Merge remote-tracking branch 'origin/BAEL-3985' into BAEL-3985

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/composite/BookApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.composite;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BookApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(BookApplication.class);
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/composite/entity/Book.java

@@ -0,0 +1,47 @@
+package com.baeldung.composite.entity;
+
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+
+@Entity
+public class Book {
+
+    @EmbeddedId
+    private BookId id;
+    private String genre;
+    private Integer price;
+
+    public Book() {
+    }
+
+    public Book(String author, String name, String genre, Integer price) {
+        BookId id = new BookId(author, name);
+        this.id = id;
+        this.genre = genre;
+        this.price = price;
+    }
+
+    public BookId getId() {
+        return id;
+    }
+
+    public void setId(BookId id) {
+        this.id = id;
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+
+    public void setGenre(String genre) {
+        this.genre = genre;
+    }
+
+    public Integer getPrice() {
+        return price;
+    }
+
+    public void setPrice(Integer price) {
+        this.price = price;
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/composite/entity/BookId.java

@@ -0,0 +1,51 @@
+package com.baeldung.composite.entity;
+
+import javax.persistence.Embeddable;
+import java.io.Serializable;
+import java.util.Objects;
+
+@Embeddable
+public class BookId implements Serializable {
+
+    private String author;
+    private String name;
+
+    public BookId() {
+    }
+
+    public BookId(String author, String name) {
+        this.author = author;
+        this.name = name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        BookId bookId = (BookId) o;
+        return Objects.equals(author, bookId.author) && Objects.equals(name, bookId.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(author, name);
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/composite/repository/BookRepository.java

@@ -0,0 +1,18 @@
+package com.baeldung.composite.repository;
+
+import com.baeldung.composite.entity.Book;
+import com.baeldung.composite.entity.BookId;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface BookRepository extends JpaRepository<Book, BookId> {
+
+    List<Book> findByIdName(String name);
+
+    List<Book> findByIdAuthor(String author);
+
+    List<Book> findByGenre(String genre);
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/AccountApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.schemageneration;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class AccountApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AccountApplication.class, args);
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/HibernateUtil.java

@@ -0,0 +1,39 @@
+package com.baeldung.schemageneration;
+
+import com.baeldung.schemageneration.model.Account;
+import com.baeldung.schemageneration.model.AccountSetting;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistry;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.cfg.Environment;
+import org.hibernate.tool.hbm2ddl.SchemaExport;
+import org.hibernate.tool.schema.TargetType;
+
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Map;
+
+public class HibernateUtil {
+
+    /**
+     * Generates database create commands for the specified entities using Hibernate native API, SchemaExport.
+     * Creation commands are exported into the create.sql file.
+     */
+    public static void generateSchema() {
+        Map<String, String> settings = new HashMap<>();
+        settings.put(Environment.URL, "jdbc:h2:mem:schema");
+
+        StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(settings).build();
+
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addAnnotatedClass(Account.class);
+        metadataSources.addAnnotatedClass(AccountSetting.class);
+        Metadata metadata = metadataSources.buildMetadata();
+
+        SchemaExport schemaExport = new SchemaExport();
+        schemaExport.setFormat(true);
+        schemaExport.setOutputFile("create.sql");
+        schemaExport.createOnly(EnumSet.of(TargetType.SCRIPT), metadata);
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/model/Account.java

@@ -0,0 +1,74 @@
+package com.baeldung.schemageneration.model;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "accounts")
+public class Account {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Column(nullable = false, length = 100)
+    private String name;
+
+    @Column(name = "email_address")
+    private String emailAddress;
+
+    @OneToMany(mappedBy = "account", cascade = CascadeType.ALL)
+    private List<AccountSetting> accountSettings = new ArrayList<>();
+
+    public Account() {
+    }
+
+    public Account(String name, String emailAddress) {
+        this.name = name;
+        this.emailAddress = emailAddress;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmailAddress() {
+        return emailAddress;
+    }
+
+    public void setEmailAddress(String emailAddress) {
+        this.emailAddress = emailAddress;
+    }
+
+    public List<AccountSetting> getAccountSettings() {
+        return accountSettings;
+    }
+
+    public void setAccountSettings(List<AccountSetting> accountSettings) {
+        this.accountSettings = accountSettings;
+    }
+
+    public void addAccountSetting(AccountSetting setting) {
+        this.accountSettings.add(setting);
+        setting.setAccount(this);
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/model/AccountSetting.java

@@ -0,0 +1,68 @@
+package com.baeldung.schemageneration.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "account_settings")
+public class AccountSetting {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    @Column(name = "name", nullable = false)
+    private String settingName;
+
+    @Column(name = "value", nullable = false)
+    private String settingValue;
+
+    @ManyToOne()
+    @JoinColumn(name ="account_id", nullable = false)
+    private Account account;
+
+    public AccountSetting() {
+    }
+
+    public AccountSetting(String settingName, String settingValue) {
+        this.settingName = settingName;
+        this.settingValue = settingValue;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getSettingName() {
+        return settingName;
+    }
+
+    public void setSettingName(String settingName) {
+        this.settingName = settingName;
+    }
+
+    public String getSettingValue() {
+        return settingValue;
+    }
+
+    public void setSettingValue(String settingValue) {
+        this.settingValue = settingValue;
+    }
+
+    public Account getAccount() {
+        return account;
+    }
+
+    public void setAccount(Account account) {
+        this.account = account;
+    }
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/repository/AccountRepository.java

@@ -0,0 +1,8 @@
+package com.baeldung.schemageneration.repository;
+
+import com.baeldung.schemageneration.model.Account;
+import org.springframework.data.repository.CrudRepository;
+
+public interface AccountRepository extends CrudRepository<Account, Long> {
+    Account findByName(String name);
+}

persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/repository/AccountSettingRepository.java

@@ -0,0 +1,8 @@
+package com.baeldung.schemageneration.repository;
+
+import com.baeldung.schemageneration.model.AccountSetting;
+import org.springframework.data.repository.CrudRepository;
+
+public interface AccountSettingRepository extends CrudRepository<AccountSetting, Long> {
+    AccountSetting findByAccountId(Long accountId);
+}

persistence-modules/spring-data-jpa-5/src/main/resources/application.properties

@@ -0,0 +1,13 @@
+
+spring.datasource.url=jdbc:h2:mem:baeldung
+
+# JPA-Schema-Generation
+# Use below configuration to generate database schema create commands based on the entity models
+# and export them into the create.sql file
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.action=create
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-target=create.sql
+#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-source=metadata
+#spring.jpa.properties.hibernate.format_sql=true
+
+spring.jpa.show-sql=true
+

persistence-modules/spring-data-jpa-5/src/test/java/com/baeldung/composite/repository/BookRepositoryIntegrationTest.java

@@ -0,0 +1,64 @@
+package com.baeldung.composite.repository;
+
+import com.baeldung.composite.BookApplication;
+import com.baeldung.composite.entity.Book;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = BookApplication.class)
+public class BookRepositoryIntegrationTest {
+
+    public static final String JAVA_101 = "Java101";
+    public static final String JANE = "Jane";
+    public static final String TECH = "Tech";
+    @Autowired
+    BookRepository repository;
+
+    @Before
+    public void setUp() {
+        Book book1 = new Book("John", JAVA_101, TECH, 20);
+        Book book2 = new Book(JANE, JAVA_101, "Arch", 25);
+        Book book3 = new Book(JANE, "Scala101", TECH, 23);
+
+        repository.saveAll(Arrays.asList(book1, book2, book3));
+    }
+
+    @After
+    public void tearDown() {
+        repository.deleteAll();
+    }
+
+    @Test
+    public void testFindByName() {
+        List<Book> books = repository.findByIdName(JAVA_101);
+
+        assertEquals(2, books.size());
+    }
+
+    @Test
+    public void testFindByAuthor() {
+        List<Book> books = repository.findByIdAuthor(JANE);
+
+        assertEquals(2, books.size());
+    }
+
+    @Test
+    public void testFindByGenre() {
+        List<Book> books = repository.findByGenre(TECH);
+
+        assertEquals(2, books.size());
+    }
+}

persistence-modules/spring-data-jpa-5/src/test/java/com/baeldung/schemageneration/AccountRepositoryIntegrationTest.java

@@ -0,0 +1,72 @@
+package com.baeldung.schemageneration;
+
+import com.baeldung.schemageneration.model.Account;
+import com.baeldung.schemageneration.model.AccountSetting;
+import com.baeldung.schemageneration.repository.AccountRepository;
+import com.baeldung.schemageneration.repository.AccountSettingRepository;
+import org.junit.After;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = AccountApplication.class)
+public class AccountRepositoryIntegrationTest {
+
+    private static final String USER_NAME = "Eduard";
+    private static final String USER_EMAIL_ADDRESS = "eduard@gmx.com";
+    private static final String ACCOUNT_SETTING_NAME = "Timezone";
+    private static final String ACCOUNT_SETTING_VALUE = "UTC+02";
+
+    @Autowired
+    private AccountRepository accountRepository;
+
+    @Autowired
+    private AccountSettingRepository accountSettingRepository;
+
+    @After
+    public void tearDown() {
+        accountRepository.deleteAll();
+    }
+
+    @Test
+    public void givenNewAccount_whenSave_thenSuccess() {
+        Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
+        accountRepository.save(account);
+
+        assertEquals(1, accountRepository.count());
+    }
+
+    @Test
+    public void givenSavedAccount_whenFindByName_thenFound() {
+        Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
+        accountRepository.save(account);
+
+        Account accountFound = accountRepository.findByName(USER_NAME);
+
+        assertNotNull(accountFound);
+        assertEquals(USER_NAME, accountFound.getName());
+        assertEquals(USER_EMAIL_ADDRESS, accountFound.getEmailAddress());
+    }
+
+    @Test
+    public void givenSavedAccount_whenAccountSettingIsAdded_thenPersisted() {
+        Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
+        account.addAccountSetting(new AccountSetting(ACCOUNT_SETTING_NAME, ACCOUNT_SETTING_VALUE));
+        accountRepository.save(account);
+
+        Account accountFound = accountRepository.findByName(USER_NAME);
+        assertNotNull(accountFound);
+        AccountSetting accountSetting = accountSettingRepository.findByAccountId(accountFound.getId());
+
+        assertNotNull(accountSetting);
+        assertEquals(ACCOUNT_SETTING_NAME, accountSetting.getSettingName());
+        assertEquals(ACCOUNT_SETTING_VALUE, accountSetting.getSettingValue());
+    }
+
+}

persistence-modules/spring-data-jpa-5/src/test/resources/application-test.properties

@@ -0,0 +1,3 @@
+spring.jpa.hibernate.ddl-auto=update
+spring.datasource.url=jdbc:h2:mem:baeldung
+