content: package com.ruoyi.system.service.impl;
  
  import java.util.ArrayList;
  import java.util.List;
  import javax.annotation.PostConstruct;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  import com.ruoyi.common.constant.UserConstants;
  import com.ruoyi.common.core.domain.Ztree;
  import com.ruoyi.common.core.text.Convert;
  import com.ruoyi.common.exception.BusinessException;
  import com.ruoyi.common.utils.StringUtils;
  import com.ruoyi.system.domain.SysDictData;
  import com.ruoyi.system.domain.SysDictType;
  import com.ruoyi.system.mapper.SysDictDataMapper;
  import com.ruoyi.system.mapper.SysDictTypeMapper;
  import com.ruoyi.system.service.ISysDictTypeService;
  import com.ruoyi.system.utils.DictUtils;
  
  /**
   * 字典 业务层处理
   * 
   * @author ruoyi
   */
  @Service
  public class SysDictTypeServiceImpl implements ISysDictTypeService
  {
      @Autowired
      private SysDictTypeMapper dictTypeMapper;
  
      @Autowired
      private SysDictDataMapper dictDataMapper;
  
      /**
       * 项目启动时，初始化字典到缓存
       */
      @PostConstruct
      public void init()
      {
          List<SysDictType> dictTypeList = dictTypeMapper.selectDictTypeAll();
          for (SysDictType dictType : dictTypeList)
          {
              List<SysDictData> dictDatas = dictDataMapper.selectDictDataByType(dictType.getDictType());
              DictUtils.setDictCache(dictType.getDictType(), dictDatas);
          }
      }
  
      /**
       * 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();
      }
  
      /**
       * 根据字典类型查询字典数据
       * 
       * @param dictType 字典类型
       * @return 字典数据集合信息
       */
      @Override
      public List<SysDictData> selectDictDataByType(String dictType)
      {
          List<SysDictData> dictDatas = DictUtils.getDictCache(dictType);
          if (StringUtils.isNotNull(dictDatas))
          {
              return dictDatas;
          }
          dictDatas = dictDataMapper.selectDictDataByType(dictType);
          if (StringUtils.isNotNull(dictDatas))
          {
              DictUtils.setDictCache(dictType, dictDatas);
              return dictDatas;
          }
          return null;
      }
  
      /**
       * 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);
      }
  
      /**
       * 根据字典类型查询信息
       * 
       * @param dictType 字典类型
       * @return 字典类型
       */
      public SysDictType selectDictTypeByType(String dictType)
      {
          return dictTypeMapper.selectDictTypeByType(dictType);
      }
  
      /**
       * 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)
      {
          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()));
              }
          }
          int count = dictTypeMapper.deleteDictTypeByIds(dictIds);
          if (count > 0)
          {
              DictUtils.clearDictCache();
          }
          return count;
      }
  
      /**
       * 清空缓存数据
       */
      public void clearCache()
      {
          DictUtils.clearDictCache();
      }
  
      /**
       * 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)
      {
          int row = dictTypeMapper.insertDictType(dictType);
          if (row > 0)
          {
              DictUtils.clearDictCache();
          }
          return row;
      }
  
      /**
       * 修改保存字典类型信息
       * 
       * @param dictType 字典类型信息
       * @return 结果
       */
      @Override
      @Transactional
      public int updateDictType(SysDictType dictType)
      {
          SysDictType oldDict = dictTypeMapper.selectDictTypeById(dictType.getDictId());
          dictDataMapper.updateDictDataType(oldDict.getDictType(), dictType.getDictType());
          int row = dictTypeMapper.updateDictType(dictType);
          if (row > 0)
          {
              DictUtils.clearDictCache();
          }
          return row;
      }
  
      /**
       * 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;
      }
  
      /**
       * 查询字典类型树
       * 
       * @param dictType 字典类型
       * @return 所有字典类型
       */
      public List<Ztree> selectDictTree(SysDictType dictType)
      {
          List<Ztree> ztrees = new ArrayList<Ztree>();
          List<SysDictType> dictList = dictTypeMapper.selectDictTypeList(dictType);
          for (SysDictType dict : dictList)
          {
              if (UserConstants.DICT_NORMAL.equals(dict.getStatus()))
              {
                  Ztree ztree = new Ztree();
                  ztree.setId(dict.getDictId());
                  ztree.setName(transDictName(dict));
                  ztree.setTitle(dict.getDictType());
                  ztrees.add(ztree);
              }
          }
          return ztrees;
      }
  
      public String transDictName(SysDictType dictType)
      {
          StringBuffer sb = new StringBuffer();
          sb.append("(" + dictType.getDictName() + ")");
          sb.append("&nbsp;&nbsp;&nbsp;" + dictType.getDictType());
          return sb.toString();
      }
  }
  