function QueryExecutor(queryObject, callback) {
    this.index = 0;
    this.name = queryObject.name;
    this.values = queryObject.values;
    this.callback = callback;
    this.interval = null;
}

QueryExecutor.prototype.startShow = function () {
    var me = this;
    this.interval = setInterval(function () {
        me.execute();
    }, 3000);
};

QueryExecutor.prototype.stopShow = function () {
    clearInterval(this.interval);
};

QueryExecutor.prototype.execute = function () {
    var me = this,
        value = me.values[me.index];

    console.log(value);

    $GP.queries.add({
        featureClassId: "{http://www.intergraph.com/geomedia/gml}OM_USA_STATES",
        url: "http://demo.hexagongeospatial.com/GWM_WFS_NonTransactional/service.svc/get",
        definitionName: "WFS",
        queryName: me.name,
        addToLegend: false,
        filters: [{
            operator: "=",
            operands: ["{http://www.intergraph.com/geomedia/gml}STATE_NAME", value]
        }]
    }, function (result) {
        me.index = (me.index + 1) % me.values.length;
        if (result.updated) {
            $GP.ui.info(`Analysis '${me.name}' updated to 'STATE_NAME = ${value}'`);
            return;
        }
        
        $GP.queries.find({
            analysisId: result.analysisId,
        }, function (result2) {
            result2.analysis.addToLegend(function () {
                //$GP.legend.find({
                //    name: queryName
                //}, function (ret){ret.legendItems[0].fitLayer();});
            });
        });
    });    
};

[{
    name: "AroundNevada",
    values: [
        "Nevada", "California", "Oregon", "Idaho", "Utah", "Arizona"        
    ]
}, /*{ // uncomment to see bug
    name: "AroundKansas",
    values: [
        "Colorado", "Nebraska", "Iowa", "Missouri", "Oklahoma"
    ]
}*/].map(function (queryObject){
    return new QueryExecutor(queryObject);
}).forEach(function(executor){
    setTimeout(function () {
        executor.startShow();
    }, 1500);    
});