Examples of org.apache.lucene.index.Term

org.apache.lucene.index.Term
A Term represents a word from text. This is the unit of search. It is composed of two elements, the text of the word, as a string, and the name of the field that the text occurred in. Note that terms may represent more than words from text fields, but also things like dates, email addresses, urls, etc.

  public boolean isAlreadyIndexed(String url) throws RegainException {
    boolean result = false;


    if (mUpdateIndex) {
      // Search the entry for this URL
      Term urlTerm = new Term("url", url);
      Query query = new TermQuery(urlTerm);


      try {
        setIndexMode(SEARCHING_MODE);
        TopScoreDocCollector collector = TopScoreDocCollector.create(2, false);

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    // Check whether there already is an up-to-date entry in the index
    if (mUpdateIndex) {
      boolean removeOldEntry = false;


      // Search the entry for this URL
      Term urlTerm = new Term("url", rawDocument.getUrl());
      Query query = new TermQuery(urlTerm);
      Document doc;
      try {
        setIndexMode(SEARCHING_MODE);
        TopScoreDocCollector collector = TopScoreDocCollector.create(20, false);

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   */
  private int writeTermsSimply(TermEnum termEnum, PrintWriter writer)
          throws IOException {
    int termCount = 0;
    while (termEnum.next()) {
      Term term = termEnum.term();
      writer.println(term.text());
      termCount++;
    }


    return termCount;
  }

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  private int writeTermsSorted(TermEnum termEnum, PrintWriter writer)
          throws IOException {
    // Put all terms in a list for a later sorting
    ArrayList list = new ArrayList();
    while (termEnum.next()) {
      Term term = termEnum.term();
      list.add(term.text());
    }


    String[] asArr = new String[list.size()];
    list.toArray(asArr);

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        if (allGroups != null && allGroups.length > 0) {
          // Create a query that matches any group
          BooleanQuery groupQuery = new BooleanQuery();
          for (int i = 0; i < allGroups.length; i++) {
            // Add as OR
            groupQuery.add(new TermQuery(new Term("groups", allGroups[i])), Occur.SHOULD);
          }


          // Create a main query that contains the group query and the search query
          // combined with AND
          BooleanQuery mainQuery = new BooleanQuery();
          mainQuery.add(mQuery, Occur.MUST);
          mainQuery.add(groupQuery, Occur.MUST);


          // Set the main query as query to use
          mQuery = mainQuery;
        }
      }


      // Add the mimetype field search
      if (mimeTypeFieldText != null) {
        BooleanQuery mimetypeFieldQuery = new BooleanQuery();
        mimetypeFieldQuery.add(new TermQuery(new Term("mimetype",
                mimeTypeFieldText.substring(9).replace("\"", ""))),
                Occur.SHOULD);
        BooleanQuery mainQuery = new BooleanQuery();
        if (mQuery != null) {
          mainQuery.add(mQuery, Occur.MUST);

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    BoboIndexReader boboReader = BoboIndexReader.getInstance(reader);
    
    Set<String> fieldNames = boboReader.getFacetNames();
    for (String fieldName : fieldNames)
    {
      TermEnum te = reader.terms(new Term(fieldName,""));
      while(te.next())
      {
        Term t = te.term();
        if (!fieldName.equals(t.field())) break;
        writer.println(t.field()+":"+t.text());
      }
      te.close();
    }
    writer.flush();
    writer.close();

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      if (doc == null) {
        throw new NullPointerException(
            "Can't delete document from the index. Doc is NULL");
      }


      Term t = new Term(DocumentCreator.FIELD_BOOKMARK_ID, doc
          .get(DocumentCreator.FIELD_BOOKMARK_ID));
      writer.deleteDocuments(t);
      logger.debug("Deleted doc = " + doc.get(DocumentCreator.FIELD_BOOKMARK_ID));
      
      String urlHash = doc.get(DocumentCreator.FIELD_URL_MD5);

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        throw new NullPointerException(
            "Can't update document in the index. Doc is missing URL hash. doc:"
                + doc);
      }


      Term t = new Term(DocumentCreator.FIELD_BOOKMARK_ID, doc
          .get(DocumentCreator.FIELD_BOOKMARK_ID));
      writer.updateDocument(t, doc);
      logger.debug("Updated doc = " + doc.get(DocumentCreator.FIELD_BOOKMARK_ID));
    }

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      File directory = searchIndexManager.getIndexDirectory();
      searcher = new IndexSearcher(IndexReader.open(directory));
      Analyzer analyzer = DocumentCreator.createDocumentAnalyzer();
      QueryParser parser = new QueryParser(DocumentCreator.FIELD_TEXT,analyzer);
      
      TermQuery matchUserQuery = new TermQuery(new Term(DocumentCreator.FIELD_USER,username));
      Query inputQuery = parser.parse(query);
      BooleanQuery boolQuery = new BooleanQuery();
      boolQuery.add(matchUserQuery, BooleanClause.Occur.MUST);
      boolQuery.add(inputQuery,BooleanClause.Occur.MUST);

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      writer = new FileWriter(outFile);
      PrintWriter out = new PrintWriter(writer);
      Set<String> fieldNames = getFacetNames();
      for (String fieldName : fieldNames)
      {
        TermEnum te = terms(new Term(fieldName, ""));
        out.write(fieldName + ":\n");
        while (te.next())
        {
          Term term = te.term();
          if (!fieldName.equals(term.field()))
          {
            break;
          }
          out.write(term.text() + "\n");
        }
        out.write("\n\n");
      }
    }
    finally

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