package com.ruoyi.system.service.impl;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.ruoyi.common.constant.CacheConstants;
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import com.ruoyi.common.constant.ResultConstants;
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import com.ruoyi.common.core.domain.AjaxResult;
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import com.ruoyi.common.core.domain.entity.SysDictData;
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import com.ruoyi.common.core.redis.RedisCache;
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import com.ruoyi.common.exception.BusinessException;
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import com.ruoyi.common.utils.DictUtils;
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import com.ruoyi.common.utils.spring.SpringUtils;
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import com.ruoyi.system.domain.resp.DistrictTreeRespDTO;
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import com.ruoyi.system.mapper.SysDistrictMapper;
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import com.ruoyi.system.domain.SysDistrict;
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import com.ruoyi.system.service.SysDistrictService;
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import org.springframework.beans.BeanUtils;
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import org.springframework.stereotype.Service;
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import org.springframework.util.CollectionUtils;
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import javax.annotation.PostConstruct;
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import java.util.*;
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import java.util.stream.Collectors;
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import static com.ruoyi.common.utils.DictUtils.clearDictCache;
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/**
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* @author hz
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* @since 2023-09-07 13:13:58
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*/
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@Service("sysDistrictService")
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public class SysDistrictServiceImpl extends ServiceImpl<SysDistrictMapper, SysDistrict> implements SysDistrictService {
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@PostConstruct
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public void init()
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{
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loadingDistrictCache();
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}
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@Override
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public List<SysDistrict> selectAll() {
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if (SpringUtils.getBean(RedisCache.class).hasKey(CacheConstants.SYS_DISTRICT_LIST_KEY)){
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List<SysDistrict> sysDistricts = SpringUtils.getBean(RedisCache.class).getCacheObject(CacheConstants.SYS_DISTRICT_LIST_KEY);
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return sysDistricts;
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}
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List<SysDistrict> list = this.list();
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SpringUtils.getBean(RedisCache.class).setCacheObject(CacheConstants.SYS_DISTRICT_LIST_KEY, list);
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return list;
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}
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@Override
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public void loadingDistrictCache()
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{
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List<SysDistrict> list = this.list();
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if (!CollectionUtils.isEmpty(list)) {
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SpringUtils.getBean(RedisCache.class).setCacheObject(CacheConstants.SYS_DISTRICT_LIST_KEY, list);
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}
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List<DistrictTreeRespDTO> treeRespDTOS = this.selectAllByTree();
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if (!CollectionUtils.isEmpty(treeRespDTOS)) {
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SpringUtils.getBean(RedisCache.class).setCacheObject(CacheConstants.SYS_DISTRICT_TREE_KEY, list);
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}
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}
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@Override
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public void clearDistrictCache()
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{
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if (SpringUtils.getBean(RedisCache.class).hasKey(CacheConstants.SYS_DISTRICT_LIST_KEY)){
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SpringUtils.getBean(RedisCache.class).deleteObject(CacheConstants.SYS_DISTRICT_LIST_KEY);
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}
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if (SpringUtils.getBean(RedisCache.class).hasKey(CacheConstants.SYS_DISTRICT_TREE_KEY)){
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SpringUtils.getBean(RedisCache.class).deleteObject(CacheConstants.SYS_DISTRICT_TREE_KEY);
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}
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}
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/**
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* 重置区划缓存数据
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*/
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@Override
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public void resetDistrictCache()
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{
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clearDistrictCache();
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loadingDistrictCache();
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}
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@Override
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public List<DistrictTreeRespDTO> selectAllByTree() {
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if (SpringUtils.getBean(RedisCache.class).hasKey(CacheConstants.SYS_DISTRICT_TREE_KEY)){
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List<DistrictTreeRespDTO> sysDistrictTree = SpringUtils.getBean(RedisCache.class).getCacheObject(CacheConstants.SYS_DISTRICT_TREE_KEY);
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return sysDistrictTree;
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}
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List<SysDistrict> districts = this.selectAll();
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if (CollectionUtils.isEmpty(districts)){
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throw new BusinessException(this.getClass(), ResultConstants.SYSTEM_ERROR_DATABASE_FAIL,"区划信息获取失败");
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}
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//获取父节点，0表示父节点，让此次递归有个开头
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List<DistrictTreeRespDTO> collect = districts.stream()
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//父节点的id = 0，根据它开始进行实现。
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.filter(e -> e.getParentcode().equals("0"))
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.map(e ->{
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DistrictTreeRespDTO dto = new DistrictTreeRespDTO();
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BeanUtils.copyProperties(e,dto);
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//将过滤之后的数据来进行方法调用，拿到他的所有的子节点信息并进行封装
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dto.setChildren(getchildrens(dto, districts));
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return dto;
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}).collect(Collectors.toList());
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SpringUtils.getBean(RedisCache.class).setCacheObject(CacheConstants.SYS_DISTRICT_TREE_KEY, collect);
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return collect;
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}
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private List<DistrictTreeRespDTO> getchildrens(DistrictTreeRespDTO root,List<SysDistrict> districts){
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//root为每次最新的传递过来的数据，也就是上面过滤之后的 e ；
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List<DistrictTreeRespDTO> collect = districts.stream()
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//根据传递过来的 e ,拿到他的id，来查询出他的子节点id 这里有个特点 e.id = 子节点的父节点id
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.filter(e -> Objects.equals(e.getParentcode(), root.getCode()))
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.map(e -> {
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DistrictTreeRespDTO dto = new DistrictTreeRespDTO();
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BeanUtils.copyProperties(e,dto);
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dto.setChildren(getchildrens(dto, districts));
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//递归找到他的子节点，直到找到最后一个子节点为止，饼进行封装。
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return dto;
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}).collect(Collectors.toList());
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return collect;
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}
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}
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