HHH-14916 : test case written.

hibernate-core/src/test/java/org/hibernate/query/criteria/internal/hhh14916/Author.java

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+package org.hibernate.query.criteria.internal.hhh14916;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+
+@Entity
+public class Author {
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	public Long authorId;
+
+	@Column
+	public String name;
+
+	@OneToMany(fetch = FetchType.LAZY, mappedBy = "author", orphanRemoval = true, cascade = CascadeType.ALL)
+	public List<Book> books = new ArrayList<>();
+}

hibernate-core/src/test/java/org/hibernate/query/criteria/internal/hhh14916/Book.java

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+package org.hibernate.query.criteria.internal.hhh14916;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
+@Entity
+public class Book {
+	
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	public Long bookId;
+
+	@Column
+	public String name;
+
+	@ManyToOne(fetch = FetchType.LAZY, optional = false)
+	@JoinColumn(name = "author_id", nullable = false)
+	public Author author;
+
+	@OneToMany(fetch = FetchType.LAZY, mappedBy = "book", orphanRemoval = true, cascade = CascadeType.ALL)
+	public List<Chapter> chapters = new ArrayList<>();
+}

hibernate-core/src/test/java/org/hibernate/query/criteria/internal/hhh14916/Chapter.java

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+package org.hibernate.query.criteria.internal.hhh14916;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Chapter {
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	public Long chapterId;
+
+	public String name;
+
+	@ManyToOne(fetch = FetchType.LAZY, optional = false)
+	@JoinColumn(name = "book_id", nullable = false)
+	public Book book;
+}

hibernate-core/src/test/java/org/hibernate/query/criteria/internal/hhh14916/HHH14916Test.java

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+package org.hibernate.query.criteria.internal.hhh14916;
+
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+import org.hibernate.testing.TestForIssue;
+import static org.junit.Assert.assertEquals;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.JoinType;
+import javax.persistence.criteria.ListJoin;
+import javax.persistence.criteria.Predicate;
+import javax.persistence.criteria.Root;
+
+@TestForIssue( jiraKey = "HHH-14916" )
+public class HHH14916Test extends BaseEntityManagerFunctionalTestCase {
+	
+	@Before
+	public void before() {
+		populateData();
+	}
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] { Author.class, Book.class, Chapter.class };
+	}
+
+	@Test
+	public void testJoinOnFetchNoExceptionThrow() {
+		doInJPA( this::entityManagerFactory, entityManager -> {
+
+			final CriteriaBuilder builder = entityManager.getCriteriaBuilder();
+			final CriteriaQuery<Author> query = builder.createQuery(Author.class);
+
+			final Root<Author> root = query.from(Author.class);
+			final ListJoin<Author, Book> authorBookJoin =  (ListJoin)root.fetch("books", JoinType.LEFT);
+
+			final ListJoin<Book, Chapter> bookChapterJoin = authorBookJoin.joinList("chapters", JoinType.LEFT);
+
+			final Predicate finalPredicate = builder.equal(bookChapterJoin.get("name"), "Overview of HTTP");
+			query.where(finalPredicate);
+
+			Author author = entityManager.createQuery(query).getSingleResult();
+
+			assertEquals(author.name, "David Gourley");
+			assertEquals(author.books.get(0).name, "HTTP Definitive guide");
+			assertEquals(author.books.get(0).chapters.get(0).name, "Overview of HTTP");
+		} );
+	}
+
+	public void populateData() {
+		doInJPA(this::entityManagerFactory, entityManager -> {	
+			// Insert data
+			Chapter chapter = new Chapter();
+			chapter.name = "Overview of HTTP";
+			
+			Book book = new Book();
+			book.name = "HTTP Definitive guide";
+	
+			Author author = new Author();
+			author.name = "David Gourley";
+	
+			book.chapters.add(chapter);
+			author.books.add(book);
+	
+			chapter.book = book;
+			book.author = author;
+	
+			entityManager.persist(author);
+		});
+	}
+}