Author: ppoddar
Date: Tue Nov 23 07:31:27 2010
New Revision: 1038007
URL: http://svn.apache.org/viewvc?rev=1038007&view=rev
Log:
OPENJPA-1851: Add dataloader
Added:
openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java
(with props)
Added:
openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java
URL:
http://svn.apache.org/viewvc/openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java?rev=1038007&view=auto
==============================================================================
---
openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java
(added)
+++
openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java
Tue Nov 23 07:31:27 2010
@@ -0,0 +1,133 @@
+/*
+ * 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.longValue() > 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);
+ }
+ }
+
+}
Propchange:
openjpa/sandboxes/jest/openjpa-examples/jest/src/main/java/demo/DataLoader.java
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