/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.userguide.collections;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.Id;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.junit.Test;
import org.jboss.logging.Logger;
import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
/**
* @author Vlad Mihalcea
*/
public class BasicTypeElementCollectionTest extends BaseEntityManagerFunctionalTestCase {
private static final Logger log = Logger.getLogger( BasicTypeCollectionTest.class );
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class<?>[] {
Person.class
};
}
@Override
public void buildEntityManagerFactory() throws Exception {
super.buildEntityManagerFactory();
doInJPA( this::entityManagerFactory, entityManager -> {
Person person = new Person();
person.id = 1L;
person.phones.add( "027-123-4567" );
person.phones.add( "028-234-9876" );
entityManager.persist( person );
} );
}
@Test
public void testProxies() {
doInJPA( this::entityManagerFactory, entityManager -> {
try {
//tag::collections-collection-proxy-usage-example[]
Person person = entityManager.find( Person.class, 1L );
//Throws java.lang.ClassCastException: org.hibernate.collection.internal.PersistentBag cannot be cast to java.util.ArrayList
ArrayList<String> phones = (ArrayList<String>) person.getPhones();
//end::collections-collection-proxy-usage-example[]
}
catch (Exception expected) {
log.error( "Failure", expected );
}
} );
}
@Test
public void testLifecycle() {
doInJPA( this::entityManagerFactory, entityManager -> {
Person person = entityManager.find( Person.class, 1L );
log.info( "Clear element collection and add element" );
//tag::collections-value-type-collection-lifecycle-example[]
person.getPhones().clear();
person.getPhones().add( "123-456-7890" );
person.getPhones().add( "456-000-1234" );
//end::collections-value-type-collection-lifecycle-example[]
} );
doInJPA( this::entityManagerFactory, entityManager -> {
Person person = entityManager.find( Person.class, 1L );
log.info( "Remove one element" );
//tag::collections-value-type-collection-remove-example[]
person.getPhones().remove( 0 );
//end::collections-value-type-collection-remove-example[]
} );
}
//tag::collections-collection-proxy-entity-example[]
@Entity(name = "Person")
public static class Person {
@Id
private Long id;
@ElementCollection
private List<String> phones = new ArrayList<>();
public List<String> getPhones() {
return phones;
}
}
//end::collections-collection-proxy-entity-example[]
}