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* distributed with this work for additional information
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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package org.apache.openjpa.persistence.discriminator;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.apache.openjpa.jdbc.meta.ClassMapping;
import org.apache.openjpa.jdbc.meta.Discriminator;
import org.apache.openjpa.meta.JavaTypes;
import org.apache.openjpa.persistence.test.SingleEMFTestCase;
public class TestDiscriminatorTypes extends SingleEMFTestCase {
public void setUp() {
super.setUp(CharAbstractEntity.class, CharLeafEntity.class,
CharRootEntity.class, IntegerAbstractEntity.class,
IntegerLeafEntity.class, IntegerRootEntity.class,
StringAbstractEntity.class, StringLeafEntity.class,
StringRootEntity.class, CLEAR_TABLES);
}
public void testCharDiscriminators() {
EntityManager em = emf.createEntityManager(); // load types
Discriminator discrim = getMapping("CharAbstractEntity")
.getDiscriminator();
assertEquals(new Character('C'), discrim.getValue()); // Generated
assertEquals(JavaTypes.CHAR, discrim.getJavaType());
discrim = getMapping("chrLeaf").getDiscriminator();
assertEquals(new Character('c'), discrim.getValue());
assertEquals(JavaTypes.CHAR, discrim.getJavaType());
discrim = getMapping("CharRootEntity").getDiscriminator();
assertEquals(new Character('R'), discrim.getValue());
assertEquals(JavaTypes.CHAR, discrim.getJavaType());
CharLeafEntity leaf = new CharLeafEntity();
CharRootEntity root = new CharRootEntity();
em.getTransaction().begin();
em.persist(leaf);
em.persist(root);
em.getTransaction().commit();
em.refresh(leaf);
em.refresh(root);
em.clear();
CharLeafEntity leaf2 = em.find(CharLeafEntity.class, leaf.getId());
CharRootEntity root2 = em.find(CharRootEntity.class, root.getId());
assertNotNull(leaf2);
assertNotNull(root2);
em.close();
}
public void testIntDiscriminators() {
EntityManager em = emf.createEntityManager(); // load the types
Discriminator discrim = getMapping("IntegerAbstractEntity")
.getDiscriminator();
assertEquals(new Integer("IntegerAbstractEntity".hashCode()), discrim
.getValue()); // Generated value
assertEquals(JavaTypes.INT, discrim.getJavaType());
discrim = getMapping("intLeaf").getDiscriminator();
assertEquals(new Integer("intLeaf".hashCode()), discrim.getValue());
assertEquals(JavaTypes.INT, discrim.getJavaType());
discrim = getMapping("IntegerRootEntity").getDiscriminator();
assertEquals(new Integer(10101), discrim.getValue());
assertEquals(JavaTypes.INT, discrim.getJavaType());
IntegerLeafEntity leaf = new IntegerLeafEntity();
IntegerRootEntity root = new IntegerRootEntity();
em.getTransaction().begin();
em.persist(leaf);
em.persist(root);
em.getTransaction().commit();
em.refresh(leaf);
em.refresh(root);
em.clear();
IntegerLeafEntity leaf2 =
em.find(IntegerLeafEntity.class, leaf.getId());
IntegerRootEntity root2 =
em.find(IntegerRootEntity.class, root.getId());
assertNotNull(leaf2);
assertNotNull(root2);
em.close();
}
public void testStringDiscriminators() {
EntityManager em = emf.createEntityManager(); // load the types
Discriminator discrim = getMapping("StringAbstractEntity")
.getDiscriminator();
assertEquals("StringAbstractEntity", discrim.getValue()); // Generated
assertEquals(JavaTypes.STRING, discrim.getJavaType());
discrim = getMapping("strLeaf").getDiscriminator();
assertEquals("strLeaf", discrim.getValue());
assertEquals(JavaTypes.STRING, discrim.getJavaType());
discrim = getMapping("StringRootEntity").getDiscriminator();
assertEquals("StringRoot", discrim.getValue());
assertEquals(JavaTypes.STRING, discrim.getJavaType());
StringLeafEntity leaf = new StringLeafEntity();
StringRootEntity root = new StringRootEntity();
em.getTransaction().begin();
em.persist(leaf);
em.persist(root);
em.getTransaction().commit();
em.refresh(leaf);
em.refresh(root);
em.clear();
StringLeafEntity leaf2 = em.find(StringLeafEntity.class, leaf.getId());
StringRootEntity root2 = em.find(StringRootEntity.class, root.getId());
assertNotNull(leaf2);
assertNotNull(root2);
em.close();
}
public void testExistsQuery() {
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
StringRootEntity e = new StringRootEntity();
e.setName("foo");
em.persist(e);
e = new StringRootEntity();
e.setName("foo");
em.persist(e);
e = new StringRootEntity();
e.setName("bar");
em.persist(e);
em.getTransaction().commit();
em.close();
em = emf.createEntityManager();
Query q = em.createQuery("select o from StringAbstractEntity o " +
"where exists (select o2 from StringLeafEntity o2)");
List<StringAbstractEntity> list = q.getResultList();
assertEquals(0, list.size());
for (StringAbstractEntity entity : list)
assertTrue(entity instanceof StringLeafEntity);
em.close();
}
}