spring-soap/spring-protobuf/src/main/java/com/baeldung/protobuf/CourseRepository.java

package com.baeldung.protobuf;

import com.baeldung.protobuf.BaeldungTraining.Course;

import java.util.Map;

public class CourseRepository {

    private final Map<Integer, Course> courses;
    
    public CourseRepository (Map<Integer, Course> courses) {
        this.courses = courses;
    }
    
    public Course getCourse(int id) {
        return courses.get(id);
    }
}