Example usage for org.apache.lucene.search DoubleValuesSource fromDoubleField

Introduction

In this page you can find the example usage for org.apache.lucene.search DoubleValuesSource fromDoubleField.

Prototype

public static DoubleValuesSource fromDoubleField(String field) 

Source Link

Document

Creates a DoubleValuesSource that wraps a double-valued field

Usage

From source file:org.apache.solr.legacy.BBoxValueSource.java

License:Apache License

@Override
public ShapeValues getValues(LeafReaderContext readerContext) throws IOException {

    final DoubleValues minX = DoubleValuesSource.fromDoubleField(strategy.field_minX).getValues(readerContext,
            null);//from   w w  w. jav  a2  s  .  c  o m
    final DoubleValues minY = DoubleValuesSource.fromDoubleField(strategy.field_minY).getValues(readerContext,
            null);
    final DoubleValues maxX = DoubleValuesSource.fromDoubleField(strategy.field_maxX).getValues(readerContext,
            null);
    final DoubleValues maxY = DoubleValuesSource.fromDoubleField(strategy.field_maxY).getValues(readerContext,
            null);

    //reused
    final Rectangle rect = strategy.getSpatialContext().makeRectangle(0, 0, 0, 0);

    return new ShapeValues() {

        @Override
        public boolean advanceExact(int doc) throws IOException {
            return minX.advanceExact(doc) && maxX.advanceExact(doc) && minY.advanceExact(doc)
                    && maxY.advanceExact(doc);
        }

        @Override
        public Shape value() throws IOException {
            rect.reset(minX.doubleValue(), maxX.doubleValue(), minY.doubleValue(), maxY.doubleValue());
            return rect;
        }

    };
}

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From source file:org.apache.solr.legacy.DistanceValueSource.java

License:Apache License

/**
 * Returns the FunctionValues used by the function query.
 *//* w w w.j  a v  a  2s  . co  m*/
@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);

}

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