yhjd/src/main/java/com/gszc/service/impl/QuestionServiceImpl.java

package com.gszc.service.impl;

import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.plugins.Page;
import com.gszc.entity.Question;
import com.gszc.entity.Question;
import com.gszc.mapper.QuestionMapper;
import com.gszc.service.IQuestionService;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;
import java.util.UUID;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author ky
 * @since 2020-05-25
 */
@Service
public class QuestionServiceImpl extends ServiceImpl<QuestionMapper, Question> implements IQuestionService {

    @Autowired
    QuestionMapper questionMapper;

    public void addQuestion(Question question){
        String id = UUID.randomUUID().toString();
        question.setId(id);
        question.setCreateDate(new Date());
        question.setModifyDate(new Date());
        questionMapper.insert(question);
    }

    public void deleteQuestion(Question question){
        questionMapper.deleteById(question);
    }

    public void updateQuestion(Question question){
        questionMapper.updateById(question);
    }

    public List<Question> queryQuestion(Integer pageNum, Integer pageSize){

        List<Question> result = questionMapper.selectPage(new Page<>((pageNum - 1) * pageSize, pageSize), new EntityWrapper<Question>().eq("1", "1").orderBy("ix", true));
        return result;
    }
}