package org.apache.solr.search;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.search.Query;
import org.apache.lucene.spatial.DistanceUtils;
import org.apache.lucene.spatial.geometry.DistanceUnits;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.params.SpatialParams;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.schema.FieldType;
import org.apache.solr.schema.SchemaField;
import org.apache.solr.schema.SpatialQueryable;
/**
* @see SpatialFilterQParserPlugin
*/
public class SpatialFilterQParser extends QParser {
boolean bbox; // do bounding box only
public SpatialFilterQParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req, boolean bbox) {
super(qstr, localParams, params, req);
this.bbox = bbox;
}
@Override
public Query parse() throws ParseException {
//if more than one, we need to treat them as a point...
//TODO: Should we accept multiple fields
String[] fields = localParams.getParams("f");
if (fields == null || fields.length == 0) {
String field = getParam(SpatialParams.FIELD);
if (field == null)
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, " missing sfield for spatial request");
fields = new String[] {field};
}
String pointStr = getParam(SpatialParams.POINT);
if (pointStr == null) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, SpatialParams.POINT + " missing.");
}
double dist = -1;
String distS = getParam(SpatialParams.DISTANCE);
if (distS != null) dist = Double.parseDouble(distS);
if (dist < 0) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, SpatialParams.DISTANCE + " must be >= 0");
}
String measStr = localParams.get(SpatialParams.MEASURE);
//TODO: Need to do something with Measures
Query result = null;
//fields is valid at this point
if (fields.length == 1) {
SchemaField sf = req.getSchema().getField(fields[0]);
FieldType type = sf.getType();
if (type instanceof SpatialQueryable) {
double radius = localParams.getDouble(SpatialParams.SPHERE_RADIUS, DistanceUtils.EARTH_MEAN_RADIUS_KM);
SpatialOptions opts = new SpatialOptions(pointStr, dist, sf, measStr, radius, DistanceUnits.KILOMETERS);
opts.bbox = bbox;
result = ((SpatialQueryable)type).createSpatialQuery(this, opts);
} else {
throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "The field " + fields[0]
+ " does not support spatial filtering");
}
} else {// fields.length > 1
//TODO: Not sure about this just yet, is there a way to delegate, or do we just have a helper class?
//Seems like we could just use FunctionQuery, but then what about scoring
/*List<ValueSource> sources = new ArrayList<ValueSource>(fields.length);
for (String field : fields) {
SchemaField sf = schema.getField(field);
sources.add(sf.getType().getValueSource(sf, this));
}
MultiValueSource vs = new VectorValueSource(sources);
ValueSourceRangeFilter rf = new ValueSourceRangeFilter(vs, "0", String.valueOf(dist), true, true);
result = new SolrConstantScoreQuery(rf);*/
}
return result;
}
}