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* 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
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*
* 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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package org.apache.openjpa.jdbc.kernel;
import java.util.Collection;
import java.util.Iterator;
import javax.persistence.EntityManager;
import org.apache.openjpa.persistence.test.SingleEMFTestCase;
public class TestM2MBiVersion extends SingleEMFTestCase {
public static String SALESID = "SALES";
public static String MARKETINGID = "MARKETING";
public static String EMPLOYEE1ID = "EMPLOYEE1";
public static String EMPLOYEE2ID = "EMPLOYEE2";
public static String EMPLOYEE3ID = "EMPLOYEE3";
public void setUp() {
setUp(
M2MBiDepartment.class,
M2MBiEmployee.class,
CLEAR_TABLES);
createEntities();
}
void createEntities() {
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
M2MBiDepartment sales = new M2MBiDepartment();
sales.setDeptid(SALESID);
sales.setName("SALES");
sales.setCostCode("1000");
M2MBiDepartment marketing = new M2MBiDepartment();
marketing.setDeptid(MARKETINGID);
marketing.setName("marketing");
marketing.setCostCode("3000");
M2MBiEmployee e1 = new M2MBiEmployee();
M2MBiEmployee e2 = new M2MBiEmployee();
e1.setEmpid(EMPLOYEE1ID);
e1.setName("Gilgamesh_1");
e2.setEmpid(EMPLOYEE2ID);
e2.setName("Enkidu_1");
e1.getDepartments().add(sales);
e2.getDepartments().add(sales);
sales.getEmployees().add(e1);
sales.getEmployees().add(e2);
em.persist(e1);
em.persist(e2);
em.persist(sales);
em.persist(marketing);
em.flush();
em.getTransaction().commit();
em.close();
}
public void testNonRelationalFieldInverseSideVersionUpdate() {
EntityManager em = emf.createEntityManager();
M2MBiDepartment sales = em.find(M2MBiDepartment.class, SALESID);
M2MBiEmployee e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
M2MBiEmployee e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPre = sales.getVersion();
int e1VersionPre = e1.getVersion();
int e2VersionPre = e2.getVersion();
em.getTransaction().begin();
sales.setCostCode("1001");
em.getTransaction().commit();
em.close();
em = emf.createEntityManager();
sales = em.find(M2MBiDepartment.class, SALESID);
e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPost = sales.getVersion();
int e1VersionPost = e1.getVersion();
int e2VersionPost = e2.getVersion();
em.close();
assertEquals(salesVersionPost, salesVersionPre + 1);
assertEquals(e1VersionPost, e1VersionPre);
assertEquals(e2VersionPost, e2VersionPre);
}
public void testNonRelationalFieldOwnerSideVersionUpdate() {
// Change only non-relation fields on Employee.
// Version number of Employee should be updated.
// Version number of Department should not change.
EntityManager em = emf.createEntityManager();
M2MBiDepartment sales = em.find(M2MBiDepartment.class, SALESID);
M2MBiEmployee e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
M2MBiEmployee e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPre = sales.getVersion();
int e1VersionPre = e1.getVersion();
int e2VersionPre = e2.getVersion();
em.getTransaction().begin();
e1.setName("Gilgamesh_2");
e2.setName("Enkidu_2");
em.getTransaction().commit();
em.close();
em = emf.createEntityManager();
sales = em.find(M2MBiDepartment.class, SALESID);
e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPost = sales.getVersion();
int e1VersionPost = e1.getVersion();
int e2VersionPost = e2.getVersion();
em.close();
assertEquals(salesVersionPost, salesVersionPre);
assertEquals(e1VersionPost, e1VersionPre + 1);
assertEquals(e2VersionPost, e2VersionPre + 1);
}
public void testRelationalFieldBothSidesVersionUpdate() {
// Move Employee from old Department to new Department.
// Update both sides of the relationship.
// Since there is a bidirectional ManyToMany relationship
// from Employee to Department, Employee version should
// be updated. Since neither the new nor the old Departments
// are owners of the reassigned Employee, the Department
// versions should remain the same.
EntityManager em = emf.createEntityManager();
M2MBiDepartment sales = em.find(M2MBiDepartment.class, SALESID);
M2MBiDepartment marketing = em.find(M2MBiDepartment.class, MARKETINGID);
M2MBiEmployee e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
M2MBiEmployee e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPre = sales.getVersion();
int marketingVersionPre = marketing.getVersion();
int e1VersionPre = e1.getVersion();
int e2VersionPre = e2.getVersion();
em.getTransaction().begin();
// Remove sales from e1
Collection<M2MBiDepartment> e1Departments = e1.getDepartments();
for (Iterator<M2MBiDepartment> dIterator = e1Departments.iterator();
dIterator.hasNext();) {
M2MBiDepartment d = dIterator.next();
if (SALESID.equals(d.getDeptid())) {
dIterator.remove();
break;
}
}
// remove e1 from sales
Collection<M2MBiEmployee> salesEmployees = sales.getEmployees();
for (Iterator<M2MBiEmployee> eIterator = salesEmployees.iterator();
eIterator.hasNext();) {
M2MBiEmployee e = eIterator.next();
if (EMPLOYEE1ID.equals(e.getEmpid())) {
eIterator.remove();
break;
}
}
// Add marketing to e1
e1.getDepartments().add(marketing);
// Add e1 to marketing
marketing.getEmployees().add(e1);
em.getTransaction().commit();
em.close();
em = emf.createEntityManager();
sales = em.find(M2MBiDepartment.class, SALESID);
marketing = em.find(M2MBiDepartment.class, MARKETINGID);
e1 = em.find(M2MBiEmployee.class, EMPLOYEE1ID);
e2 = em.find(M2MBiEmployee.class, EMPLOYEE2ID);
int salesVersionPost = sales.getVersion();
int marketingVersionPost = marketing.getVersion();
int e1VersionPost = e1.getVersion();
int e2VersionPost = e2.getVersion();
em.close();
// Since Department is inverse side, there should
// be no version update when its employees are moved.
assertEquals(salesVersionPost, salesVersionPre);
assertEquals(marketingVersionPost, marketingVersionPre);
// Employee e1 was moved to marketing.
assertEquals(e1VersionPost, e1VersionPre + 1);
// Employee e2 was unchanged.
assertEquals(e2VersionPost, e2VersionPre);
}
}