Example usage for org.apache.lucene.queries.function FunctionMatchQuery FunctionMatchQuery

Introduction

In this page you can find the example usage for org.apache.lucene.queries.function FunctionMatchQuery FunctionMatchQuery.

Prototype

public FunctionMatchQuery(DoubleValuesSource source, DoublePredicate filter) 

Source Link

Document

Create a FunctionMatchQuery

Usage

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

License:Apache License

@Override
public ConstantScoreQuery makeQuery(SpatialArgs args) {
    if (!SpatialOperation.is(args.getOperation(), SpatialOperation.Intersects, SpatialOperation.IsWithin))
        throw new UnsupportedSpatialOperation(args.getOperation());
    Shape shape = args.getShape();
    if (shape instanceof Rectangle) {
        Rectangle bbox = (Rectangle) shape;
        return new ConstantScoreQuery(makeWithin(bbox));
    } else if (shape instanceof Circle) {
        Circle circle = (Circle) shape;/*from w w  w.  j  av  a2  s .  c  o m*/
        Rectangle bbox = circle.getBoundingBox();
        Query approxQuery = makeWithin(bbox);
        BooleanQuery.Builder bqBuilder = new BooleanQuery.Builder();
        double r = circle.getRadius();
        FunctionMatchQuery vsMatchQuery = new FunctionMatchQuery(makeDistanceValueSource(circle.getCenter()),
                v -> 0 <= v && v <= r);
        bqBuilder.add(approxQuery, BooleanClause.Occur.FILTER);//should have lowest "cost" value; will drive iteration
        bqBuilder.add(vsMatchQuery, BooleanClause.Occur.FILTER);
        return new ConstantScoreQuery(bqBuilder.build());
    } else {
        throw new UnsupportedOperationException(
                "Only Rectangles and Circles are currently supported, " + "found [" + shape.getClass() + "]");//TODO
    }
}

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