HHH-17497 - Add test case for issue (testScrollWithoutFetch)
Signed-off-by: Jan Schatteman <jschatte@redhat.com>
This commit is contained in:
Jan Schatteman
Christian Beikov
parent
a971f897e9
commit
693516ab92
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/*
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* Hibernate, Relational Persistence for Idiomatic Java
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*
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* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
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* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
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*/
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package org.hibernate.orm.test.jpa.criteria.fetchscroll;
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import java.util.ArrayList;
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import java.util.List;
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import org.hibernate.ScrollableResults;
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import org.hibernate.orm.test.hqlfetchscroll.Child;
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import org.hibernate.orm.test.hqlfetchscroll.Parent;
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import org.hibernate.testing.orm.junit.DomainModel;
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import org.hibernate.testing.orm.junit.Jira;
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import org.hibernate.testing.orm.junit.SessionFactory;
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import org.hibernate.testing.orm.junit.SessionFactoryScope;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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import jakarta.persistence.criteria.CriteriaBuilder;
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import jakarta.persistence.criteria.CriteriaQuery;
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import jakarta.persistence.criteria.Fetch;
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import jakarta.persistence.criteria.JoinType;
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import jakarta.persistence.criteria.Path;
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import jakarta.persistence.criteria.Root;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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@DomainModel(
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xmlMappings = "org/hibernate/orm/test/hqlfetchscroll/ParentChild.hbm.xml"
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)
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@SessionFactory
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public class CriteriaScrollFetchTest {
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@Test
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public final void testListWithFetch(SessionFactoryScope scope) {
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scope.inSession(
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s -> {
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CriteriaBuilder cb = s.getCriteriaBuilder();
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CriteriaQuery<Parent> cq = cb.createQuery(Parent.class);
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Root<Parent> from = cq.distinct( true ).from( Parent.class );
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CriteriaQuery<Parent> select = cq.select(from);
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from.fetch( "children", JoinType.LEFT );
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List<Parent> l = s.createQuery( select ).list();
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assertResultFromAllParents(l);
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}
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);
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}
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@Test
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public final void testListWithoutFetch(SessionFactoryScope scope) {
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scope.inSession(
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s -> {
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CriteriaBuilder cb = s.getCriteriaBuilder();
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CriteriaQuery<Parent> cq = cb.createQuery(Parent.class);
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Root<Parent> from = cq.distinct( true ).from( Parent.class );
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CriteriaQuery<Parent> select = cq.select(from);
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List<Parent> l = s.createQuery( select ).list();
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assertResultFromAllParents(l);
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}
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);
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}
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@Test
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@Jira("https://hibernate.atlassian.net/browse/HHH-17497")
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public final void testScrollWithFetch(SessionFactoryScope scope) {
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scope.inSession(
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s -> {
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CriteriaBuilder cb = s.getCriteriaBuilder();
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CriteriaQuery<Parent> cq = cb.createQuery(Parent.class);
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Root<Parent> from = cq.distinct( true ).from( Parent.class );
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CriteriaQuery<Parent> select = cq.select(from);
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Fetch<Parent, Child> c = from.fetch( "children", JoinType.LEFT );
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cq.orderBy( cb.asc(from.get("id")), cb.asc(((Path<?>) c).get("id")) );
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ScrollableResults<Parent> sr = s.createQuery( select ).scroll();
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assertResultFromAllParents(makeList(sr));
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}
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);
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}
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@Test
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@Jira("https://hibernate.atlassian.net/browse/HHH-17497")
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public final void testScrollWithoutFetch(SessionFactoryScope scope) {
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scope.inSession(
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s -> {
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CriteriaBuilder cb = s.getCriteriaBuilder();
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CriteriaQuery<Parent> cq = s.getCriteriaBuilder().createQuery(Parent.class);
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Root<Parent> from = cq.distinct( true ).from( Parent.class );
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CriteriaQuery<Parent> select = cq.select(from);
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cq.orderBy( cb.asc(from.get("id")) );
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ScrollableResults<Parent> sr = s.createQuery( select ).scroll();
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assertResultFromAllParents(makeList(sr));
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}
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);
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}
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private List<Parent> makeList(ScrollableResults<Parent> results) {
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List<Parent> list = new ArrayList<>();
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while (results.next()) {
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list.add(results.get());
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}
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results.close();
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return list;
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}
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private void assertResultFromOneParent(Parent parent) {
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assertEquals(
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3,
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parent.getChildren().size(),
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"parent " + parent + " has incorrect collection(" + parent.getChildren() + ")."
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);
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}
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private void assertResultFromAllParents(List<Parent> list) {
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assertEquals( 2, list.size(), "list is not correct size: " );
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for ( Parent aList : list ) {
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assertResultFromOneParent( aList );
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}
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}
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@BeforeEach
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protected void prepareTest(SessionFactoryScope scope) {
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scope.inTransaction(
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session -> {
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Child child_1_1 = new Child( "achild1-1" );
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Child child_1_2 = new Child( "ychild1-2" );
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Child child_1_3 = new Child( "dchild1-3" );
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Child child_2_1 = new Child( "bchild2-1" );
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Child child_2_2 = new Child( "cchild2-2" );
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Child child_2_3 = new Child( "zchild2-3" );
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session.persist( child_1_1 );
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session.persist( child_2_1 );
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session.persist( child_1_2 );
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session.persist( child_2_2 );
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session.persist( child_1_3 );
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session.persist( child_2_3 );
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session.flush();
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Parent p1 = new Parent( "parent1" );
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p1.addChild( child_1_1 );
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p1.addChild( child_1_2 );
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p1.addChild( child_1_3 );
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session.persist( p1 );
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Parent p2 = new Parent( "parent2" );
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p2.addChild( child_2_1 );
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p2.addChild( child_2_2 );
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p2.addChild( child_2_3 );
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session.persist( p2 );
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}
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);
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}
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@AfterEach
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protected void cleanupTest(SessionFactoryScope scope) {
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scope.inTransaction(
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session -> {
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session.createMutationQuery( "delete from Child" ).executeUpdate();
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session.createMutationQuery( "delete from Parent").executeUpdate();
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}
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);
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}
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}
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@ -27,7 +27,7 @@
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</class>
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<class name="Child" table="chlidren">
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<class name="Child" table="children">
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<!-- A numeric id must be the <id> field. Some databases (Sybase, etc.)
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require identifier columns in order to support scrollable results. -->
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<id name="id">
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