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Identify and Limit Number of Services Layers and Fields

bflodine

Hello, I am using Robert Scheitlin's version 1.3 custom identify tool and I have 2 base map services and 1 live map service being used in my flex project. When I use the identify tool it will select features from all 3 map services. I would like to customize it to just identify on 2 layers in the one live map service. Any suggestions would be appreciated.

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RobertScheitlin__GISP

Brett,

I created about a half a dozen different IdentifyWidget version (probably not the best idea :eek: ). Now I am struggling to know which source code to go to when people are having issues or need a minor tweak. It would probally be best for you to attach the version you are working with and I will take a look. I am not use I made one yet that allows multiple layers to be specified. I know I have a version that allows you to limit the identify to one specific layer and which fields (that is the one I use).

bflodine

Hello Robert,
I know how many versions because I searched through all the threads looking for a solution! I use another one of them for a couple of services that identify a single layer both with and without the hyperlink feature. Your source code is great, thanks so much for all of the information you have posted it has proved invaluable.......I have attached the xml and mxml files for your review.

Brett

Brett Flodine
GIS Manager
City of Hartford

xml_mxml.zip

RobertScheitlin__GISP

Brett,

Try this function replacement.

//identify features
   private function identifyFeatures():void
   {
    var identifyParams : IdentifyParameters = new IdentifyParameters();
                identifyParams.returnGeometry = false;
                identifyParams.tolerance = identifyTolerance;
                identifyParams.geometry = identifyPoint;
                identifyParams.width = map.width;
                identifyParams.height = map.height;
                identifyParams.mapExtent = map.extent;
                identifyParams.spatialReference = map.spatialReference;
                
                for (var i:Number = map.layerIds.length -1; i >= 0; i--)
    {
     identifyParams.layerOption = identifyLayerOption;
     identifyParams.layerIds = null
     var layer:Layer = map.getLayer(map.layerIds);
     var url:String;
     if (layer.visible)
     {
                  if (layer is ArcGISDynamicMapServiceLayer)
                  {
                   var dynamicLayer:ArcGISDynamicMapServiceLayer = layer as ArcGISDynamicMapServiceLayer;
                   url = dynamicLayer.url;
                   if(identifyLayerOption == "visible")
                   {
                    identifyParams.layerIds = dynamicLayer.visibleLayers.source;
                    identifyParams.layerOption = "all";
                    if(dynamicLayer.visible == false)
                     url="";
                   }
                   //This is the new code
                   //Change Parcel Data to the map service name of yours you want to use
                   //and change 67,68 to the layer numbers of yours
                   //in the else url=""; is what makes it ignore all other map services
                   //if there name is not (in my example) Parcel Data.
                   if (layer.id == "Parcel Data")
                   {
                    identifyParams.layerIds = [67,68];
                   } else {
                    identifyParams.layerIds = null;
                    url="";
                   }
                  }
                  else if (layer is ArcGISTiledMapServiceLayer)
                  {
                   var tiledLayer:ArcGISTiledMapServiceLayer = layer as ArcGISTiledMapServiceLayer;
                   url = tiledLayer.url;
                   if(identifyLayerOption == "visible")
                   {
                    if(tiledLayer.visible == false)
                     url="";
                   }
                  }
         
                  if(url)
                  {
                   var identifyTask:IdentifyTask = new IdentifyTask(url);
                   identifyTask.addEventListener(IdentifyEvent.IDENTIFY_COMPLETE, onResult);
                   identifyTask.addEventListener(FaultEvent.FAULT, onFault);
                   identifyTask.execute(identifyParams);
        showMessage(loadingLabel, true); 
       showStateResults(null);   
                  }
         }
                }
   }

bflodine

Robert, I replaced the code and changed the layer numbers and the map service name. I removed any group layers in my map service . I am getting the following error... Identify operation not supported on this service.

RobertScheitlin__GISP

Brett,

Can you post what you changed the code to? Did you can the name of the map service to the label in the config.xml?

bflodine

Well Robert I did that at first and my basemap stopped displaying........so I had changed it back to the map service name in the rest service properties.......after that I had stopped and restarted my map service and cleared my map cache. SO when you sent your post I changed it back to the name in the config.xml and everything works great.

thank you very much for your help!

SpencerLace

Would it be possible to do the same multi-layer, specific fields identify as your sample single-layer, specific fields, using only the XML to pass the fields? I was think of trying tags such as
<layer>SLO</layer>
<fields>message</fields>
<layer2>FPZ Overlay</layer2>
<fields>message</fields>
<layer3>ECPZ Overlay</layer3>
<fields>message</fields>

Below is the "latest" code you posted on point:

//identify features
   private function identifyFeatures():void
   {
    var identifyParams : IdentifyParameters = new IdentifyParameters();
                identifyParams.returnGeometry = false;
                identifyParams.tolerance = identifyTolerance;
                identifyParams.geometry = identifyPoint;
                identifyParams.width = map.width;
                identifyParams.height = map.height;
                identifyParams.mapExtent = map.extent;
                identifyParams.spatialReference = map.spatialReference;
                
                for (var i:Number = map.layerIds.length -1; i >= 0; i--)
    {
     identifyParams.layerOption = identifyLayerOption;
     identifyParams.layerIds = null
     var layer:Layer = map.getLayer(map.layerIds);
     var url:String;
     if (layer.visible)
     {
                  if (layer is ArcGISDynamicMapServiceLayer)
                  {
                   var dynamicLayer:ArcGISDynamicMapServiceLayer = layer as ArcGISDynamicMapServiceLayer;
                   url = dynamicLayer.url;
                   if(identifyLayerOption == "visible")
                   {
                    identifyParams.layerIds = dynamicLayer.visibleLayers.source;
                    identifyParams.layerOption = "all";
                    if(dynamicLayer.visible == false)
                     url="";
                   }
                   //This is the new code
                   //Change Parcel Data to the map service name of yours you want to use
                   //and change 67,68 to the layer numbers of yours
                   //in the else url=""; is what makes it ignore all other map services
                   //if there name is not (in my example) Parcel Data.
                   if (layer.id == "Parcel Data")
                   {
                    identifyParams.layerIds = [67,68];
                   } else {
                    identifyParams.layerIds = null;
                    url="";
                   }
                  }
                  else if (layer is ArcGISTiledMapServiceLayer)
                  {
                   var tiledLayer:ArcGISTiledMapServiceLayer = layer as ArcGISTiledMapServiceLayer;
                   url = tiledLayer.url;
                   if(identifyLayerOption == "visible")
                   {
                    if(tiledLayer.visible == false)
                     url="";
                   }
                  }
         
                  if(url)
                  {
                   var identifyTask:IdentifyTask = new IdentifyTask(url);
                   identifyTask.addEventListener(IdentifyEvent.IDENTIFY_COMPLETE, onResult);
                   identifyTask.addEventListener(FaultEvent.FAULT, onFault);
                   identifyTask.execute(identifyParams);
        showMessage(loadingLabel, true); 
       showStateResults(null);   
                  }
         }
                }
   }

bflodine

Spencer,

The line in the mxml file that is
identifyParams.layerIds = [67,68];
is giving the layers that you are identifying. my identify works on two seperate layers but I could have included as many as I wanted. If you look at the code Robert provided me it also includes a hyperlink field for each layer as well.

Brett

bflodine

Spencer you cant use just the xml file you also need to modify the mxml.file as well

SpencerLace

Thanks, I am changing the mxml, but the issue for me is the fields that were nicely specified in Robert's older example since the tool only worked on one service, the layer and its fields could be contained in the XML tags.
Now, we have a layer.id that is giving a service to use and the layerIds = [0,1] for the layers in the map, but I don't get to say which fields. Of course its just so I don't have to disable fields in the layers of the service itself. I suppose I need one more parameter. Or am I confused?

bflodine

Spencer,

The layer id's in the mxml file specify which layers to identify but then you need to edit the xml file to specify the layers and field names to show in the identify for the layers you have selected in the mxml file. if it would help I could upload my final xml and mxml files.

Brett

SpencerLace

That makes sense - I had removed the xml stuff when I saw this newer function. And yes, it would be great to see your final code. Thank you!

bflodine

Spencer,

I have added my xml and mxml code to this post. Let me know if you have any questions.

Brett

IdentifyWidget.zip

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