor[] actors = createActors(); |
| Movie[] movies = createMovies(); |
| linkActorAndMovie(movies, actors); |
| makePartner(actors); |
| em.getTransaction().begin(); |
| for (Actor a : actors) { |
| em.persist(a); |
| } |
| for (Movie m : movies) { |
| em.persist(m); |
| } |
| em.getTransaction().commit(); |
| } |
| |
| Actor[] createActors() { |
| Actor[] actors = new Actor[ACTOR_DATA.length]; |
| for (int i = 0; i < ACTOR_DATA.length; i++) { |
| Object[] a = ACTOR_DATA[i]; |
| actors[i] = new Actor((String)a[0], (String)a[1], (String)a[2], (Actor.Gender)a[3], (Date)a[4]); |
| } |
| return actors; |
| } |
| |
| Movie[] createMovies() { |
| Movie[] movies = new Movie[MOVIE_DATA.length]; |
| for (int i = 0; i < MOVIE_DATA.length; i++) { |
| Object[] m = MOVIE_DATA[i]; |
| movies[i] = new Movie((String)m[0], (String)m[1], (Integer)m[2]); |
| } |
| return movies; |
| } |
| |
| void linkActorAndMovie(Movie[] movies, Actor[] actors) { |
| for (int i = 0; i < MOVIE_ACTORS.length; i++) { |
| int[] roles = MOVIE_ACTORS[i]; |
| Movie m = movies[i]; |
| for (int j = 0; j < roles.length; j++) { |
| Actor a = actors[roles[j]]; |
| a.addMovie(m); |
| m.addActor(a); |
| } |
| } |
| } |
| |
| void makePartner(Actor[] actors) { |
| for (int i = 0; i < PARTNERS.length; i++) { |
| int[] partners = PARTNERS[i]; |
| Actor a1 = actors[partners[0]]; |
| Actor a2 = actors[partners[1]]; |
| a1.setPartner(a2); |
| a2.setPartner(a1); |
| } |
| } |
| |
| } |