Code Sample for spring_jdbc Getting started

java/spring_jdbc_example/README.md

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+# SpringBoot JDBC Code Sample
+
+This is the code sample that accompanies the "Getting Started with SpringBoot & JDBC" 
+video. This showcases using JDBC with UCP in a simple application, utilizing JPA to 
+retrieve the data from the Autonomous Database.
+
+# Main Components of the Code
+
+* TestController.java: Has one get mapping that uses StudentService to retrieve all the Students
+* Student.java: Models the Student class to the Students table in the database
+* StudentRepository.java: Extends JpaRepository to utilize built-in queries
+* StudentService.java: Implements one method that retrieves all students
+* application.properties: provides database connection information along with UCP
+

java/spring_jdbc_example/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>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.6.7</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>demo</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>demo</name>
+	<description>Demo project for Spring Boot</description>
+	<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.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.oracle.database.jdbc</groupId>
+			<artifactId>ojdbc11-production</artifactId>
+			<version>21.1.0.0</version>
+			<type>pom</type>
+		</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>

java/spring_jdbc_example/src/main/java/com/example/demo/DemoApplication.java

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+/* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+Licensed under the Universal Permissive License v 1.0
+as shown at http://oss.oracle.com/licenses/upl */
+
+/*
+ DESCRIPTION
+ This is the main class that runs the springboot application
+
+ Peter Song    05/11/2022 - Creation
+ */
+
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(DemoApplication.class, args);
+	}
+
+}

java/spring_jdbc_example/src/main/java/com/example/demo/Service/StudentService.java

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+/* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+Licensed under the Universal Permissive License v 1.0
+as shown at http://oss.oracle.com/licenses/upl */
+
+/*
+ DESCRIPTION
+ The code sample maps uses the jpaRepository to return
+ all students
+
+ Peter Song    05/11/2022 - Creation
+ */
+
+package com.example.demo.Service;
+
+
+import com.example.demo.model.Student;
+import com.example.demo.repository.StudentRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class StudentService {
+    @Autowired
+    private StudentRepository studentRepository;
+    public List<Student> findAll(){
+        List<Student> students = studentRepository.findAll();
+        return students;
+    }
+}

java/spring_jdbc_example/src/main/java/com/example/demo/controller/TestController.java

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+/* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+Licensed under the Universal Permissive License v 1.0
+as shown at http://oss.oracle.com/licenses/upl */
+
+/*
+ DESCRIPTION
+ This code sample calls upon a rest endpoint to retrieve all students.
+ It is part of the greater
+
+ peter song    05/11/2022 - Creation
+ */
+
+package com.example.demo.controller;
+
+
+import com.example.demo.Service.StudentService;
+import com.example.demo.model.Student;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+public class TestController {
+    @Autowired
+    private StudentService studentService;
+    @GetMapping(value = "/students")
+    public List<Student> getAllStudents(){
+        return studentService.findAll();
+    }
+
+}

java/spring_jdbc_example/src/main/java/com/example/demo/model/Student.java

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+/* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+Licensed under the Universal Permissive License v 1.0
+as shown at http://oss.oracle.com/licenses/upl */
+
+/*
+ DESCRIPTION
+ The code sample maps the students table from Autonomous Database
+ to this students class, using JPA
+
+ Peter Song    05/11/2022 - Creation
+ */
+
+package com.example.demo.model;
+
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "Students")
+public class Student {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    int ID;
+    @Column(name = "first_name")
+    String first_name;
+    @Column(name = "last_name")
+    String last_name;
+    public Student(){
+
+    }
+    public Student(int ID, String first_name, String last_name) {
+        this.ID = ID;
+        this.first_name = first_name;
+        this.last_name = last_name;
+    }
+
+    public int getID() {
+        return ID;
+    }
+
+    public void setID(int ID) {
+        this.ID = ID;
+    }
+
+    public String getFirst_name() {
+        return first_name;
+    }
+
+    public void setFirst_name(String first_name) {
+        this.first_name = first_name;
+    }
+
+    public String getLast_name() {
+        return last_name;
+    }
+
+    public void setLast_name(String last_name) {
+        this.last_name = last_name;
+    }
+
+    @Override
+    public String toString() {
+        return "Student{" +
+                "ID=" + ID +
+                ", first_name='" + first_name + '\'' +
+                ", last_name='" + last_name + '\'' +
+                '}';
+    }
+}

java/spring_jdbc_example/src/main/java/com/example/demo/repository/StudentRepository.java

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+/* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+Licensed under the Universal Permissive License v 1.0
+as shown at http://oss.oracle.com/licenses/upl */
+
+/*
+ DESCRIPTION
+ The code sample extends the JpaRepository
+ to take advantage of built-in queries provided
+ by JPA
+
+ Peter Song    05/11/2022 - Creation
+ */
+
+package com.example.demo.repository;
+
+
+import com.example.demo.model.Student;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import javax.transaction.Transactional;
+
+@Repository
+@Transactional
+@EnableTransactionManagement
+public interface StudentRepository extends JpaRepository<Student, Integer> {
+
+
+}

java/spring_jdbc_example/src/main/resources/application.properties

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+#Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+#Licensed under the Universal Permissive License v 1.0
+#as shown at http://oss.oracle.com/licenses/upl */
+#
+#
+#DESCRIPTION
+# This application.properties class provides the relevant information to connect
+# to an Oracle Autonomous Database.
+#Peter Song    05/11/2022 - Creation
+#
+
+spring.datasource.driver-class-name=oracle.jdbc.OracleDriver
+spring.datasource.url=jdbc:oracle:thin:@adbps_medium?TNS_ADMIN=/Users/psong/Desktop/JDBC_vid_series/Wallet_ADBPS
+spring.datasource.username=ADMIN
+spring.datasource.password=WELcome__12345
+spring.jpa.database-platform=org.hibernate.dialect.Oracle12cDialect
+oracle.jdbc.fanEnabled=false
+
+#UCP Properties
+spring.datasource.type=oracle.ucp.jdbc.PoolDataSource
+spring.datasource.oracleucp.connection-factory-class-name=oracle.jdbc.pool.OracleDataSource
+spring.datasource.oracleucp.sql-for-validate-connection=select * from dual
+spring.datasource.oracleucp.connection-pool-name=connectionPoolName1
+spring.datasource.oracleucp.initial-pool-size=15
+spring.datasource.oracleucp.min-pool-size=10
+spring.datasource.oracleucp.max-pool-size=30

java/spring_jdbc_example/src/test/java/com/example/demo/DemoApplicationTests.java

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+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}