package com.yuanchu.mom.service.impl;
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import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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import com.yuanchu.mom.dto.DepartmentDto;
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import com.yuanchu.mom.pojo.Department;
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import com.yuanchu.mom.mapper.DepartmentMapper;
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import com.yuanchu.mom.service.DepartmentService;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import lombok.AllArgsConstructor;
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import lombok.var;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.SQLException;
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import java.sql.Wrapper;
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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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/**
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* <p>
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* 部门明细 服务实现类
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* </p>
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*
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* @author 江苏鵷雏网络科技有限公司
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* @since 2024-04-15 04:01:48
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*/
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@Service
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@AllArgsConstructor
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@Transactional(rollbackFor = Exception.class)
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public class DepartmentServiceImpl extends ServiceImpl<DepartmentMapper, Department> implements DepartmentService {
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DepartmentMapper departmentMapper;
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//添加部门
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@Override
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public int addDepartment(Department department) {
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departmentMapper.insert(department);
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return department.getId();
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}
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//获取部门树
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@Override
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public List<DepartmentDto> selectDepartment() {
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List<Department> departments = departmentMapper.selectDepartment();
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// 假设 resultSet 是从数据库查询返回的结果集
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List<DepartmentDto> departmentDtos = new ArrayList<>();
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Map<Integer, DepartmentDto> departmentMap = new HashMap<>();
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for (Department department : departments) {
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DepartmentDto departmentDto = new DepartmentDto(department.getId(), department.getName(), department.getFatherId(), new ArrayList<DepartmentDto>());
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departmentMap.put(department.getId(), departmentDto);
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if (department.getFatherId() == null) {
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// 根部门
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departmentDtos.add(departmentDto);
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} else {
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// 将当前部门添加到父部门的 children 列表中
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DepartmentDto parent = departmentMap.get(department.getFatherId());
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if (parent != null) {
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parent.getChildren().add(departmentDto);
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}
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}
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}
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return departmentDtos;
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}
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//删除部门
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@Override
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public boolean delDepartment(Integer id) {
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//判断是否有子类,直到没有为止
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List<Department> department = getDepartment(id);
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return removeBatchByIds(department);
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}
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//判断是否有子类,直到没有为止
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public List<Department> getDepartment(Integer id){
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List<Department> list = new ArrayList<>();
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Department depart = baseMapper.selectById(id);
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list.add(depart);
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List<Department> departments = baseMapper.selectList(Wrappers.<Department>lambdaQuery().eq(Department::getFatherId, id));
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if (ObjectUtils.isNotEmpty(departments)){
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list.addAll(departments);
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for (Department department : departments){
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list.addAll(getDepartment(department.getId()));
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}
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}
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return list;
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}
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}
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