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QBETest.java
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QBETest.java
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package net.glxn.qbe;
import java.util.List;
import java.util.UUID;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import net.glxn.qbe.exception.*;
import net.glxn.qbe.model.*;
import net.glxn.qbe.types.*;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import net.glxn.qbe.model.PojoUser;
import junit.framework.Assert;
import static junit.framework.Assert.assertEquals;
import static net.glxn.qbe.model.Gender.FEMALE;
import static net.glxn.qbe.model.Gender.MALE;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext-query-test.xml")
@TransactionConfiguration(transactionManager = "txManager", defaultRollback = true)
@Transactional(propagation = Propagation.REQUIRES_NEW)
public class QBETest {
@PersistenceContext
protected EntityManager entityManager;
private final int NUMBER_OF_RANDOM_USERS = 10;
@Before
public void setUp() throws Exception {
createRandomUsers(NUMBER_OF_RANDOM_USERS);
}
@SuppressWarnings({"JpaQlInspection"})
@After
public void tearDown() throws Exception {
entityManager.createQuery("delete from User").executeUpdate();
}
@Test
public void shouldGetListByExample() throws Exception {
User user = new User("nick", "foo@bar.com", MALE);
entityManager.persist(user);
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(user.getNick()))
.list();
assertEquals(1, resultList.size());
assertEquals(user.getNick(), resultList.get(0).getNick());
}
@Test
public void shouldGetItemByExample() throws Exception {
User user = new User("nick", "foo@bar.com", MALE);
entityManager.persist(user);
User item =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(user.getNick()))
.item();
assertEquals(user.getNick(), item.getNick());
}
@Test
public void shouldGetQueryByExample() throws Exception {
User user = new User("nick", "foo@bar.com", MALE);
entityManager.persist(user);
TypedQuery<User> query =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(user.getNick()))
.getQuery();
List<User> resultList = query.setFirstResult(0).setMaxResults(10).getResultList();
assertEquals(1, resultList.size());
assertEquals(user.getNick(), resultList.get(0).getNick());
}
@Test
public void shouldMatchAllForEmptyExample() throws Exception {
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser())
.list();
assertEquals(NUMBER_OF_RANDOM_USERS, resultList.size());
}
@Test
public void shouldSupportPaging() throws Exception {
TypedQuery<User> query =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser())
.getQuery();
query.setFirstResult(5);
query.setMaxResults(2);
List<User> resultList = query.getResultList();
assertEquals(2, resultList.size());
}
@Test
public void shouldSupportExactMatching() throws Exception {
String nick = "nick";
String randomValue = randomValue();
entityManager.persist(new User(randomValue + nick, "foo@bar.com", MALE));
entityManager.persist(new User(nick, "foo@bar.com", MALE));
entityManager.persist(new User(nick + randomValue, "foo@bar.com", MALE));
entityManager.persist(new User(randomValue + nick + randomValue, "foo@bar.com", MALE));
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(nick))
.list();
assertEquals(1, resultList.size());
assertEquals(nick, resultList.get(0).getNick());
}
@Test
public void shouldSupportMatching() throws Exception {
String nick = "nick";
String randomValue = randomValue();
entityManager.persist(new User(randomValue + nick, "foo@bar.com", MALE));
entityManager.persist(new User(nick, "foo@bar.com", MALE));
entityManager.persist(new User(nick + randomValue, "foo@bar.com", MALE));
entityManager.persist(new User(randomValue + nick + randomValue, "foo@bar.com", MALE));
QBEExample<PojoUser, User> qbeExample = QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(nick));
List<User> resultList =
qbeExample.use(Matching.EXACT)
.list();
assertEquals(1, resultList.size());
assertEquals(nick, resultList.get(0).getNick());
resultList =
qbeExample.use(Matching.START)
.list();
assertEquals(2, resultList.size());
for (User user : resultList) {
Assert.assertTrue(user.getNick().startsWith(nick));
}
resultList =
qbeExample.use(Matching.END)
.list();
assertEquals(2, resultList.size());
for (User user : resultList) {
Assert.assertTrue(user.getNick().endsWith(nick));
}
resultList =
qbeExample.use(Matching.MIDDLE)
.list();
assertEquals(4, resultList.size());
for (User user : resultList) {
Assert.assertTrue(user.getNick().contains(nick));
}
}
@Test(expected = UnsupportedOperationException.class)
public void noneExactMatchingOnFieldWithNonStringTypeShouldThrowException() throws Exception {
PojoUser example = new PojoUser();
example.setGender(FEMALE);
QBE.using(entityManager)
.query(User.class)
.by(example)
.use(Matching.MIDDLE)
.getQuery();
}
@Test
public void shouldSupportMultipleFields() throws Exception {
User user = new User("nick", "email", FEMALE);
entityManager.persist(user);
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(user.getNick(), user.getEmail())).list();
assertEquals(1, resultList.size());
assertEquals(user.getNick(), resultList.get(0).getNick());
assertEquals(user.getEmail(), resultList.get(0).getEmail());
}
@Test
public void shouldSupportIntersection() throws Exception {
User user1 = new User(randomValue(), randomValue(), MALE);
User user2 = new User(randomValue(), randomValue(), MALE);
entityManager.persist(user1);
entityManager.persist(user2);
QBEExample<PojoUser, User> qbeExample = QBE.using(entityManager)
.query(User.class)
.by(new PojoUser(user1.getNick(), user2.getEmail()));
List<User> resultList = qbeExample.list();
assertEquals(0, resultList.size());
resultList =
qbeExample.use(Junction.INTERSECTION)
.list();
assertEquals(2, resultList.size());
for (User entity : resultList) {
Assert.assertTrue(user1.getNick().equals(entity.getNick()) | user2.getEmail().equals(entity.getEmail()));
}
}
@Test
public void shouldOrderUsingColumnName() throws Exception {
createDataForOrderedTests();
String fieldToOrderBy = User.NICK_COLUMN_NAME;
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy(fieldToOrderBy, Order.ASCENDING)
.list();
assertOrder(resultList, Order.ASCENDING);
resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy(fieldToOrderBy, Order.DESCENDING)
.list();
assertOrder(resultList, Order.DESCENDING);
}
@Test
public void shouldOrderUsingFieldName() throws Exception {
createDataForOrderedTests();
String fieldToOrderBy = "nick";
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy(fieldToOrderBy, Order.ASCENDING)
.list();
assertOrder(resultList, Order.ASCENDING);
resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy(fieldToOrderBy, Order.DESCENDING)
.list();
assertOrder(resultList, Order.DESCENDING);
}
@Test
public void shouldGiveOrderedResultSetForMultipleOrders() throws Exception {
entityManager.persist(new User("nick", "email1", MALE));
entityManager.persist(new User("nick", "email2", MALE));
entityManager.persist(new User("nick3", "email", MALE));
entityManager.persist(new User("nick4", "email", MALE));
entityManager.persist(new User("nick5", "email", MALE));
List<User> resultList =
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy("nick", Order.DESCENDING)
.orderBy("email", Order.ASCENDING)
.list();
assertEquals(5, resultList.size());
assertEquals("email", resultList.get(0).getEmail());
assertEquals("nick5", resultList.get(0).getNick());
assertEquals("email", resultList.get(1).getEmail());
assertEquals("nick4", resultList.get(1).getNick());
assertEquals("email", resultList.get(2).getEmail());
assertEquals("nick3", resultList.get(2).getNick());
assertEquals("email1", resultList.get(3).getEmail());
assertEquals("nick", resultList.get(3).getNick());
assertEquals("email2", resultList.get(4).getEmail());
assertEquals("nick", resultList.get(4).getNick());
}
@Test(expected = OrderCreationException.class)
public void shouldThrowExceptionForUnknownOrderByArgument() throws Exception {
QBE.using(entityManager)
.query(User.class)
.by(new PojoUser("nick"))
.use(Matching.START)
.orderBy("someBogusFieldName", Order.ASCENDING)
.list();
}
private void createDataForOrderedTests() {
entityManager.persist(new User("nick1", "email1", FEMALE));
entityManager.persist(new User("nick2", "email2", FEMALE));
entityManager.persist(new User("nick3", "email3", FEMALE));
}
private void assertOrder(List<User> resultList, Order order) {
assertEquals(3, resultList.size());
switch (order) {
case ASCENDING:
assertEquals("nick1", resultList.get(0).getNick());
assertEquals("nick2", resultList.get(1).getNick());
assertEquals("nick3", resultList.get(2).getNick());
break;
case DESCENDING:
assertEquals("nick3", resultList.get(0).getNick());
assertEquals("nick2", resultList.get(1).getNick());
assertEquals("nick1", resultList.get(2).getNick());
break;
default:
throw new IllegalArgumentException("MUST BE ASC OR DESC FOR ASSERT");
}
}
private void createRandomUsers(int numberOfUsers) {
for (int i = 0; i < numberOfUsers; i++) {
entityManager.persist(new User(randomValue(), randomValue(), i % 2 == 0 ? MALE : FEMALE));
}
}
private String randomValue() {
return UUID.randomUUID().toString();
}
}