private static QueryContainer CreateGeoDistanceFilter(GeoDistanceFilter geoDistanceFilter)
{
return(new GeoDistanceQuery
{
Field = ElasticSearchHelper.ToElasticFieldName(geoDistanceFilter.FieldName),
Location = geoDistanceFilter.Location.ToGeoLocation(),
Distance = new Distance(geoDistanceFilter.Distance, DistanceUnit.Kilometers),
});
}
private static string CreateGeoDistanceFilter(GeoDistanceFilter geoDistanceFilter, IList <Field> availableFields)
{
string result;
var availableField = availableFields.Get(geoDistanceFilter.FieldName);
if (availableField != null)
{
var distance = AzureSearchHelper.GetGeoDistanceExpression(availableField.Name, geoDistanceFilter.Location);
result = string.Format(CultureInfo.InvariantCulture, "{0} le {1}", distance, geoDistanceFilter.Distance);
}
else
{
result = AzureSearchHelper.NonExistentFieldFilter;
}
return(result);
}
private static Filter CreateGeoDistanceFilter(GeoDistanceFilter geoDistanceFilter)
{
Filter result = null;
if (geoDistanceFilter?.FieldName != null && geoDistanceFilter.Location != null)
{
var spatialContext = SpatialContext.GEO;
var distance = DistanceUtils.Dist2Degrees(geoDistanceFilter.Distance, DistanceUtils.EARTH_MEAN_RADIUS_KM);
var searchArea = spatialContext.MakeCircle(geoDistanceFilter.Location.Longitude, geoDistanceFilter.Location.Latitude, distance);
var spatialArgs = new SpatialArgs(SpatialOperation.Intersects, searchArea);
var fieldName = LuceneSearchHelper.ToLuceneFieldName(geoDistanceFilter.FieldName);
var strategy = new PointVectorStrategy(spatialContext, fieldName);
result = strategy.MakeFilter(spatialArgs);
}
return(result);
}
