HHH-11965 - Added test case.
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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.test.orphan.one2one;
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import javax.persistence.CascadeType;
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import javax.persistence.Entity;
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import javax.persistence.FetchType;
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import javax.persistence.GeneratedValue;
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import javax.persistence.GenerationType;
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import javax.persistence.Id;
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import javax.persistence.OneToOne;
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import org.hibernate.Hibernate;
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import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
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import org.junit.Test;
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import org.hibernate.testing.TestForIssue;
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import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
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import static org.junit.Assert.assertNotNull;
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/**
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* A test that shows orphan-removal is triggered when an entity has a lazy one-to-one
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* mapping with property-based annotations and the getter method unwraps the proxy
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* inline during invocation leading to constraint violation due to attempted removal
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* of the associated entity.
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*
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* This test case documents old behavior so that it can be preserved but allowing
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* us to also maintain the fix for {@code HHH-9663}.
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*
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* @author Chris Cranford
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*/
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@TestForIssue( jiraKey = "HHH-11965" )
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public class OneToOneProxyOrphanRemovalTest extends BaseEntityManagerFunctionalTestCase {
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@Override
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protected Class<?>[] getAnnotatedClasses() {
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return new Class<?>[] { Child.class, Parent.class };
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}
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@Test
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public void testUnproxyOneToOneWithCascade() {
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Integer pId = doInJPA( this::entityManagerFactory, entityManager -> {
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Parent p = new Parent();
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p.setChild( new Child() );
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entityManager.persist( p );
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return p.getId();
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} );
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// This lambda fails because during flush the cascade of operations determine that the entity state
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// maintains the unwrapped proxy (from the getter) does not match the value maintained in the persistence
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// context (which is the proxy).
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//
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// This results in a comparison that deems the values different and allows the orphan-removal to proceed,
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// leading to a constraint violation because the 'Child' entity continues to be referentially linked to
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// the 'Parent' entity.
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//
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// In short, no cascade of orphan-removal should be invoked for this scenario, thus avoiding the raised
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// constraint violation exception.
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doInJPA( this::entityManagerFactory, entityManager -> {
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assertNotNull( entityManager.find( Parent.class, pId ) );
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} );
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}
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@Entity(name = "Child")
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public static class Child {
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private Integer id;
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@Id
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@GeneratedValue(strategy = GenerationType.AUTO)
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public Integer getId() {
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return id;
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}
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public void setId(Integer id) {
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this.id = id;
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}
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}
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@Entity(name = "Parent")
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public static class Parent {
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private Integer id;
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private Child child;
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@Id
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@GeneratedValue(strategy = GenerationType.AUTO)
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public Integer getId() {
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return id;
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}
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public void setId(Integer id) {
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this.id = id;
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}
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@OneToOne(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
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public Child getChild() {
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return (Child) Hibernate.unproxy( child );
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}
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public void setChild(Child child) {
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this.child = child;
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}
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}
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}
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