This commit is contained in:
Dhawal Kapil 2018-08-29 10:13:39 +05:30
commit 317ba772a9
24 changed files with 1126 additions and 124 deletions

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@ -2,7 +2,7 @@
The "REST with Spring" Classes
==============================
After 5 months of work, here's the Master Class of REST With Spring: <br/>
Here's the Master Class of REST With Spring (price changes permanently next Friday): <br/>
**[>> THE REST WITH SPRING MASTER CLASS](http://www.baeldung.com/rest-with-spring-course?utm_source=github&utm_medium=social&utm_content=tutorials&utm_campaign=rws#master-class)**
And here's the Master Class of Learn Spring Security: <br/>

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@ -1,4 +1,4 @@
package benchmarking;
package com.baeldung.streamordering;
import org.junit.Test;
import org.openjdk.jmh.annotations.*;
@ -15,7 +15,7 @@ import java.util.concurrent.TimeUnit;
import java.util.stream.IntStream;
public class TestBenchmark
public class BenchmarkUnitTest
{
@Test
@ -94,4 +94,4 @@ public class TestBenchmark
for (int i = 0; i < 1000; i++)
bh.consume (list.get (i));
}
}
}

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@ -1,3 +1,5 @@
package com.baeldung.streamordering;
import org.junit.Before;
import org.junit.Test;
@ -10,10 +12,9 @@ import java.util.stream.IntStream;
import static org.junit.Assert.assertEquals;
public class StreamsOrderingUnitTest {
public class StreamsOrderingTest {
Logger logger = Logger.getLogger( StreamsOrderingTest.class.getName());
Logger logger = Logger.getLogger( StreamsOrderingUnitTest.class.getName());
@Before
public void setUp() throws Exception {

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@ -1,10 +1,12 @@
package org.baeldung.java.io;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.SequenceInputStream;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
@ -74,6 +76,28 @@ public class JavaXToInputStreamUnitTest {
IOUtils.closeQuietly(targetStream);
}
@Test
public final void givenUsingPlainJava_whenConvertingFileToDataInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/test/resources/sample.txt");
final InputStream targetStream = new DataInputStream(new FileInputStream(initialFile));
IOUtils.closeQuietly(targetStream);
}
@Test
public final void givenUsingPlainJava_whenConvertingFileToSequenceInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/test/resources/sample.txt");
final File anotherFile = new File("src/test/resources/anothersample.txt");
final InputStream targetStream = new FileInputStream(initialFile);
final InputStream anotherTargetStream = new FileInputStream(anotherFile);
InputStream sequenceTargetStream = new SequenceInputStream(targetStream, anotherTargetStream);
IOUtils.closeQuietly(targetStream);
IOUtils.closeQuietly(anotherTargetStream);
IOUtils.closeQuietly(sequenceTargetStream);
}
@Test
public final void givenUsingGuava_whenConvertingFileToInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/test/resources/sample.txt");

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@ -0,0 +1 @@
...Continues

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@ -13,21 +13,31 @@ public class PersonRepositoryUnitTest {
PersonRepository personRepository = new PersonRepository();
@Test
public void whenIdIsNull_thenExceptionIsThrown() throws Exception {
assertThrows(Exception.class,
public void whenIdIsNull_thenExceptionIsThrown() {
assertThrows(IllegalArgumentException.class,
() ->
Optional
.ofNullable(personRepository.findNameById(null))
.orElseThrow(Exception::new));
.orElseThrow(IllegalArgumentException::new));
}
@Test
public void whenIdIsNonNull_thenNoExceptionIsThrown() throws Exception {
public void whenIdIsNonNull_thenNoExceptionIsThrown() {
assertAll(
() ->
Optional
.ofNullable(personRepository.findNameById("id"))
.orElseThrow(Exception::new));
.orElseThrow(RuntimeException::new));
}
@Test
public void whenIdNonNull_thenReturnsNameUpperCase() {
String name = Optional
.ofNullable(personRepository.findNameById("id"))
.map(String::toUpperCase)
.orElseThrow(RuntimeException::new);
assertEquals("NAME", name);
}
@Test

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@ -1,85 +1,105 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-kotlin</artifactId>
<packaging>jar</packaging>
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-kotlin</artifactId>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-kotlin</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../parent-kotlin</relativePath>
</parent>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-kotlin</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../parent-kotlin</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-api</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-subject-extension</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-junit-platform-engine</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>khttp</groupId>
<artifactId>khttp</artifactId>
<version>${khttp.version}</version>
</dependency>
<dependency>
<groupId>com.nhaarman</groupId>
<artifactId>mockito-kotlin</artifactId>
<version>${mockito-kotlin.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.github.salomonbrys.kodein</groupId>
<artifactId>kodein</artifactId>
<version>${kodein.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.beust</groupId>
<artifactId>klaxon</artifactId>
<version>${klaxon.version}</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>exposed</id>
<name>exposed</name>
<url>https://dl.bintray.com/kotlin/exposed</url>
</repository>
</repositories>
<properties>
<mockito-kotlin.version>1.5.0</mockito-kotlin.version>
<kodein.version>4.1.0</kodein.version>
<klaxon.version>3.0.4</klaxon.version>
<khttp.version>0.1.0</khttp.version>
<commons-math3.version>3.6.1</commons-math3.version>
<junit.platform.version>1.1.1</junit.platform.version>
<junit.vintage.version>5.2.0</junit.vintage.version>
<assertj.version>3.10.0</assertj.version>
</properties>
<dependencies>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-api</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-subject-extension</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.spek</groupId>
<artifactId>spek-junit-platform-engine</artifactId>
<version>1.1.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>khttp</groupId>
<artifactId>khttp</artifactId>
<version>${khttp.version}</version>
</dependency>
<dependency>
<groupId>com.nhaarman</groupId>
<artifactId>mockito-kotlin</artifactId>
<version>${mockito-kotlin.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.github.salomonbrys.kodein</groupId>
<artifactId>kodein</artifactId>
<version>${kodein.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.beust</groupId>
<artifactId>klaxon</artifactId>
<version>${klaxon.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed</artifactId>
<version>${exposed.version}</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2database.version}</version>
</dependency>
</dependencies>
<properties>
<mockito-kotlin.version>1.5.0</mockito-kotlin.version>
<kodein.version>4.1.0</kodein.version>
<klaxon.version>3.0.4</klaxon.version>
<khttp.version>0.1.0</khttp.version>
<commons-math3.version>3.6.1</commons-math3.version>
<junit.platform.version>1.1.1</junit.platform.version>
<junit.vintage.version>5.2.0</junit.vintage.version>
<assertj.version>3.10.0</assertj.version>
<h2database.version>1.4.197</h2database.version>
<exposed.version>0.10.4</exposed.version>
</properties>
</project>

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@ -0,0 +1,333 @@
package com.baeldung.kotlin.exposed
import org.jetbrains.exposed.dao.*
import org.jetbrains.exposed.sql.*
import org.jetbrains.exposed.sql.transactions.TransactionManager
import org.jetbrains.exposed.sql.transactions.transaction
import org.junit.Test
import java.sql.DriverManager
import kotlin.test.*
class ExposedTest {
@Test
fun whenH2Database_thenConnectionSuccessful() {
val database = Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
transaction {
assertEquals(1.4.toBigDecimal(), database.version)
assertEquals("h2", database.vendor)
}
}
@Test
fun whenH2DatabaseWithCredentials_thenConnectionSuccessful() {
Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver", user = "myself", password = "secret")
}
@Test
fun whenH2DatabaseWithManualConnection_thenConnectionSuccessful() {
var connected = false
Database.connect({ connected = true; DriverManager.getConnection("jdbc:h2:mem:test;MODE=MySQL") })
assertEquals(false, connected)
transaction {
addLogger(StdOutSqlLogger)
assertEquals(false, connected)
SchemaUtils.create(Cities)
assertEquals(true, connected)
}
}
@Test
fun whenManualCommit_thenOk() {
Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
transaction {
assertTrue(this is Transaction)
commit()
commit()
commit()
}
}
@Test
fun whenInsert_thenGeneratedKeys() {
Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
transaction {
SchemaUtils.create(StarWarsFilms)
val id = StarWarsFilms.insertAndGetId {
it[name] = "The Last Jedi"
it[sequelId] = 8
it[director] = "Rian Johnson"
}
assertEquals(1, id.value)
val insert = StarWarsFilms.insert {
it[name] = "The Force Awakens"
it[sequelId] = 7
it[director] = "J.J. Abrams"
}
assertEquals(2, insert[StarWarsFilms.id]?.value)
val selectAll = StarWarsFilms.selectAll()
selectAll.forEach {
assertTrue { it[StarWarsFilms.sequelId] >= 7 }
}
StarWarsFilms.slice(StarWarsFilms.name, StarWarsFilms.director).selectAll()
.forEach {
assertTrue { it[StarWarsFilms.name].startsWith("The") }
}
val select = StarWarsFilms.select { (StarWarsFilms.director like "J.J.%") and (StarWarsFilms.sequelId eq 7) }
assertEquals(1, select.count())
StarWarsFilms.update ({ StarWarsFilms.sequelId eq 8 }) {
it[name] = "Episode VIII The Last Jedi"
with(SqlExpressionBuilder) {
it.update(StarWarsFilms.sequelId, StarWarsFilms.sequelId + 1)
}
}
}
}
@Test
fun whenForeignKey_thenAutoJoin() {
Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
transaction {
addLogger(StdOutSqlLogger)
SchemaUtils.create(StarWarsFilms, Players)
StarWarsFilms.insert {
it[name] = "The Last Jedi"
it[sequelId] = 8
it[director] = "Rian Johnson"
}
StarWarsFilms.insert {
it[name] = "The Force Awakens"
it[sequelId] = 7
it[director] = "J.J. Abrams"
}
Players.insert {
it[name] = "Mark Hamill"
it[sequelId] = 7
}
Players.insert {
it[name] = "Mark Hamill"
it[sequelId] = 8
}
val simpleInnerJoin = (StarWarsFilms innerJoin Players).selectAll()
assertEquals(2, simpleInnerJoin.count())
simpleInnerJoin.forEach {
assertNotNull(it[StarWarsFilms.name])
assertEquals(it[StarWarsFilms.sequelId], it[Players.sequelId])
assertEquals("Mark Hamill", it[Players.name])
}
val innerJoinWithCondition = (StarWarsFilms innerJoin Players)
.select { StarWarsFilms.sequelId eq Players.sequelId }
assertEquals(2, innerJoinWithCondition.count())
innerJoinWithCondition.forEach {
assertNotNull(it[StarWarsFilms.name])
assertEquals(it[StarWarsFilms.sequelId], it[Players.sequelId])
assertEquals("Mark Hamill", it[Players.name])
}
val complexInnerJoin = Join(StarWarsFilms, Players, joinType = JoinType.INNER, onColumn = StarWarsFilms.sequelId, otherColumn = Players.sequelId, additionalConstraint = {
StarWarsFilms.sequelId eq 8
}).selectAll()
assertEquals(1, complexInnerJoin.count())
complexInnerJoin.forEach {
assertNotNull(it[StarWarsFilms.name])
assertEquals(it[StarWarsFilms.sequelId], it[Players.sequelId])
assertEquals("Mark Hamill", it[Players.name])
}
}
}
@Test
fun whenJoinWithAlias_thenFun() {
Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
transaction {
addLogger(StdOutSqlLogger)
SchemaUtils.create(StarWarsFilms, Players)
StarWarsFilms.insert {
it[name] = "The Last Jedi"
it[sequelId] = 8
it[director] = "Rian Johnson"
}
StarWarsFilms.insert {
it[name] = "The Force Awakens"
it[sequelId] = 7
it[director] = "J.J. Abrams"
}
val sequel = StarWarsFilms.alias("sequel")
Join(StarWarsFilms, sequel,
additionalConstraint = { sequel[StarWarsFilms.sequelId] eq StarWarsFilms.sequelId + 1 })
.selectAll().forEach {
assertEquals(it[sequel[StarWarsFilms.sequelId]], it[StarWarsFilms.sequelId] + 1)
}
}
}
@Test
fun whenEntity_thenDAO() {
val database = Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
val connection = database.connector.invoke() //Keep a connection open so the DB is not destroyed after the first transaction
val inserted = transaction {
addLogger(StdOutSqlLogger)
SchemaUtils.create(StarWarsFilms, Players)
val theLastJedi = StarWarsFilm.new {
name = "The Last Jedi"
sequelId = 8
director = "Rian Johnson"
}
assertFalse(TransactionManager.current().entityCache.inserts.isEmpty())
assertEquals(1, theLastJedi.id.value) //Reading this causes a flush
assertTrue(TransactionManager.current().entityCache.inserts.isEmpty())
theLastJedi
}
transaction {
val theLastJedi = StarWarsFilm.findById(1)
assertNotNull(theLastJedi)
assertEquals(inserted.id, theLastJedi?.id)
}
connection.close()
}
@Test
fun whenManyToOne_thenNavigation() {
val database = Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
val connection = database.connector.invoke()
transaction {
addLogger(StdOutSqlLogger)
SchemaUtils.create(StarWarsFilms, Players, Users, UserRatings)
val theLastJedi = StarWarsFilm.new {
name = "The Last Jedi"
sequelId = 8
director = "Rian Johnson"
}
val someUser = User.new {
name = "Some User"
}
val rating = UserRating.new {
value = 9
user = someUser
film = theLastJedi
}
assertEquals(theLastJedi, rating.film)
assertEquals(someUser, rating.user)
assertEquals(rating, theLastJedi.ratings.first())
}
transaction {
val theLastJedi = StarWarsFilm.find { StarWarsFilms.sequelId eq 8 }.first()
val ratings = UserRating.find { UserRatings.film eq theLastJedi.id }
assertEquals(1, ratings.count())
val rating = ratings.first()
assertEquals("Some User", rating.user.name)
assertEquals(rating, theLastJedi.ratings.first())
UserRating.new {
value = 8
user = rating.user
film = theLastJedi
}
assertEquals(2, theLastJedi.ratings.count())
}
connection.close()
}
@Test
fun whenManyToMany_thenAssociation() {
val database = Database.connect("jdbc:h2:mem:test", driver = "org.h2.Driver")
val connection = database.connector.invoke()
val film = transaction {
SchemaUtils.create(StarWarsFilms)
StarWarsFilm.new {
name = "The Last Jedi"
sequelId = 8
director = "Rian Johnson"
}
}
val actor = transaction {
SchemaUtils.create(Actors)
Actor.new {
firstname = "Daisy"
lastname = "Ridley"
}
}
transaction {
SchemaUtils.create(StarWarsFilmActors)
film.actors = SizedCollection(listOf(actor))
}
connection.close()
}
}
object Cities: IntIdTable() {
val name = varchar("name", 50)
}
object StarWarsFilms_Simple : Table() {
val id = integer("id").autoIncrement().primaryKey()
val sequelId = integer("sequel_id").uniqueIndex()
val name = varchar("name", 50)
val director = varchar("director", 50)
}
object StarWarsFilms : IntIdTable() {
val sequelId = integer("sequel_id").uniqueIndex()
val name = varchar("name", 50)
val director = varchar("director", 50)
}
object Players : Table() {
//val sequelId = integer("sequel_id").uniqueIndex().references(StarWarsFilms.sequelId)
val sequelId = reference("sequel_id", StarWarsFilms.sequelId).uniqueIndex()
//val filmId = reference("film_id", StarWarsFilms).nullable()
val name = varchar("name", 50)
}
class StarWarsFilm(id: EntityID<Int>) : Entity<Int>(id) {
companion object : EntityClass<Int, StarWarsFilm>(StarWarsFilms)
var sequelId by StarWarsFilms.sequelId
var name by StarWarsFilms.name
var director by StarWarsFilms.director
var actors by Actor via StarWarsFilmActors
val ratings by UserRating referrersOn UserRatings.film
}
object Users: IntIdTable() {
val name = varchar("name", 50)
}
object UserRatings: IntIdTable() {
val value = long("value")
val film = reference("film", StarWarsFilms)
val user = reference("user", Users)
}
class User(id: EntityID<Int>): IntEntity(id) {
companion object : IntEntityClass<User>(Users)
var name by Users.name
}
class UserRating(id: EntityID<Int>): IntEntity(id) {
companion object : IntEntityClass<UserRating>(UserRatings)
var value by UserRatings.value
var film by StarWarsFilm referencedOn UserRatings.film
var user by User referencedOn UserRatings.user
}
object Actors: IntIdTable() {
val firstname = varchar("firstname", 50)
val lastname = varchar("lastname", 50)
}
class Actor(id: EntityID<Int>): IntEntity(id) {
companion object : IntEntityClass<Actor>(Actors)
var firstname by Actors.firstname
var lastname by Actors.lastname
}
object StarWarsFilmActors : Table() {
val starWarsFilm = reference("starWarsFilm", StarWarsFilms).primaryKey(0)
val actor = reference("actor", Actors).primaryKey(1)
}

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@ -0,0 +1,34 @@
package com.baeldung.hibernate.joincolumn;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Address {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Column(name = "ZIP")
private String zipCode;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getZipCode() {
return zipCode;
}
public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}
}

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@ -0,0 +1,47 @@
package com.baeldung.hibernate.joincolumn;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
@Entity
public class Email {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String address;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "employee_id")
private Employee employee;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Employee getEmployee() {
return employee;
}
public void setEmployee(Employee employee) {
this.employee = employee;
}
}

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@ -0,0 +1,36 @@
package com.baeldung.hibernate.joincolumn;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
@Entity
public class Employee {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@OneToMany(fetch = FetchType.LAZY, mappedBy = "employee")
private List<Email> emails;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public List<Email> getEmails() {
return emails;
}
public void setEmails(List<Email> emails) {
this.emails = emails;
}
}

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@ -0,0 +1,41 @@
package com.baeldung.hibernate.joincolumn;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.ManyToOne;
@Entity
public class Office {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumns({
@JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
@JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
})
private Address address;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}

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@ -0,0 +1,57 @@
package com.baeldung.hibernate.joincolumn;
import com.baeldung.hibernate.HibernateUtil;
import java.io.IOException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class JoinColumnIntegrationTest {
private Session session;
private Transaction transaction;
@Before
public void setUp() throws IOException {
session = HibernateUtil.getSessionFactory("hibernate-spatial.properties")
.openSession();
transaction = session.beginTransaction();
}
@After
public void tearDown() {
transaction.rollback();
session.close();
}
@Test
public void givenOfficeEntity_setAddress_shouldPersist() {
Office office = new Office();
Address address = new Address();
address.setZipCode("11-111");
office.setAddress(address);
session.save(office);
session.flush();
session.clear();
}
@Test
public void givenEmployeeEntity_setEmails_shouldPersist() {
Employee employee = new Employee();
Email email = new Email();
email.setAddress("example@email.com");
email.setEmployee(employee);
session.save(employee);
session.flush();
session.clear();
}
}

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@ -15,6 +15,18 @@
</parent>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.openjdk.jmh/jmh-core -->
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
@ -107,6 +119,7 @@
<properties>
<!-- util -->
<jmh.version>1.21</jmh.version>
<commons-lang3.version>3.5</commons-lang3.version>
<lombok.version>1.16.12</lombok.version>
<vavr.version>0.9.0</vavr.version>

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@ -0,0 +1,97 @@
package com.baeldung.streamordering;
import org.junit.Test;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.TimeValue;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import java.util.stream.IntStream;
public class BenchmarkUnitTest
{
@Test
public void
launchBenchmark() throws Exception {
Options opt = new OptionsBuilder()
// Specify which benchmarks to run.
// You can be more specific if you'd like to run only one benchmark per test.
.include(this.getClass().getName() + ".*")
// Set the following options as needed
.mode (Mode.AverageTime)
.timeUnit(TimeUnit.MICROSECONDS)
.warmupTime(TimeValue.seconds(1))
.warmupIterations(2)
.measurementTime(TimeValue.seconds(1))
.measurementIterations(2)
.threads(2)
.forks(1)
.shouldFailOnError(true)
.shouldDoGC(true)
//.jvmArgs("-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining")
//.addProfiler(WinPerfAsmProfiler.class)
.build();
new Runner(opt).run();
}
@Benchmark
public void givenOrderedStreamInput_whenStreamFiltered_showOpsPerMS(){
IntStream.range(1, 100_000_000).parallel().filter(i -> i % 10 == 0).toArray();
}
@Benchmark
public void givenUnorderedStreamInput_whenStreamFiltered_showOpsPerMS(){
IntStream.range(1,100_000_000).unordered().parallel().filter(i -> i % 10 == 0).toArray();
}
@Benchmark
public void givenUnorderedStreamInput_whenStreamDistinct_showOpsPerMS(){
IntStream.range(1, 1_000_000).unordered().parallel().distinct().toArray();
}
@Benchmark
public void givenOrderedStreamInput_whenStreamDistinct_showOpsPerMS() {
//section 5.1.
IntStream.range(1, 1_000_000).parallel().distinct().toArray();
}
// The JMH samples are the best documentation for how to use it
// http://hg.openjdk.java.net/code-tools/jmh/file/tip/jmh-samples/src/main/java/org/openjdk/jmh/samples/
@State(Scope.Thread)
public static class BenchmarkState
{
List<Integer> list;
@Setup(Level.Trial) public void
initialize() {
Random rand = new Random();
list = new ArrayList<>();
for (int i = 0; i < 1000; i++)
list.add (rand.nextInt());
}
}
@Benchmark public void
benchmark1 (BenchmarkState state, Blackhole bh) {
List<Integer> list = state.list;
for (int i = 0; i < 1000; i++)
bh.consume (list.get (i));
}
}

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@ -0,0 +1,149 @@
package com.baeldung.streamordering;
import org.junit.Before;
import org.junit.Test;
import java.util.*;
import java.util.function.Function;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import static org.junit.Assert.assertEquals;
public class StreamsOrderingUnitTest {
Logger logger = Logger.getLogger( StreamsOrderingUnitTest.class.getName());
@Before
public void setUp() throws Exception {
logger.setLevel(Level.ALL);
}
@Test
public void givenTwoCollections_whenStreamed_thenCheckOutputDifferent(){
List<String> list = Arrays.asList("B", "A", "C", "D", "F");
Set<String> set = new TreeSet<>(Arrays.asList("B", "A", "C", "D", "F"));
Object[] listOutput = list.stream().toArray();
Object[] setOutput = set.stream().toArray();
assertEquals("[B, A, C, D, F]", Arrays.toString(listOutput));
assertEquals("[A, B, C, D, F]", Arrays.toString(setOutput));
}
@Test
public void givenTwoCollections_whenStreamedInParallel_thenCheckOutputDifferent(){
List<String> list = Arrays.asList("B", "A", "C", "D", "F");
Set<String> set = new TreeSet<>(Arrays.asList("B", "A", "C", "D", "F"));
Object[] listOutput = list.stream().parallel().toArray();
Object[] setOutput = set.stream().parallel().toArray();
assertEquals("[B, A, C, D, F]", Arrays.toString(listOutput));
assertEquals("[A, B, C, D, F]", Arrays.toString(setOutput));
}
@Test
public void givenOrderedInput_whenUnorderedAndOrderedCompared_thenCheckUnorderedOutputChanges(){
Set<Integer> set = new TreeSet<>(
Arrays.asList(-9, -5, -4, -2, 1, 2, 4, 5, 7, 9, 12, 13, 16, 29, 23, 34, 57, 68, 90, 102, 230));
Object[] orderedArray = set.stream()
.parallel()
.limit(5)
.toArray();
Object[] unorderedArray = set.stream()
.unordered()
.parallel()
.limit(5)
.toArray();
logger.info(Arrays.toString(orderedArray));
logger.info(Arrays.toString(unorderedArray));
}
@Test
public void givenUnsortedStreamInput_whenStreamSorted_thenCheckOrderChanged(){
List<Integer> list = Arrays.asList(-3,10,-4,1,3);
Object[] listOutput = list.stream().toArray();
Object[] listOutputSorted = list.stream().sorted().toArray();
assertEquals("[-3, 10, -4, 1, 3]", Arrays.toString(listOutput));
assertEquals("[-4, -3, 1, 3, 10]", Arrays.toString(listOutputSorted));
}
@Test
public void givenUnsortedStreamInput_whenStreamDistinct_thenShowTimeTaken(){
long start, end;
start = System.currentTimeMillis();
IntStream.range(1,1_000_000).unordered().parallel().distinct().toArray();
end = System.currentTimeMillis();
System.out.println(String.format("Time taken when unordered: %d ms", (end - start)));
}
@Test
public void givenSameCollection_whenStreamTerminated_thenCheckEachVsEachOrdered(){
List<String> list = Arrays.asList("B", "A", "C", "D", "F");
list.stream().parallel().forEach(e -> logger.log(Level.INFO, e));
list.stream().parallel().forEachOrdered(e -> logger.log(Level.INFO, e));
}
@Test
public void givenSameCollection_whenStreamCollected_thenCheckOutput(){
List<String> list = Arrays.asList("B", "A", "C", "D", "F");
List<String> collectionList = list.stream().parallel().collect(Collectors.toList());
Set<String> collectionSet = list.stream().parallel().collect(Collectors.toCollection(TreeSet::new));
assertEquals("[B, A, C, D, F]", collectionList.toString());
assertEquals("[A, B, C, D, F]", collectionSet.toString());
}
@Test
public void givenListIterationOrder_whenStreamCollectedToMap_thenCeckOrderChanged() {
List<String> list = Arrays.asList("A", "BB", "CCC");
Map<String, Integer> hashMap = list.stream().collect(Collectors.toMap(Function.identity(), String::length));
Object[] keySet = hashMap.keySet().toArray();
assertEquals("[BB, A, CCC]", Arrays.toString(keySet));
}
@Test
public void givenListIteration_whenStreamCollectedtoHashMap_thenCheckOrderMaintained() {
List<String> list = Arrays.asList("A", "BB", "CCC", "CCC");
Map<String, Integer> linkedHashMap = list.stream().collect(Collectors.toMap(
Function.identity(),
String::length,
(u, v) -> u,
LinkedHashMap::new
));
Object[] keySet = linkedHashMap.keySet().toArray();
assertEquals("[A, BB, CCC]", Arrays.toString(keySet));
}
}

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@ -0,0 +1,24 @@
package com.baeldung.event.listener;
import org.springframework.context.event.ContextStartedEvent;
import org.springframework.context.event.ContextStoppedEvent;
import org.springframework.context.event.EventListener;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
@Component
public class ContextEventListener {
@Order(2)
@EventListener
public void handleContextRefreshEvent(ContextStartedEvent ctxStartEvt) {
System.out.println("Context Start Event received.");
}
@Order(1)
@EventListener(classes = { ContextStartedEvent.class, ContextStoppedEvent.class })
public void handleMultipleEvents() {
System.out.println("Multi-event listener invoked");
}
}

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@ -0,0 +1,10 @@
package com.baeldung.event.listener;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@ComponentScan(basePackages = "com.baeldung.event.listener")
public class EventConfig {
}

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@ -0,0 +1,12 @@
package com.baeldung.event.listener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class SpringRunner {
public static void main(String[] args) {
ConfigurableApplicationContext ctx = new AnnotationConfigApplicationContext(EventConfig.class);
ctx.start();
}
}

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@ -0,0 +1,30 @@
package com.baeldung.thymeleaf.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.baeldung.thymeleaf.model.Course;
/**
* Handles requests for the student model.
*
*/
@Controller
public class CourseRegistrationController {
@RequestMapping(value = "/registerCourse", method = RequestMethod.POST)
public String register(@ModelAttribute Course course, Model model) {
model.addAttribute("successMessage", "You have successfully registered for course: " + course.getName() + ".");
return "courseRegistration.html";
}
@RequestMapping(value = "/registerCourse", method = RequestMethod.GET)
public String register(Model model) {
model.addAttribute("course", new Course());
return "courseRegistration.html";
}
}

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@ -0,0 +1,52 @@
package com.baeldung.thymeleaf.model;
import java.util.Date;
public class Course {
private String name;
private String description;
private Date startDate;
private Date endDate;
private String teacher;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Date getStartDate() {
return startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
public Date getEndDate() {
return endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
public String getTeacher() {
return teacher;
}
public void setTeacher(String teacher) {
this.teacher = teacher;
}
}

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@ -0,0 +1,42 @@
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<title>Register for course</title>
<script>
function validateForm() {
var e = document.getElementById("course");
var value = e.options[e.selectedIndex].value;
if (value == '') {
var error = document.getElementById("errormesg");
error.textContent = e.getAttribute('data-validation-message');
return false;
}
return true;
}
</script>
</head>
<body>
<h3>Register Here</h3>
<form action="#" th:action="@{/registerCourse}" th:object="${course}"
method="post" onsubmit="return validateForm();">
<span id="errormesg" style="color: red"></span> <span
style="font-weight: bold" th:text="${successMessage}"></span>
<table>
<tr>
<td><label th:text="#{msg.courseName}+': '"></label></td>
<td><select id="course" th:field="*{name}"
th:data-validation-message="#{msg.courseName.mandatory}">
<option th:value="''" th:text="'Select'"></option>
<option th:value="'Mathematics'" th:text="'Mathematics'"></option>
<option th:value="'History'" th:text="'History'"></option>
</select></td>
</tr>
<tr>
<td><input type="submit" value="Submit" /></td>
</tr>
</table>
</form>
</body>
</html>

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@ -24,6 +24,9 @@
<tr>
<td><a th:href="@{/listBooks}" th:text="#{msg.ListBooks}" /></td>
</tr>
<tr>
<td><a th:href="@{/registerCourse}" th:text="#{msg.CourseRegistration}" /></td>
</tr>
</table>
</body>
</html>

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@ -1,34 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>StreamsOrdering</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjdk.jmh/jmh-core -->
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.21</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.21</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>