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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.openjpa.persistence.kernel;
import java.util.Collection;
import org.apache.openjpa.meta.FetchGroup;
import org.apache.openjpa.persistence.FetchPlan;
import org.apache.openjpa.persistence.OpenJPAEntityManager;
import org.apache.openjpa.persistence.kernel.common.apps.FetchA;
import org.apache.openjpa.persistence.kernel.common.apps.FetchB;
import org.apache.openjpa.persistence.kernel.common.apps.FetchBase;
import org.apache.openjpa.persistence.test.SingleEMFTestCase;
/**
* Tests behavior of FetchPlan constructed dynamically by adding fields.
*
* Originally reported by Michael Vorburger in
* <A HREF="http://n2.nabble.com/Fetch-Group-questions-tc534861.html">OpenJPA
* user group</A>
*
* @author Pinaki Poddar
*
*/
public class TestDynamicFetchPlan extends SingleEMFTestCase {
private static final String JPQL = "select a from FetchA a";
public void setUp() {
super.setUp(CLEAR_TABLES, FetchBase.class, FetchA.class, FetchB.class);
createData();
}
public void createData() {
OpenJPAEntityManager em = emf.createEntityManager();
em.getTransaction().begin();
FetchA a1 = new FetchA();
a1.setText("a1");
FetchB b1 = new FetchB();
b1.setText("b1");
a1.setB(b1);
em.persist(a1);
em.persist(b1);
em.getTransaction().commit();
}
public void testFetchBySubClassFieldB() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class, "b");
fp.addField(FetchB.class, "text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertNull(a.getText());
assertEquals("b1", b.getText());
}
public void testFetchBySubClassFieldA() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class, "b");
fp.addField(FetchA.class, "text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertEquals("a1", a.getText());
assertNull(b.getText());
}
public void testFetchBySuperClassField() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class, "b");
fp.addField(FetchBase.class, "text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertEquals("a1", a.getText());
assertEquals("b1", b.getText());
}
public void testFetchBySubClassFieldNameB() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class.getName() + ".b");
fp.addField(FetchB.class.getName() + ".text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertNull(a.getText());
assertEquals("b1", b.getText());
}
public void testFetchBySubClassFieldNameA() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class.getName() + ".b");
fp.addField(FetchA.class.getName() + ".text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertEquals("a1", a.getText());
assertNull(b.getText());
}
public void testFetchBySuperClassFieldName() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
fp.setExtendedPathLookup(true);
fp.clearFetchGroups().removeFetchGroup(FetchGroup.NAME_DEFAULT);
fp.clearFields();
fp.addField(FetchA.class.getName() + ".b");
fp.addField(FetchBase.class.getName() + ".text");
FetchA a = (FetchA) em.createQuery(JPQL).getSingleResult();
em.close();
FetchB b = a.getB();
assertNotNull(b);
assertEquals("a1", a.getText());
assertEquals("b1", b.getText());
}
// OPENJPA-2413: FetchPlan.clearFetchGroups() does not retain "default" in list of active Fetch Groups.
public void testClearFetchPlan() {
OpenJPAEntityManager em = emf.createEntityManager();
FetchPlan fp = em.getFetchPlan();
// Make sure "default" is present in the list of active FetchGroups
Collection<String> fetchGroups = fp.getFetchGroups();
assertNotNull(fetchGroups);
assertTrue(fetchGroups.contains(FetchGroup.NAME_DEFAULT));
// Clear all active FetchGroups, only "default" should remain.
fp.clearFetchGroups();
Collection<String> fetchGroupsAfterClear = fp.getFetchGroups();
assertNotNull(fetchGroupsAfterClear);
assertTrue(fetchGroupsAfterClear.contains(FetchGroup.NAME_DEFAULT));
// Should still be able to remove the "default" FetchGroup
fp.removeFetchGroup(FetchGroup.NAME_DEFAULT);
Collection<String> fetchGroupsAfterRemove = fp.getFetchGroups();
assertNotNull(fetchGroupsAfterClear);
assertTrue(fetchGroupsAfterClear.isEmpty());
}
}