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EricsHu

2023-09-01 19e6057d3797b6fd6770ed5a98ddaef0b86a4c47

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package com.qxueyou.scc.exam.dao;
 
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
 
import com.qxueyou.scc.base.dao.BaseDAO;
import com.qxueyou.scc.base.service.ICacheService;
 
@Repository
public class ExamPaperSectionDAO extends BaseDAO{
    
    @Autowired
    ICacheService cacheService;
    
    public void deleteItem(String sectionId,List<String> exerciseIds) {
        for(String exerciseId:exerciseIds) {
            cacheService.lstRemove(getKey(sectionId), exerciseId);
        }
    }
    
    public void deleteSectionCache(String sectionId) {
        cacheService.delete(getKey(sectionId));
    }
 
    private String getKey(String sectionId) {
        return "lst_section_exerciseIds_"+sectionId;
    }
    
    public void addItem(String sectionId,List<String> exerciseIds) {
        for(String exerciseId:exerciseIds) {
            cacheService.lstRightPush(getKey(sectionId), exerciseId);
        }
    }
    
    public void addItem(String sectionId,String exerciseId) {
        cacheService.lstRightPush(getKey(sectionId), exerciseId);
    }
    
    @SuppressWarnings("unchecked")
    public List<String> getItems(String sectionId) {
        
        List<Object> ids = cacheService.lstAll(getKey(sectionId));
        
        if(ids==null) {
            return Collections.EMPTY_LIST;
        }
        
        List<String> result = new ArrayList<String>(ids.size());
        
        for(Object id:ids) {
            result.add((String)id);
        }
        return result;
    }
}