content: 
  package com.platform.modules.system.repository;
  
  import com.platform.modules.system.domain.Dept;
  import org.springframework.data.jpa.repository.JpaRepository;
  import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
  import org.springframework.data.jpa.repository.Modifying;
  import org.springframework.data.jpa.repository.Query;
  import java.util.List;
  import java.util.Set;
  
  /**
  * @author AllDataDC
  * @date 2023-01-27
  */
  public interface DeptRepository extends JpaRepository<Dept, Long>, JpaSpecificationExecutor<Dept> {
  
      /**
       * 根据 PID 查询
       * @param id pid
       * @return /
       */
      List<Dept> findByPid(Long id);
  
      /**
       * 获取顶级部门
       * @return /
       */
      List<Dept> findByPidIsNull();
  
      /**
       * 根据角色ID 查询
       * @param roleId 角色ID
       * @return /
       */
      @Query(value = "select d.* from sys_dept d, sys_roles_depts r where " +
              "d.dept_id = r.dept_id and r.role_id = ?1", nativeQuery = true)
      Set<Dept> findByRoleId(Long roleId);
  
      /**
       * 判断是否存在子节点
       * @param pid /
       * @return /
       */
      int countByPid(Long pid);
  
      /**
       * 根据ID更新sub_count
       * @param count /
       * @param id /
       */
      @Modifying
      @Query(value = " update sys_dept set sub_count = ?1 where dept_id = ?2 ",nativeQuery = true)
      void updateSubCntById(Integer count, Long id);
  }