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Java 11 migrate remaining q-r (#1121)

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* Moves queue-load-leveling to Java 11

* Moves reactor to Java 11

* Moves reader-writer-lock to Java 11

* Moves repository to Java 11

* Moves resource-acquisition-is-initialization to Java 11

* Moves retry to Java 11

* Moves role-object to Java 11
This commit is contained in:
Anurag Agarwal
2020-01-04 22:13:12 +05:30
committed by Ilkka Seppälä
parent cd2a2e7711
commit 20ea465b7f
52 changed files with 424 additions and 554 deletions
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31
repository/src/main/java/com/iluwatar/repository/App.java
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@ -24,7 +24,6 @@
package com.iluwatar.repository;
import java.util.List;
import java.util.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
@ -55,14 +54,13 @@ public class App {
*/
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext.xml");
PersonRepository repository = context.getBean(PersonRepository.class);
var context = new ClassPathXmlApplicationContext("applicationContext.xml");
var repository = context.getBean(PersonRepository.class);
Person peter = new Person("Peter", "Sagan", 17);
Person nasta = new Person("Nasta", "Kuzminova", 25);
Person john = new Person("John", "lawrence", 35);
Person terry = new Person("Terry", "Law", 36);
var peter = new Person("Peter", "Sagan", 17);
var nasta = new Person("Nasta", "Kuzminova", 25);
var john = new Person("John", "lawrence", 35);
var terry = new Person("Terry", "Law", 36);
// Add new Person records
repository.save(peter);
@ -74,17 +72,15 @@ public class App {
LOGGER.info("Count Person records: {}", repository.count());
// Print all records
List<Person> persons = (List<Person>) repository.findAll();
for (Person person : persons) {
LOGGER.info(person.toString());
}
var persons = (List<Person>) repository.findAll();
persons.stream().map(Person::toString).forEach(LOGGER::info);
// Update Person
nasta.setName("Barbora");
nasta.setSurname("Spotakova");
repository.save(nasta);
LOGGER.info("Find by id 2: {}", repository.findById(2L).get());
repository.findById(2L).ifPresent(p -> LOGGER.info("Find by id 2: {}", p));
// Remove record from Person
repository.deleteById(2L);
@ -93,16 +89,15 @@ public class App {
LOGGER.info("Count Person records: {}", repository.count());
// find by name
Optional<Person> p = repository.findOne(new PersonSpecifications.NameEqualSpec("John"));
LOGGER.info("Find by John is {}", p.get());
repository
.findOne(new PersonSpecifications.NameEqualSpec("John"))
.ifPresent(p -> LOGGER.info("Find by John is {}", p));
// find by age
persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
LOGGER.info("Find Person with age between 20,40: ");
for (Person person : persons) {
LOGGER.info(person.toString());
}
persons.stream().map(Person::toString).forEach(LOGGER::info);
repository.deleteAll();

42
repository/src/main/java/com/iluwatar/repository/AppConfig.java
View File

@ -25,7 +25,6 @@ package com.iluwatar.repository;
import java.sql.SQLException;
import java.util.List;
import java.util.Optional;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.commons.dbcp.BasicDataSource;
@ -55,7 +54,7 @@ public class AppConfig {
*/
@Bean(destroyMethod = "close")
public DataSource dataSource() {
BasicDataSource basicDataSource = new BasicDataSource();
var basicDataSource = new BasicDataSource();
basicDataSource.setDriverClassName("org.h2.Driver");
basicDataSource.setUrl("jdbc:h2:~/databases/person");
basicDataSource.setUsername("sa");
@ -68,13 +67,11 @@ public class AppConfig {
*/
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManager =
new LocalContainerEntityManagerFactoryBean();
var entityManager = new LocalContainerEntityManagerFactoryBean();
entityManager.setDataSource(dataSource());
entityManager.setPackagesToScan("com.iluwatar");
entityManager.setPersistenceProvider(new HibernatePersistenceProvider());
entityManager.setJpaProperties(jpaProperties());
return entityManager;
}
@ -82,7 +79,7 @@ public class AppConfig {
* Properties for Jpa.
*/
private static Properties jpaProperties() {
Properties properties = new Properties();
var properties = new Properties();
properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
return properties;
@ -93,7 +90,7 @@ public class AppConfig {
*/
@Bean
public JpaTransactionManager transactionManager() throws SQLException {
JpaTransactionManager transactionManager = new JpaTransactionManager();
var transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
return transactionManager;
}
@ -104,15 +101,13 @@ public class AppConfig {
* @param args command line args
*/
public static void main(String[] args) {
var context = new AnnotationConfigApplicationContext(AppConfig.class);
var repository = context.getBean(PersonRepository.class);
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
AppConfig.class);
PersonRepository repository = context.getBean(PersonRepository.class);
Person peter = new Person("Peter", "Sagan", 17);
Person nasta = new Person("Nasta", "Kuzminova", 25);
Person john = new Person("John", "lawrence", 35);
Person terry = new Person("Terry", "Law", 36);
var peter = new Person("Peter", "Sagan", 17);
var nasta = new Person("Nasta", "Kuzminova", 25);
var john = new Person("John", "lawrence", 35);
var terry = new Person("Terry", "Law", 36);
// Add new Person records
repository.save(peter);
@ -124,17 +119,15 @@ public class AppConfig {
LOGGER.info("Count Person records: {}", repository.count());
// Print all records
List<Person> persons = (List<Person>) repository.findAll();
for (Person person : persons) {
LOGGER.info(person.toString());
}
var persons = (List<Person>) repository.findAll();
persons.stream().map(Person::toString).forEach(LOGGER::info);
// Update Person
nasta.setName("Barbora");
nasta.setSurname("Spotakova");
repository.save(nasta);
LOGGER.info("Find by id 2: {}", repository.findById(2L).get());
repository.findById(2L).ifPresent(p -> LOGGER.info("Find by id 2: {}", p));
// Remove record from Person
repository.deleteById(2L);
@ -143,16 +136,15 @@ public class AppConfig {
LOGGER.info("Count Person records: {}", repository.count());
// find by name
Optional<Person> p = repository.findOne(new PersonSpecifications.NameEqualSpec("John"));
LOGGER.info("Find by John is {}", p.get());
repository
.findOne(new PersonSpecifications.NameEqualSpec("John"))
.ifPresent(p -> LOGGER.info("Find by John is {}", p));
// find by age
persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
LOGGER.info("Find Person with age between 20,40: ");
for (Person person : persons) {
LOGGER.info(person.toString());
}
persons.stream().map(Person::toString).forEach(LOGGER::info);
context.close();

15
repository/src/main/java/com/iluwatar/repository/Person.java
View File

@ -92,9 +92,8 @@ public class Person {
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
final var prime = 31;
var result = 1;
result = prime * result + age;
result = prime * result + (id == null ? 0 : id.hashCode());
result = prime * result + (name == null ? 0 : name.hashCode());
@ -113,7 +112,7 @@ public class Person {
if (getClass() != obj.getClass()) {
return false;
}
Person other = (Person) obj;
var other = (Person) obj;
if (age != other.age) {
return false;
}
@ -132,13 +131,9 @@ public class Person {
return false;
}
if (surname == null) {
if (other.surname != null) {
return false;
}
} else if (!surname.equals(other.surname)) {
return false;
return other.surname == null;
}
return true;
return surname.equals(other.surname);
}
}

4
repository/src/main/java/com/iluwatar/repository/PersonSpecifications.java
View File

@ -50,9 +50,7 @@ public class PersonSpecifications {
@Override
public Predicate toPredicate(Root<Person> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
return cb.between(root.get("age"), from, to);
}
}
@ -72,9 +70,7 @@ public class PersonSpecifications {
* Get predicate.
*/
public Predicate toPredicate(Root<Person> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
return cb.equal(root.get("name"), this.name);
}
}

48
repository/src/test/java/com/iluwatar/repository/AnnotationBasedRepositoryTest.java
View File

@ -23,7 +23,13 @@
package com.iluwatar.repository;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import com.google.common.collect.Lists;
import java.util.List;
import javax.annotation.Resource;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
@ -31,51 +37,41 @@ import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import javax.annotation.Resource;
import java.util.List;
import java.util.Optional;
import static org.junit.jupiter.api.Assertions.*;
/**
* Test case to test the functions of {@link PersonRepository}, beside the CRUD functions, the query
* by {@link org.springframework.data.jpa.domain.Specification} are also test.
*
*/
@ExtendWith(SpringExtension.class)
@SpringBootTest(classes = { AppConfig.class })
@SpringBootTest(classes = {AppConfig.class})
public class AnnotationBasedRepositoryTest {
@Resource
private PersonRepository repository;
Person peter = new Person("Peter", "Sagan", 17);
Person nasta = new Person("Nasta", "Kuzminova", 25);
Person john = new Person("John", "lawrence", 35);
Person terry = new Person("Terry", "Law", 36);
private Person peter = new Person("Peter", "Sagan", 17);
private Person nasta = new Person("Nasta", "Kuzminova", 25);
private Person john = new Person("John", "lawrence", 35);
private Person terry = new Person("Terry", "Law", 36);
List<Person> persons = List.of(peter, nasta, john, terry);
private List<Person> persons = List.of(peter, nasta, john, terry);
/**
* Prepare data for test
*/
@BeforeEach
public void setup() {
repository.saveAll(persons);
}
@Test
public void testFindAll() {
List<Person> actuals = Lists.newArrayList(repository.findAll());
var actuals = Lists.newArrayList(repository.findAll());
assertTrue(actuals.containsAll(persons) && persons.containsAll(actuals));
}
@Test
public void testSave() {
Person terry = repository.findByName("Terry");
var terry = repository.findByName("Terry");
terry.setSurname("Lee");
terry.setAge(47);
repository.save(terry);
@ -87,8 +83,7 @@ public class AnnotationBasedRepositoryTest {
@Test
public void testDelete() {
Person terry = repository.findByName("Terry");
var terry = repository.findByName("Terry");
repository.delete(terry);
assertEquals(3, repository.count());
@ -97,31 +92,26 @@ public class AnnotationBasedRepositoryTest {
@Test
public void testCount() {
assertEquals(4, repository.count());
}
@Test
public void testFindAllByAgeBetweenSpec() {
List<Person> persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
var persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
assertEquals(3, persons.size());
assertTrue(persons.stream().allMatch((item) -> {
return item.getAge() > 20 && item.getAge() < 40;
}));
assertTrue(persons.stream().allMatch((item) -> item.getAge() > 20 && item.getAge() < 40));
}
@Test
public void testFindOneByNameEqualSpec() {
Optional<Person> actual = repository.findOne(new PersonSpecifications.NameEqualSpec("Terry"));
var actual = repository.findOne(new PersonSpecifications.NameEqualSpec("Terry"));
assertTrue(actual.isPresent());
assertEquals(terry, actual.get());
}
@AfterEach
public void cleanup() {
repository.deleteAll();
}

21
repository/src/test/java/com/iluwatar/repository/AppConfigTest.java
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@ -23,6 +23,12 @@
package com.iluwatar.repository;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
@ -30,19 +36,11 @@ import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.transaction.annotation.Transactional;
import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
/**
* This case is Just for test the Annotation Based configuration
*
*/
@ExtendWith(SpringExtension.class)
@SpringBootTest(classes = { AppConfig.class })
@SpringBootTest(classes = {AppConfig.class})
public class AppConfigTest {
@Autowired
@ -62,12 +60,11 @@ public class AppConfigTest {
@Test
@Transactional
public void testQuery() throws SQLException {
ResultSet resultSet = dataSource.getConnection().createStatement().executeQuery("SELECT 1");
var resultSet = dataSource.getConnection().createStatement().executeQuery("SELECT 1");
var expected = "1";
String result = null;
String expected = "1";
while (resultSet.next()) {
result = resultSet.getString(1);
}
assertEquals(expected, result);
}

5
repository/src/test/java/com/iluwatar/repository/AppTest.java
View File

@ -25,15 +25,12 @@ package com.iluwatar.repository;
import org.junit.jupiter.api.Test;
import java.io.IOException;
/**
* Tests that Repository example runs without errors.
*/
public class AppTest {
@Test
public void test() {
String[] args = {};
App.main(args);
App.main(new String[]{});
}
}

43
repository/src/test/java/com/iluwatar/repository/RepositoryTest.java
View File

@ -23,7 +23,13 @@
package com.iluwatar.repository;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import com.google.common.collect.Lists;
import java.util.List;
import javax.annotation.Resource;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
@ -31,50 +37,41 @@ import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import javax.annotation.Resource;
import java.util.List;
import java.util.Optional;
import static org.junit.jupiter.api.Assertions.*;
/**
* Test case to test the functions of {@link PersonRepository}, beside the CRUD functions, the query
* by {@link org.springframework.data.jpa.domain.Specification} are also test.
*/
@ExtendWith(SpringExtension.class)
@SpringBootTest(properties = { "locations=classpath:applicationContext.xml" })
@SpringBootTest(properties = {"locations=classpath:applicationContext.xml"})
public class RepositoryTest {
@Resource
private PersonRepository repository;
Person peter = new Person("Peter", "Sagan", 17);
Person nasta = new Person("Nasta", "Kuzminova", 25);
Person john = new Person("John", "lawrence", 35);
Person terry = new Person("Terry", "Law", 36);
private Person peter = new Person("Peter", "Sagan", 17);
private Person nasta = new Person("Nasta", "Kuzminova", 25);
private Person john = new Person("John", "lawrence", 35);
private Person terry = new Person("Terry", "Law", 36);
List<Person> persons = List.of(peter, nasta, john, terry);
private List<Person> persons = List.of(peter, nasta, john, terry);
/**
* Prepare data for test
*/
@BeforeEach
public void setup() {
repository.saveAll(persons);
}
@Test
public void testFindAll() {
List<Person> actuals = Lists.newArrayList(repository.findAll());
var actuals = Lists.newArrayList(repository.findAll());
assertTrue(actuals.containsAll(persons) && persons.containsAll(actuals));
}
@Test
public void testSave() {
Person terry = repository.findByName("Terry");
var terry = repository.findByName("Terry");
terry.setSurname("Lee");
terry.setAge(47);
repository.save(terry);
@ -86,8 +83,7 @@ public class RepositoryTest {
@Test
public void testDelete() {
Person terry = repository.findByName("Terry");
var terry = repository.findByName("Terry");
repository.delete(terry);
assertEquals(3, repository.count());
@ -96,14 +92,12 @@ public class RepositoryTest {
@Test
public void testCount() {
assertEquals(4, repository.count());
}
@Test
public void testFindAllByAgeBetweenSpec() {
List<Person> persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
var persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
assertEquals(3, persons.size());
assertTrue(persons.stream().allMatch(item -> item.getAge() > 20 && item.getAge() < 40));
@ -111,14 +105,13 @@ public class RepositoryTest {
@Test
public void testFindOneByNameEqualSpec() {
Optional<Person> actual = repository.findOne(new PersonSpecifications.NameEqualSpec("Terry"));
var actual = repository.findOne(new PersonSpecifications.NameEqualSpec("Terry"));
assertTrue(actual.isPresent());
assertEquals(terry, actual.get());
}
@AfterEach
public void cleanup() {
repository.deleteAll();
}