HHH-12430 - Query Cache does not store eagerly fetched associations via JOIN FETCH

Add replicating test case

hibernate-core/src/test/java/org/hibernate/test/querycache/QueryCacheJoinFetchTest.java

@@ -0,0 +1,195 @@
+/*
+ * 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.test.querycache;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+import org.hibernate.annotations.NaturalId;
+import org.hibernate.annotations.QueryHints;
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+
+import org.hibernate.testing.FailureExpected;
+import org.hibernate.testing.TestForIssue;
+import org.junit.Test;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
+import static org.junit.Assert.assertEquals;
+
+/**
+ * @author Vlad Mihalcea
+ */
+@TestForIssue( jiraKey = "HHH-12430" )
+public class QueryCacheJoinFetchTest extends BaseEntityManagerFunctionalTestCase {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] {
+				Person.class,
+				Phone.class,
+		};
+	}
+
+	protected void addConfigOptions(Map options) {
+		options.put( AvailableSettings.USE_QUERY_CACHE, "true" );
+		options.put( AvailableSettings.USE_SECOND_LEVEL_CACHE, "true" );
+		options.put( AvailableSettings.GENERATE_STATISTICS, "true" );
+	}
+
+	@Test
+	@FailureExpected( jiraKey = "HHH-12430" )
+	public void testLifecycle() {
+		doInJPA( this::entityManagerFactory, entityManager -> {
+			Person person = new Person();
+			Phone phone1 = new Phone( "123-456-7890" );
+			Phone phone2 = new Phone( "321-654-0987" );
+
+			person.addPhone( phone1 );
+			person.addPhone( phone2 );
+			entityManager.persist( person );
+		} );
+
+		entityManagerFactory().getCache().evictAll();
+		entityManagerFactory().unwrap( SessionFactory.class ).getStatistics().clear();
+
+		Person person = doInJPA( this::entityManagerFactory, entityManager -> {
+			return entityManager.createQuery(
+				"select distinct p " +
+				"from Person p " +
+				"join fetch p.phones ph", Person.class )
+			.setHint( QueryHints.CACHEABLE, Boolean.TRUE )
+			.getSingleResult();
+		} );
+
+		assertEquals( 2, person.getPhones().size() );
+		assertEquals(
+				0,
+				entityManagerFactory().unwrap( SessionFactory.class ).getStatistics().getQueryCacheHitCount()
+		);
+
+		person = doInJPA( this::entityManagerFactory, entityManager -> {
+			entityManager.getEntityManagerFactory().getCache().evictAll();
+
+			return entityManager.createQuery(
+				"select distinct p " +
+				"from Person p " +
+				"join fetch p.phones ph", Person.class )
+			.setHint( QueryHints.CACHEABLE, Boolean.TRUE )
+			.getSingleResult();
+		} );
+
+		assertEquals(
+				1,
+				entityManagerFactory().unwrap( SessionFactory.class ).getStatistics().getQueryCacheHitCount()
+		);
+
+		assertEquals( 2, person.getPhones().size() );
+	}
+
+	@Entity(name = "Person")
+	@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+	public static class Person {
+
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		@OneToMany(mappedBy = "person", cascade = CascadeType.ALL, orphanRemoval = true)
+		@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+		private List<Phone> phones = new ArrayList<>();
+
+		public Person() {
+		}
+
+		public Person(Long id) {
+			this.id = id;
+		}
+
+		public List<Phone> getPhones() {
+			return phones;
+		}
+
+		public void addPhone(Phone phone) {
+			phones.add( phone );
+			phone.setPerson( this );
+		}
+
+		public void removePhone(Phone phone) {
+			phones.remove( phone );
+			phone.setPerson( null );
+		}
+	}
+
+	@Entity(name = "Phone")
+	@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+	public static class Phone {
+
+		@Id
+		@GeneratedValue
+		private Long id;
+
+		@NaturalId
+		@Column(name = "`number`", unique = true)
+		private String number;
+
+		@ManyToOne
+		private Person person;
+
+		public Phone() {
+		}
+
+		public Phone(String number) {
+			this.number = number;
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public String getNumber() {
+			return number;
+		}
+
+		public Person getPerson() {
+			return person;
+		}
+
+		public void setPerson(Person person) {
+			this.person = person;
+		}
+
+		@Override
+		public boolean equals(Object o) {
+			if ( this == o ) {
+				return true;
+			}
+			if ( o == null || getClass() != o.getClass() ) {
+				return false;
+			}
+			Phone phone = (Phone) o;
+			return Objects.equals( number, phone.number );
+		}
+
+		@Override
+		public int hashCode() {
+			return Objects.hash( number );
+		}
+	}
+}