HHH-16126 Add test for issue

Author: dreab8

hibernate-core/src/test/java/org/hibernate/orm/test/caching/CachingAndVersionTest.java

@@ -0,0 +1,129 @@
+package org.hibernate.orm.test.caching;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+
+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.Cacheable;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import jakarta.persistence.Version;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@DomainModel(
+		annotatedClasses = {
+				CachingAndVersionTest.Domain.class,
+				CachingAndVersionTest.Server.class
+		}
+)
+@SessionFactory
+@TestForIssue(jiraKey = "HHH-16126")
+public class CachingAndVersionTest {
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					Domain domain = new Domain();
+					Server server = new Server();
+					domain.addServer( server );
+
+					session.persist( domain );
+					session.persist( server );
+				}
+		);
+	}
+
+	@Test
+	public void testSelect(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					List<Domain> domains =
+							session.createQuery(
+											"SELECT DISTINCT d FROM Domain d LEFT JOIN FETCH d.servers s",
+											Domain.class
+									)
+									.getResultList();
+					assertThat( domains.size() ).isEqualTo( 1 );
+				}
+		);
+	}
+
+	@Entity(name = "Domain")
+	@Table(name = "DOMAIN_TABLE")
+	public static class Domain {
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		@Version
+		private Integer rowVersion;
+
+		@OneToMany(mappedBy = "domain")
+		private Set<Server> servers = new HashSet<>();
+
+		public Long getId() {
+			return id;
+		}
+
+		public Integer getRowVersion() {
+			return rowVersion;
+		}
+
+		public Set<Server> getServers() {
+			return servers;
+		}
+
+		public void addServer(Server server) {
+			servers.add( server );
+			server.setDomain( this );
+		}
+	}
+
+	@Entity(name = "Server")
+	@Table(name = "SERVER_TABLE")
+	@Cacheable
+	@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+	public static class Server {
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		@ManyToOne
+		private Domain domain;
+
+		@Version
+		private Integer rowVersion;
+
+		public Long getId() {
+			return id;
+		}
+
+		public Domain getDomain() {
+			return domain;
+		}
+
+		public void setDomain(Domain domain) {
+			this.domain = domain;
+		}
+
+		public Integer getRowVersion() {
+			return rowVersion;
+		}
+	}
+}