content: /**
   * Copyright (C) 2024 AIDC-AI
   * <p>
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.deepsearch.utils;
  
  import com.alibaba.langengine.core.indexes.Document;
  
  import java.util.ArrayList;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  public class VectorStoreUtils {
  
      public static List<Document> deduplicateResults(List<Document> results) {
          Set<String> allTextSet = new HashSet<>();
          List<Document> deduplicatedResults = new ArrayList<>();
  
          for (Document result : results) {
              if (!allTextSet.contains(result.getPageContent())) {
                  allTextSet.add(result.getPageContent());
                  deduplicatedResults.add(result);
              }
          }
          return deduplicatedResults;
      }
  }
  