content: package com.ruoyi.system.service.impl;
  
  import java.util.List;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import com.ruoyi.common.constant.UserConstants;
  import com.ruoyi.common.exception.BusinessException;
  import com.ruoyi.common.support.Convert;
  import com.ruoyi.common.utils.StringUtils;
  import com.ruoyi.system.domain.SysDictType;
  import com.ruoyi.system.mapper.SysDictDataMapper;
  import com.ruoyi.system.mapper.SysDictTypeMapper;
  import com.ruoyi.system.service.ISysDictTypeService;
  
  /**
   * 字典 业务层处理
   * 
   * @author ruoyi
   */
  @Service
  public class SysDictTypeServiceImpl implements ISysDictTypeService
  {
      @Autowired
      private SysDictTypeMapper dictTypeMapper;
  
      @Autowired
      private SysDictDataMapper dictDataMapper;
  
      /**
       * 根据条件分页查询字典类型
       * 
       * @param dictType 字典类型信息
       * @return 字典类型集合信息
       */
      @Override
      public List<SysDictType> selectDictTypeList(SysDictType dictType)
      {
          return dictTypeMapper.selectDictTypeList(dictType);
      }
  
      /**
       * 根据所有字典类型
       * 
       * @return 字典类型集合信息
       */
      @Override
      public List<SysDictType> selectDictTypeAll()
      {
          return dictTypeMapper.selectDictTypeAll();
      }
  
      /**
       * 根据字典类型ID查询信息
       * 
       * @param dictId 字典类型ID
       * @return 字典类型
       */
      @Override
      public SysDictType selectDictTypeById(Long dictId)
      {
          return dictTypeMapper.selectDictTypeById(dictId);
      }
  
      /**
       * 通过字典ID删除字典信息
       * 
       * @param dictId 字典ID
       * @return 结果
       */
      @Override
      public int deleteDictTypeById(Long dictId)
      {
          return dictTypeMapper.deleteDictTypeById(dictId);
      }
  
      /**
       * 批量删除字典类型
       * 
       * @param ids 需要删除的数据
       * @return 结果
       */
      @Override
      public int deleteDictTypeByIds(String ids) throws BusinessException
      {
          Long[] dictIds = Convert.toLongArray(ids);
          for (Long dictId : dictIds)
          {
              SysDictType dictType = selectDictTypeById(dictId);
              if (dictDataMapper.countDictDataByType(dictType.getDictType()) > 0)
              {
                  throw new BusinessException(String.format("%1$s已分配,不能删除", dictType.getDictName()));
              }
          }
  
          return dictTypeMapper.deleteDictTypeByIds(dictIds);
      }
  
      /**
       * 新增保存字典类型信息
       * 
       * @param dictType 字典类型信息
       * @return 结果
       */
      @Override
      public int insertDictType(SysDictType dictType)
      {
          return dictTypeMapper.insertDictType(dictType);
      }
  
      /**
       * 修改保存字典类型信息
       * 
       * @param dictType 字典类型信息
       * @return 结果
       */
      @Override
      public int updateDictType(SysDictType dictType)
      {
          SysDictType oldDict = dictTypeMapper.selectDictTypeById(dictType.getDictId());
          dictDataMapper.updateDictDataType(oldDict.getDictType(), dictType.getDictType());
          return dictTypeMapper.updateDictType(dictType);
      }
  
      /**
       * 校验字典类型称是否唯一
       * 
       * @param dict 字典类型
       * @return 结果
       */
      @Override
      public String checkDictTypeUnique(SysDictType dict)
      {
          Long dictId = StringUtils.isNull(dict.getDictId()) ? -1L : dict.getDictId();
          SysDictType dictType = dictTypeMapper.checkDictTypeUnique(dict.getDictType());
          if (StringUtils.isNotNull(dictType) && dictType.getDictId().longValue() != dictId.longValue())
          {
              return UserConstants.DICT_TYPE_NOT_UNIQUE;
          }
          return UserConstants.DICT_TYPE_UNIQUE;
      }
  }
  