X-Git-Url: https://juplo.de/gitweb/?p=hibernate4-maven-plugin;a=blobdiff_plain;f=src%2Fit%2Ftutorials-5.0.12%2Fentitymanager%2Fsrc%2Ftest%2Fjava%2Forg%2Fhibernate%2Ftutorial%2Fem%2FEntityManagerIllustrationTest.java;fp=src%2Fit%2Ftutorials-5.0.12%2Fentitymanager%2Fsrc%2Ftest%2Fjava%2Forg%2Fhibernate%2Ftutorial%2Fem%2FEntityManagerIllustrationTest.java;h=feebd89a571317194a844fdda569e216fbc2c70b;hp=0000000000000000000000000000000000000000;hb=fe9c99046f93cbc5a14d7b5314dc1c5c06ae2b80;hpb=40e2f2b4f5c2050c8673b5be8a2d374c003acd98 diff --git a/src/it/tutorials-5.0.12/entitymanager/src/test/java/org/hibernate/tutorial/em/EntityManagerIllustrationTest.java b/src/it/tutorials-5.0.12/entitymanager/src/test/java/org/hibernate/tutorial/em/EntityManagerIllustrationTest.java new file mode 100644 index 00000000..feebd89a --- /dev/null +++ b/src/it/tutorials-5.0.12/entitymanager/src/test/java/org/hibernate/tutorial/em/EntityManagerIllustrationTest.java @@ -0,0 +1,73 @@ +/* + * Hibernate, Relational Persistence for Idiomatic Java + * + * Copyright (c) 2010, Red Hat Inc. or third-party contributors as + * indicated by the @author tags or express copyright attribution + * statements applied by the authors. All third-party contributions are + * distributed under license by Red Hat Inc. + * + * This copyrighted material is made available to anyone wishing to use, modify, + * copy, or redistribute it subject to the terms and conditions of the GNU + * Lesser General Public License, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this distribution; if not, write to: + * Free Software Foundation, Inc. + * 51 Franklin Street, Fifth Floor + * Boston, MA 02110-1301 USA + */ +package org.hibernate.tutorial.em; + +import java.util.Date; +import java.util.List; +import javax.persistence.EntityManager; +import javax.persistence.EntityManagerFactory; +import javax.persistence.Persistence; + +import junit.framework.TestCase; + +/** + * Illustrates basic use of Hibernate as a JPA provider. + * + * @author Steve Ebersole + */ +public class EntityManagerIllustrationTest extends TestCase { + private EntityManagerFactory entityManagerFactory; + + @Override + protected void setUp() throws Exception { + // like discussed with regards to SessionFactory, an EntityManagerFactory is set up once for an application + // IMPORTANT: notice how the name here matches the name we gave the persistence-unit in persistence.xml! + entityManagerFactory = Persistence.createEntityManagerFactory( "org.hibernate.tutorial.jpa" ); + } + + @Override + protected void tearDown() throws Exception { + entityManagerFactory.close(); + } + + public void testBasicUsage() { + // create a couple of events... + EntityManager entityManager = entityManagerFactory.createEntityManager(); + entityManager.getTransaction().begin(); + entityManager.persist( new Event( "Our very first event!", new Date() ) ); + entityManager.persist( new Event( "A follow up event", new Date() ) ); + entityManager.getTransaction().commit(); + entityManager.close(); + + // now lets pull events from the database and list them + entityManager = entityManagerFactory.createEntityManager(); + entityManager.getTransaction().begin(); + List result = entityManager.createQuery( "from Event", Event.class ).getResultList(); + for ( Event event : result ) { + System.out.println( "Event (" + event.getDate() + ") : " + event.getTitle() ); + } + entityManager.getTransaction().commit(); + entityManager.close(); + } +}