4dkankan-center-user/src/main/java/com/fdkankan/ucenter/service/impl/UserPlatformServiceImpl.java

package com.fdkankan.ucenter.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.fdkankan.ucenter.entity.UserPlatform;
import com.fdkankan.ucenter.mapper.IUserPlatformMapper;
import com.fdkankan.ucenter.service.IUserPlatformService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 
 * @since 2024-11-19
 */
@Service
public class UserPlatformServiceImpl extends ServiceImpl<IUserPlatformMapper, UserPlatform> implements IUserPlatformService {

    @Override
    public List<String> getByUserId(Long id) {
        LambdaQueryWrapper<UserPlatform> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(UserPlatform::getUserId,id);
        List<UserPlatform> list = this.list(wrapper);
        if(list.isEmpty()){
            return new ArrayList<>();
        }
        return list.stream().map(UserPlatform::getPlatformKey).collect(Collectors.toList());
    }
}