Clip and ship by a queried layer extent and by user defined extent

AlexGole1

I am trying add a functionality to the clip and ship script. I would also like the users to extract data by the extent of a queried feature layer. For instance, if County = "Alameda" then extract data that falls only within the Alameda county extent. Else, allow the users to hand draw an selection area. Here is my script but my testing conditions don't work correctly. My condition test as shown below does not work properly:

//variable that calls the textbox value
    var type = document.getElementById("textbox").value;
    
    //Set up the query per type
    var queryTask = new esri.tasks.QueryTask("http://sampleserver4.arcgisonline.com/ArcGIS/rest/services/HomelandSecurity/Incident_Data_Extraction/MapServer/2");  
    var query = new esri.tasks.Query();
    query.returnGeometry = true;
    
    //field to query
    query.outFields = ["ftype"]; 
    
    //execute query
    function executeQueryTask(type) {
    query.where = "ftype = " + type; 
    
    //If you want a result handler function, just replace that here
    queryTask.execute(query, function(featureSet){
        //This is designed to get the FIRST feature graphic as a JSON in the return because I am assuming you only have one county with that name
     var AOI = featureSet.features[0].geometry.toJSON(); 
    });
    }
    
    
    //First Area of interest selected by the client
    var Area = new FeatureSet();
    var features = [];
    features.push(map.graphics.graphics[0]);
    Area.features = features;

    if (executeQueryTask) {
     var params = {
     "Layers_to_Clip": clipLayers,
     "Area_of_Interest": AOI,
     "Feature_Format": registry.byId("formatBox").get("value")
    };
    }
    else {
     var params = {
     "Layers_to_Clip": clipLayers,
     "Area_of_Interest": Area,
     "Feature_Format": registry.byId("formatBox").get("value")
    };
    }

TimCollyer

I'm not familiar with the sample you referenced, but after a quick look at your code and I think there are few issues here...

1) You need to include the brackets to call a function. So where you have "if (executeQueryTask)", this should read "if (executeQueryTask())" if you want it to call your function. As it stands, it will always return true.

2) executeQueryTask() returns nothing, so if you do call it from your if statement, it will always return false.

3) queryTask.execute() is asynchronous, so if you do call executeQueryTask in your "if" statement, it will not wait queryTask.execute() to complete before returning.

4) You are declaring AOI within the scope of the callback function on queryTask.execute(). It will not be accessible in other areas of your code. You should declare this outside the callback function and then assign it within the callback function.

I think what you probably want to do is include all that code inside the call back function, so the callback function will look something like this

queryTask.execute(query, function(featureSet){
    
    var Area = new FeatureSet();
    var features = [];
    features.push(map.graphics.graphics[0]);
    Area.features = features;                        
    
    var params = {
        "Layers_to_Clip": clipLayers,
        "Feature_Format": registry.byId("formatBox").get("value")
    };                        
    
    if (featureSet.features.length > 0) {
        var AOI = featureSet.features[0].geometry.toJSON(); 
        params.Area_of_Interest = AOI;
    } else {
        params.Area_of_Interest = Area;
    }
    
    // now do something with "params" here
    
});

edit: Actually, there is still a question of what you want params.Area_of_Interest to actually be? In one case you are setting it to be a geometry string with: featureSet.features[0].geometry.toJson()... in the other case you are setting it to be a FeatureSet.