Spring data rest many to many

Author: giaunv

springboot-examples/springdatarest-mysql-many-to-many/.gitignore

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+target
+*.iml
+.idea

springboot-examples/springdatarest-mysql-many-to-many/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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.hellokoding.springdatarest</groupId>
+	<artifactId>restfull.maytomany</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.1.4.RELEASE</version>
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-rest</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+</project>

springboot-examples/springdatarest-mysql-many-to-many/src/main/java/com/hellokoding/restfulapi/Application.java

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

springboot-examples/springdatarest-mysql-many-to-many/src/main/java/com/hellokoding/restfulapi/model/Author.java

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+package com.hellokoding.restfulapi.model;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+public class Author {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    private String name;
+
+    @ManyToMany(mappedBy = "authors")
+    private Set<Book> books;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+}

springboot-examples/springdatarest-mysql-many-to-many/src/main/java/com/hellokoding/restfulapi/model/Book.java

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+package com.hellokoding.restfulapi.model;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+public class Book{
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    private String title;
+
+    private String description;
+
+    @ManyToMany(cascade = CascadeType.ALL)
+    @JoinTable(name = "book_author", joinColumns = @JoinColumn(name = "book_id", referencedColumnName = "id"), inverseJoinColumns = @JoinColumn(name = "author_id", referencedColumnName = "id"))
+    private Set<Author> authors;
+
+    public Book() {
+
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<Author> authors) {
+        this.authors = authors;
+    }
+
+}

springboot-examples/springdatarest-mysql-many-to-many/src/main/java/com/hellokoding/restfulapi/repository/AuthorRepository.java

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+package com.hellokoding.restfulapi.repository;
+
+import com.hellokoding.restfulapi.model.Author;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface AuthorRepository extends JpaRepository<Author, Integer>{
+}

springboot-examples/springdatarest-mysql-many-to-many/src/main/java/com/hellokoding/restfulapi/repository/BookRepository.java

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+package com.hellokoding.restfulapi.repository;
+
+import com.hellokoding.restfulapi.model.Book;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface BookRepository extends JpaRepository<Book, Integer>{
+}

springboot-examples/springdatarest-mysql-many-to-many/src/main/resources/application.properties

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+spring.datasource.url=jdbc:mysql://localhost/test?useSSL=false
+spring.datasource.username=root
+spring.datasource.password=hellokoding
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+
+spring.datasource.initialization-mode=always
+spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.database-platform=org.hibernate.dialect.MySQL57Dialect
+spring.jpa.generate-ddl=true
+spring.jpa.show-sql=true