HHH-15453 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/fetch/FetchModeSubselectTest.java

@@ -0,0 +1,288 @@
+/*
+ * 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.fetch;
+
+import java.util.HashSet;
+import java.util.List;
+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.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinTable;
+import jakarta.persistence.ManyToMany;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@DomainModel(
+		annotatedClasses = {
+				FetchModeSubselectTest.User.class,
+				FetchModeSubselectTest.Role.class,
+				FetchModeSubselectTest.Agency.class
+		}
+)
+@SessionFactory
+@TestForIssue(jiraKey = "HHH-15453")
+public class FetchModeSubselectTest {
+
+	@BeforeEach
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					User ann = new User( 1, "Ann" );
+					User bob = new User( 2, "Bob" );
+
+					Role manager = new Role( 1, "manager" );
+					Role developer = new Role( 2, "developer" );
+
+					ann.addRole( manager );
+
+					Agency agency = new Agency( 100, "Test Agency" );
+
+					agency.addUser( ann );
+					agency.addUser( bob );
+
+					session.persist( ann );
+					session.persist( bob );
+					session.persist( manager );
+					session.persist( developer );
+					session.persist( agency );
+				}
+		);
+	}
+
+	@AfterEach
+	public void tearDown(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					session.createMutationQuery( "delete from User" ).executeUpdate();
+					session.createMutationQuery( "delete from Role" ).executeUpdate();
+					session.createMutationQuery( "delete from Agency" ).executeUpdate();
+				}
+		);
+	}
+
+	@Test
+	public void testSelectUserWithRole(SessionFactoryScope scope) {
+		scope.inSession(
+				session -> {
+					List<User> userList = session.createQuery( "FROM User WHERE id = 1", User.class ).list();
+					assertThat( userList.size() ).isEqualTo( 1 );
+					assertThat( userList.get( 0 ).getRoles().size() ).isEqualTo( 1 );
+				}
+		);
+	}
+
+	@Test
+	public void testGetUserWithRole(SessionFactoryScope scope) {
+		scope.inSession(
+				session -> {
+					User user = session.get( User.class, 1 );
+					assertThat( user ).isNotNull();
+					assertThat( user.getRoles().size() ).isEqualTo( 1 );
+				}
+		);
+	}
+
+	@Test
+	public void testSelectUserWithoutRole(SessionFactoryScope scope) {
+		scope.inSession(
+				session -> {
+					List<User> userList = session.createQuery( "FROM User WHERE id = 2", User.class ).list();
+					assertThat( userList.size() ).isEqualTo( 1 );
+					assertThat( userList.get( 0 ).getRoles().size() ).isEqualTo( 0 );
+				}
+		);
+	}
+
+	@Test
+	public void testGetUserWithoutRole(SessionFactoryScope scope) {
+		scope.inSession(
+				session -> {
+					User user = session.get( User.class, 2 );
+					assertThat( user ).isNotNull();
+					assertThat( user.getRoles().size() ).isEqualTo( 0 );
+				}
+		);
+	}
+
+	@Entity(name = "User")
+	@Table(name = "USER_TABLE")
+	public static class User {
+
+		private Integer id;
+		private String name;
+		private Agency agency;
+		private Set<Role> roles;
+
+		public User() {
+		}
+
+		public User(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+		@Id
+		@Column(name = "USER_ID")
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer userId) {
+			this.id = userId;
+		}
+
+		@Column(name = "USER_NAME")
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String userName) {
+			this.name = userName;
+		}
+
+		@ManyToOne
+		@JoinColumn(name = "AGENCY_ID")
+		public Agency getAgency() {
+			return agency;
+		}
+
+		public void setAgency(Agency agency) {
+			this.agency = agency;
+		}
+
+		@ManyToMany(cascade = CascadeType.PERSIST, fetch = FetchType.EAGER)
+		@JoinTable(
+				name = "USER_ROLE",
+				joinColumns = @JoinColumn(name = "USER_ID"),
+				inverseJoinColumns = @JoinColumn(name = "ROLE_ID"))
+		@Fetch(FetchMode.SUBSELECT)
+		public Set<Role> getRoles() {
+			return roles;
+		}
+
+		public void setRoles(Set<Role> roles) {
+			this.roles = roles;
+		}
+
+		public void addRole(Role role) {
+			if ( roles == null ) {
+				roles = new HashSet<>();
+			}
+			roles.add( role );
+		}
+
+	}
+
+	@Entity(name = "Role")
+	@Table(name = "ROLE_TABLE")
+	public static class Role {
+
+		private Integer id;
+		private String name;
+
+		public Role() {
+		}
+
+		public Role(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+		@Id
+		@Column(name = "ROLE_ID")
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer roleId) {
+			this.id = roleId;
+		}
+
+		@Column(name = "ROLE_NAME")
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String roleName) {
+			this.name = roleName;
+		}
+
+	}
+
+	@Entity(name = "Agency")
+	@Table(name = "AGENCY_TABLE")
+	public static class Agency {
+
+		private Integer id;
+		private String name;
+		private Set<User> users;
+
+		public Agency() {
+		}
+
+		public Agency(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+		@Id
+		@Column(name = "AGENCY_ID")
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer roleId) {
+			this.id = roleId;
+		}
+
+		@Column(name = "AGENCY_NAME")
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String roleName) {
+			this.name = roleName;
+		}
+
+		@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "agency")
+		@Fetch(FetchMode.SELECT)
+		public Set<User> getUsers() {
+			return users;
+		}
+
+		public void setUsers(Set<User> users) {
+			this.users = users;
+		}
+
+		public void addUser(User user) {
+			if ( users == null ) {
+				users = new HashSet<>();
+			}
+			users.add( user );
+			user.setAgency( this );
+		}
+	}
+}