HHH-9028 Test case: when second level cache is enabled, the session returns the objects even if the class doesn't match

hibernate-core/src/test/java/org/hibernate/test/cache/polymorphism/AbstractCachedItem.java

@@ -0,0 +1,68 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * Copyright (c) 2010-2014, 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.test.cache.polymorphism;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+import org.hibernate.annotations.Cache;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+import org.hibernate.annotations.GenericGenerator;
+
+/**
+ * @author Steve Ebersole
+ * @author Guillaume Smet
+ */
+@Entity
+@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+public class AbstractCachedItem {
+	private Long id;
+	private String name;
+
+	public AbstractCachedItem() {
+	}
+
+	public AbstractCachedItem(String name) {
+		this.name = name;
+	}
+
+	@Id
+	@GeneratedValue(generator = "increment")
+	@GenericGenerator(name = "increment", strategy = "increment")
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}

hibernate-core/src/test/java/org/hibernate/test/cache/polymorphism/CachedItem1.java

@@ -0,0 +1,43 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * Copyright (c) 2014, 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.test.cache.polymorphism;
+
+import javax.persistence.Entity;
+
+
+/**
+ * @author Guillaume Smet
+ */
+@Entity
+public class CachedItem1 extends AbstractCachedItem {
+
+	public CachedItem1() {
+		super();
+	}
+
+	public CachedItem1(String name) {
+		super( name );
+	}
+	
+}

hibernate-core/src/test/java/org/hibernate/test/cache/polymorphism/CachedItem2.java

@@ -0,0 +1,43 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * Copyright (c) 2014, 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.test.cache.polymorphism;
+
+import javax.persistence.Entity;
+
+
+/**
+ * @author Guillaume Smet
+ */
+@Entity
+public class CachedItem2 extends AbstractCachedItem {
+
+	public CachedItem2() {
+		super();
+	}
+
+	public CachedItem2(String name) {
+		super( name );
+	}
+	
+}

hibernate-core/src/test/java/org/hibernate/test/cache/polymorphism/PolymorphicCacheTest.java

@@ -0,0 +1,81 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * Copyright (c) 2012-2014, 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.test.cache.polymorphism;
+
+import static org.junit.Assert.assertNull;
+
+import org.hibernate.Session;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Test;
+
+/**
+ * @author Guillaume Smet
+ */
+@TestForIssue(jiraKey = "HHH-9028")
+public class PolymorphicCacheTest extends BaseCoreFunctionalTestCase {
+	@Override
+	protected void configure(Configuration configuration) {
+		super.configure( configuration );
+	}
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { AbstractCachedItem.class, CachedItem1.class, CachedItem2.class };
+	}
+
+	@Test
+	public void testPolymorphismAndCache() throws Exception {
+		final CachedItem1 cachedItem1 = new CachedItem1( "name 1" );
+		final CachedItem2 cachedItem2 = new CachedItem2( "name 2" );
+
+		// create the 2 items
+		Session s = openSession();
+		s.beginTransaction();
+		s.save( cachedItem1 );
+		s.save( cachedItem2 );
+		s.getTransaction().commit();
+		s.close();
+
+		s = openSession();
+		s.beginTransaction();
+		// As the first item is supposed to be a CachedItem1, it shouldn't be returned.
+		// Note that the Session API is not type safe but, when using the EntityManager.find API, you get a ClassCastException
+		// if calling find returns the object.
+		Object thisObjectShouldBeNull = s.get( CachedItem2.class, cachedItem1.getId() );
+		assertNull( thisObjectShouldBeNull );
+		s.getTransaction().commit();
+		s.close();
+
+		// cleanup
+		s = openSession();
+		s.beginTransaction();
+		s.delete( cachedItem1 );
+		s.delete( cachedItem2 );
+		s.getTransaction().commit();
+		s.close();
+	}
+
+}