From bd60712064c0a7df84b2fae6208fc8b202a13ab0 Mon Sep 17 00:00:00 2001
From: gtoison <guillaume.toison@tobam.fr>
Date: Wed, 29 Nov 2023 12:47:00 +0100
Subject: [PATCH] HHH-17483 Add test for issue

---
 .../collection/OneToManyInheritanceTest.java  | 199 ++++++++++++++++++
 1 file changed, 199 insertions(+)
 create mode 100644 hibernate-core/src/test/java/org/hibernate/orm/test/collection/OneToManyInheritanceTest.java

diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/collection/OneToManyInheritanceTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/collection/OneToManyInheritanceTest.java
new file mode 100644
index 000000000000..9ffadf87502f
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/collection/OneToManyInheritanceTest.java
@@ -0,0 +1,199 @@
+package org.hibernate.orm.test.collection;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import org.hibernate.annotations.Fetch;
+import org.hibernate.annotations.FetchMode;
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.DiscriminatorColumn;
+import jakarta.persistence.DiscriminatorType;
+import jakarta.persistence.DiscriminatorValue;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Inheritance;
+import jakarta.persistence.InheritanceType;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+import org.assertj.core.api.Assertions;
+
+@DomainModel(
+		annotatedClasses = {
+				OneToManyInheritanceTest.Food.class,
+				OneToManyInheritanceTest.Cheese.class,
+				OneToManyInheritanceTest.SmellyCheese.class,
+				OneToManyInheritanceTest.Refrigerator.class
+		}
+)
+@SessionFactory
+@TestForIssue(jiraKey = "HHH-17483")
+public class OneToManyInheritanceTest {
+
+	private static final Integer REFRIGERATOR_ID = 42;
+
+	@BeforeAll
+	public void prepare(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			Cheese cheese1 = new Cheese( 1, "Roquefort" );
+			SmellyCheese cheese2 = new SmellyCheese( 2, "Maroilles" );
+			SmellyCheese cheese3 = new SmellyCheese( 3, "Vieux Lille" );
+			Set<Cheese> cheeses = new HashSet<>();
+			cheeses.add( cheese1 );
+			cheeses.add( cheese2 );
+			cheeses.add( cheese3 );
+			
+			Refrigerator refrigerator = new Refrigerator( REFRIGERATOR_ID, "Fridge", cheeses );
+			
+			cheese1.setRefrigerator( refrigerator );
+			cheese2.setRefrigerator( refrigerator );
+			cheese3.setRefrigerator( refrigerator );
+			
+			session.persist( cheese1 );
+			session.persist( cheese2 );
+			session.persist( cheese3 );
+			session.persist( refrigerator );
+		} );
+	}
+
+	@Test
+	public void loadCollection(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			Refrigerator refrigerator = session.find( Refrigerator.class, REFRIGERATOR_ID );
+			Assertions.assertThat( refrigerator.getCheeses() ).hasSize( 3 );
+		} );
+	}
+
+	@Entity(name = "Refrigerator")
+	@Table(name = "Refrigerator")
+	static class Refrigerator {
+		@Id
+		private Integer id;
+		private String name;
+
+		@OneToMany(targetEntity = Cheese.class, mappedBy = "refrigerator")
+		private Set<Cheese> cheeses;
+
+		public Refrigerator() {
+		}
+
+		public Refrigerator(Integer id, String name, Collection<Cheese> cheeses) {
+			this.id = id;
+			this.name = name;
+			this.cheeses = new HashSet<>( cheeses );
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public Set<Cheese> getCheeses() {
+			return cheeses;
+		}
+
+		public void setCheeses(Set<Cheese> cheeses) {
+			this.cheeses = cheeses;
+		}
+
+	}
+
+	@Entity(name = "Food")
+	@Table(name = "Food")
+	@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
+	@DiscriminatorColumn(discriminatorType = DiscriminatorType.STRING, name = "type")
+	@DiscriminatorValue(value = "Food")
+	static class Food {
+
+		@Id
+		private Integer id;
+
+		private String name;
+		
+		@ManyToOne(fetch = FetchType.LAZY)
+		@Fetch(FetchMode.SELECT)
+		@JoinColumn(name = "refrigerator_id")
+		private Refrigerator refrigerator;
+
+		public Food() {
+		}
+
+		public Food(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public Refrigerator getRefrigerator() {
+			return refrigerator;
+		}
+
+		public void setRefrigerator(Refrigerator refrigerator) {
+			this.refrigerator = refrigerator;
+		}
+	}
+	
+	@Entity(name = "Cheese")
+	@DiscriminatorValue("Cheese")
+	static class Cheese extends Food {
+
+		public Cheese() {
+			super();
+		}
+
+		public Cheese(Integer id, String name) {
+			super(id, name);
+		}
+	}
+	
+	@Entity(name = "SmellyCheese")
+	@DiscriminatorValue("SmellyCheese")
+	static class SmellyCheese extends Cheese {
+
+		public SmellyCheese() {
+			super();
+		}
+
+		public SmellyCheese(Integer id, String name) {
+			super(id, name);
+		}
+	}
+}