Code sample - SpringBoot Hikari to UCP migration

java/springboot-hikari-ucp/README.md

@@ -0,0 +1,2 @@
+# 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

@@ -0,0 +1,103 @@
+<?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>21</maven.compiler.source>
+    <maven.compiler.target>21</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>23.4.0.24.05</version>
+    </dependency>
+    <dependency>
+      <groupId>com.oracle.database.jdbc</groupId>
+      <artifactId>ucp11</artifactId>
+      <version>23.4.0.24.05</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

@@ -0,0 +1,33 @@
+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

@@ -0,0 +1,118 @@
+/*
+  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 = "<YOUR_SCHEMA>")
+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

@@ -0,0 +1,34 @@
+/*
+  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

@@ -0,0 +1,78 @@
+/*
+  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);
+  }
+}