HHH-16123 Add test for issue
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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.orm.test.jpa.criteria;
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import java.time.LocalDate;
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import java.util.ArrayList;
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import java.util.List;
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import org.hibernate.testing.orm.junit.DomainModel;
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import org.hibernate.testing.orm.junit.SessionFactory;
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import org.hibernate.testing.orm.junit.SessionFactoryScope;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import jakarta.persistence.CascadeType;
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import jakarta.persistence.Entity;
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import jakarta.persistence.GeneratedValue;
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import jakarta.persistence.Id;
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import jakarta.persistence.Inheritance;
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import jakarta.persistence.InheritanceType;
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import jakarta.persistence.JoinColumn;
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import jakarta.persistence.ManyToOne;
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import jakarta.persistence.MappedSuperclass;
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import jakarta.persistence.OneToMany;
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import jakarta.persistence.criteria.CriteriaBuilder;
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import jakarta.persistence.criteria.CriteriaQuery;
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import jakarta.persistence.criteria.Join;
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import jakarta.persistence.criteria.Root;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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/**
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* @author Marco Belladelli
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*/
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@SessionFactory
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@DomainModel(annotatedClasses = {
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TreatAbstractSuperclassTest.LongBook.class,
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TreatAbstractSuperclassTest.ShortBook.class,
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TreatAbstractSuperclassTest.Author.class,
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TreatAbstractSuperclassTest.AuthorParticipation.class,
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})
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public class TreatAbstractSuperclassTest {
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@BeforeAll
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public void setUp(SessionFactoryScope scope) {
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scope.inTransaction( session -> {
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final Author author = new Author( "Frank Herbert" );
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final ShortBook book = new ShortBook( "Dune" );
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final AuthorParticipation participation = new AuthorParticipation( author, book );
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book.getParticipations().add( participation );
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session.persist( author );
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session.persist( book );
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session.persist( participation );
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} );
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}
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@AfterAll
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public void tearDown(SessionFactoryScope scope) {
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scope.inTransaction( session -> {
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session.createMutationQuery( "delete from AuthorParticipation" ).executeUpdate();
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session.createMutationQuery( "delete from Author" ).executeUpdate();
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session.createMutationQuery( "delete from Publication" ).executeUpdate();
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} );
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}
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@Test
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public void testJoin(SessionFactoryScope scope) {
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scope.inTransaction( session -> {
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final CriteriaBuilder cb = session.getCriteriaBuilder();
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final CriteriaQuery<String> criteria = cb.createQuery( String.class );
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final Root<Publication> publicationRoot = criteria.from( Publication.class );
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// Treat as nested abstract superclass
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final Root<Book> bookRoot = cb.treat( publicationRoot, Book.class );
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final Join<Book, AuthorParticipation> join = bookRoot.join( "participations" );
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criteria.select( bookRoot.get( "title" ) ).where( cb.equal(
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join.get( "author" ).get( "name" ),
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"Frank Herbert"
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) );
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assertEquals( "Dune", session.createQuery( criteria ).getSingleResult() );
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} );
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}
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@Test
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public void testSubclassJoin(SessionFactoryScope scope) {
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scope.inTransaction( session -> {
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final CriteriaBuilder cb = session.getCriteriaBuilder();
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final CriteriaQuery<String> criteria = cb.createQuery( String.class );
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final Root<Publication> publicationRoot = criteria.from( Publication.class );
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// Treat as child of nested abstract superclass
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final Root<ShortBook> shortBookRoot = cb.treat( publicationRoot, ShortBook.class );
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final Join<ShortBook, AuthorParticipation> join = shortBookRoot.join( "participations" );
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criteria.select( shortBookRoot.get( "title" ) ).where( cb.equal(
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join.get( "author" ).get( "name" ),
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"Frank Herbert"
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) );
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assertEquals( "Dune", session.createQuery( criteria ).getSingleResult() );
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} );
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}
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@MappedSuperclass
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public static class BaseEntity {
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@Id
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@GeneratedValue
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private long id;
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}
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@Entity(name = "Publication")
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@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
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public abstract static class Publication extends BaseEntity {
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private String title;
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public Publication() {
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}
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public Publication(String title) {
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this.title = title;
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}
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}
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@Entity(name = "Book")
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public static abstract class Book extends Publication {
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@OneToMany(mappedBy = "book", cascade = CascadeType.REMOVE)
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private List<AuthorParticipation> participations = new ArrayList<>();
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public Book() {
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}
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public Book(String title) {
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super( title );
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}
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public List<AuthorParticipation> getParticipations() {
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return participations;
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}
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}
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@Entity(name = "LongBook")
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public static class LongBook extends Book {
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public LongBook() {
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}
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public LongBook(String title) {
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super( title );
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}
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}
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@Entity(name = "ShortBook")
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public static class ShortBook extends Book {
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public ShortBook() {
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}
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public ShortBook(String title) {
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super( title );
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}
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}
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@Entity(name = "Author")
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public static class Author extends BaseEntity {
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private String name;
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public Author() {
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}
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public Author(String name) {
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this.name = name;
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}
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}
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@Entity(name = "AuthorParticipation")
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public static class AuthorParticipation extends BaseEntity {
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@ManyToOne
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@JoinColumn(name = "author_id", nullable = false)
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private Author author;
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@ManyToOne
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@JoinColumn(name = "book_id", nullable = false)
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private Book book;
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public AuthorParticipation() {
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}
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public AuthorParticipation(Author author, Book book) {
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this.author = author;
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this.book = book;
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}
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}
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}
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