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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
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* software distributed under the License is distributed on an
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package org.apache.openjpa.persistence.jdbc.maps.m2mmapex0;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.persistence.Query;
import junit.framework.Assert;
import org.apache.openjpa.kernel.QueryImpl;
import org.apache.openjpa.persistence.ArgumentException;
import org.apache.openjpa.persistence.test.AllowFailure;
import org.apache.openjpa.persistence.test.SQLListenerTestCase;
public class TestMany2ManyMap extends SQLListenerTestCase {
public int numEmployees = 2;
public int numPhoneNumbersPerEmployee = 2;
public Map<Integer, Employee> empMap = new HashMap<Integer, Employee>();
public Map<Integer, PhoneNumber> phoneMap =
new HashMap<Integer, PhoneNumber>();
public int empId = 1;
public int phoneId = 1;
public int divId = 1;
public List rsAllPhones = null;
public List rsAllEmps = null;
public void setUp() {
super.setUp(CLEAR_TABLES, Division.class,
Employee.class, PhoneNumber.class);
createObj();
rsAllPhones = getAll(PhoneNumber.class);
rsAllEmps = getAll(Employee.class);
}
@AllowFailure
public void testQueryInMemoryQualifiedId() throws Exception {
queryQualifiedId(true);
}
public void testQueryQualifiedId() throws Exception {
queryQualifiedId(false);
}
public void setCandidate(Query q, Class clz)
throws Exception {
org.apache.openjpa.persistence.QueryImpl q1 =
(org.apache.openjpa.persistence.QueryImpl) q;
org.apache.openjpa.kernel.Query q2 = q1.getDelegate();
org.apache.openjpa.kernel.QueryImpl qi = (QueryImpl) q2;
if (clz == PhoneNumber.class)
qi.setCandidateCollection(rsAllPhones);
else if (clz == Employee.class)
qi.setCandidateCollection(rsAllEmps);
}
public void queryQualifiedId(boolean inMemory) throws Exception {
EntityManager em = emf.createEntityManager();
// test navigation thru VALUE
String query = "select VALUE(e).empId from PhoneNumber p, " +
" in (p.emps) e order by e.empId";
Query q = em.createQuery(query);
if (inMemory)
setCandidate(q, PhoneNumber.class);
List rs = q.getResultList();
// test navigation thru KEY
query = "select KEY(e), KEY(e).name from PhoneNumber p, " +
" in (p.emps) e order by e.empId";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, PhoneNumber.class);
rs = q.getResultList();
Division d0 = (Division) ((Object[]) rs.get(0))[0];
String name = (String)((Object[]) rs.get(0))[1];
assertEquals(d0.getName(), name);
query = "select KEY(e) from PhoneNumber p, " +
" in (p.emps) e order by e.empId";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, PhoneNumber.class);
rs = q.getResultList();
Division d = (Division) rs.get(0);
query = "select KEY(p) from Employee e, " +
" in (e.phones) p";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, Employee.class);
rs = q.getResultList();
Division d2 = (Division) rs.get(0);
query = "select VALUE(e) from PhoneNumber p, " +
" in (p.emps) e";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, PhoneNumber.class);
rs = q.getResultList();
Employee e = (Employee) rs.get(0);
em.clear();
query = "select ENTRY(e) from PhoneNumber p, " +
" in (p.emps) e order by e.empId";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, PhoneNumber.class);
rs = q.getResultList();
Map.Entry me = (Map.Entry) rs.get(0);
assertTrue(d.equals(me.getKey()));
query = "select TYPE(KEY(p)) from Employee e, " +
" in (e.phones) p";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, Employee.class);
rs = q.getResultList();
assertEquals(Division.class, rs.get(0));
// expects parser error:
// JPA2 has no support for predicate comparison using
// Key(e) or Value(e)
query = "select KEY(p) from Employee e, " +
" in (e.phones) p where KEY(p) = ?1";
try {
q = em.createQuery(query).setParameter(1, d2);
if (inMemory)
setCandidate(q, Employee.class);
rs = q.getResultList();
} catch (Exception ex) {
assertException(ex, ArgumentException.class);
}
// test VALUE(e) IS NULL predicate
query = "select KEY(p) from Employee e, " +
" in (e.phones) p WHERE VALUE(p) IS NULL";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, Employee.class);
rs = q.getResultList();
assertEquals(0, rs.size());
// test qualified path in scalar functions
query = "select CONCAT(KEY(p).name, 'xyz') from Employee e, " +
" in (e.phones) p WHERE SUBSTRING(KEY(p).name, 1)" +
" like '%2'";
q = em.createQuery(query);
if (inMemory)
setCandidate(q, Employee.class);
rs = q.getResultList();
assertEquals(((String) rs.get(0)), "d2xyz");
em.close();
}
public void testQueryObject() throws Exception {
queryObj();
findObj();
}
public void createObj() {
EntityManager em = emf.createEntityManager();
EntityTransaction tran = em.getTransaction();
for (int i = 0; i < numEmployees; i++) {
Employee e = createEmployee(em, empId++);
empMap.put(e.getEmpId(), e);
}
tran.begin();
em.flush();
tran.commit();
em.close();
}
public Employee createEmployee(EntityManager em, int id) {
Employee e = new Employee();
e.setEmpId(id);
for (int i = 0; i < numPhoneNumbersPerEmployee; i++) {
PhoneNumber phoneNumber = new PhoneNumber();
phoneNumber.setNumber(phoneId++);
Division d1 = createDivision(em, divId++);
Division d2 = createDivision(em, divId++);
phoneNumber.addEmployees(d1, e);
e.addPhoneNumber(d2, phoneNumber);
em.persist(phoneNumber);
phoneMap.put(phoneNumber.getNumber(), phoneNumber);
em.persist(d1);
em.persist(d2);
}
em.persist(e);
return e;
}
public Division createDivision(EntityManager em, int id) {
Division d = new Division();
d.setId(id);
d.setName("d" + id);
return d;
}
public void findObj() throws Exception {
EntityManager em = emf.createEntityManager();
Employee e = em.find(Employee.class, 1);
assertEmployee(e);
PhoneNumber p = em.find(PhoneNumber.class, 1);
assertPhoneNumber(p);
em.close();
}
public void queryObj() throws Exception {
queryEmployee();
queryPhoneNumber();
}
public void queryPhoneNumber() throws Exception {
EntityManager em = emf.createEntityManager();
EntityTransaction tran = em.getTransaction();
tran.begin();
Query q = em.createQuery("select p from PhoneNumber p");
List<PhoneNumber> ps = q.getResultList();
for (PhoneNumber p : ps) {
assertPhoneNumber(p);
}
tran.commit();
em.close();
}
public void queryEmployee() throws Exception {
EntityManager em = emf.createEntityManager();
EntityTransaction tran = em.getTransaction();
tran.begin();
Query q = em.createQuery("select e from Employee e");
List<Employee> es = q.getResultList();
for (Employee e : es) {
assertEmployee(e);
}
tran.commit();
em.close();
}
public void assertEmployee(Employee e) throws Exception {
int id = e.getEmpId();
Employee e0 = empMap.get(id);
Map<Division, PhoneNumber> phones0 = e0.getPhoneNumbers();
Map<Division, PhoneNumber> phones = e.getPhoneNumbers();
Assert.assertEquals(phones0.size(), phones.size());
checkPhoneMap(phones0, phones);
}
public void assertPhoneNumber(PhoneNumber p) throws Exception {
int number = p.getNumber();
PhoneNumber p0 = phoneMap.get(number);
Map<Division, Employee> es0 = p0.getEmployees();
Map<Division, Employee> es = p.getEmployees();
Assert.assertEquals(es0.size(), es.size());
checkEmpMap(es0, es);
}
public void checkPhoneMap(Map<Division, PhoneNumber> es0,
Map<Division, PhoneNumber> es) throws Exception {
Collection<Map.Entry<Division, PhoneNumber>> entrySets0 =
es0.entrySet();
for (Map.Entry<Division, PhoneNumber> entry0 : entrySets0) {
Division d0 = entry0.getKey();
PhoneNumber p0 = entry0.getValue();
PhoneNumber p = es.get(d0);
if (!p0.equals(p))
throw new Exception("Assertion failure");
}
}
public void checkEmpMap(Map<Division, Employee> es0,
Map<Division, Employee> es) throws Exception {
Collection<Map.Entry<Division, Employee>> entrySets0 =
es0.entrySet();
for (Map.Entry<Division, Employee> entry0 : entrySets0) {
Division d0 = entry0.getKey();
Employee e0 = entry0.getValue();
Employee e = es.get(d0);
if (!e0.equals(e))
throw new Exception("Assertion failure");
}
}
}