Query task with setSelection and Zooming

Question

Hi, I'm wondering if there is another approach I can take to performing a Query, passing the result to setSelection so I can ultimately zoom to the selected features. What I have now works, but my "problem" with this approach is I need to return the geometry in the Query. If I do not return the the geometry, getSelectedFeatures won't return features with geometry because the query result did not have any. I was hoping to avoid asking for geometry because some rather large and complex polygons can be queried and the delay is noticeable with those queries. Any other ways I could tackle this? For reference, here is the relevant code: //press button, do query. _performQuery: function(id){ this.layer = this.map.getLayer(id); var query = new Query(); query.where = this.sqlquery.value; query.outFields = ["*"]; query.returnGeometry = true; new QueryTask(this.url).execute(query, lang.hitch(this, function(results){ this.selectionManager.setSelection(this.layer, results.features).then(lang.hitch(this, function(){ //some button stuff })); }),lang.hitch(this,function(error){ var quoteMsg = ""; if (this.fieldSelect[this.fieldSelect.selectedIndex].innerHTML.indexOf("number") > 0 && !this.removeQuotes.checked){ quoteMsg = " Removing the quotes (') may fix the query."; } new Message({ message: "There was a problem selecting." + quoteMsg }); console.log(error); })); }, //press another button, zoom to selected features _zoom:function(features){ var features = this.layer.getSelectedFeatures(); try { //https://community.esri.com/thread/193429-zoom-to-selected if (this.layer.geometryType === "esriGeometryPoint" && features.length === 1){ // single point var p = features[0].geometry; if (this.map.spatialReference.wkid !== p.spatialReference.wkid){ p = projection.project(p, this.mSR); } var maxZoom = this.map.getMaxZoom(); this.map.centerAndZoom(p, maxZoom- 1); } else { //multiple points and lines and polys var geom = this.selectionManager.getUnionGeometryBySelectedFeatures(this.layer); var ext = geom.getExtent().expand(1.2); if (this.map.spatialReference.wkid !== ext.spatialReference.wkid){ ext = projection.project(ext, this.mSR); } this.selectionManager.map.setExtent(ext, true); } } catch(err){ new Message({ message: "Failed to zoom to selection. Tried to zoom to " +features.length+ " features." }); console.log(err); } },‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Anonymous User · Accepted Answer

I think I can self answer this. Instead of doing a true QueryTask, I can just use selectFeatures off the layer. It seems to work equally well for both Map and FeatureServices _performQuery: function(){ var query = new Query(); query.where = this.sqlquery.value; query.outFields = ["*"]; this.layer.selectFeatures(query).then(lang.hitch(this, function(result){ this.selectionManager.setSelection(this.layer, result).then(lang.hitch(this, function(){ // some button stuff })); })); } ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Reference: https://community.esri.com/message/759029-not-getting-any-selection-results-jsapi-321-with-wabuilder-25