HHH-9409 - non-auto-apply converter fails at element collection
(cherry picked from commit 39e3dbb8b6
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/*
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* Hibernate, Relational Persistence for Idiomatic Java
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*
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* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
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* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
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*/
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package org.hibernate.jpa.test.convert;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import javax.persistence.AttributeConverter;
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import javax.persistence.CollectionTable;
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import javax.persistence.Column;
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import javax.persistence.Convert;
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import javax.persistence.Converter;
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import javax.persistence.ElementCollection;
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import javax.persistence.Entity;
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import javax.persistence.EntityManager;
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import javax.persistence.EntityManagerFactory;
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import javax.persistence.FetchType;
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import javax.persistence.Id;
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import javax.persistence.JoinColumn;
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import javax.persistence.Table;
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import javax.persistence.UniqueConstraint;
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import org.hibernate.cfg.AvailableSettings;
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import org.hibernate.jpa.boot.spi.Bootstrap;
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import org.hibernate.jpa.test.PersistenceUnitDescriptorAdapter;
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import org.hibernate.testing.TestForIssue;
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import org.hibernate.testing.junit4.BaseUnitTestCase;
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import org.junit.Test;
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import static org.junit.Assert.assertEquals;
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/**
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* @author Steve Ebersole
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*/
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@TestForIssue( jiraKey = "HHH-8529" )
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public class CollectionElementExplicitConversionTest extends BaseUnitTestCase {
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@Test
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public void testElementCollectionConversion() {
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final PersistenceUnitDescriptorAdapter pu = new PersistenceUnitDescriptorAdapter() {
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@Override
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public List<String> getManagedClassNames() {
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return Arrays.asList( Customer.class.getName(), ColorTypeConverter.class.getName() );
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}
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};
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final Map settings = new HashMap();
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settings.put( AvailableSettings.HBM2DDL_AUTO, "create-drop" );
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EntityManagerFactory emf = Bootstrap.getEntityManagerFactoryBuilder( pu, settings ).build();
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try {
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EntityManager em = emf.createEntityManager();
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em.getTransaction().begin();
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Customer customer = new Customer( 1 );
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customer.colors.add( ColorType.BLUE );
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em.persist( customer );
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em.getTransaction().commit();
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em.close();
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em = emf.createEntityManager();
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em.getTransaction().begin();
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assertEquals( 1, em.find( Customer.class, 1 ).colors.size() );
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em.getTransaction().commit();
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em.close();
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em = emf.createEntityManager();
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em.getTransaction().begin();
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customer = em.find( Customer.class, 1 );
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em.remove( customer );
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em.getTransaction().commit();
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em.close();
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}
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finally {
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emf.close();
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}
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}
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@Entity( name = "Customer" )
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@Table( name = "CUST" )
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public static class Customer {
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@Id
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private Integer id;
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@ElementCollection(fetch = FetchType.EAGER)
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@CollectionTable(
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name = "cust_color",
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joinColumns = @JoinColumn(name = "cust_fk", nullable = false),
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uniqueConstraints = @UniqueConstraint(columnNames = { "cust_fk", "color" })
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)
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@Column(name = "color", nullable = false)
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@Convert( converter = ColorTypeConverter.class )
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private Set<ColorType> colors = new HashSet<ColorType>();
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public Customer() {
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}
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public Customer(Integer id) {
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this.id = id;
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}
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}
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// an enum-like class (converters are technically not allowed to apply to enums)
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public static class ColorType {
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public static ColorType BLUE = new ColorType( "blue" );
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public static ColorType RED = new ColorType( "red" );
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public static ColorType YELLOW = new ColorType( "yellow" );
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private final String color;
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public ColorType(String color) {
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this.color = color;
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}
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public String toExternalForm() {
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return color;
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}
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public static ColorType fromExternalForm(String color) {
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if ( BLUE.color.equals( color ) ) {
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return BLUE;
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}
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else if ( RED.color.equals( color ) ) {
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return RED;
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}
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else if ( YELLOW.color.equals( color ) ) {
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return YELLOW;
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}
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else {
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throw new RuntimeException( "Unknown color : " + color );
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}
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}
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}
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@Converter( autoApply = false )
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public static class ColorTypeConverter implements AttributeConverter<ColorType, String> {
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@Override
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public String convertToDatabaseColumn(ColorType attribute) {
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return attribute == null ? null : attribute.toExternalForm();
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}
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@Override
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public ColorType convertToEntityAttribute(String dbData) {
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return ColorType.fromExternalForm( dbData );
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}
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}
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}
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