Examples of org.apache.lucene.index.Terms

org.apache.lucene.index.Terms
Access to the terms in a specific field. See {@link Fields}. @lucene.experimental

    } else return new BigIntArray(maxDoc);
  }


  protected int getDictValueCount(AtomicReader reader, String field) throws IOException {
    int ret = 0;
    Terms terms = reader.terms(field);
    if (terms == null) {
      return ret;
    }
    return (int) terms.size();
  }

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    return (int) terms.size();
  }


  protected int getNegativeValueCount(AtomicReader reader, String field) throws IOException {
    int ret = 0;
    Terms terms = reader.terms(field);
    if (terms == null) {
      return ret;
    }
    TermsEnum termsEnum = terms.iterator(null);
    BytesRef text;
    while ((text = termsEnum.next()) != null) {
      if (!text.utf8ToString().startsWith("-")) {
        break;
      }

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    list.add(null);
    minIDList.add(-1);
    maxIDList.add(-1);
    freqList.add(0);
    int totalFreq = 0;
    Terms terms = reader.terms(field);
    if (terms != null) {
      TermsEnum termsEnum = terms.iterator(null);
      BytesRef text;
      while ((text = termsEnum.next()) != null) {
        // store term text
        // we expect that there is at most one term per document
        if (t >= length) throw new RuntimeException("there are more terms than "

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    maxIDList.add(-1);
    freqList.add(0);


    _overflow = false;


    Terms terms = reader.terms(field);
    if (terms != null) {
      TermsEnum termsEnum = terms.iterator(null);
      BytesRef text;
      while ((text = termsEnum.next()) != null) {
        String strText = text.utf8ToString();
        list.add(strText);

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    maxIDList.add(-1);
    freqList.add(0);


    _overflow = false;


    Terms terms = reader.terms(field);
    if (terms != null) {
      TermsEnum termsEnum = terms.iterator(null);
      BytesRef text;
      while ((text = termsEnum.next()) != null) {
        String strText = text.utf8ToString();
        list.add(strText);

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    Fields fields = MultiFields.getFields(reader);    
    TermsEnum te = null;
    for (String fld : fields) {
      FieldTermCount ftc = new FieldTermCount();
      ftc.fieldname = fld;
      Terms terms = fields.terms(fld);
      if (terms != null) { // count terms
        te = terms.iterator(te);
        while (te.next() != null) {
          ftc.termCount++;
          numTerms++;
        }
      }

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        LOG.info("Index with no fields - probably empty or corrupted");
        return EMPTY_STATS;
      }
      tiq = new TermStatsQueue(numTerms);
      for (String field : fieldNames) {
        Terms terms = fields.terms(field);
        if (terms != null) {
          te = terms.iterator(te);
          fillQueue(te, tiq, field);
        }
      }
    } else {
      Fields fields = MultiFields.getFields(reader);
      if (fields == null) {
        LOG.info("Index with no fields - probably empty or corrupted");
        return EMPTY_STATS;
      }
      tiq = new TermStatsQueue(numTerms);      
      while (true) {
        String field = fields.iterator().next();
        if (field != null) {
          Terms terms = fields.terms(field);
          te = terms.iterator(te);
          fillQueue(te, tiq, field);
        } else {
          break;
        }
      }

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      if (fields == null) {
        // reader has no fields
        continue;
      }


      final Terms terms = fields.terms(query.field);
      if (terms == null) {
        // field does not exist
        continue;
      }

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  public void testAllDocs() throws Exception {
    this.addDocuments(new String[]{"</computera>", "</computerb>", "</computerc>", "</computerd>"});


    NodeTermRangeQuery query = new NodeTermRangeQuery(DEFAULT_TEST_FIELD, null, null, true, true);
    final Terms terms = MultiFields.getTerms(searcher.getIndexReader(), DEFAULT_TEST_FIELD);
    assertFalse(query.getTermsEnum(terms) instanceof TermRangeTermsEnum);
    assertEquals(4, searcher.search(dq(query), null, 1000).scoreDocs.length);
    query = new NodeTermRangeQuery(DEFAULT_TEST_FIELD, null, null, false, false);
    assertFalse(query.getTermsEnum(terms) instanceof TermRangeTermsEnum);
    assertEquals(4, searcher.search(dq(query), null, 1000).scoreDocs.length);

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      assert !terms.isEmpty();
      final AtomicReader reader = context.reader();
      final Bits liveDocs = acceptDocs;
      final PostingsAndPosition[] postings = new PostingsAndPosition[terms.size()];


      final Terms fieldTerms = reader.terms(field);
      if (fieldTerms == null) {
        return null;
      }


      // Reuse single TermsEnum below:
      final TermsEnum te = fieldTerms.iterator(null);


      for (int i = 0; i < terms.size(); i++) {
        final Term t = terms.get(i);
        final TermState state = states[i].get(context.ord);
        if (state == null) { /* term doesnt exist in this segment */

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