Searching a feature id in multiple feature classes

ab1 — Tue, 16 Apr 2013 16:23:23 GMT

Hello,

I'd like to look for all features, existing in all feature classes (located on the server side), that have an id equal to myId.

I'm using FindTask to do that, but it doesn't return anything. It is supposed to return one feature!

Is there a way to do that without using QueryTasks on all feature classes?

Thanks 🙂

Re: Searching a feature id in multiple feature classes

RhettZufelt — Tue, 16 Apr 2013 23:47:57 GMT

In version 3.1 or 3.2 the headercontroller widget has the single line search/locator (seach box in upper right next to about) that can be configured to search multiple layers and fields.

http://resources.arcgis.com/en/help/flex-viewer/concepts/index.html#/Header_Controller_widget_tags/01m30000000n000000/

R_

Re: Searching a feature id in multiple feature classes

ab1 — Wed, 17 Apr 2013 07:39:07 GMT

Rhett,

Thank you for the answer. But I'm not using Flex Viewer. I'm developing a Flex Web application with the ArcGIS Flex API.

Regards.

Re: Searching a feature id in multiple feature classes

IvanBespalov — Wed, 17 Apr 2013 09:36:14 GMT

in "Find features in Map Layers" example used FindTask.
Set FindParameters -> searchFields="[your id field name]".

<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"       xmlns:s="library://ns.adobe.com/flex/spark"       xmlns:mx="library://ns.adobe.com/flex/mx"       xmlns:esri="http://www.esri.com/2008/ags"       pageTitle="Find features in Map Layers">    <s:layout>   <s:VerticalLayout horizontalAlign="center"/>  </s:layout>    <fx:Script>   <![CDATA[    import com.esri.ags.Graphic;    import com.esri.ags.events.FindEvent;    import com.esri.ags.geometry.Geometry;        private function doFind():void    {     findTask.execute(myFindParams);    }        private function executeCompleteHandler(event:FindEvent):void    {     myGraphicsLayer.clear();     var graphic:Graphic;     resultSummary.text = "Found " + event.findResults.length + " results.";     var resultCount:int = event.findResults.length;     for (var i:Number = 0; i < resultCount; i++)     {      graphic = event.findResults.feature;      graphic.toolTip = event.findResults.foundFieldName + ": " + event.findResults.value;            switch (graphic.geometry.type)      {       case Geometry.MAPPOINT:       {        graphic.symbol = smsFind;        break;       }       case Geometry.POLYLINE:       {        graphic.symbol = slsFind;        break;       }       case Geometry.POLYGON:       {        graphic.symbol = sfsFind;        break;       }      }      myGraphicsLayer.add(graphic);     }    }   ]]>  </fx:Script>    <fx:Declarations>   <!-- Symbol for Find Result as Polyline -->   <esri:SimpleLineSymbol id="slsFind"           width="3"           alpha="0.9"           color="0xFFFF00"           style="solid"/>      <!-- Symbol for Find Result as Point -->   <esri:SimpleMarkerSymbol id="smsFind"          alpha="0.9"          color="0xFFFF00"          size="11"          style="square">    <esri:SimpleLineSymbol color="0x000000"/>   </esri:SimpleMarkerSymbol>      <!-- Symbol for Find Result as Polygon -->   <esri:SimpleFillSymbol id="sfsFind"           alpha="0.7"           color="0xFFFF00"/>      <!-- Find Task -->   <esri:FindTask id="findTask"         executeComplete="executeCompleteHandler(event)"         url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer"/>   <esri:FindParameters id="myFindParams"         contains="true"         layerIds="[0,1,2]"         outSpatialReference="{map.spatialReference}"         returnGeometry="true"         searchFields="[FID]"         searchText="{fText.text}"/>  </fx:Declarations>    <s:BorderContainer width="100%" height="40"         backgroundColor="0xDDDDFF">   <s:layout>    <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>   </s:layout>   <s:Label text="Search for FID:"/>   <s:TextInput id="fText"       enter="doFind()"       maxWidth="400"       text="0"/>   <s:Button click="doFind()" label="Find"/>  </s:BorderContainer>    <s:Label id="resultSummary" height="15"/>    <mx:VDividedBox width="100%" height="100%">   <esri:Map id="map">    <esri:extent>     <esri:Extent xmin="-126" ymin="24" xmax="-67" ymax="50">      <esri:SpatialReference wkid="4326"/>     </esri:Extent>    </esri:extent>    <esri:ArcGISDynamicMapServiceLayer url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer"/>    <esri:GraphicsLayer id="myGraphicsLayer"/>   </esri:Map>   <mx:DataGrid width="100%" height="40%"       dataProvider="{findTask.executeLastResult}">    <mx:columns>     <mx:DataGridColumn width="70"            dataField="layerId"            headerText="Layer ID"/>     <mx:DataGridColumn dataField="layerName" headerText="Layer Name"/>     <mx:DataGridColumn dataField="foundFieldName" headerText="Found Field Name"/>     <mx:DataGridColumn dataField="value" headerText="Found Field Value"/>    </mx:columns>   </mx:DataGrid>  </mx:VDividedBox>   </s:Application>

P.S. SDK 4.6, ArcGIS API for FLEX 3.2

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