Examples of org.apache.lucene.document.NumericDocValuesField

org.apache.lucene.document.NumericDocValuesField
Field that stores a per-document long value for scoring, sorting or value retrieval. Here's an example usage:
```
 document.add(new NumericDocValuesField(name, 22L)); 
```
If you also need to store the value, you should add a separate {@link StoredField} instance.

    Directory directory = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iwriter = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new NumericDocValuesField("dv", -8841491950446638677L));
    iwriter.addDocument(doc);
    doc = new Document();
    doc.add(new NumericDocValuesField("dv", 9062230939892376225L));
    iwriter.addDocument(doc);
    iwriter.forceMerge(1);
    iwriter.close();
    
    // Now search the index:

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    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
    conf.setMergePolicy(newLogMergePolicy());
    IndexWriter writer = new IndexWriter(dir, conf);
    for (int i = 0; i < 5; i++) {
      Document doc = new Document();
      doc.add(new NumericDocValuesField("docId", i));
      doc.add(new TextField("docId", "" + i, Field.Store.NO));
      writer.addDocument(doc);
    }
    writer.commit();
    writer.forceMerge(1, true);

View Full Code Here

    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedField = newStringField("stored", "", Field.Store.YES);
    Field dvField = new NumericDocValuesField("dv", 0);
    doc.add(idField);
    doc.add(storedField);
    doc.add(dvField);
    
    // index some docs
    int numDocs = atLeast(300);
    // numDocs should be always > 256 so that in case of a codec that optimizes
    // for numbers of values <= 256, all storage layouts are tested
    assert numDocs > 256;
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      long value = longs.next();
      storedField.setStringValue(Long.toString(value));
      dvField.setLongValue(value);
      writer.addDocument(doc);
      if (random().nextInt(31) == 0) {
        writer.commit();
      }
    }

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    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Field idField = new StringField("id", "", Field.Store.NO);
    Field indexedField = newStringField("indexed", "", Field.Store.NO);
    Field dvField = new NumericDocValuesField("dv", 0);


    
    // index some docs
    int numDocs = atLeast(300);
    // numDocs should be always > 256 so that in case of a codec that optimizes
    // for numbers of values <= 256, all storage layouts are tested
    assert numDocs > 256;
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      long value = longs.next();
      indexedField.setStringValue(Long.toString(value));
      dvField.setLongValue(value);
      Document doc = new Document();
      doc.add(idField);
      // 1/4 of the time we neglect to add the fields
      if (random().nextInt(4) > 0) {
        doc.add(indexedField);

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    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iw = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 0));
    iw.addDocument(doc);
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.YES));
    iw.addDocument(doc);
    iw.forceMerge(1);

View Full Code Here

    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iw = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 0));
    iw.addDocument(doc);
    iw.commit();
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.YES));
    iw.addDocument(doc);

View Full Code Here

    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iw = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 0));
    iw.addDocument(doc);
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.YES));
    iw.addDocument(doc);
    iw.commit();
    doc = new Document();
    doc.add(new StringField("id", "2", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 5));
    iw.addDocument(doc);
    iw.forceMerge(1);
    iw.close();
    
    IndexReader ir = DirectoryReader.open(directory);

View Full Code Here

    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedBinField = new StoredField("storedBin", new byte[0]);
    Field dvBinField = new BinaryDocValuesField("dvBin", new BytesRef());
    Field dvSortedField = new SortedDocValuesField("dvSorted", new BytesRef());
    Field storedNumericField = new StoredField("storedNum", "");
    Field dvNumericField = new NumericDocValuesField("dvNum", 0);
    doc.add(idField);
    doc.add(storedBinField);
    doc.add(dvBinField);
    doc.add(dvSortedField);
    doc.add(storedNumericField);
    doc.add(dvNumericField);
    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      int length = _TestUtil.nextInt(random(), 0, 8);
      byte buffer[] = new byte[length];
      random().nextBytes(buffer);
      storedBinField.setBytesValue(buffer);
      dvBinField.setBytesValue(buffer);
      dvSortedField.setBytesValue(buffer);
      long numericValue = random().nextLong();
      storedNumericField.setStringValue(Long.toString(numericValue));
      dvNumericField.setLongValue(numericValue);
      writer.addDocument(doc);
      if (random().nextInt(31) == 0) {
        writer.commit();
      }
    }

View Full Code Here

    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedBinField = new StoredField("storedBin", new byte[0]);
    Field dvBinField = new BinaryDocValuesField("dvBin", new BytesRef());
    Field dvSortedField = new SortedDocValuesField("dvSorted", new BytesRef());
    Field storedNumericField = new StoredField("storedNum", "");
    Field dvNumericField = new NumericDocValuesField("dvNum", 0);
    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      int length = _TestUtil.nextInt(random(), 0, 8);
      byte buffer[] = new byte[length];
      random().nextBytes(buffer);
      storedBinField.setBytesValue(buffer);
      dvBinField.setBytesValue(buffer);
      dvSortedField.setBytesValue(buffer);
      long numericValue = random().nextLong();
      storedNumericField.setStringValue(Long.toString(numericValue));
      dvNumericField.setLongValue(numericValue);
      Document doc = new Document();
      doc.add(idField);
      if (random().nextInt(4) > 0) {
        doc.add(storedBinField);
        doc.add(dvBinField);

View Full Code Here

  private Map<String, Document> generateIndexDocuments(int ndocs) {
    Map<String, Document> docs = new HashMap<String, Document>();
    for(int i = 0; i < ndocs ; i++) {
      Field field = new TextField(FIELD_NAME, "field_" + i, Field.Store.YES);
      Field payload = new StoredField(PAYLOAD_FIELD_NAME, new BytesRef("payload_" + i));
      Field weight1 = new NumericDocValuesField(WEIGHT_FIELD_NAME_1, 10 + i);
      Field weight2 = new NumericDocValuesField(WEIGHT_FIELD_NAME_2, 20 + i);
      Field weight3 = new NumericDocValuesField(WEIGHT_FIELD_NAME_3, 30 + i);
      Document doc = new Document();
      doc.add(field);
      doc.add(payload);
      doc.add(weight1);
      doc.add(weight2);

View Full Code Here

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