Package org.apache.lucene.store

Examples of org.apache.lucene.store.Directory$IndexInputSlicer


   */
  private boolean existIndex()
  throws IOException {
    try {
      File indexFile = new File(indexPath);
      Directory directory = FSDirectory.open(indexFile);
      return IndexReader.indexExists(directory);
    } catch (IOException e) {
      throw e;
    }
  }
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   * @return true : Index exists.
   */
  public boolean existIndex() {
    try {
      File indexFile = new File(indexPath);
      Directory directory = FSDirectory.open(indexFile);
      return IndexReader.indexExists(directory);
    } catch (IOException e) {
      log.error("", e);
      return false;
    }
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   * @return  Creation date of current used search index.
   */
  public Date getCreationDate() {
    try {
      File indexFile = new File(indexPath);
      Directory directory = FSDirectory.open(indexFile);
      return new Date(IndexReader.getCurrentVersion(directory));
    } catch (IOException e) {
      return null;
    }
  }
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   * @throws InterruptedException
   */
  private void doIndex() throws InterruptedException{
    try {
      File tempIndexDir = new File(tempIndexPath);
      Directory indexPath = FSDirectory.open(new File(tempIndexDir, "main"));
      Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);
      indexWriter = new IndexWriter(indexPath, analyzer, true, IndexWriter.MaxFieldLength.UNLIMITED);
      indexWriter.deleteAll();
      indexWriter.setMergeFactor(INDEX_MERGE_FACTOR); //for better performance
      // Create IndexWriterWorker
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  public IndexWriterWorker(int id, File tempIndexDir, OlatFullIndexer fullIndexer) {
    this.id = id;
    this.fullIndexer = fullIndexer;
    try {
      File indexPartFile = new File(tempIndexDir, "part" + id);
      Directory indexPartDirectory = FSDirectory.open(indexPartFile);
      indexWriter = new IndexWriter(indexPartDirectory, new StandardAnalyzer(Version.LUCENE_CURRENT), true, IndexWriter.MaxFieldLength.UNLIMITED);
      indexWriter.deleteAll();
    } catch (IOException e) {
      log.warn("Can not create IndexWriter");
    }
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  /**
   * @param args
   */
  public static void main(String[] args) {

    Directory ramDir = new RAMDirectory();
    try {
      IndexWriter writer = new IndexWriter(ramDir, /*new StandardAnalyzer()/*/XFactory.getWriterAnalyzer());
      Document doc = new Document();
      Field fd = new Field(FIELD_NAME, CONTENT, Field.Store.YES, Field.Index.TOKENIZED,Field.TermVector.WITH_POSITIONS_OFFSETS);
      doc.add(fd);
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    //读取本类目录下的text.txt文件
    String content = ContentReader.readText(Chinese.class);

    //接下来是标准的Lucene建立索引和检索的代码
    Directory ramDir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(ramDir, analyzer, MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    Field fd = new Field(FIELD_NAME, content, Field.Store.YES,
        Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
    doc.add(fd);
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    //读取本类目录下的text.txt文件
    String content = ContentReader.readText(English.class);

    //接下来是标准的Lucene建立索引和检索的代码
    Directory ramDir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(ramDir, analyzer, MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    Field fd = new Field(FIELD_NAME, content, Field.Store.YES,
        Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
    doc.add(fd);
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    //实例化IKAnalyzer分词器
    Analyzer analyzer = new IKAnalyzer();
  
   
    Directory directory = null;
    IndexWriter iwriter = null;
    IndexSearcher isearcher = null;
    try {
      //建立内存索引对象
      directory = new RAMDirectory();  
      iwriter = new IndexWriter(directory, analyzer, true , IndexWriter.MaxFieldLength.LIMITED);
      Document doc = new Document();
      doc.add(new Field("ID", "10000", Field.Store.YES, Field.Index.NOT_ANALYZED));
      doc.add(new Field(fieldName, text, Field.Store.YES, Field.Index.ANALYZED));
      iwriter.addDocument(doc);
      iwriter.close();
     
        //实例化搜索器  
      isearcher = new IndexSearcher(directory);     
      //在索引器中使用IKSimilarity相似度评估器
      isearcher.setSimilarity(new IKSimilarity());
     
      String keyword = "中文分词工具包";
     
      //使用IKQueryParser查询分析器构造Query对象
      Query query = IKQueryParser.parse(fieldName, keyword);
     
      //搜索相似度最高的5条记录
      TopDocs topDocs = isearcher.search(query , 5);
      System.out.println("命中:" + topDocs.totalHits);
      //输出结果
      ScoreDoc[] scoreDocs = topDocs.scoreDocs;
      for (int i = 0; i < topDocs.totalHits; i++){
        Document targetDoc = isearcher.doc(scoreDocs[i].doc);
        System.out.println("内容:" + targetDoc.toString());
      }     
     
    } catch (CorruptIndexException e) {
      e.printStackTrace();
    } catch (LockObtainFailedException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    } finally{
      if(isearcher != null){
        try {
          isearcher.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      if(directory != null){
        try {
          directory.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }
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    //读取本类目录下的text.txt文件
    String content = ContentReader.readText(Chinese.class);

    //接下来是标准的Lucene建立索引和检索的代码
    Directory ramDir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(ramDir, analyzer, MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    Field fd = new Field(FIELD_NAME, content, Field.Store.YES,
        Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
    doc.add(fd);
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