topic Re: Definition Query is not working in ArcGIS API for Flex Questions

Definition Query is not working

FaisalBukhari — Fri, 11 Jun 2010 13:16:17 GMT

Hi

Definition query is not working no error nut map is not refresh

here is code

var dynLay:ArcGISDynamicMapServiceLayer = myMap.getLayer("Region") as ArcGISDynamicMapServiceLayer;

var layerDefArr:Array=new Array();

var qry:String= new String();
qry="OBJECTID=1";
layerDefArr[0] = qry;

dynLay.layerDefinitions = layerDefArr;

dynLay.refresh();

any idea Thanks in Advance

Re: Definition Query is not working

RobertScheitlin__GISP — Sat, 11 Dec 2021 22:52:02 GMT

Faisal,

The definition query array needs to have a query string for each layer in the map service even if the query string is just an empty string. Here is a working example. Wait for the states and counties to draw and when you click the button the only state that will draw it's boundary is Washington.

<?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"
    layout="absolute"
    styleName="plain"
    pageTitle="Definition Query">

    <mx:Script>
        <![CDATA[
            
            private function test():void
            {
             var dynLay:ArcGISDynamicMapServiceLayer = myMap.getLayer("Region") as ArcGISDynamicMapServiceLayer;

    var layerDefArr:Array=new Array();
    
    var qry:String= new String();
    qry="OBJECTID=1";
    layerDefArr[0] = "";
    layerDefArr[1] = "";
    layerDefArr[2] = "";
    layerDefArr[3] = "";
    layerDefArr[4] = "";
    layerDefArr[5] = qry;
    
    dynLay.layerDefinitions = layerDefArr;
    
    dynLay.refresh();
            }
        ]]>
    </mx:Script>

 
    <esri:Map id="myMap">
        <esri:extent>
            <esri:Extent xmin="-122.2" ymin="24.89" xmax="-70.59" ymax="46.92">
                <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="Region" name="Region" url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer"/>
    </esri:Map>
    <mx:Button x="41" y="536" label="Button" click="test()"/>
</mx:Application>

Re: Definition Query is not working

DasaPaddock — Sat, 11 Dec 2021 22:52:05 GMT

Just a small clarification... you don't actually need to create empty strings at unused indexes. It's OK to use a sparse array like this:

<mx:Script>
        <![CDATA[
            private function test():void
            {
                var dynLay:ArcGISDynamicMapServiceLayer = myMap.getLayer("Region") as ArcGISDynamicMapServiceLayer;

                var layerDefArr:Array = new Array();
                layerDefArr[5] = "OBJECTID=1";

                dynLay.layerDefinitions = layerDefArr;
            }
        ]]>
    </mx:Script>

Re: Definition Query is not working

DavideRodomonti1 — Sat, 11 Dec 2021 22:52:08 GMT

<?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"
    layout="absolute"
    styleName="plain"
    pageTitle="Definition Query">

    <mx:Script>
        <![CDATA[
            
            private function test():void
            {
             var dynLay:ArcGISDynamicMapServiceLayer = myMap.getLayer("Region") as ArcGISDynamicMapServiceLayer;

    var layerDefArr:Array=new Array();
    
    var qry:String= new String();
    qry="OBJECTID=1";
    layerDefArr[0] = "";
    layerDefArr[1] = "";
    layerDefArr[2] = "";
    layerDefArr[3] = "";
    layerDefArr[4] = "";
    layerDefArr[5] = qry;
    
    dynLay.layerDefinitions = layerDefArr;
    
    dynLay.refresh();
            }
        ]]>
    </mx:Script>

 
    <esri:Map id="myMap">
        <esri:extent>
            <esri:Extent xmin="-122.2" ymin="24.89" xmax="-70.59" ymax="46.92">
                <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="Region" name="Region" url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer"/>
    </esri:Map>
    <mx:Button x="41" y="536" label="Button" click="test()"/>
</mx:Application>

Hi Robert, do u have a widget for sample flex that do the same?

David

Re: Definition Query is not working

RobertScheitlin__GISP — Tue, 22 Jun 2010 23:27:28 GMT

David,

Nope I don't see much sense in creating a widget for this as one would probably only use a definition query in very limited circumstances.

Re: Definition Query is not working

FaisalBukhari — Wed, 23 Jun 2010 06:41:49 GMT

Thanks Robert you always

helpful

Re: Definition Query is not working

DavideRodomonti1 — Wed, 23 Jun 2010 07:02:10 GMT

David,

Nope I don't see much sense in creating a widget for this as one would probably only use a definition query in very limited circumstances.

Thank u Robert, I need it cause I would like to filter my layer and the map has to show me a part of this layer.

David

Re: Definition Query is not working

RobertScheitlin__GISP — Wed, 23 Jun 2010 11:09:10 GMT

David,

You would not want a widget with a user interface on the screen for this ability to use a definition query on one layer though (at least I would not). You can easily add code like the sample demonstrates to the MapManager.mxml and then you would not have a need for a widget.

Re: Definition Query is not working

DavideRodomonti1 — Wed, 23 Jun 2010 12:03:14 GMT

David,

You would not want a widget with a user interface on the screen for this ability to use a definition query on one layer though (at least I would not). You can easily add code like the sample demonstrates to the MapManager.mxml and then you would not have a need for a widget.

Thanks Robert, I better explain what I need....I have a geodatabase with plans NOT georeferenced, so they are overlayed ... and I want to build a widget that makes me easy to select which plan I want to see and then show it (and only it) on the map through a definition query...one more thing..Should I use a Spatial Reference? If yes which one should I use? cause plans come from a simple CAD file not georeferenced.

David

Re: Definition Query is not working

DavideRodomonti1 — Thu, 24 Jun 2010 12:34:44 GMT

Thanks Robert, I better explain what I need....I have a geodatabase with plans NOT georeferenced, so they are overlayed ... and I want to build a widget that makes me easy to select which plan I want to see and then show it (and only it) on the map through a definition query...one more thing..Should I use a Spatial Reference? If yes which one should I use? cause plans come from a simple CAD file not georeferenced.

David

Robert, can u help me?

Re: Definition Query is not working

RobertScheitlin__GISP — Thu, 24 Jun 2010 12:53:29 GMT

David,

Sorry I can't say I'm interested in developing such a specialized widget (to many other thing on my plate). As far as the CAD data if it is not georeferenced than does it even overlay with your data in the correct location?

Re: Definition Query is not working

DavideRodomonti1 — Fri, 25 Jun 2010 09:28:08 GMT

David,

Sorry I can't say I'm interested in developing such a specialized widget (to many other thing on my plate). As far as the CAD data if it is not georeferenced than does it even overlay with your data in the correct location?

I understand Robert...
Can I use it? http://forums.esri.com/thread.asp?c=158&f=2421&t=287068&m=892110
Thanks,
David

Re: Definition Query is not working

DavideRodomonti1 — Mon, 28 Jun 2010 13:23:01 GMT

I understand Robert...
Can I use it? http://forums.esri.com/thread.asp?c=158&f=2421&t=287068&m=892110
Thanks,
David

I adapted this code and it works well..after the definition query I should use some function to zoom to the new layer extent.
David