.setDefinitionExpression using geometry?

[JamesCrandall]

Probably multiple ways to handle this, but I need to set a definition expression on a polygon FeatureLayer using the intersection of another polygon FeatureLayer.  I had been simply using a WHERE clause on an attribute, but the requirement has changed to use the geometry from a different FeatureLayer.

Any help is appreciated.

What I have so far:

createFuncLocLayer: function () {
      this.funcLocLayer = new FeatureLayer(this.config.functionalLocationLayer);
      this.workplanBoundaryLayer.queryFeatures(this.queryWorkplanLayer(), lang.hitch(this, function (result) {
        var wpGeometry = geometryEngine.geodesicBuffer(result.features[0].geometry, -20, "meters")
        
        //How can I apply this.funcLocLayer.setDefinitionExpression to use the wpGeometry variable?

      }));‍‍‍‍‍‍‍‍

[RobertScheitlin__GISP]

James,

   I forgot the comma after the "load".

this.workplanBoundaryLayer.on("load", lang.hitch(this, function(){

[JamesCrandall]

I don't know how I missed that.

Thank you

[JamesCrandall]

Robert -- I'm marking as correct cause I don't doubt this is what I need to implement.  Still working thru a problem of "result" = undefined and causing an issue setting the wpGeometry var.  I'll see if what I'm doing wrong there.

def.then(lang.hitch(this, function(result){
                debugger
                if (result) {
                    var geom = result;
                    var wpGeometry = geometryEngine.geodesicBuffer(geom, -20, "meters");
                    var query = new Query();
                    query.outFields = ["*"];
                    query.returnGeometry = true;
                    query.outSpatialReference = this.map.spatialReference;
                    query.geometry = wpGeometry;
                    debugger
                    this.funcLocLayer.queryIds(query, lang.hitch(this, function (objectIds) {
                        var qStr = this.funcLocLayer.objectIdField + " IN(" + objectIds.join(',') + ")";
                        this.funcLocLayer.setDefinitionExpression(qStr);
                    }));
                }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

[JamesCrandall]

Robert,

Thanks again! 

I was struggling with making your solution/suggestion error-free and found the issue (pretty typical struggle for me, not sure how else to pick these out faster, I think I'm getting a bit better tho).  It finally makes it to qStr and I believe sets the definitionExpression as desired:

var geom = result;‍

Should be

var geom = result.geometry;‍

[RobertScheitlin__GISP]

James,

   Sorry about that. The returned value from the deferred was a graphic and you where needing a geometry.

[RichardReinicke]

Hi James,

I haven't tried this out but I think you have to use FeatureLayerView or execute a query on the FeatureLayer and create a layer for visualization from the results?

FeatureLayerView | API Reference | ArcGIS API for JavaScript 4.7 

var query = new Query({
   geometry: wpGeometry,
   spatialRelationship = "intersects"
});

// YOU CAN USE LAYERVIEW WHICH YOU CAN USE TO HOOK INTO LAYERS UPDATE EVENT

view.whenLayerView(this.funcLocLayer).then(function(lyrView){
  lyrView.watch("updating", function(val){
    if(!val){  // wait for the layer view to finish updating
      lyrView.queryFeatures(query).then(function(results){
        // Do additional stuff
      });
    }
  });
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍

// OR USE THE QUERY DIRECLY ON THE LAYER

this.funcLocLayer.queryFeatures(query).then(function(results){
  // Create the final layer and add to map or update an existing layer
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Let me know if this helps.