EAI-Backend/src/main/java/com/njuzr/eaibackend/mapper/EvaluationMapperServiceImpl.java

package com.njuzr.eaibackend.mapper;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.njuzr.eaibackend.po.Evaluation;
import org.springframework.stereotype.Service;

@Service
public class EvaluationMapperServiceImpl extends ServiceImpl<EvaluationMapper, Evaluation> {

    public Evaluation getByVersion(Long assignmentId, Long userId, Integer version) {
        return this.lambdaQuery()
                .eq(Evaluation::getAssignmentId, assignmentId)
                .eq(Evaluation::getStudentId, userId)
                .eq(Evaluation::getVersion, version)
                .one();
    }

    public boolean deleteByVersion(Long assignmentId, Long studentId, Integer version) {
    return this.lambdaUpdate()
            .eq(Evaluation::getAssignmentId, assignmentId)
            .eq(Evaluation::getStudentId, studentId)
            .eq(Evaluation::getVersion, version)
            .remove();
}
}