HHH-16166 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/mapping/inheritance/joined/JoinedInheritanceSameAttributeNameTest.java

@@ -0,0 +1,164 @@
+/*
+ * 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.orm.test.mapping.inheritance.joined;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.Inheritance;
+import jakarta.persistence.InheritanceType;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Marco Belladelli
+ */
+@DomainModel(annotatedClasses = {
+		JoinedInheritanceSameAttributeNameTest.BaseObj.class,
+		JoinedInheritanceSameAttributeNameTest.Comment.class,
+		JoinedInheritanceSameAttributeNameTest.Post.class,
+		JoinedInheritanceSameAttributeNameTest.Author.class
+})
+@SessionFactory
+@JiraKey("HHH-16166")
+public class JoinedInheritanceSameAttributeNameTest {
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final Author author = new Author( "comments" );
+			author.setName( "Marco" );
+			final Post post = new Post();
+			final Comment comment = new Comment( post, author );
+			post.getComments().add( comment );
+			session.persist( post );
+			session.persist( comment );
+			session.persist( author );
+		} );
+	}
+
+	@AfterAll
+	public void tearDown(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			session.createMutationQuery( "delete from Comment" ).executeUpdate();
+			session.createMutationQuery( "delete from Post" ).executeUpdate();
+			session.createMutationQuery( "delete from Author" ).executeUpdate();
+		} );
+	}
+
+	@Test
+	public void testQuery(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final Post post = session.createQuery( "from Post", Post.class ).getSingleResult();
+			assertThat( post ).isNotNull();
+			assertThat( post.getComments() ).hasSize( 1 );
+			final Comment comment = post.getComments().iterator().next();
+			assertThat( comment.getPost() ).isEqualTo( post );
+			assertThat( comment.getAuthor().getName() ).isEqualTo( "Marco" );
+			assertThat( comment.getAuthor().getComments() ).isEqualTo( "comments" );
+		} );
+	}
+
+	@Entity(name = "BaseObj")
+	@Inheritance(strategy = InheritanceType.JOINED)
+	public static class BaseObj {
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		private String name;
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+	}
+
+	@Entity(name = "Comment")
+	@Table(name = "Comments")
+	public static class Comment extends BaseObj {
+		@ManyToOne
+		private Post post;
+
+		@ManyToOne
+		private Author author;
+
+		public Comment() {
+		}
+
+		public Comment(Post post, Author author) {
+			this.post = post;
+			this.author = author;
+		}
+
+		public Post getPost() {
+			return post;
+		}
+
+		public Author getAuthor() {
+			return author;
+		}
+	}
+
+	/**
+	 * This sub-entity has the same attribute name
+	 * as {@link Author} but with a different (Collection) type
+	 */
+	@Entity(name = "Post")
+	public static class Post extends BaseObj {
+		@OneToMany(mappedBy = "post")
+		private Set<Comment> comments;
+
+		public Post() {
+			this.comments = new HashSet<>();
+		}
+
+		public Set<Comment> getComments() {
+			return comments;
+		}
+	}
+
+	/**
+	 * This sub-entity has the same attribute name
+	 * as {@link Post} but with a different (SimpleValue) type
+	 */
+	@Entity(name = "Author")
+	public static class Author extends BaseObj {
+		private String comments;
+
+		public Author() {
+		}
+
+		public Author(String comments) {
+			this.comments = comments;
+		}
+
+		public String getComments() {
+			return comments;
+		}
+
+		public void setComments(String comments) {
+			this.comments = comments;
+		}
+	}
+}