Examples of org.apache.lucene.index.Fields.terms()

org.apache.lucene.index.Fields.terms()
Get the {@link Terms} for this field. This will returnnull if the field does not exist.


    for (String fieldName : fields) {
      if (fieldName.equals(DocMaker.ID_FIELD) || fieldName.equals(DocMaker.DATE_MSEC_FIELD) || fieldName.equals(DocMaker.TIME_SEC_FIELD)) {
        continue;
      }
      Terms terms = fields.terms(fieldName);
      if (terms == null) {
        continue;
      }
      TermsEnum termsEnum = terms.iterator(null);
      DocsEnum docs = null;

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  }


  private TermsEnum getIterator() throws IOException {
    LuceneSearcher luceneSearcher = getLuceneSearcher(3);
    Fields fields = MultiFields.getFields(luceneSearcher.getReader());
    Terms terms = fields.terms("ngram");
    return terms.iterator(null);
  }


  public static void main(String[] args) throws IOException {
    if (args.length != 1) {

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                    // skip internal fields
                    if (field.charAt(0) == '_') {
                        continue;
                    }
                    if (request.getField() == null || field.equals(request.getField())) {
                        Terms terms = fields.terms(field);
                        if (terms != null) {
                            TermsEnum termsEnum = terms.iterator(null);
                            BytesRef text;
                            while ((text = termsEnum.next()) != null) {
                                // skip invalid terms

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      if (termVectorsToFetch != null && termVectorsToFetch.size() > 0) {
        Map<String, TermFrequencyVector> tvMap = new HashMap<String, TermFrequencyVector>();
        hit.setTermFreqMap(tvMap);
        Fields fds = reader.getTermVectors(fdoc.doc);
        for (String field : termVectorsToFetch) {
          Terms terms = fds.terms(field);
          if (terms == null) {
            continue;
          }
          TermsEnum termsEnum = terms.iterator(null);
          List<String> texts = new ArrayList<String>();

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      if ( isCompatibleField( fieldName ) ) {
        Map<String,Int> termFreqMap = new HashMap<String, Int>();
        termFreqMapPerFieldname.put( fieldName, termFreqMap );
        final Terms vector;
        if ( vectors != null ) {
          vector = vectors.terms( fieldName );
        }
        else {
          vector = null;
        }

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        TermVectorResponse termVectorResponse = client().prepareTermVector(indexOrAlias(), "type1", "1").get();
        assertThat(termVectorResponse.getIndex(), equalTo("test"));
        assertThat(termVectorResponse.isExists(), equalTo(true));
        Fields fields = termVectorResponse.getFields();
        assertThat(fields.size(), equalTo(1));
        assertThat(fields.terms("field").size(), equalTo(8l));
    }


    @Test
    public void testIndicesStats() {
        createIndex("test");

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        MoreLikeThisQuery mltQuery = (MoreLikeThisQuery) itemClause.getQuery();


        // check each Fields is for each item
        for (int id = 1; id <= 4; id++) {
            Fields fields = mltQuery.getLikeFields()[id - 1];
            assertThat(termsToString(fields.terms("name.first")), is(String.valueOf(id)));
            assertThat(termsToString(fields.terms("name.last")), is(String.valueOf(id)));
        }
    }


    @Test

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        // check each Fields is for each item
        for (int id = 1; id <= 4; id++) {
            Fields fields = mltQuery.getLikeFields()[id - 1];
            assertThat(termsToString(fields.terms("name.first")), is(String.valueOf(id)));
            assertThat(termsToString(fields.terms("name.last")), is(String.valueOf(id)));
        }
    }


    @Test
    public void testMLTPercentTermsToMatch() throws Exception {

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                .setPositions(true).setTermStatistics(true).setFieldStatistics(false).setSelectedFields();
        TermVectorResponse response = resp.execute().actionGet();
        assertThat("doc id: " + i + " doesn't exists but should", response.isExists(), equalTo(true));
        Fields fields = response.getFields();
        assertThat(fields.size(), equalTo(1));
        Terms terms = fields.terms("field");
        assertThat(terms.size(), equalTo(8l));
        assertThat(terms.getSumTotalTermFreq(), Matchers.equalTo((long) -1));
        assertThat(terms.getDocCount(), Matchers.equalTo(-1));
        assertThat(terms.getSumDocFreq(), equalTo((long) -1));
        TermsEnum iterator = terms.iterator(null);

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        assertThat(resp.request().termStatistics(), equalTo(false));
        TermVectorResponse response = resp.execute().actionGet();
        assertThat("doc id: " + i + " doesn't exists but should", response.isExists(), equalTo(true));
        Fields fields = response.getFields();
        assertThat(fields.size(), equalTo(1));
        Terms terms = fields.terms("field");
        assertThat(terms.size(), equalTo(8l));
        assertThat(terms.getSumTotalTermFreq(), Matchers.equalTo((long) (9 * numDocs)));
        assertThat(terms.getDocCount(), Matchers.equalTo(numDocs));
        assertThat(terms.getSumDocFreq(), equalTo((long) numDocs * values.length));
        TermsEnum iterator = terms.iterator(null);

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