package com.iailab.module.system.service.dept;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.util.ObjectUtil;
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import com.iailab.framework.common.enums.CommonStatusEnum;
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import com.iailab.framework.common.util.object.BeanUtils;
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import com.iailab.framework.datapermission.core.annotation.DataPermission;
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import com.iailab.module.system.controller.admin.dept.vo.dept.DeptListReqVO;
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import com.iailab.module.system.controller.admin.dept.vo.dept.DeptSaveReqVO;
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import com.iailab.module.system.dal.dataobject.dept.DeptDO;
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import com.iailab.module.system.dal.mysql.dept.DeptMapper;
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import com.iailab.module.system.dal.redis.RedisKeyConstants;
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import com.google.common.annotations.VisibleForTesting;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.cache.annotation.CacheEvict;
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import org.springframework.cache.annotation.Cacheable;
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import org.springframework.stereotype.Service;
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import org.springframework.validation.annotation.Validated;
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import javax.annotation.Resource;
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import java.util.*;
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import static com.iailab.framework.common.exception.util.ServiceExceptionUtil.exception;
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import static com.iailab.framework.common.util.collection.CollectionUtils.convertSet;
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import static com.iailab.module.system.enums.ErrorCodeConstants.*;
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/**
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* 部门 Service 实现类
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*
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* @author iailab
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*/
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@Service
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@Validated
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@Slf4j
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public class DeptServiceImpl implements DeptService {
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@Resource
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private DeptMapper deptMapper;
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@Override
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@CacheEvict(cacheNames = RedisKeyConstants.DEPT_CHILDREN_ID_LIST,
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allEntries = true) // allEntries 清空所有缓存,因为操作一个部门,涉及到多个缓存
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public Long createDept(DeptSaveReqVO createReqVO) {
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if (createReqVO.getParentId() == null) {
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createReqVO.setParentId(DeptDO.PARENT_ID_ROOT);
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}
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// 校验父部门的有效性
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validateParentDept(null, createReqVO.getParentId());
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// 校验部门名的唯一性
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validateDeptNameUnique(null, createReqVO.getParentId(), createReqVO.getName());
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// 插入部门
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DeptDO dept = BeanUtils.toBean(createReqVO, DeptDO.class);
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deptMapper.insert(dept);
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return dept.getId();
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}
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@Override
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@CacheEvict(cacheNames = RedisKeyConstants.DEPT_CHILDREN_ID_LIST,
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allEntries = true) // allEntries 清空所有缓存,因为操作一个部门,涉及到多个缓存
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public void updateDept(DeptSaveReqVO updateReqVO) {
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if (updateReqVO.getParentId() == null) {
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updateReqVO.setParentId(DeptDO.PARENT_ID_ROOT);
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}
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// 校验自己存在
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validateDeptExists(updateReqVO.getId());
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// 校验父部门的有效性
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validateParentDept(updateReqVO.getId(), updateReqVO.getParentId());
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// 校验部门名的唯一性
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validateDeptNameUnique(updateReqVO.getId(), updateReqVO.getParentId(), updateReqVO.getName());
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// 更新部门
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DeptDO updateObj = BeanUtils.toBean(updateReqVO, DeptDO.class);
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deptMapper.updateById(updateObj);
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}
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@Override
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@CacheEvict(cacheNames = RedisKeyConstants.DEPT_CHILDREN_ID_LIST,
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allEntries = true) // allEntries 清空所有缓存,因为操作一个部门,涉及到多个缓存
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public void deleteDept(Long id) {
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// 校验是否存在
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validateDeptExists(id);
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// 校验是否有子部门
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if (deptMapper.selectCountByParentId(id) > 0) {
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throw exception(DEPT_EXITS_CHILDREN);
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}
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// 删除部门
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deptMapper.deleteById(id);
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}
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@VisibleForTesting
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void validateDeptExists(Long id) {
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if (id == null) {
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return;
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}
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DeptDO dept = deptMapper.selectById(id);
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if (dept == null) {
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throw exception(DEPT_NOT_FOUND);
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}
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}
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@VisibleForTesting
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void validateParentDept(Long id, Long parentId) {
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if (parentId == null || DeptDO.PARENT_ID_ROOT.equals(parentId)) {
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return;
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}
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// 1. 不能设置自己为父部门
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if (Objects.equals(id, parentId)) {
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throw exception(DEPT_PARENT_ERROR);
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}
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// 2. 父部门不存在
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DeptDO parentDept = deptMapper.selectById(parentId);
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if (parentDept == null) {
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throw exception(DEPT_PARENT_NOT_EXITS);
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}
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// 3. 递归校验父部门,如果父部门是自己的子部门,则报错,避免形成环路
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if (id == null) { // id 为空,说明新增,不需要考虑环路
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return;
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}
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for (int i = 0; i < Short.MAX_VALUE; i++) {
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// 3.1 校验环路
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parentId = parentDept.getParentId();
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if (Objects.equals(id, parentId)) {
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throw exception(DEPT_PARENT_IS_CHILD);
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}
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// 3.2 继续递归下一级父部门
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if (parentId == null || DeptDO.PARENT_ID_ROOT.equals(parentId)) {
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break;
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}
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parentDept = deptMapper.selectById(parentId);
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if (parentDept == null) {
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break;
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}
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}
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}
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@VisibleForTesting
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void validateDeptNameUnique(Long id, Long parentId, String name) {
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DeptDO dept = deptMapper.selectByParentIdAndName(parentId, name);
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if (dept == null) {
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return;
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}
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// 如果 id 为空,说明不用比较是否为相同 id 的部门
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if (id == null) {
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throw exception(DEPT_NAME_DUPLICATE);
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}
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if (ObjectUtil.notEqual(dept.getId(), id)) {
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throw exception(DEPT_NAME_DUPLICATE);
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}
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}
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@Override
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public DeptDO getDept(Long id) {
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return deptMapper.selectById(id);
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}
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@Override
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public List<DeptDO> getDeptList(Collection<Long> ids) {
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if (CollUtil.isEmpty(ids)) {
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return Collections.emptyList();
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}
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return deptMapper.selectBatchIds(ids);
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}
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@Override
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public List<DeptDO> getDeptList(DeptListReqVO reqVO) {
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List<DeptDO> list = deptMapper.selectList(reqVO);
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list.sort(Comparator.comparing(DeptDO::getSort));
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return list;
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}
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@Override
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public List<DeptDO> getChildDeptList(Long id) {
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List<DeptDO> children = new LinkedList<>();
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// 遍历每一层
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Collection<Long> parentIds = Collections.singleton(id);
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for (int i = 0; i < Short.MAX_VALUE; i++) { // 使用 Short.MAX_VALUE 避免 bug 场景下,存在死循环
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// 查询当前层,所有的子部门
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List<DeptDO> depts = deptMapper.selectListByParentId(parentIds);
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// 1. 如果没有子部门,则结束遍历
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if (CollUtil.isEmpty(depts)) {
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break;
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}
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// 2. 如果有子部门,继续遍历
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children.addAll(depts);
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parentIds = convertSet(depts, DeptDO::getId);
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}
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return children;
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}
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@Override
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@DataPermission(enable = false) // 禁用数据权限,避免建立不正确的缓存
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@Cacheable(cacheNames = RedisKeyConstants.DEPT_CHILDREN_ID_LIST, key = "#id")
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public Set<Long> getChildDeptIdListFromCache(Long id) {
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List<DeptDO> children = getChildDeptList(id);
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return convertSet(children, DeptDO::getId);
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}
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@Override
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public void validateDeptList(Collection<Long> ids) {
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if (CollUtil.isEmpty(ids)) {
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return;
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}
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// 获得科室信息
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Map<Long, DeptDO> deptMap = getDeptMap(ids);
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// 校验
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ids.forEach(id -> {
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DeptDO dept = deptMap.get(id);
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if (dept == null) {
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throw exception(DEPT_NOT_FOUND);
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}
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if (!CommonStatusEnum.ENABLE.getStatus().equals(dept.getStatus())) {
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throw exception(DEPT_NOT_ENABLE, dept.getName());
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}
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});
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}
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}
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