Example usage for org.apache.solr.search FunctionQParser parseValueSourceList

Introduction

In this page you can find the example usage for org.apache.solr.search FunctionQParser parseValueSourceList.

Prototype

public List<ValueSource> parseValueSourceList() throws SyntaxError 

Source Link

Document

Parse a list of ValueSource.

Usage

From source file:com.gogobot.DistanceParser.java

License:Apache License

@Override
public ValueSource parse(FunctionQParser fp) throws SyntaxError {
    // TODO: dispatch through SpatialQueryable in the future?

    //note: parseValueSourceList can't handle a field reference to an AbstractSpatialFieldType,
    // so those fields are expressly handled via sfield=
    List<ValueSource> sources = fp.parseValueSourceList();

    // "m" is a multi-value source, "x" is a single-value source
    // allow (m,m) (m,x,x) (x,x,m) (x,x,x,x)
    // if not enough points are present, "pt" will be checked first, followed by "sfield".

    MultiValueSource mv1 = null;/* w w w.  jav a2  s  .c om*/
    MultiValueSource mv2 = null;

    if (sources.size() == 0) {
        // nothing to do now
    } else if (sources.size() == 1) {
        ValueSource vs = sources.get(0);
        if (!(vs instanceof MultiValueSource)) {
            throw new SyntaxError("geodist - invalid parameters:" + sources);
        }
        mv1 = (MultiValueSource) vs;
    } else if (sources.size() == 2) {
        ValueSource vs1 = sources.get(0);
        ValueSource vs2 = sources.get(1);

        if (vs1 instanceof MultiValueSource && vs2 instanceof MultiValueSource) {
            mv1 = (MultiValueSource) vs1;
            mv2 = (MultiValueSource) vs2;
        } else {
            mv1 = makeMV(sources, sources);
        }
    } else if (sources.size() == 3) {
        ValueSource vs1 = sources.get(0);
        ValueSource vs2 = sources.get(1);
        if (vs1 instanceof MultiValueSource) { // (m,x,x)
            mv1 = (MultiValueSource) vs1;
            mv2 = makeMV(sources.subList(1, 3), sources);
        } else { // (x,x,m)
            mv1 = makeMV(sources.subList(0, 2), sources);
            vs1 = sources.get(2);
            if (!(vs1 instanceof MultiValueSource)) {
                throw new SyntaxError("geodist - invalid parameters:" + sources);
            }
            mv2 = (MultiValueSource) vs1;
        }
    } else if (sources.size() == 4) {
        mv1 = makeMV(sources.subList(0, 2), sources);
        mv2 = makeMV(sources.subList(2, 4), sources);
    } else if (sources.size() > 4) {
        throw new SyntaxError("geodist - invalid parameters:" + sources);
    }

    if (mv1 == null) {
        mv1 = parsePoint(fp);
        mv2 = parseSfield(fp);
    } else if (mv2 == null) {
        mv2 = parsePoint(fp);
        if (mv2 == null)
            mv2 = parseSfield(fp);
    }

    if (mv1 == null || mv2 == null) {
        throw new SyntaxError("geodist - not enough parameters:" + sources);
    }

    // We have all the parameters at this point, now check if one of the points is constant
    double[] constants;//latLon
    constants = getConstants(mv1);
    MultiValueSource other = mv2;
    if (constants == null) {
        constants = getConstants(mv2);
        other = mv1;
    }

    // At this point we dispatch to one of:
    // * SpatialStrategy.makeDistanceValueSource
    // * HaversineConstFunction
    // * HaversineFunction

    // sfield can only be in mv2, according to the logic above
    if (mv2 instanceof SpatialStrategyMultiValueSource) {
        if (constants == null)
            throw new SyntaxError("When using AbstractSpatialFieldType (e.g. RPT not LatLonType),"
                    + " the point must be supplied as constants");
        // note: uses Haversine by default but can be changed via distCalc=...
        SpatialStrategy strategy = ((SpatialStrategyMultiValueSource) mv2).strategy;
        Point queryPoint = strategy.getSpatialContext().makePoint(constants[1], constants[0]);
        //TODO Spatial4j 0.4 will have a direct constant
        double multiplier = DistanceUtils.degrees2Dist(1, DistanceUtils.EARTH_MEAN_RADIUS_KM);
        return strategy.makeDistanceValueSource(queryPoint, multiplier);
    }

    if (constants != null && other instanceof VectorValueSource) {
        return new GogobotHaversineConstFunction(constants[0], constants[1], (VectorValueSource) other);
    }

    return new HaversineFunction(mv1, mv2, DistanceUtils.EARTH_MEAN_RADIUS_KM, true);
}

---

From source file:com.mysoft.b2b.solr.B258DynamicSourceParser.java

License:Open Source License

public ValueSource parse(FunctionQParser fp) throws SyntaxError {
    String field = fp.parseArg();
    ValueSource v1 = getValueSource(fp, field);
    List<ValueSource> sources = fp.parseValueSourceList();
    return new B258DynamicSource(sources.toArray(new ValueSource[sources.size()]), v1);
}

---

From source file:org.apache.lucene.function.dwarf.ManualScoreParser.java

License:Apache License

@Override
public ValueSource parse(FunctionQParser fp) throws SyntaxError {
    List<ValueSource> sources = fp.parseValueSourceList();
    ValueSource[] objl = sources.toArray(new ValueSource[sources.size()]);
    return new ManualScore(objl);
}

---