4dkankan-center-modeling-control/src/main/java/com/fdkankan/contro/service/impl/CameraDetailServiceImpl.java

package com.fdkankan.contro.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fdkankan.common.constant.ErrorCode;
import com.fdkankan.common.constant.TbStatus;
import com.fdkankan.common.exception.BusinessException;
import com.fdkankan.contro.entity.CameraDetail;
import com.fdkankan.contro.mapper.ICameraDetailMapper;
import com.fdkankan.contro.service.ICameraDetailService;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;

/**
 * <p>
 * 相机子表 服务实现类
 * </p>
 *
 * @author 
 * @since 2021-12-24
 */
@Service
public class CameraDetailServiceImpl extends ServiceImpl<ICameraDetailMapper, CameraDetail> implements ICameraDetailService {

    @Override
    public CameraDetail getByCameraId(Long cameraId) {
        return this.getOne(new LambdaQueryWrapper<CameraDetail>().eq(CameraDetail::getCameraId, cameraId));
    }


    @Override
    public CameraDetail updateCameraDetailByCameraIdAndSpace(Long cameraId, Long space) {
        CameraDetail cameraDetail = this.getByCameraId(cameraId);
        if(Objects.isNull(cameraDetail)){
            return null;
        }
        this.update(new LambdaUpdateWrapper<CameraDetail>()
                .setSql("used_space = used_space + " + space)
                .eq(CameraDetail::getId, cameraDetail.getId()));

        return this.getByCameraId(cameraId);
    }

}