Code sample - SpringBoot Hikari to UCP migration

java/springboot-hikari-ucp/README.md

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+# springboot-hikari-ucp
+[A Guide to Migrating from HikariCP to Oracle UCP (Universal Connection Pool)](https://juarezjunior.medium.com/e2f3fb6db2d5)

java/springboot-hikari-ucp/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>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.0.0</version>
+		<relativePath /> <!-- lookup parent from repository -->
+	</parent>
+
+	<groupId>com.oracle.dev.jdbc</groupId>
+	<artifactId>springboot-hikari-ucp</artifactId>
+	<version>1.0-SNAPSHOT</version>
+	<name>springboot-hikari-ucp</name>
+	<description>A Guide to Migrating from HikariCP to Oracle UCP (Universal
+		Connection Pool)</description>
+	<url>https://juarezjunior.medium.com/e2f3fb6db2d5</url>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+	</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>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>com.oracle.database.jdbc</groupId>
+			<artifactId>ojdbc11</artifactId>
+			<version>23.3.0.23.09</version>
+		</dependency>
+		<dependency>
+			<groupId>com.oracle.database.jdbc</groupId>
+			<artifactId>ucp11</artifactId>
+			<version>23.3.0.23.09</version>
+		</dependency>
+
+		<!-- Metrics -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.hibernate.orm.tooling</groupId>
+				<artifactId>hibernate-enhance-maven-plugin</artifactId>
+				<version>${hibernate.version}</version>
+				<executions>
+					<execution>
+						<id>enhance</id>
+						<goals>
+							<goal>enhance</goal>
+						</goals>
+						<configuration>
+							<enableLazyInitialization>true</enableLazyInitialization>
+							<enableDirtyTracking>true</enableDirtyTracking>
+							<enableAssociationManagement>true</enableAssociationManagement>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<compilerArgs>
+
+					</compilerArgs>
+				</configuration>
+			</plugin>
+
+		</plugins>
+	</build>
+
+
+</project>

java/springboot-hikari-ucp/script/UCPSpringBoot.sql

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+CREATE USER UCP_USER IDENTIFIED BY <YOUR_PASSWORD>;
+GRANT DWROLE TO UCP_USER;
+GRANT CREATE SESSION TO UCP_USER;
+GRANT UNLIMITED TABLESPACE TO UCP_USER;
+ALTER SESSION SET CURRENT_SCHEMA = UCP_USER;
+
+CREATE TABLE Employee
+   (id NUMBER(10) CONSTRAINT pk_employee PRIMARY KEY,
+	name VARCHAR2(20),
+	job VARCHAR2(20),	
+	salary NUMBER(10),
+	commission NUMBER(10));
+
+INSERT INTO Employee VALUES(7369,'JOHN','CLERK',7902,NULL);
+INSERT INTO Employee VALUES(7499,'PETER','SALESMAN',7698,300);
+INSERT INTO Employee VALUES(7521,'JEFF','SALESMAN',7698,500);
+INSERT INTO Employee VALUES(7566,'MARK','MANAGER',7839,NULL);
+INSERT INTO Employee VALUES(7654,'MARTIN','SALESMAN',7698,1400);
+INSERT INTO Employee VALUES(7698,'ADAM','MANAGER',7839,NULL);
+INSERT INTO Employee VALUES(7782,'CLARK','MANAGER',7839,NULL);
+INSERT INTO Employee VALUES(7788,'SCOTT','ANALYST',7566,NULL);
+INSERT INTO Employee VALUES(7839,'KING','PRESIDENT',NULL);
+INSERT INTO Employee VALUES(7844,'TURNER','SALESMAN',0);
+INSERT INTO Employee VALUES(7876,'ADAMS','CLERK',7788,NULL);
+INSERT INTO Employee VALUES(7900,'JAMES','CLERK',7698,NULL);
+INSERT INTO Employee VALUES(7902,'FORD','ANALYST',7566,NULL);
+INSERT INTO Employee VALUES(7934,'MILLER','CLERK',7782,NULL);
+
+COMMIT;
+
+
+
+

java/springboot-hikari-ucp/src/main/java/com/oracle/dev/jdbc/ucp/spring/Employee.java

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+/*
+  Copyright (c) 2021, 2022, Oracle and/or its affiliates.
+
+  This software is dual-licensed to you under the Universal Permissive License
+  (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License
+  2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
+  either license.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+package com.oracle.dev.jdbc.ucp.spring;
+
+import java.util.Objects;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "EMPLOYEE", schema = "ADMIN")
+//@Table(name = "EMPLOYEE", schema = "MYTODOLIST")
+public class Employee {
+
+	private @Id @GeneratedValue Long id;
+	private String name;
+	private String job;
+	private Integer salary;
+	private Integer commission;
+
+	public Employee() {
+	}
+
+	public Employee(Long id, String name, String job, Integer salary, Integer commission) {
+		this.id = id;
+		this.name = name;
+		this.job = job;
+		this.salary = salary;
+		this.commission = commission;
+	}
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getJob() {
+		return job;
+	}
+
+	public void setJob(String job) {
+		this.job = job;
+	}
+
+	public Integer getSalary() {
+		return salary;
+	}
+
+	public void setSalary(Integer salary) {
+		this.salary = salary;
+	}
+
+	public Integer getCommission() {
+		return commission;
+	}
+
+	public void setCommission(Integer commission) {
+		this.commission = commission;
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(commission, id, job, name, salary);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Employee other = (Employee) obj;
+		return Objects.equals(commission, other.commission) && Objects.equals(id, other.id)
+				&& Objects.equals(job, other.job) && Objects.equals(name, other.name) && Objects.equals(salary, other.salary);
+	}
+
+	public String toString() {
+		return String.format("%20s %20s %20s %20s %20s", id, name, job, salary, commission);
+
+	}
+}

java/springboot-hikari-ucp/src/main/java/com/oracle/dev/jdbc/ucp/spring/EmployeeApplication.java

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+/*
+  Copyright (c) 2021, 2022, Oracle and/or its affiliates.
+
+  This software is dual-licensed to you under the Universal Permissive License
+  (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License
+  2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
+  either license.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+package com.oracle.dev.jdbc.ucp.spring;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class EmployeeApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(EmployeeApplication.class, args);
+	}
+
+}

java/springboot-hikari-ucp/src/main/java/com/oracle/dev/jdbc/ucp/spring/EmployeeController.java

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+/*
+  Copyright (c) 2021, 2022, Oracle and/or its affiliates.
+
+  This software is dual-licensed to you under the Universal Permissive License
+  (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License
+  2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
+  either license.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+     https://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+package com.oracle.dev.jdbc.ucp.spring;
+
+import java.util.List;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+class EmployeeController {
+
+	private final EmployeeRepository repository;
+
+	EmployeeController(EmployeeRepository repository) {
+		this.repository = repository;
+	}
+
+	@GetMapping("/employees")
+	List<Employee> all() {
+		return repository.findAll();
+	}
+
+	@PostMapping("/employees")
+	Employee newEmployee(@RequestBody Employee newEmployee) {
+		return repository.save(newEmployee);
+	}
+
+	@GetMapping("/employees/{id}")
+	Employee one(@PathVariable Long id) {
+
+		return repository.findById(id).orElseThrow(() -> new EmployeeNotFoundException(id));
+	}
+
+	@PutMapping("/employees/{id}")
+	Employee replaceEmployee(@RequestBody Employee newEmployee, @PathVariable Long id) {
+
+		return repository.findById(id).map(employee -> {
+			employee.setName(newEmployee.getName());
+			employee.setJob(newEmployee.getJob());
+			return repository.save(employee);
+		}).orElseGet(() -> {
+			newEmployee.setId(id);
+			return repository.save(newEmployee);
+		});
+	}
+
+	@DeleteMapping("/employees/{id}")
+	void deleteEmployee(@PathVariable Long id) {
+		repository.deleteById(id);
+	}
+}