Davide,
Yes you can use existing layerDefinitions and just append them to your query as I demonstrate in this sample.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:esri="http://www.esri.com/2008/ags"
pageTitle="Example - adding a layerDefinition to a query">
<esri:QueryTask id="queryTask"
showBusyCursor="true"
url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/5" />
<esri:Query id="query" returnGeometry="true" outSpatialReference="{map.spatialReference}">
<esri:outFields>
<mx:String>*</mx:String>
</esri:outFields>
</esri:Query>
<mx:Script>
<![CDATA[
private function execQuery():void
{
//dyn.layerDefinitions[5] number five is the states layer that we are using in the queryTask.
query.where = "UPPER(STATE_NAME) = '" + txtInput.text.toUpperCase() + "' AND " + dyn.layerDefinitions[5];
queryTask.execute(query);
}
]]>
</mx:Script>
<mx:HBox width="100%" height="28" backgroundAlpha="1" backgroundColor="#B6B7C0"
verticalAlign="middle" paddingLeft="10" paddingRight="10" borderStyle="solid" borderThickness="1">
<mx:Label text="Query with definition expression" color="#000000"/>
<mx:TextInput id="txtInput" text="Mississippi" enter="execQuery()" color="#000000"/>
<!-- Use Spacer to push Button control to the right. -->
<mx:Spacer width="100%"/>
<mx:Button label="Search" click="execQuery()" color="#000000"/>
</mx:HBox>
<esri:Map id="map">
<esri:extent>
<esri:Extent xmin="-150" ymin="5" xmax="-50" ymax="68">
<esri:SpatialReference wkid="4326"/>
</esri:Extent>
</esri:extent>
<esri:ArcGISTiledMapServiceLayer
url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
<esri:ArcGISDynamicMapServiceLayer id="dyn"
url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer">
<esri:layerDefinitions>
<!-- Layers in the order 0..x of the map service -->
<mx:Array>
<mx:String></mx:String> <!-- Census block points -->
<mx:String></mx:String> <!-- Census block groups -->
<mx:String></mx:String> <!-- Counties -->
<mx:String><![CDATA[ AGE_UNDER5 + AGE_5_17 > AGE_50_64 + AGE_65_UP ]]></mx:String> <!-- Coarse Counties -->
<mx:String><![CDATA[ AGE_UNDER5 + AGE_5_17 > AGE_50_64 + AGE_65_UP ]]></mx:String> <!-- Detailed Counties -->
<mx:String><![CDATA[ AGE_UNDER5 + AGE_5_17 > AGE_50_64 + AGE_65_UP ]]></mx:String> <!-- States -->
</mx:Array>
</esri:layerDefinitions>
</esri:ArcGISDynamicMapServiceLayer>
<esri:GraphicsLayer id="myGraphicsLayer" graphicProvider="{queryTask.executeLastResult.features}"/>
</esri:Map>
</mx:Application>
Thanks so much Robert...but where can I put this if I use Graphic Search in the following code?private function queryFeaturesGraphical(geom:Geometry):void
{
var i:Number = cboLayerGraphical.selectedIndex;
var querySpatialRel:String = "esriSpatialRelIntersects";
queryLayer = configSearchGraphical.url;
queryGeom = geom;
queryFields = configSearchGraphical.fields;
queryTitleField = configSearchGraphical.titlefield;
queryLinkField = configSearchGraphical.linkfield;
if (queryLayer)
{
var queryTask:QueryTask = new QueryTask(queryLayer);
var query:Query = new Query();
query.geometry = queryGeom;
query.outFields = queryFields.split(",");
query.returnGeometry = true;
query.spatialRelationship = querySpatialRel;
query.outSpatialReference = map.spatialReference;
queryTask.execute(query, new AsyncResponder(onResult, onFault));
showMessage(loadingLabel, true);
showStateResults(null);
// on result
function onResult(featureSet:FeatureSet, token:Object = null):void
{
try
{
var recAC:ArrayCollection = createRecordData(featureSet,"");
addSharedData(widgetTitle, recAC);
wRepeater.dataProvider = recAC;
showMessage(selectionLabel + " " + featureSet.features.length, false);
//Davide
}
catch (error:Error)
{
showMessage(error.message, false);
}
}
//on fault
function onFault(info:Object, token:Object = null) : void
{
showMessage(info.toString(), false);
}
}
}
