HHH-8855 Failing test for multiple @ManyToOnes load graph

Author: Christian Bauer

hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/graphs/find/FindEntityGraphTests.java

@@ -0,0 +1,123 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * Copyright (c) 2013, Red Hat Inc. or third-party contributors as
+ * indicated by the @author tags or express copyright attribution
+ * statements applied by the authors.  All third-party contributions are
+ * distributed under license by Red Hat Inc.
+ *
+ * This copyrighted material is made available to anyone wishing to use, modify,
+ * copy, or redistribute it subject to the terms and conditions of the GNU
+ * Lesser General Public License, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this distribution; if not, write to:
+ * Free Software Foundation, Inc.
+ * 51 Franklin Street, Fifth Floor
+ * Boston, MA  02110-1301  USA
+ */
+package org.hibernate.jpa.test.graphs.find;
+
+import org.hibernate.Hibernate;
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+import org.junit.Test;
+
+import javax.persistence.*;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Christian Bauer
+ */
+public class FindEntityGraphTests extends BaseEntityManagerFunctionalTestCase {
+
+    @Override
+    protected Class<?>[] getAnnotatedClasses() {
+        return new Class[]{Foo.class, Bar.class, Baz.class};
+    }
+
+    @Test
+    public void loadParallelManyToOne() {
+        EntityManager em = getOrCreateEntityManager();
+        em.getTransaction().begin();
+
+        Bar bar = new Bar();
+        bar.id = 1;
+        bar.name = "bar";
+        em.persist(bar);
+
+        Baz baz = new Baz();
+        baz.id = 2;
+        baz.name = "baz";
+        em.persist(baz);
+
+        Foo foo = new Foo();
+        foo.id = 3;
+        foo.name = "foo";
+        foo.bar = bar;
+        foo.baz = baz;
+        em.persist(foo);
+
+        em.getTransaction().commit();
+        em.close();
+
+        em = getOrCreateEntityManager();
+        em.getTransaction().begin();
+
+        EntityGraph<Foo> fooGraph = em.createEntityGraph(Foo.class);
+        fooGraph.addAttributeNodes("bar", "baz");
+
+        Map<String, Object> properties = new HashMap<String, Object>();
+        properties.put("javax.persistence.loadgraph", fooGraph);
+
+        Foo result = em.find(Foo.class, foo.id, properties);
+
+        assertTrue(Hibernate.isInitialized(result));
+        assertTrue(Hibernate.isInitialized(result.bar));
+        assertTrue(Hibernate.isInitialized(result.baz));
+
+        em.getTransaction().commit();
+        em.close();
+    }
+
+    @Entity
+    public static class Foo {
+
+        @Id
+        public Integer id;
+
+        public String name;
+
+        @ManyToOne(fetch = FetchType.LAZY)
+        public Bar bar;
+
+        @ManyToOne(fetch = FetchType.LAZY)
+        public Baz baz;
+    }
+
+    @Entity
+    public static class Bar {
+
+        @Id
+        public Integer id;
+
+        public String name;
+    }
+
+    @Entity
+    public static class Baz {
+
+        @Id
+        public Integer id;
+
+        public String name;
+    }
+
+}