wehub-resource-sync
67 lines
1.4 KiB
Java
67 lines
1.4 KiB
Java
package com.example.auth;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Optional;
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public interface UserRepository {
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Optional<User> findById(int id);
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void save(User user);
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}
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class User {
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private int id;
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private String name;
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private String email;
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public User(int id, String name, String email) {
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this.id = id;
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this.name = name;
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this.email = email;
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}
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public int getId() { return id; }
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public String getName() { return name; }
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public String getEmail() { return email; }
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}
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class InMemoryRepo implements UserRepository {
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private Map<Integer, User> users = new HashMap<>();
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@Override
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public Optional<User> findById(int id) {
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return Optional.ofNullable(users.get(id));
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}
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@Override
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public void save(User user) {
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users.put(user.getId(), user);
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System.out.println("Saved user " + user.getId());
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}
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}
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class UserService {
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private final UserRepository repo;
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public UserService(UserRepository repo) {
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this.repo = repo;
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}
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public User createUser(String name, String email) {
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User user = new User(1, name, email);
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repo.save(user);
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return user;
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}
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public Optional<User> getUser(int id) {
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return repo.findById(id);
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}
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}
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class CachedRepo extends InMemoryRepo {
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@Override
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public void save(User user) {
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super.save(user);
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}
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}
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