org.apache.lucene.search.DoubleValues#withDefault ( )源码实例Demo

@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {

  final ShapeValues shapeValues = bboxValueSource.getValues(readerContext);
  return DoubleValues.withDefault(new DoubleValues() {
    @Override
    public double doubleValue() throws IOException {
      return score((Rectangle) shapeValues.value(), null);
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return shapeValues.advanceExact(doc);
    }
  }, 0);

}
 

@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {

  final ShapeValues shapeValues = shapeValueSource.getValues(readerContext);

  return DoubleValues.withDefault(new DoubleValues() {
    @Override
    public double doubleValue() throws IOException {
      return distCalc.distance(queryPoint, shapeValues.value().getCenter()) * multiplier;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return shapeValues.advanceExact(doc);
    }
  }, nullValue);
}
 

/**
 * Returns the FunctionValues used by the function query.
 */
@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {

  final DoubleValues ptX = DoubleValuesSource.fromDoubleField(strategy.getFieldNameX()).getValues(readerContext, null);
  final DoubleValues ptY = DoubleValuesSource.fromDoubleField(strategy.getFieldNameY()).getValues(readerContext, null);
  final DistanceCalculator calculator = strategy.getSpatialContext().getDistCalc();

  return DoubleValues.withDefault(new DoubleValues() {

    @Override
    public double doubleValue() throws IOException {
      return calculator.distance(from, ptX.doubleValue(), ptY.doubleValue()) * multiplier;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return ptX.advanceExact(doc) && ptY.advanceExact(doc);
    }
  }, nullValue);

}
 

/**
 * Returns the FunctionValues used by the function query.
 */
@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {
  LeafReader reader = readerContext.reader();

  final NumericDocValues ptX = DocValues.getNumeric(reader, strategy.getFieldNameX());
  final NumericDocValues ptY = DocValues.getNumeric(reader, strategy.getFieldNameY());

  return DoubleValues.withDefault(new DoubleValues() {

    private final Point from = DistanceValueSource.this.from;
    private final DistanceCalculator calculator = strategy.getSpatialContext().getDistCalc();

    @Override
    public double doubleValue() throws IOException {
      double x = Double.longBitsToDouble(ptX.longValue());
      double y = Double.longBitsToDouble(ptY.longValue());
      return calculator.distance(from, x, y) * multiplier;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return ptX.advanceExact(doc) && ptY.advanceExact(doc);
    }

  }, nullValue);
}
 

@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {

  final double nullValue = (ctx.isGeo() ? 180 * multiplier : Double.MAX_VALUE);

  return DoubleValues.withDefault(new DoubleValues() {
    private final ShapeFieldCache<Point> cache =
        provider.getCache(readerContext.reader());
    private final Point from = ShapeFieldCacheDistanceValueSource.this.from;
    private final DistanceCalculator calculator = ctx.getDistCalc();

    private List<Point> currentVals;

    @Override
    public double doubleValue() throws IOException {
      double v = calculator.distance(from, currentVals.get(0));
      for (int i = 1; i < currentVals.size(); i++) {
        v = Math.min(v, calculator.distance(from, currentVals.get(i)));
      }
      return v * multiplier;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      currentVals = cache.getShapes(doc);
      return currentVals != null;
    }
  }, nullValue);
}
 

@Override
public DoubleValues getValues(LeafReaderContext readerContext, DoubleValues scores) throws IOException {
  final ShapeValues shapeValues = shapeValueSource.getValues(readerContext);
  return DoubleValues.withDefault(new DoubleValues() {
    @Override
    public double doubleValue() throws IOException {
      return shapeValues.value().getArea(geoArea ? ctx : null) * multiplier;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return shapeValues.advanceExact(doc);
    }
  }, 0);
}
 

@Override
public DoubleValues getValues(LeafReaderContext ctx, DoubleValues scores) throws IOException {
  DoubleValues in = DoubleValues.withDefault(boost.getValues(ctx, scores), 1);
  return new DoubleValues() {
    @Override
    public double doubleValue() throws IOException {
      return scores.doubleValue() * in.doubleValue();
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return in.advanceExact(doc);
    }
  };
}
 

@Override
public DoubleValues getValues(LeafReaderContext ctx, DoubleValues scores) throws IOException {
  DoubleValues in = query.getValues(ctx, null);
  return DoubleValues.withDefault(new DoubleValues() {
    @Override
    public double doubleValue() {
      return boost;
    }

    @Override
    public boolean advanceExact(int doc) throws IOException {
      return in.advanceExact(doc);
    }
  }, 1);
}