有注释的测评系统业务代码

linzhijie

2021-03-11 93af1c6ffb9ae0e894689ad3a37b548e57d54cff

 src/main/java/com/ots/project/exam/service/impl/SubjectServiceImpl.java

@@ -1,4 +1,5 @@
package com.ots.project.exam.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.ots.project.exam.domain.Subject;
@@ -9,43 +10,54 @@
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.List;

@Service("examSubject")
public class SubjectServiceImpl extends BaseServiceImpl<Subject> implements SubjectService {

    private final static String CACHE_NAME = "Subject";
    @Autowired
    private SubjectMapper subjectMapper;

    @Autowired
    public SubjectServiceImpl(SubjectMapper subjectMapper) {
        super(subjectMapper);
        this.subjectMapper = subjectMapper;
    }

    @Override
    @Cacheable(value = CACHE_NAME, key = "#id", unless = "#result == null")
    public Subject selectById(Integer id) {
        return super.selectById(id);
    }

    @Override
    @CacheEvict(value = CACHE_NAME, key = "#record.id")
    public int updateByIdFilter(Subject record) {
        return super.updateByIdFilter(record);
    }

    @Override
    public List<Subject> getSubjectByLevel(Integer level) {
        return subjectMapper.getSubjectByLevel(level);
    }

    @Override
    public List<Subject> allSubject() {
        return subjectMapper.allSubject();
    }

    @Override
    public Integer levelBySubjectId(Integer id) {
        return this.selectById(id).getLevel();
    }

    @Override
    public PageInfo<Subject> page(SubjectPageRequestVM requestVM) {
        return PageHelper.startPage(requestVM.getPageIndex(), requestVM.getPageSize(), "id desc").doSelectPageInfo(() ->
                subjectMapper.page(requestVM)
        );
    }

}