public SearchResponse Search(SearchRequest request)
{
var locationSearchRequest = new LocationSearchRequest
{
Coordinate = request.Coordinate,
MaxDistance = request.MaxDistance,
MaxResults = request.MaxResults
};
var results = _locationSearchService.Search(locationSearchRequest);
return new SearchResponse { Results = results.Results };
}
public LocationSearchResults Search(LocationSearchRequest search)
{
// TODO: validate search parameter
var query = new KnnQuery
{
Coordinate = search.Coordinate,
MaxDistance = search.MaxDistance,
MaxResults = search.MaxResults
};
// use spatial index to reduce data set
var knnQueryResult = _spatialIndex.KnnSearch(query);
if (!knnQueryResult.Results.Any())
return LocationSearchResults.ZeroResults();
// now load entities from database
var ids = knnQueryResult.Results.Select(i => i.Document.Id).ToArray();
var locations = _locationRepository.FindIn(ids);
// build return results by joining Location and Distance
var results = new List<LocationSearchResultItem>();
var locationsIndex = locations.ToDictionary(l => l.Id);
foreach (var item in knnQueryResult.Results)
{
if (locationsIndex.ContainsKey(item.Document.Id))
{
var location = locationsIndex[item.Document.Id];
results.Add(new LocationSearchResultItem(location, item.Distance));
}
}
return LocationSearchResults.Success(results);
}