Merge pull request #2 from hanshulll/development

Added code to work with jpa in springboot application

Author: hanshulll

spring-data-jpa/pom.xml

@@ -0,0 +1,59 @@
+<?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>3.4.3</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.hanshul</groupId>
+	<artifactId>spring-data-jpa</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>spring-data-jpa</name>
+	<description>Demo project for Spring Boot</description>
+	<url/>
+	<licenses>
+		<license/>
+	</licenses>
+	<developers>
+		<developer/>
+	</developers>
+	<scm>
+		<connection/>
+		<developerConnection/>
+		<tag/>
+		<url/>
+	</scm>
+	<properties>
+		<java.version>17</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>
+			<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>

spring-data-jpa/src/main/java/com/hanshul/spring_data_jpa/SpringDataJpaApplication.java

@@ -0,0 +1,39 @@
+package com.hanshul.spring_data_jpa;
+
+import com.hanshul.spring_data_jpa.model.Student;
+import com.hanshul.spring_data_jpa.repository.StudentRepository;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+
+@SpringBootApplication
+public class SpringDataJpaApplication {
+
+	public static void main(String[] args) {
+		ApplicationContext context=	SpringApplication.run(SpringDataJpaApplication.class, args);
+		Student s1= context.getBean(Student.class);
+		Student s2=context.getBean(Student.class);
+		Student s3=context.getBean(Student.class);
+
+		StudentRepository repo=context.getBean(StudentRepository.class);
+
+		s1.setRollNo(101);
+		s1.setName("Hanshul");
+		s1.setMarks(100);
+
+
+		s2.setRollNo(102);
+		s2.setName("Sharad");
+		s2.setMarks(100);
+
+
+		s3.setRollNo(103);
+		s3.setName("Harsh");
+		s3.setMarks(100);
+
+		repo.save(s1);
+		repo.save(s2);
+		repo.save(s3);
+	}
+
+}

spring-data-jpa/src/main/java/com/hanshul/spring_data_jpa/model/Student.java

@@ -0,0 +1,50 @@
+package com.hanshul.spring_data_jpa.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+@Component
+@Scope("prototype")
+@Entity
+public class Student {
+    @Id
+    private int rollNo;
+    private String name;
+    private int marks;
+
+    public int getRollNo() {
+        return rollNo;
+    }
+
+    public void setRollNo(int rollNo) {
+        this.rollNo = rollNo;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getMarks() {
+        return marks;
+    }
+
+    public void setMarks(int marks) {
+        this.marks = marks;
+    }
+
+    @Override
+    public String toString() {
+        return "Student{" +
+                "rollNo=" + rollNo +
+                ", name='" + name + '\'' +
+                ", marks=" + marks +
+                '}';
+    }
+}

spring-data-jpa/src/main/java/com/hanshul/spring_data_jpa/repository/StudentRepository.java

@@ -0,0 +1,9 @@
+package com.hanshul.spring_data_jpa.repository;
+
+import com.hanshul.spring_data_jpa.model.Student;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface StudentRepository extends JpaRepository<Student,Integer> {
+}

spring-data-jpa/src/main/resources/application.properties

@@ -0,0 +1,6 @@
+#spring.application.name=spring-data-jpa
+spring.datasource.url=jdbc:postgresql://localhost:5432/demo
+spring.datasource.username={{userName}}
+spring.datasource.password={{password}}
+spring.datasource.driver-class-name=org.postgresql.Driver
+spring.jpa.hibernate.ddl-auto=update

spring-data-jpa/src/test/java/com/hanshul/spring_data_jpa/SpringDataJpaApplicationTests.java

@@ -0,0 +1,13 @@
+package com.hanshul.spring_data_jpa;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SpringDataJpaApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}