//create a term query to search against all documents
Query tq = new TermQuery(new Term("metafile", "doc"));
FieldScoreQuery fsQuery = new FieldScoreQuery("geo_distance", Type.FLOAT);
CustomScoreQuery customScore = new CustomScoreQuery(dq.getQuery(tq),fsQuery){
@Override
protected CustomScoreProvider getCustomScoreProvider(IndexReader reader) {
return new CustomScoreProvider(reader) {
@Override // TODO: broken, as reader is not used!
public float customScore(int doc, float subQueryScore, float valSrcScore){
if (VERBOSE) System.out.println(doc);
if (dq.distanceFilter.getDistance(doc) == null)
return 0;
double distance = dq.distanceFilter.getDistance(doc);
// boost score shouldn't exceed 1
if (distance < 1.0d)
distance = 1.0d;
//boost by distance is invertly proportional to
// to distance from center point to location
float score = (float) ((miles - distance) / miles );
return score * subQueryScore;
}
};
}
};
// Create a distance sort
// As the radius filter has performed the distance calculations
// already, pass in the filter to reuse the results.
//
DistanceFieldComparatorSource dsort = new DistanceFieldComparatorSource(dq.distanceFilter);
Sort sort = new Sort(new SortField("foo", dsort,false));
// Perform the search, using the term query, the serial chain filter, and the
// distance sort
TopDocs hits = searcher.search(customScore.createWeight(searcher),null, 1000, sort);
int results = hits.totalHits;
ScoreDoc[] scoreDocs = hits.scoreDocs;
// Get a list of distances
Map<Integer,Double> distances = dq.distanceFilter.getDistances();