How can I query for objects within a specified distance in my geolocated objects?

[moshiur_rahman]

Suppose you want to find the pizza shops within a specified distance from your home. You can do this easily by using a GeoDistance API which query for the geolocated objects within a specified circle.

Following code snippet shows how to perform this.

    try {
        // bucket where the shop data stored.
        KiiBucket bucket = Kii.bucket("YOUR_BUCKET");
        // location of your home
        GeoPoint home = new GeoPoint(_LATITUDE_, _LONGITUDE_);
        // assume shop location is saved as "location" key.
        // clause to find shops within the 4KM(4000 meters) of your home.
        KiiClause clause = KiiClause.geoDistance("location", home, 4000,
                "distance_to_home");
        KiiQuery query = new KiiQuery(clause);
        // sort by ascending order
        query.sortByAsc("_calculated.distance_to_home");
        KiiQueryResult<KiiObject> result = bucket.query(query);
        // list of shops within specified distance
        List<KiiObject> shops = result.getResult();
        // find the nearest shop and the distance from your home
        KiiObject shop = shops.get(0);
        double distance = shop.getJSONObject("_calculated").getDouble(
                "distance_to_home");
    } catch (IOException ioe) {
        // check fail reason
    } catch (AppException e) {
        // check fail reason.
    } catch (JSONException jse) {
        // check fail reason.
    }

[goldboy8x]

Hi moshiur_rahman.
i also want to find the restaurants from my current location and this is my Javascript code.

var bucket = Kii.bucketWithName("ListData");
var my_location = KiiGeoPoint.geoPoint(10.782973, 106.695890);
var clause1 = KiiClause.geoDistance('LATLONG', my_location, 4000, null);
var queryObject = KiiQuery.queryWithClause(clause1);
bucket.executeQuery(queryObject, {
       success: function(queryPerformed, resultSet) {
             var obj = resultSet[0];
             console.log(obj.get("LATLONG"));
       }
});

with LATLONG value in my bucket "ListData" is
{"LATLONG": "10.780062,106.69299"}
{"LATLONG": "10.784062,106.69799"}
{"LATLONG": "10.783062,106.69799"}
{"LATLONG": "10.782662,106.69699"}

but when i run it on the browser, i get resultSet = [ ]
Can you explain me why it don't have result data and how to get result with that LATLONG value ?
Thank you so much.

[nfukuzaki]

Hi goldboy8x,

How did you create test data in the ListData bucket?
GeoPoint must be following format.

{"LATLONG":{"_type":"point","lat":10.780062,"lon":106.69299}}
{"LATLONG":{"_type":"point","lat":10.784062,"lon":106.69799}}
{"LATLONG":{"_type":"point","lat":10.783062,"lon":106.69799}}
{"LATLONG":{"_type":"point","lat":10.782662,"lon":106.69699}}

Best regards,

[goldboy8x]

I fixed it and run OK. thanks for your support.