How to prevent selection of Polygon which is already selected (Spatial Query) in ArcGIS JS 3.xx

AlifShaikh — Sun, 12 Dec 2021 03:15:58 GMT

Hi,

Below is the code which is for spatial query.


var map;
 var resultFromquery = [];
 require(["esri/map", "esri/layers/ArcGISDynamicMapServiceLayer",
 "esri/layers/ImageParameters","esri/geometry/Extent","esri/InfoTemplate","esri/SpatialReference","esri/tasks/query","esri/tasks/QueryTask","esri/graphic","esri/tasks/FeatureSet","esri/symbols/Symbol", "dojo/domReady!"], 
 function(Map,ArcGISDynamicMapServiceLayer,ImageParameters,Extent,InfoTemplate,SpatialReference,query,QueryTask,graphic,FeatureSet,Symbol) 
 {
 map = new Map("map", {
 basemap: "topo", 
 center: [75.831,18.895], // longitude, latitude
 zoom: 10,
 //maxScale:8800
 });
 map.on("click", mapReady);
 var dynamicMapServiceLayer = new ArcGISDynamicMapServiceLayer("Mapservice");
 dynamicMapServiceLayer.setVisibleLayers([0]);
 map.addLayer(dynamicMapServiceLayer);
 infoTemplate = new esri.InfoTemplate("${BLDGNO}", "Locality: ${SUBLOCALITY}<br />StateName: ${STATENAME}<br />Pincode: ${PINCODE}");
 symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASHDOT, new dojo.Color([255,0,0]), 2), new dojo.Color([255,255,0,0.5]));
 }); 
 function mapReady(evt) 
 {
 queryTask = new esri.tasks.QueryTask("Mapservice");
 query = new esri.tasks.Query();
 query.returnGeometry = true;
 query.outFields = ["BLDGNO", "SUBLOCALITY", "STATENAME","CITYNAME","PINCODE"];
 query.geometry = evt.mapPoint;
 queryTask.execute(query, showResults);
}
 function showResults(featureSet) 
 {
 dojo.forEach(featureSet.features,function(feature)
 {
 var graphic = feature;
 resultFromquery.push(feature.attributes);
 graphic.setSymbol(symbol);
 graphic.setInfoTemplate(infoTemplate);
 map.graphics.add(graphic);
 });
 }
 document.getElementById('SubmitBtn').onclick = function myFunction() 
 { 
 
 try
 {
 var i;
 var BLDGNO ="";
 var PINCODE="";
 for (i=0;i<resultFromquery.length;i++)
 {
 BLDGNO = resultFromquery[i].BLDGNO;
 PINCODE = resultFromquery[i].PINCODE;
 console.log(BLDGNO , PINCODE);

 }
 }
 catch (err)
 {
 alert(err.message);
 }
 }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I wanted to know how to prevent (to show a alert or message) selecting the polygon which is already selected.

Thanks,

Re: How to prevent selection of Polygon which is already selected (Spatial Query) in ArcGIS JS 3.xx

RobertScheitlin__GISP — Tue, 30 Jul 2019 12:58:50 GMT

AS,

You would have to get an array of ObjectIds that are already selected and

Add them as a definition expression to your Query (i.e. "NOT IN(2 ,45, 87)"). This would prevent them from being re-selected.
Or loop through your query results and alert if an ObjectId matches your array of pre-existing selected ObjectIds

topic Re: How to prevent selection of Polygon which is already selected (Spatial Query) in ArcGIS JS 3.xx in ArcGIS JavaScript Maps SDK Questions

How to prevent selection of Polygon which is already selected (Spatial Query) in ArcGIS JS 3.xx

Re: How to prevent selection of Polygon which is already selected (Spatial Query) in ArcGIS JS 3.xx