problem with query task

Question

Hi all! I´m trying to make a web aplication with JavaScript API. there is a dynamic map service in my Arcgis server, it I need for my work. I want to query one layer of map service. By click on map should be displayed the results (infomation about point object) in Infowindow and should result a geometry on the map. I see the map, if I execute it in browser. but by click on point symbol it shows no Infowindow and no geometry on the map. i think, it´s a swall problem, but I can´t find , where the problem is. Thanks, eba my code: QueryTask with value, results as an InfoWindow

HemingZhu · Answer

Hi lowgas, Thanks for the replay! I tried your code. But that does not display the attributes and geometry. And Firefox Firebug shows me no errors. I do not understand what the problem is. I saw many examples in internet. and I downloaded one of they and tried without the images. e.g. http://resources.esri.com/arcgisserver/apis/javascript/arcgis/index.cfm?fa=codeGalleryDetails&scriptID=16041. I just wanted to try with attrubutes and geometry. I published the file PhotoLocations.mxd to my arcgisserver as map service and used for javascript code. I think basically this shoud work. I see the map, but no infowindow with attributes as before. I wonder.... if this example works right with you, I pehaps have problem with the publishing of map service. QueryTask with geometry, results as an InfoWindow onHover containg image Hover over a camera icon to see image thumbnail and image description.

I looked at your code. It seems that queryTask is a local variable not a globel one. put it in your init function like this: var queryTask, query; function init() { var startExtent = new esri.geometry.Extent(-117.197, 34.035, -117.183, 34.045, new esri.SpatialReference({wkid:4326})); //create map var map = new esri.Map("mapDiv",{extent:startExtent}); //listen for when map is loaded and then add query functionality dojo.connect(map, "onLoad", initFunctionality); //create and add new layer var layer = new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"); map.addLayer(layer); var overlaymap=new esri.layers.ArcGISDynamicMapServiceLayer("http://myserver/ArcGIS/rest/services/PhotoLocations/MapServer"); map.addLayer(overlaymap); queryTask = new esri.tasks.QueryTask("http://myserver/ArcGIS/rest/services/PhotoLocations/MapServer/0"); }

timgogl · Answer

well, using firebug was not so much to see if there were errors (altho that is helpful too), but to see what is actually traced out when you use console.log.

if you are getting NO trace statements in firebugs console window, especially when you put this code inside your call back function
function showResults(featureSet) {
  //remove all graphics on the maps graphics layer
  map.graphics.clear();

//******* add this
  console.log(featureSet);
  console.log(featureSet.length);
  //*******

///all the rest of your code

if console.log(featureSet); does not print anything in firebug console window, then this function was never triggered.. which means there was a problem in the execute, in which case, the error call back should have fired.

ErdenebaatarBatbaatar · Answer

Hi lowgas, Thanks for the replay! I tried your code. But that does not display the attributes and geometry. And Firefox Firebug shows me no errors. I do not understand what the problem is. I saw many examples in internet. and I downloaded one of they and tried without the images. e.g. http://resources.esri.com/arcgisserver/apis/javascript/arcgis/index.cfm?fa=codeGalleryDetails&scriptID=16041. I just wanted to try with attrubutes and geometry. I published the file PhotoLocations.mxd to my arcgisserver as map service and used for javascript code. I think basically this shoud work. I see the map, but no infowindow with attributes as before. I wonder.... if this example works right with you, I pehaps have problem with the publishing of map service. QueryTask with geometry, results as an InfoWindow onHover containg image Hover over a camera icon to see image thumbnail and image description.