package com.moral.api.service.impl;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import com.moral.api.entity.SysArea;
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import com.moral.api.mapper.SysAreaMapper;
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import com.moral.api.service.SysAreaService;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.stereotype.Service;
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import org.springframework.util.ObjectUtils;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.Predicate;
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/**
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* <p>
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* 系统区域表 服务实现类
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* </p>
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*
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* @author moral
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* @since 2021-04-07
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*/
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@Service
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public class SysAreaServiceImpl extends ServiceImpl<SysAreaMapper, SysArea> implements SysAreaService {
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@Autowired
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SysAreaMapper sysAreaMapper;
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@Autowired
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RedisTemplate redisTemplate;
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@Override
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public List<SysArea> querySysArea() {
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List<SysArea> sysAreas = redisTemplate.opsForList().range("sysArea", 0, -1);
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if (ObjectUtils.isEmpty(sysAreas)) {
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sysAreas = querySysAreaFromDB();
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}
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return sysAreas;
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}
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private List<SysArea> querySysAreaFromDB() {
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//取出所有地区
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List<SysArea> sysAreas = sysAreaMapper.selectList(null);
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//创建Map key为地区码 value为地区对象 供组装使用
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Map<Integer, SysArea> areaMap = new HashMap<>();
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for (SysArea sysArea : sysAreas) {
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areaMap.put(sysArea.getAreaCode(), sysArea);
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sysArea.setChildren(new ArrayList<>());//初始化children集合
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}
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//遍历所有城市，判断是否有父城市，如果有则添加到父城市中。
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for (SysArea sysArea : sysAreas) {
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Integer parentCode = sysArea.getParentCode();
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if (!parentCode.equals(0)) {
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SysArea parentArea = areaMap.get(parentCode);
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parentArea.getChildren().add(sysArea);
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}
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}
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//移除集合中非父顶级城市
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sysAreas.removeIf(new Predicate<SysArea>() {
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@Override
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public boolean test(SysArea sysArea) {
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if (sysArea.getParentCode().equals(0))
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return false;
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return true;
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}
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});
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//存入缓存
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redisTemplate.opsForList().rightPushAll("sysArea",sysAreas);
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return sysAreas;
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}
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}
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