OK sounds good - I get that I am pushing the limits of the app but an invert selection option is required for the nature of the application (will be used to highlight deficiencies in monitoring programs etc) since query's spatial relationship does not include things like "does not contain"...I assume using the objectIDs to compare would reduce the size of the JSON string? Instead of the line " if(features[x1].geometry.toString() == selected[y1].geometry.toString())" I tried to use (features[x1].attributes == selected[y1].attributes) and (features[x1].id == selected[y1].id) and neither worked...I attached my code below - is there any reason you can see why neither of these are working? Thanks so much Robert for your help!protected function InvertSelBtn_clickHandler(event:MouseEvent):void{
//reset all three arrays
features = [];
selected = [];
notSelected = [];
this.cursorManager.setBusyCursor();
//add features that are currently selected to array selected, then clear selection
var i:Number = new Number;
for(i=0;i<targetLayer.selectedFeatures.length;i++){
var selFeature:Graphic = targetLayer.selectedFeatures;
selected.push(selFeature);
}
targetLayer.clearSelection();
//this selects all features
var query:Query = new Query;
query.where = "1=1";
//this.cursorManager.setBusyCursor();
targetLayer.selectFeatures(query,"new",new AsyncResponder(onInvertSelectAllResult, onInvertSelectAllFault));
}
//if select all during invert fails
private function onInvertSelectAllFault(info:Array, token:FeatureLayer = null):void{
Alert.show("Error During Invert Selection.");
}
//if select all during invert is successful - continue with invert process
private function onInvertSelectAllResult(info:Array, token:FeatureLayer = null):void{
var marker:Boolean = false;
//upon result of selecting all features, add all features from targetLayer to array features, then clear selection
var i:Number = new Number;
for(i=0;i<targetLayer.selectedFeatures.length;i++){
var feature:Graphic = targetLayer.selectedFeatures;
features.push(feature);
}
targetLayer.clearSelection();
//nested for loop to iterate through features (run once for each feature in targetLayer)
//then iterate through selected (run once for each feature in selFeatures)
//if their objects match, marker set to true - if at the end of the inside loop marker is still false
//no match was found and the feature is loaded into notSelected
var x1:Number = new Number;
var y1:Number = new Number;
for(x1=0;x1<features.length;x1++){
marker=false;
for(y1=0;y1<selected.length;y1++){
//if there is ever a match, mark boolean as true, and features wont be added to notSelected
//i will have to change this to work with line, poly -for now points is fine
if(features[x1].geometry.toString() == selected[y1].geometry.toString()){
//this lets us know that there was a match and nothing should be added to notSelected
marker=true;
}
}
//if match wasnt found in inside for loop, then the feature wasnt selected and will be added to notSelected
if(marker===false){
notSelected.push(features[x1]);
}
}
//pass the array of unselected features into featSet, then pass to unionGeom to get a geometry back
var featSet:FeatureSet = new FeatureSet(notSelected);
var unionGeom:Geometry = SelectionWidgetUtil.unionGeoms(featSet);
//now run query with unionGeom
var query1:Query = new Query;
query1.geometry=unionGeom;
targetLayer.selectFeatures(query1,"new",new AsyncResponder(onInvertResult, onInvertFault, targetLayer));
}
//on invert selection result
private function onInvertResult(info:Array, token:FeatureLayer = null):void
{
this.cursorManager.removeBusyCursor();
//this makes the selection results page be displayed upon selection
/* var e:Event = new SelectionFeatureLayerEvent(SelectionFeatureLayerEvent.SHOW_RESULTS, null);
dispatchEvent(e); */
}
//on invert selection fault
private function onInvertFault(info:Object, token:Object = null):void
{
this.cursorManager.removeBusyCursor();
Alert.show("Could not complete Selection. Please try again.\n" + info.toString(),
"Selection Error", Alert.OK);
}
