InheritanceType.TABLE_PER_CLASS

hibernate-inheritance3-tableperclass/pom.xml

@@ -0,0 +1,61 @@
+<?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>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.6.0</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>ru.sysout</groupId>
+	<artifactId>inherit1</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>inherit1</name>
+
+	<properties>
+		<java.version>11</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+			<version>42.3.1</version>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.junit.vintage</groupId>
+					<artifactId>junit-vintage-engine</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

hibernate-inheritance3-tableperclass/src/main/java/ru/sysout/SpringDataJpaApplication.java

@@ -0,0 +1,38 @@
+package ru.sysout;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import ru.sysout.dao.CustomerRepository;
+import ru.sysout.model.Customer;
+import ru.sysout.model.EmployeeCustomer;
+import ru.sysout.model.ExternalCustomer;
+
+import javax.annotation.PostConstruct;
+
+@SpringBootApplication
+public class SpringDataJpaApplication {
+    @Autowired
+    private CustomerRepository customerRepository;
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringDataJpaApplication.class, args);
+    }
+
+    @PostConstruct
+    void init() {
+        EmployeeCustomer employeeCustomer = new EmployeeCustomer();
+        employeeCustomer.setMonthsInCompany(10);
+        employeeCustomer.setName("Petr");
+        customerRepository.save(employeeCustomer);
+
+        ExternalCustomer externalCustomer = new ExternalCustomer();
+        externalCustomer.setSum(110);
+        externalCustomer.setName("Vasya");
+        customerRepository.save(externalCustomer);
+
+        Customer customer=new Customer();
+        customer.setName("ldld");
+        customerRepository.save(customer);
+    }
+}

hibernate-inheritance3-tableperclass/src/main/java/ru/sysout/dao/CustomerRepository.java

@@ -0,0 +1,8 @@
+package ru.sysout.dao;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import ru.sysout.model.Customer;
+
+public interface CustomerRepository extends JpaRepository<Customer, Long> {
+
+}

hibernate-inheritance3-tableperclass/src/main/java/ru/sysout/model/Customer.java

@@ -0,0 +1,22 @@
+package ru.sysout.model;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@Data
+@NoArgsConstructor
+@Entity
+@Inheritance(
+        strategy = InheritanceType.TABLE_PER_CLASS
+)
+public class Customer {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+    private String name;
+
+    public Customer(String name){
+        this.name =name;
+    }
+}

hibernate-inheritance3-tableperclass/src/main/java/ru/sysout/model/EmployeeCustomer.java

@@ -0,0 +1,11 @@
+package ru.sysout.model;
+
+import lombok.Data;
+
+import javax.persistence.Entity;
+
+@Entity
+@Data
+public class EmployeeCustomer extends Customer {
+    private int monthsInCompany;
+}

hibernate-inheritance3-tableperclass/src/main/java/ru/sysout/model/ExternalCustomer.java

@@ -0,0 +1,11 @@
+package ru.sysout.model;
+
+import lombok.Data;
+
+import javax.persistence.Entity;
+
+@Data
+@Entity
+public class ExternalCustomer extends Customer {
+   private long sum;
+}

hibernate-inheritance3-tableperclass/src/main/resources/application.yml

@@ -0,0 +1,9 @@
+spring:
+  datasource:
+      url: jdbc:postgresql://localhost/inherit
+      username: postgres
+      password: qqq
+  jpa:
+    show-sql: true
+    hibernate:
+      ddl-auto: create