Examples of FloatDocValuesField

org.apache.lucene.document.FloatDocValuesField
Syntactic sugar for encoding floats as NumericDocValues via {@link Float#floatToRawIntBits(float)}.
Per-document floating point values can be retrieved via {@link FieldCache#getFloats(AtomicReader,String,boolean)}.
NOTE: In most all cases this will be rather inefficient, requiring four bytes per document. Consider encoding floating point values yourself with only as much precision as you require.

Examples of org.apache.lucene.document.FloatDocValuesField

    doc.add(new SortedDocValuesField("dvBytesSortedFixed", ref));
    doc.add(new SortedDocValuesField("dvBytesSortedVar", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightFixed", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightVar", ref));
    doc.add(new DoubleDocValuesField("dvDouble", (double)id));
    doc.add(new FloatDocValuesField("dvFloat", (float)id));
    doc.add(new NumericDocValuesField("dvInt", id));
    doc.add(new NumericDocValuesField("dvLong", id));
    doc.add(new NumericDocValuesField("dvPacked", id));
    doc.add(new NumericDocValuesField("dvShort", (short)id));
    // a field with both offsets and term vectors for a cross-check

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Examples of org.apache.lucene.document.FloatDocValuesField

    RandomIndexWriter iwriter = new RandomIndexWriter(random(), directory);
    Document doc = new Document();
    String longTerm = "longtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongtermlongterm";
    String text = "This is the text to be indexed. " + longTerm;
    doc.add(newTextField("fieldname", text, Field.Store.YES));
    doc.add(new FloatDocValuesField("dv", 5.7f));
    iwriter.addDocument(doc);
    iwriter.close();
    
    // Now search the index:
    IndexReader ireader = DirectoryReader.open(directory); // read-only=true

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Examples of org.apache.lucene.document.FloatDocValuesField

  /** Tests sorting on type float */
  public void testFloat() throws IOException {
    Directory dir = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    Document doc = new Document();
    doc.add(new FloatDocValuesField("value", 30.1F));
    doc.add(newStringField("value", "30.1", Field.Store.YES));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new FloatDocValuesField("value", -1.3F));
    doc.add(newStringField("value", "-1.3", Field.Store.YES));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new FloatDocValuesField("value", 4.2F));
    doc.add(newStringField("value", "4.2", Field.Store.YES));
    writer.addDocument(doc);
    IndexReader ir = writer.getReader();
    writer.close();

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Examples of org.apache.lucene.document.FloatDocValuesField

  /** Tests sorting on type float in reverse */
  public void testFloatReverse() throws IOException {
    Directory dir = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    Document doc = new Document();
    doc.add(new FloatDocValuesField("value", 30.1F));
    doc.add(newStringField("value", "30.1", Field.Store.YES));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new FloatDocValuesField("value", -1.3F));
    doc.add(newStringField("value", "-1.3", Field.Store.YES));
    writer.addDocument(doc);
    doc = new Document();
    doc.add(new FloatDocValuesField("value", 4.2F));
    doc.add(newStringField("value", "4.2", Field.Store.YES));
    writer.addDocument(doc);
    IndexReader ir = writer.getReader();
    writer.close();

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Examples of org.apache.lucene.document.FloatDocValuesField

    Directory dir = newDirectory();
    RandomIndexWriter iw = new RandomIndexWriter(random(), dir);
    Document doc = new Document();
    Field field = newTextField("foo", "", Field.Store.NO);
    doc.add(field);
    Field dvField = new FloatDocValuesField("foo_boost", 0.0F);
    doc.add(dvField);
    Field field2 = newTextField("bar", "", Field.Store.NO);
    doc.add(field2);
    
    field.setStringValue("quick brown fox");
    field2.setStringValue("quick brown fox");
    dvField.setFloatValue(2f); // boost x2
    iw.addDocument(doc);
    field.setStringValue("jumps over lazy brown dog");
    field2.setStringValue("jumps over lazy brown dog");
    dvField.setFloatValue(4f); // boost x4
    iw.addDocument(doc);
    IndexReader ir = iw.getReader();
    iw.close();
    
    // no boosting

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Examples of org.apache.lucene.document.FloatDocValuesField

    doc.add(new SortedDocValuesField("dvBytesSortedFixed", ref));
    doc.add(new SortedDocValuesField("dvBytesSortedVar", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightFixed", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightVar", ref));
    doc.add(new DoubleDocValuesField("dvDouble", (double)id));
    doc.add(new FloatDocValuesField("dvFloat", (float)id));
    doc.add(new NumericDocValuesField("dvInt", id));
    doc.add(new NumericDocValuesField("dvLong", id));
    doc.add(new NumericDocValuesField("dvPacked", id));
    doc.add(new NumericDocValuesField("dvShort", (short)id));
    doc.add(new SortedSetDocValuesField("dvSortedSet", ref));

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Examples of org.apache.lucene.document.FloatDocValuesField

    doc.add(new SortedDocValuesField("dvBytesSortedFixed", ref));
    doc.add(new SortedDocValuesField("dvBytesSortedVar", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightFixed", ref));
    doc.add(new BinaryDocValuesField("dvBytesStraightVar", ref));
    doc.add(new DoubleDocValuesField("dvDouble", (double)id));
    doc.add(new FloatDocValuesField("dvFloat", (float)id));
    doc.add(new NumericDocValuesField("dvInt", id));
    doc.add(new NumericDocValuesField("dvLong", id));
    doc.add(new NumericDocValuesField("dvPacked", id));
    doc.add(new NumericDocValuesField("dvShort", (short)id));
    doc.add(new SortedSetDocValuesField("dvSortedSet", ref));

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Examples of org.apache.lucene.document.FloatDocValuesField

    List<TestDoc> testDocs = getRandomDocs(tokens, numDocs, numDims);
    for(TestDoc testDoc : testDocs) {
      Document doc = new Document();
      doc.add(newStringField("content", testDoc.content, Field.Store.NO));
      testDoc.value = random().nextFloat();
      doc.add(new FloatDocValuesField("value", testDoc.value));
      for(int j=0;j<numDims;j++) {
        if (testDoc.dims[j] != null) {
          doc.add(new FacetField("dim" + j, testDoc.dims[j]));
        }
      }

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Examples of org.apache.lucene.document.FloatDocValuesField


  public void testBasicFloat() throws Exception {
    Directory d = newDirectory();
    RandomIndexWriter w = new RandomIndexWriter(random(), d);
    Document doc = new Document();
    FloatDocValuesField field = new FloatDocValuesField("field", 0.0f);
    doc.add(field);
    for(long l=0;l<100;l++) {
      field.setFloatValue(l);
      w.addDocument(doc);
    }


    IndexReader r = w.getReader();

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Examples of org.apache.lucene.document.FloatDocValuesField

    float maxValue = Float.NEGATIVE_INFINITY;
    for(int i=0;i<numDocs;i++) {
      Document doc = new Document();
      float v = random().nextFloat();
      values[i] = v;
      doc.add(new FloatDocValuesField("field", v));
      doc.add(new FloatField("field", v, Field.Store.NO));
      w.addDocument(doc);
      minValue = Math.min(minValue, v);
      maxValue = Math.max(maxValue, v);
    }

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