Examples of org.apache.lucene.document.BinaryDocValuesField

org.apache.lucene.document.BinaryDocValuesField
Field that stores a per-document {@link BytesRef} value.
The values are stored directly with no sharing, which is a good fit when the fields don't share (many) values, such as a title field. If values may be shared and sorted it's better to use {@link SortedDocValuesField}. Here's an example usage:
```
 document.add(new BinaryDocValuesField(name, new BytesRef("hello"))); 
```
If you also need to store the value, you should add a separate {@link StoredField} instance. @see BinaryDocValues

    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 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();

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      BytesRef bytes = new BytesRef();
      bytes.bytes = new byte[1<<i];
      bytes.length = 1<<i;
      for(int j=0;j<4;j++) {
        Document doc = new Document();
        doc.add(new BinaryDocValuesField("field", bytes));
        w.addDocument(doc);
      }
      Document doc = new Document();
      doc.add(new StoredField("id", "5"));
      doc.add(new BinaryDocValuesField("field", new BytesRef()));
      w.addDocument(doc);
      IndexReader r = w.getReader();
      w.close();


      AtomicReader ar = SlowCompositeReaderWrapper.wrap(r);

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    assumeTrue("3.x does not support docvalues", defaultCodecSupportsDocValues());
    Directory dir = newDirectory();
    IndexWriterConfig iwc = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    RandomIndexWriter iw = new RandomIndexWriter(random(), dir, iwc);
    Document doc = new Document();
    doc.add(new BinaryDocValuesField("binary", new BytesRef("binary value")));
    doc.add(new SortedDocValuesField("sorted", new BytesRef("sorted value")));
    doc.add(new NumericDocValuesField("numeric", 42));
    if (defaultCodecSupportsSortedSet()) {
      doc.add(new SortedSetDocValuesField("sortedset", new BytesRef("sortedset value1")));
      doc.add(new SortedSetDocValuesField("sortedset", new BytesRef("sortedset value2")));

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    doc.add(new NumericDocValuesField("field", 17));
    w.addDocument(doc);
    
    // Index doc values are single-valued so we should not
    // be able to add same field more than once:
    doc.add(new BinaryDocValuesField("field", new BytesRef("blah")));
    try {
      w.addDocument(doc);
      fail("didn't hit expected exception");
    } catch (IllegalArgumentException iae) {
      // expected

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    // we don't use RandomIndexWriter because it might add more docvalues than we expect !!!!1
    IndexWriterConfig iwc = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
    iwc.setMergePolicy(newLogMergePolicy());
    IndexWriter iwriter = new IndexWriter(directory, iwc);
    Document doc = new Document();
    doc.add(new BinaryDocValuesField("dv", new BytesRef("foo!")));
    iwriter.addDocument(doc);
    
    doc.add(new BinaryDocValuesField("dv", new BytesRef("bar!")));
    try {
      iwriter.addDocument(doc);
      fail("didn't hit expected exception");
    } catch (IllegalArgumentException expected) {
      // expected

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      if (i == 0) {
        field = new SortedDocValuesField("foo", new BytesRef("hello"));
      } else if (i == 1) {
        field = new NumericDocValuesField("foo", 0);
      } else {
        field = new BinaryDocValuesField("foo", new BytesRef("bazz"));
      }
      final Document doc = new Document();
      doc.add(field);


      threads[i] = new Thread() {

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    doc.add(new NumericDocValuesField("f", 5));
    writer.addDocument(doc);
    writer.commit();
    
    doc = new Document();
    doc.add(new BinaryDocValuesField("f", new BytesRef("mock")));
    try {
      writer.addDocument(doc);
      fail("should not have succeeded to add a field with different DV type than what already exists");
    } catch (IllegalArgumentException e) {
      writer.rollback();

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        for (int i = 0; i < numDocs; i++) {
          Document doc = new Document();
          doc.add(newStringField("id", Integer.toString(i), Field.Store.NO));
          doc.add(new NumericDocValuesField("dv", i));
          doc.add(new BinaryDocValuesField("dv2", new BytesRef(Integer.toString(i))));
          doc.add(new SortedDocValuesField("dv3", new BytesRef(Integer.toString(i))));
          if (defaultCodecSupportsSortedSet()) {
            doc.add(new SortedSetDocValuesField("dv4", new BytesRef(Integer.toString(i))));
            doc.add(new SortedSetDocValuesField("dv4", new BytesRef(Integer.toString(i-1))));
          }

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      for (int i = 0; i < numDocs; i++) {
        // TODO: add crankyDocValuesFields, etc
        Document doc = new Document();
        doc.add(newStringField("id", Integer.toString(i), Field.Store.NO));
        doc.add(new NumericDocValuesField("dv", i));
        doc.add(new BinaryDocValuesField("dv2", new BytesRef(Integer.toString(i))));
        doc.add(new SortedDocValuesField("dv3", new BytesRef(Integer.toString(i))));
        if (defaultCodecSupportsSortedSet()) {
          doc.add(new SortedSetDocValuesField("dv4", new BytesRef(Integer.toString(i))));
          doc.add(new SortedSetDocValuesField("dv4", new BytesRef(Integer.toString(i-1))));
        }

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      });
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
    this.indexLastBufSize = bytesRef.length;//cache heuristic
    return new Field[]{new BinaryDocValuesField(getFieldName(), bytesRef)};
  }

View Full Code Here

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