InfraStudentServiceImpl
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package cn.iocoder.yudao.module.infra.service.demo;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import org.springframework.validation.annotation.Validated;
import org.springframework.transaction.annotation.Transactional;
import java.util.*;
import cn.iocoder.yudao.module.infra.controller.admin.demo.vo.*;
import cn.iocoder.yudao.module.infra.dal.dataobject.demo.InfraStudentDO;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.pojo.PageParam;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.infra.dal.mysql.demo.InfraStudentMapper;
import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.module.infra.enums.ErrorCodeConstants.*;
/**
* 学生 Service 实现类
*
* @author 芋道源码
*/
@Service
@Validated
public class InfraStudentServiceImpl implements InfraStudentService {
@Resource
private InfraStudentMapper studentMapper;
@Override
public Long createStudent(InfraStudentSaveReqVO createReqVO) {
// 插入
InfraStudentDO student = BeanUtils.toBean(createReqVO, InfraStudentDO.class);
studentMapper.insert(student);
// 返回
return student.getId();
}
@Override
public void updateStudent(InfraStudentSaveReqVO updateReqVO) {
// 校验存在
validateStudentExists(updateReqVO.getId());
// 更新
InfraStudentDO updateObj = BeanUtils.toBean(updateReqVO, InfraStudentDO.class);
studentMapper.updateById(updateObj);
}
@Override
public void deleteStudent(Long id) {
// 校验存在
validateStudentExists(id);
// 删除
studentMapper.deleteById(id);
}
private void validateStudentExists(Long id) {
if (studentMapper.selectById(id) == null) {
throw exception(STUDENT_NOT_EXISTS);
}
}
@Override
public InfraStudentDO getStudent(Long id) {
return studentMapper.selectById(id);
}
@Override
public PageResult<InfraStudentDO> getStudentPage(InfraStudentPageReqVO pageReqVO) {
return studentMapper.selectPage(pageReqVO);
}
}