queryFeatures does not return if query has no results

james-rae — Fri, 03 Jan 2014 18:43:34 GMT

featureLayer.queryFeatures appears to not execute the callback if there are no features that match the query.

I have modified the following sample to illustrate (JS API 3.8):
http://developers.arcgis.com/en/javascript/samples/fl_paging/

If one replaces the contents of function queryRecordsByPage with the following (obviously without the line numbers):

    1.  var query = new Query();     2.  //query.objectIds = pageInfo.objectIds.slice(begin, end);     3.  query.outFields = ["*"];     4.  query.geometry = featureLayer.fullExtent;     5.  //query.geometry = new esri.geometry.Extent(-1, -1, 1, 1, 4326);      6.  // Query for the records with the given object IDs and populate the grid     7.  featureLayer.queryFeatures(query, function (featureSet) {     8.    updateGrid(featureSet, pageNumber);     9.  });

- updateGrid (line 😎 gets called with the code as it is shown above. This is expected, as our query geometry has points within it.
- when I comment out line 4 and uncomment line 5, updateGrid (line 😎 doesn't get called at all (in this case, no points are within the custom extent).

Is this normal behaviour for featureLayer.queryFeatures? I was hoping the callback would trigger, returning an empty feature set (so my code can react to the "nothing within this extent" case).
Any feedback is appreciated. Thanks.

Re: queryFeatures does not return if query has no results

JonathanUihlein — Fri, 03 Jan 2014 20:51:14 GMT

Try this:

query.geometry = new esri.geometry.Extent(-1, -1, 1, 1, new esri.SpatialReference({wkid:4326}));

*edit

According to the documentation, the spatialReference property needs to be a spatialReference object, not a string or integer.

https://developers.arcgis.com/en/javascript/jsapi/extent.html

Re: queryFeatures does not return if query has no results

james-rae — Mon, 06 Jan 2014 11:20:16 GMT

Beauty. Thank you Jon.
I love it when the fix a one-line fix due to something dumb on our end!

topic queryFeatures does not return if query has no results in ArcGIS JavaScript Maps SDK Questions

queryFeatures does not return if query has no results

Re: queryFeatures does not return if query has no results

Re: queryFeatures does not return if query has no results