Examples of NumericTokenStream

org.apache.lucene.analysis.NumericTokenStream
Expert: This class provides a {@link TokenStream}for indexing numeric values that can be used by {@link NumericRangeQuery} or {@link NumericRangeFilter}.
Note that for simple usage, {@link NumericField} isrecommended. {@link NumericField} disables norms andterm freqs, as they are not usually needed during searching. If you need to change these settings, you should use this class.
See {@link NumericField} for capabilities of fieldsindexed numerically.

Here's an example usage, for an int field:
```
 Field field = new Field(name, new NumericTokenStream(precisionStep).setIntValue(value)); field.setOmitNorms(true); field.setOmitTermFreqAndPositions(true); document.add(field); 
```
For optimal performance, re-use the TokenStream and Field instance for more than one document:
```
 NumericTokenStream stream = new NumericTokenStream(precisionStep); Field field = new Field(name, stream); field.setOmitNorms(true); field.setOmitTermFreqAndPositions(true); Document document = new Document(); document.add(field); for(all documents) { stream.setIntValue(value) writer.addDocument(document); } 
```
This stream is not intended to be used in analyzers; it's more for iterating the different precisions during indexing a specific numeric value.

NOTE: as token streams are only consumed once the document is added to the index, if you index more than one numeric field, use a separate NumericTokenStream instance for each.

See {@link NumericRangeQuery} for more details on theprecisionStep parameter as well as how numeric fields work under the hood.

NOTE: This API is experimental and might change in incompatible ways in the next release. @since 2.9

Examples of org.apache.lucene.analysis.NumericTokenStream

   * @param index if the field should be indexed using {@link NumericTokenStream}
   */
  public NumericField(String name, int precisionStep, Field.Store store, boolean index) {
    super(name, store, index ? Field.Index.ANALYZED_NO_NORMS : Field.Index.NO, Field.TermVector.NO);
    setOmitTermFreqAndPositions(true);
    tokenStream = new NumericTokenStream(precisionStep);
  }

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Examples of org.apache.lucene.analysis.NumericTokenStream

  
  protected final OffsetAttribute ofsAtt = addAttribute(OffsetAttribute.class);
  protected int startOfs, endOfs;


  static NumericTokenStream getNumericTokenStream(int precisionStep) {
    return new NumericTokenStream(precisionStep);
  }

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Examples of org.apache.lucene.analysis.NumericTokenStream

    if (!isIndexed())
      return null;
    if (numericTS == null) {
      // lazy init the TokenStream as it is heavy to instantiate (attributes,...),
      // if not needed (stored field loading)
      numericTS = new NumericTokenStream(precisionStep);
      // initialize value in TokenStream
      if (fieldsData != null) {
        assert type != null;
        final Number val = (Number) fieldsData;
        switch (type) {

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Examples of org.apache.lucene.analysis.NumericTokenStream

    final NumericType numericType = fieldType().numericType();
    if (numericType != null) {
      if (!(internalTokenStream instanceof NumericTokenStream)) {
        // lazy init the TokenStream as it is heavy to instantiate
        // (attributes,...) if not needed (stored field loading)
        internalTokenStream = new NumericTokenStream(type.numericPrecisionStep());
      }
      final NumericTokenStream nts = (NumericTokenStream) internalTokenStream;
      // initialize value in TokenStream
      final Number val = (Number) fieldsData;
      switch (numericType) {
      case INT:
        nts.setIntValue(val.intValue());
        break;
      case LONG:
        nts.setLongValue(val.longValue());
        break;
      case FLOAT:
        nts.setFloatValue(val.floatValue());
        break;
      case DOUBLE:
        nts.setDoubleValue(val.doubleValue());
        break;
      default:
        throw new AssertionError("Should never get here");
      }
      return internalTokenStream;

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Examples of org.apache.lucene.analysis.NumericTokenStream

    }


    public static class NumericIpTokenizer extends NumericTokenizer {


        public NumericIpTokenizer(Reader reader, int precisionStep) throws IOException {
            super(reader, new NumericTokenStream(precisionStep), null);
        }

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Examples of org.apache.lucene.analysis.NumericTokenStream

        public NumericIpTokenizer(Reader reader, int precisionStep) throws IOException {
            super(reader, new NumericTokenStream(precisionStep), null);
        }


        public NumericIpTokenizer(Reader reader, int precisionStep, char[] buffer) throws IOException {
            super(reader, new NumericTokenStream(precisionStep), buffer, null);
        }

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Examples of org.apache.lucene.analysis.NumericTokenStream

 * @author kimchy (shay.banon)
 */
public class NumericLongTokenizer extends NumericTokenizer {


    public NumericLongTokenizer(Reader reader, int precisionStep) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), null);
    }

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Examples of org.apache.lucene.analysis.NumericTokenStream

    public NumericLongTokenizer(Reader reader, int precisionStep) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), null);
    }


    public NumericLongTokenizer(Reader reader, int precisionStep, char[] buffer) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), buffer, null);
    }

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Examples of org.apache.lucene.analysis.NumericTokenStream

 * @author kimchy (shay.banon)
 */
public class NumericIntegerTokenizer extends NumericTokenizer {


    public NumericIntegerTokenizer(Reader reader, int precisionStep) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), null);
    }

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Examples of org.apache.lucene.analysis.NumericTokenStream

    public NumericIntegerTokenizer(Reader reader, int precisionStep) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), null);
    }


    public NumericIntegerTokenizer(Reader reader, int precisionStep, char[] buffer) throws IOException {
        super(reader, new NumericTokenStream(precisionStep), buffer, null);
    }

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