HHH-17704 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/proxy/DetachedProxyAsQueryParameterTest.java

@@ -0,0 +1,172 @@
+package org.hibernate.orm.test.proxy;
+
+import org.hibernate.Hibernate;
+import org.hibernate.LazyInitializationException;
+import org.hibernate.query.Query;
+
+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.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Inheritance;
+import jakarta.persistence.InheritanceType;
+import jakarta.persistence.ManyToOne;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@DomainModel(
+		annotatedClasses = {
+				DetachedProxyAsQueryParameterTest.Department.class,
+				DetachedProxyAsQueryParameterTest.BasicDepartment.class,
+				DetachedProxyAsQueryParameterTest.SpecialDepartment.class,
+				DetachedProxyAsQueryParameterTest.Employee.class
+		}
+)
+@SessionFactory
+@JiraKey("HHH-17704")
+public class DetachedProxyAsQueryParameterTest {
+
+	private static final Integer EMPLOYEE_ID = 1;
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					SpecialDepartment department = new SpecialDepartment( 2, "dep1" );
+					Employee employee = new Employee( EMPLOYEE_ID, "Fab", department );
+					session.persist( department );
+					session.persist( employee );
+				}
+		);
+	}
+
+	@Test
+	public void testQuery(SessionFactoryScope scope) {
+		Employee employee = scope.fromTransaction(
+				session ->
+						session.find( Employee.class, EMPLOYEE_ID )
+		);
+		assertFalse( Hibernate.isInitialized( employee.getDepartment() ) );
+		scope.inSession(
+				session -> {
+					Query<Employee> query = session.createQuery(
+							"select e from Employee e where e.department = :department",
+							Employee.class
+					);
+					query.setParameter( "department", employee.getDepartment() );
+					query.list();
+				}
+		);
+		scope.inSession(
+				session -> {
+					session.createQuery(
+									"select d from Department d where d = :department" )
+							.setParameter( "department", employee.getDepartment() ).list();
+				}
+		);
+
+
+		assertThrows(
+				LazyInitializationException.class, () -> {
+					scope.inSession(
+							session -> {
+								// In order to validate the parameter and check that it is an instance of SpecialDepartment
+								// the Department proxy have to be initialized but being a detached instance
+								// a LazyInitializationException is thrown
+								session.createQuery(
+										"select d from SpecialDepartment d where d = :department"
+								).setParameter( "department", employee.getDepartment() ).list();
+							}
+					);
+				}
+		);
+	}
+
+	@Entity(name = "Department")
+	@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
+	public static class Department {
+		@Id
+		private Integer id;
+
+		public Department() {
+		}
+
+		public Department(Integer id) {
+			this.id = id;
+		}
+
+		public Integer getId() {
+			return id;
+		}
+	}
+
+	@Entity(name = "BasicDepartment")
+	public static class BasicDepartment extends Department {
+
+
+		private String name;
+
+		public BasicDepartment() {
+		}
+
+		public BasicDepartment(Integer id, String name) {
+			super( id );
+			this.name = name;
+		}
+
+
+		public String getName() {
+			return name;
+		}
+	}
+
+	@Entity(name = "SpecialDepartment")
+	public static class SpecialDepartment extends BasicDepartment {
+		public SpecialDepartment() {
+		}
+
+		public SpecialDepartment(Integer id, String name) {
+			super( id, name );
+		}
+	}
+
+	@Entity(name = "Employee")
+	public static class Employee {
+
+		@Id
+		private Integer id;
+
+		private String name;
+
+		@ManyToOne(fetch = FetchType.LAZY)
+		private Department department;
+
+		public Employee() {
+		}
+
+		public Employee(Integer id, String name, Department department) {
+			this.id = id;
+			this.name = name;
+			this.department = department;
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public Department getDepartment() {
+			return department;
+		}
+	}
+}