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‎.env

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POSTGRES_DB=employeedb
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POSTGRES_PASSWORD=mysecretpassword
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POSTGRES_URL=host.docker.internal
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POSTGRES_USER=postgres
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HOST_URL=host.docker.internal

‎db-postgres/Dockerfile

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FROM postgres:14.7
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RUN chown -R postgres:postgres /docker-entrypoint-initdb.d/

‎db-postgres/create.sql

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CREATE SCHEMA IF NOT EXISTS "public";
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CREATE TABLE "public".employee (
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id SERIAL PRIMARY KEY,
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first_name VARCHAR(50),
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last_name VARCHAR(50),
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email VARCHAR(100),
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department VARCHAR(100),
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position VARCHAR(100),
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salary DECIMAL(10, 2),
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hire_date DATE
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);
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-- Insert sample records into the 'employee' table
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INSERT INTO employee (first_name, last_name, email, department, position, salary, hire_date)
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VALUES
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('John', 'Doe', '[email protected]', 'Engineering', 'Software Developer', 75000.00, '2020-01-15'),
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('Jane', 'Smith', '[email protected]', 'Marketing', 'Marketing Manager', 65000.00, '2019-08-01'),
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('Emily', 'Jones', '[email protected]', 'Human Resources', 'HR Coordinator', 55000.00, '2021-05-23');

‎docker-compose.yaml

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version: "3.8"
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services:
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db:
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build:
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context: ./db-postgres
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dockerfile: Dockerfile
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ports:
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- "5432:5432"
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volumes:
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- ./db-postgres/postgres-data:/var/lib/postgresql/data
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- ./db-postgres/create.sql:/docker-entrypoint-initdb.d/create.sql
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env_file:
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- .env
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app:
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depends_on:
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- db
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build:
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context: ./docker-postgres-spring-boot
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dockerfile: Dockerfile
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ports:
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- "8080:8080"
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env_file:
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- .env
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‎docker-postgres-spring-boot/Dockerfile

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FROM amazoncorretto:17-alpine-jdk
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WORKDIR /app
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# Install Maven
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RUN apk add --no-cache maven
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# Copy your project files and build the project
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COPY . .
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RUN mvn clean install -DskipTests
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ENTRYPOINT ["java","-jar","target/docker-postgres-spring-boot-1.0.jar"]

‎docker-postgres-spring-boot/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.2.2</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>org.purgatory</groupId>
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<artifactId>docker-postgres-spring-boot</artifactId>
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<version>1.0</version>
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<name>docker-postgres-spring-boot</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>17</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.postgresql</groupId>
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<artifactId>postgresql</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/DockerPostgresSpringBootApplication.java

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package org.purgatory.dockerpostgresspringboot;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class DockerPostgresSpringBootApplication {
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public static void main(String[] args) {
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SpringApplication.run(DockerPostgresSpringBootApplication.class, args);
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}
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/persistence/entity/EEmployee.java

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package org.purgatory.dockerpostgresspringboot.persistence.entity;
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import jakarta.persistence.*;
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import java.time.LocalDate;
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import lombok.*;
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@Entity
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@Getter
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@Setter
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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@Table(name = "employee")
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public class EEmployee {
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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int id;
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@Column(name = "first_name", nullable = false, length = 50)
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String firstName;
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@Column(name = "last_name", nullable = false, length = 50)
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String lastName;
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@Column(name = "email", nullable = false, length = 100)
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String email;
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@Column(name = "department", nullable = false, length = 100)
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String department;
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@Column(name = "position", nullable = false, length = 100)
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String position;
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@Column(name = "salary", nullable = false)
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double salary;
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@Column(name = "hire_date", nullable = false)
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LocalDate hireDate;
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/persistence/repository/EmployeeRepository.java

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package org.purgatory.dockerpostgresspringboot.persistence.repository;
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import java.util.Optional;
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import org.purgatory.dockerpostgresspringboot.persistence.entity.EEmployee;
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import org.springframework.data.jpa.repository.JpaRepository;
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import org.springframework.stereotype.Repository;
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@Repository
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public interface EmployeeRepository extends JpaRepository<EEmployee, Integer> {
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Optional<EEmployee> findByEmail(String email);
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/rest/controller/EmployeeController.java

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package org.purgatory.dockerpostgresspringboot.rest.controller;
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import java.net.URI;
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import java.time.LocalDate;
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import org.purgatory.dockerpostgresspringboot.persistence.entity.EEmployee;
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import org.purgatory.dockerpostgresspringboot.persistence.repository.EmployeeRepository;
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import org.purgatory.dockerpostgresspringboot.rest.model.Employee;
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import org.purgatory.dockerpostgresspringboot.rest.service.EmployeeService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.*;
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@RestController
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@RequestMapping("employee")
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public class EmployeeController {
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@Autowired
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EmployeeRepository employeeRepository;
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@GetMapping("{email}")
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public ResponseEntity<?> authenticate(@PathVariable String email) {
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return ResponseEntity.ok(employeeRepository.findByEmail(email));
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}
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@PostMapping
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public ResponseEntity<?> register(@RequestBody Employee request){
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employeeRepository.save(EEmployee.builder()
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.email(request.getEmail())
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.firstName(request.getFirstName())
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.lastName(request.getLastName())
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.salary(request.getSalary())
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.department(request.getDepartment())
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.position(request.getPosition())
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.hireDate(LocalDate.now())
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.build());
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return ResponseEntity.created(URI.create("/api/employee")).build();
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}
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/rest/model/Employee.java

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package org.purgatory.dockerpostgresspringboot.rest.model;
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import lombok.*;
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@Getter
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@Setter
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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public class Employee {
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String firstName;
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String lastName;
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String email;
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String department;
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String position;
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double salary;
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/rest/service/EmployeeService.java

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package org.purgatory.dockerpostgresspringboot.rest.service;
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import org.purgatory.dockerpostgresspringboot.persistence.entity.EEmployee;
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import org.purgatory.dockerpostgresspringboot.rest.model.Employee;
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import org.springframework.stereotype.Service;
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@Service
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public interface EmployeeService {
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EEmployee getEmployee(String email);
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void addEmployee(Employee request);
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}

‎docker-postgres-spring-boot/src/main/java/org/purgatory/dockerpostgresspringboot/rest/service/impl/EmployeeServiceImpl.java

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package org.purgatory.dockerpostgresspringboot.rest.service.impl;
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import lombok.extern.slf4j.Slf4j;
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import org.purgatory.dockerpostgresspringboot.persistence.entity.EEmployee;
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import org.purgatory.dockerpostgresspringboot.persistence.repository.EmployeeRepository;
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import org.purgatory.dockerpostgresspringboot.rest.model.Employee;
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import org.purgatory.dockerpostgresspringboot.rest.service.EmployeeService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.time.LocalDate;
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@Service
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@Slf4j
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public class EmployeeServiceImpl implements EmployeeService {
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@Autowired EmployeeRepository employeeRepository;
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@Override
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public EEmployee getEmployee(String email) {
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return employeeRepository.findByEmail(email).orElseThrow();
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}
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@Override
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public void addEmployee(Employee request) {
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employeeRepository.save(
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EEmployee.builder()
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.email(request.getEmail())
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.firstName(request.getFirstName())
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.lastName(request.getLastName())
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.salary(request.getSalary())
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.department(request.getDepartment())
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.position(request.getPosition())
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.hireDate(LocalDate.now())
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.build());
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}
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}

‎docker-postgres-spring-boot/src/main/resources/application.yml

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server:
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port: 8080
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servlet:
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context-path: /api
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spring:
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datasource:
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url: jdbc:postgresql://${POSTGRES_URL}:5432/${POSTGRES_DB}
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username: ${POSTGRES_USER}
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password: ${POSTGRES_PASSWORD}
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driver-class-name: org.postgresql.Driver
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jpa:
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database-platform: org.hibernate.dialect.PostgreSQLDialect
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logging:
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level:
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root: info
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#host:
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# url: ${HOST_URL}

‎docker-postgres-spring-boot/src/test/java/org/purgatory/dockerpostgresspringboot/DockerPostgresSpringBootApplicationTests.java

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package org.purgatory.dockerpostgresspringboot;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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@SpringBootTest
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class DockerPostgresSpringBootApplicationTests {
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@Test
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void contextLoads() {
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}
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}

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