package com.ruoyi.admin.service.impl;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.ruoyi.admin.entity.Region;
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import com.ruoyi.admin.mapper.RegionMapper;
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import com.ruoyi.admin.service.RegionService;
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import com.ruoyi.common.core.constant.RedisConstants;
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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 javax.annotation.Resource;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.Collectors;
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/**
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* <p>
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* 省市区三级联动 服务实现类
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* </p>
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*
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* @author hjl
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* @since 2024-06-12
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*/
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@Service
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public class RegionServiceImpl extends ServiceImpl<RegionMapper, Region> implements RegionService {
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@Resource
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private RedisTemplate<Object, Object> redisTemplate;
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@Override
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public List<Region> addressTree() {
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// redis缓存
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Map<Object, Object> regionList = redisTemplate.opsForHash().entries(RedisConstants.ADDRESS_TREE);
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// 获取所有地区信息 省市区三级
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List<Region> regions = getReginList(regionList);
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// 所有地区
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Map<String, Region> courseTypeMap = regions.stream().
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collect(Collectors.toMap(region -> region.getId().toString()
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, region -> region));
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redisTemplate.opsForHash().putAll(RedisConstants.ADDRESS_TREE, courseTypeMap);
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redisTemplate.expire(RedisConstants.ADDRESS_TREE, 30, TimeUnit.MINUTES);
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// 生成map集合
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Map<Integer, Region> map = regions.stream().collect(Collectors.toMap(Region::getId, region -> region));
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// 存放无限级树
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List<Region> treeData = new ArrayList<>();
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// 遍历地区集合
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regions.forEach(e -> {
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if (e.getParentId() == null || e.getParentId().equals(0)) {
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treeData.add(e);
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} else {
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Region region = map.get(e.getParentId());
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region.getChildren().add(e);
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}
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});
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for (Region region : treeData) {
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List<Region> children = region.getChildren();
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for (Region child : children) {
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child.setChildren(new ArrayList<>());
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}
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}
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return treeData;
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}
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/**
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* 获取redis数据进行封装
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*/
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private List<Region> getReginList(Map<Object, Object> regionMap) {
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List<Region> regions = new ArrayList<>();
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if (!regionMap.isEmpty()) {
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Collection<Object> values = regionMap.values();
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for (Object value : values) {
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regions.add((Region) value);
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}
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} else {
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regions = this.list();
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}
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return regions;
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}
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}
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