package com.sishuok.spring.service;
import com.sishuok.spring.entity.User;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import java.util.HashSet;
import java.util.Set;
/**
* <p>User: Zhang Kaitao
* <p>Date: 14-1-1
* <p>Version: 1.0
*/
@Service
public class UserService {
Set<User> users = new HashSet<User>();
@CachePut(value = "user", key = "#user.id")
public User save(User user) {
users.add(user);
return user;
}
@CachePut(value = "user", key = "#user.id")
public User update(User user) {
users.remove(user);
users.add(user);
return user;
}
@CacheEvict(value = "user", key = "#user.id")
public User delete(User user) {
users.remove(user);
return user;
}
@CacheEvict(value = "user", allEntries = true)
public void deleteAll() {
users.clear();
}
@Cacheable(value = "user", key = "#id")
public User findById(final Long id) {
System.out.println("cache miss, invoke find by id, id:" + id);
for (User user : users) {
if (user.getId().equals(id)) {
return user;
}
}
return null;
}
}