content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.langengine.docloader.easyexcel;
  
  import com.alibaba.excel.EasyExcel;
  import com.alibaba.excel.read.listener.PageReadListener;
  import com.alibaba.fastjson.JSON;
  import com.alibaba.langengine.core.docloader.BaseLoader;
  import com.alibaba.langengine.core.indexes.Document;
  import lombok.Data;
  import lombok.extern.slf4j.Slf4j;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  
  /**
   * easyexcel docloader old
   *
   * @author xiaoxuan.lp
   */
  @Slf4j
  @Data
  public class EasyExcelOldDocLoader<T> extends BaseLoader {
  
      private String filePath;
  
      private Class<T> tClass;
  
      public EasyExcelOldDocLoader(String filePath, Class<T> tClass) {
          setFilePath(filePath);
          setTClass(tClass);
      }
  
      @Override
      public List<Document> load() {
          List<Document> documents = new ArrayList<>();
          EasyExcel.read(filePath, tClass, new PageReadListener<T>(dataList -> {
              for (T tdata : dataList) {
                  Document document = new Document();
                  String content = JSON.toJSONString(tdata);
                  document.setPageContent(content);
                  document.setMetadata(new HashMap<>());
                  document.getMetadata().put("data", tdata);
                  documents.add(document);
              }
          })).sheet().doRead();
          return documents;
      }
  }
  