BAEL-6128 - New interfaces in Spring Data 3

persistence-modules/spring-data-jpa-repo-3/README.md

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+## Spring Data JPA - Repositories
+
+This module contains articles about Spring Data JPA.
+
+### Relevant Articles:
+- More articles: [[<-- prev]](../spring-data-jpa-repo-2)

persistence-modules/spring-data-jpa-repo-3/pom.xml

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+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-3</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-3</relativePath>
+    </parent>
+    <artifactId>spring-data-jpa-repo-3</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>spring-data-jpa-repo-3</name>
+    <description>spring-data-jpa-repo-3</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+
+</project>

persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/listrepositories/Application.java

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+package com.baeldung.spring.data.jpa.listrepositories;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootApplication.class, args);
+    }
+}

persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/listrepositories/entity/Book.java

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+package com.baeldung.spring.data.jpa.listrepositories.entity;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Book {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String title;
+    private String author;
+    private String isbn;
+
+    public Book() {
+    }
+
+    public Book(String title, String author, String isbn) {
+        this.title = title;
+        this.author = author;
+        this.isbn = isbn;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+}

persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/listrepositories/repository/BookListRepository.java

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+package com.baeldung.spring.data.jpa.listrepositories.repository;
+
+import com.baeldung.spring.data.jpa.listrepositories.entity.Book;
+import org.springframework.data.repository.ListCrudRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface BookListRepository extends ListCrudRepository<Book, Long> {
+
+    List<Book> findBooksByAuthor(String author);
+}

persistence-modules/spring-data-jpa-repo-3/src/main/java/com/baeldung/spring/data/jpa/listrepositories/repository/BookPagingAndSortingRepository.java

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+package com.baeldung.spring.data.jpa.listrepositories.repository;
+
+import com.baeldung.spring.data.jpa.listrepositories.entity.Book;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.repository.ListCrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface BookPagingAndSortingRepository extends PagingAndSortingRepository<Book, Long>, ListCrudRepository<Book, Long> {
+
+    List<Book> findBooksByAuthor(String author, Pageable pageable);
+}

persistence-modules/spring-data-jpa-repo-3/src/main/resources/application.properties

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+

persistence-modules/spring-data-jpa-repo-3/src/test/java/com/baeldung/spring/data/jpa/listrepositories/repository/BookListRepositoryIntegrationTest.java

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+package com.baeldung.spring.data.jpa.listrepositories.repository;
+
+import com.baeldung.spring.data.jpa.listrepositories.entity.Book;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import java.util.Arrays;
+import java.util.List;
+
+@SpringBootTest
+public class BookListRepositoryIntegrationTest {
+
+    @Autowired
+    private BookListRepository bookListRepository;
+
+    @Test
+    public void givenDbContainsBooks_whenFindBooksByAuthor_thenReturnBooksByAuthor() {
+        Book book1 = new Book("Spring Data", "John Doe", "1234567890");
+        Book book2 = new Book("Spring Data 2", "John Doe", "1234567891");
+        Book book3 = new Book("Spring Data 3", "John Doe", "1234567892");
+        bookListRepository.saveAll(Arrays.asList(book1, book2, book3));
+
+        List<Book> books = bookListRepository.findBooksByAuthor("John Doe");
+        Assertions.assertEquals(3, books.size());
+    }
+}

persistence-modules/spring-data-jpa-repo-3/src/test/java/com/baeldung/spring/data/jpa/listrepositories/repository/BookPagingAndSortingRepositoryIntegrationTest.java

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+package com.baeldung.spring.data.jpa.listrepositories.repository;
+
+import com.baeldung.spring.data.jpa.listrepositories.entity.Book;
+import com.baeldung.spring.data.jpa.listrepositories.repository.BookPagingAndSortingRepository;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+
+import java.util.Arrays;
+import java.util.List;
+
+@SpringBootTest
+public class BookPagingAndSortingRepositoryIntegrationTest {
+
+    @Autowired
+    private BookPagingAndSortingRepository bookPagingAndSortingRepository;
+
+    @Test
+    public void givenDbContainsBooks_whenfindBooksByAuthor_thenReturnBooksByAuthor() {
+        Book book1 = new Book("Spring Data", "John Doe", "1234567890");
+        Book book2 = new Book("Spring Data 2", "John Doe", "1234567891");
+        Book book3 = new Book("Spring Data 3", "John Doe", "1234567892");
+        bookPagingAndSortingRepository.saveAll(Arrays.asList(book1, book2, book3));
+
+        Pageable pageable = PageRequest.of(0, 2, Sort.by("title").descending());
+        List<Book> books = bookPagingAndSortingRepository.findBooksByAuthor("John Doe", pageable);
+        Assertions.assertEquals(2, books.size());
+        Assertions.assertEquals(book3.getId(), books.get(0).getId());
+        Assertions.assertEquals(book2.getId(), books.get(1).getId());
+    }
+}