Example usage for org.apache.solr.schema FieldType getValueSource

Introduction

In this page you can find the example usage for org.apache.solr.schema FieldType getValueSource.

Prototype

public ValueSource getValueSource(SchemaField field, QParser parser) 

Source Link

Document

called to get the default value source (normally, from the Lucene FieldCache.)

Usage

From source file:GeonamesQParserPlugin.java

License:Apache License

public QParser createParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req) {
    return new QParser(qstr, localParams, params, req) {
        @Override/*from w  ww  .j a  v a 2  s. c  o  m*/
        public Query parse() throws ParseException {
            final int rows = localParams.getInt("rows", 1);
            final int start = localParams.getInt("start", 0);
            String topo = localParams.get("topo");
            String distFunc = localParams.get("dist");
            String latFieldName = localParams.get("lat");
            String lonFieldName = localParams.get("lon");
            String ghFieldName = localParams.get("gh");
            String units = localParams.get("unit", "M");
            float boost = localParams.getFloat("boost", 1.0f);
            double radius = Constants.EARTH_RADIUS_MI;
            if (units.equalsIgnoreCase("KM")) {
                radius = Constants.EARTH_RADIUS_KM;
            }
            ValueSource vs = null, latVS = null, lonVS = null, ghVS = null;
            IndexSchema schema = req.getSchema();
            DistType distType = DistType.NORM;
            float power = 2;
            List<ValueSource> latLon = new ArrayList<ValueSource>(2);
            if (ghFieldName != null && ghFieldName.equals("") == false) {
                FieldType ft = schema.getFieldType(ghFieldName);
                SchemaField sf = schema.getField(ghFieldName);
                ghVS = ft.getValueSource(sf, this);//Should we pass this here?
                distType = DistType.GHHSIN;
            } else if (latFieldName != null && latFieldName.equals("") == false && lonFieldName != null
                    && lonFieldName.equals("") == false) {
                FieldType ftLat = schema.getFieldType(latFieldName);
                FieldType ftLon = schema.getFieldType(lonFieldName);
                SchemaField sfLat = schema.getField(latFieldName);
                SchemaField sfLon = schema.getField(lonFieldName);
                latVS = ftLat.getValueSource(sfLat, this);
                lonVS = ftLon.getValueSource(sfLon, this);
                latLon.add(latVS);
                latLon.add(lonVS);
                try {
                    power = Float.parseFloat(distFunc);
                    distType = DistType.NORM;
                } catch (NumberFormatException e) {
                    if (distFunc.equals("hsin")) {
                        distType = DistType.HSIN;
                    } else if (distFunc.equals("ghsin")) {
                        distType = DistType.GHHSIN;
                    }
                }
            } else {
                throw new ParseException("Either gh or both lat and lon must be specified.");
            }

            ToponymSearchCriteria searchCriteria = new ToponymSearchCriteria();
            searchCriteria.setQ(topo);
            searchCriteria.setMaxRows(rows);
            searchCriteria.setStartRow(start);
            Query query = null;
            try {
                ToponymSearchResult searchResult = WebService.search(searchCriteria);

                List<Toponym> topos = searchResult.getToponyms();
                if (topos.size() > 1) {
                    BooleanQuery tmp = new BooleanQuery();
                    for (Toponym toponym : topos) {
                        double lat = toponym.getLatitude();
                        double lon = toponym.getLongitude();
                        FunctionQuery fq = getFunction(distType, ghVS, power, latLon, lat, lon, radius);
                        tmp.add(fq, BooleanClause.Occur.SHOULD);
                    }
                    query = tmp;
                } else if (topos.size() == 1) {
                    Toponym curr = topos.get(0);
                    query = getFunction(distType, ghVS, power, latLon, curr.getLatitude(), curr.getLongitude(),
                            radius);
                }
            } catch (Exception e) {
                //TODO: deal with errors
            }
            query.setBoost(boost);
            return query;
        }

    };
}

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From source file:com.gogobot.DistanceParser.java

License:Apache License

private MultiValueSource parseSfield(FunctionQParser fp) throws SyntaxError {
    String sfield = fp.getParam(SpatialParams.FIELD);
    if (sfield == null)
        return null;
    SchemaField sf = fp.getReq().getSchema().getField(sfield);
    FieldType type = sf.getType();
    if (type instanceof AbstractSpatialFieldType) {
        AbstractSpatialFieldType asft = (AbstractSpatialFieldType) type;
        return new SpatialStrategyMultiValueSource(asft.getStrategy(sfield));
    }//from  ww w . j a  va2  s. c  om
    ValueSource vs = type.getValueSource(sf, fp);
    if (vs instanceof MultiValueSource) {
        return (MultiValueSource) vs;
    }
    throw new SyntaxError(
            "Spatial field must implement MultiValueSource or extend AbstractSpatialFieldType:" + sf);
}

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