openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/relations/TestTargetedIFaceRelations.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.    
 */
package org.apache.openjpa.persistence.relations;

import javax.persistence.EntityManager;

import junit.textui.TestRunner;
import org.apache.openjpa.persistence.test.SingleEMFTestCase;

/**
 * Perform basic operations on an entity with interface relations that use
 * the targetEntity attribute to set a concrete related type.
 *
 * @author Abe White
 */
public class TestTargetedIFaceRelations
    extends SingleEMFTestCase {

    public void setUp() {
        setUp(TargetedIFaceRelationParent.class);
    }

    public void testPersist() {
        TargetedIFaceRelationParent parent = new TargetedIFaceRelationParent();
        parent.setName("parent");
        TargetedIFaceRelationParent child = new TargetedIFaceRelationParent();
        child.setName("child");
        parent.setIFace(child);
        
        EntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        em.persist(parent);
        em.getTransaction().commit();
        long id = parent.getId();
        assertTrue(id != 0);
        em.close();

        em = emf.createEntityManager();
        parent = em.find(TargetedIFaceRelationParent.class, id);
        assertNotNull(parent);
        assertEquals("parent", parent.getName());
        assertNotNull(parent.getIFace());
        assertEquals("child", parent.getIFace().getName());
        assertEquals(TargetedIFaceRelationParent.class, 
            parent.getIFace().getClass());
        assertNull(((TargetedIFaceRelationParent) parent.getIFace()).
            getIFace());
        em.close();
    }

    public static void main(String[] args) {
        TestRunner.run(TestTargetedIFaceRelations.class);
    }
}