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Feature Layer Query


 * Copyright 2017 Esri.
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.

package com.esri.samples.featurelayers.feature_layer_query;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;

import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.geometry.Envelope;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class FeatureLayerQuerySample extends Application {

  private Alert dialog;

  private MapView mapView;
  private FeatureLayer featureLayer;
  private ServiceFeatureTable featureTable;
  private Point startPoint;
  private ListenableFuture<FeatureQueryResult> tableQueryResult;

  private final int SCALE = 100000000;

  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);

      // set title, size, and add scene to stage
      stage.setTitle("Feature Layer Query Sample");

      // create a control panel
      VBox controlsVBox = new VBox(6);
      controlsVBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.3)"), CornerRadii.EMPTY,
      controlsVBox.setPadding(new Insets(10.0));
      controlsVBox.setMaxSize(250, 80);

      // create area for searching
      Label searchLabel = new Label("Search for a State:");
      TextField searchField = new TextField();
      Button searchButton = new Button("Search");
      HBox searchBox = new HBox(5);
      searchBox.getChildren().addAll(searchField, searchButton);

      // create dialog to display alert information
      dialog = new Alert(AlertType.WARNING);

      // search for the state that was entered
      searchButton.setOnAction(e -> {
        // clear the selection of the feature
        String stateText = searchField.getText();

        if (stateText.trim().length() > 0) {
        } else {
          dialog.setContentText("State Not Found! Add a valid state name.");
          mapView.setViewpointCenterAsync(startPoint, SCALE);

      // add search label and box to the control panel
      controlsVBox.getChildren().addAll(searchLabel, searchBox);

      // create a starting point for the view
      startPoint = new Point(-11000000, 5000000, SpatialReferences.getWebMercator());

      // set fill orange (0xFFFFCC00) color for the US states with a black color
      // (0xFF000000) outline
      SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF000000, 1);
      SimpleFillSymbol fillSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, 0xFFFFCC00, lineSymbol);

      // create a service feature table
      featureTable = new ServiceFeatureTable("");

      // create a feature layer from table
      featureLayer = new FeatureLayer(featureTable);

      // enable search once the feature layer is loaded
      featureLayer.addDoneLoadingListener(() -> {
        if (featureLayer.getLoadStatus() == LoadStatus.LOADED) {
        } else {
          Alert alert = new Alert(Alert.AlertType.ERROR, "Feature Layer Failed to Load!");

      // set renderer for feature layer
      featureLayer.setRenderer(new SimpleRenderer(fillSymbol));

      // create a ArcGISMap with basemap topographic
      final ArcGISMap map = new ArcGISMap(Basemap.createTopographic());

      // add feature layer to operational layers

      // create a view for this ArcGISMap
      mapView = new MapView();

      // set viewpoint to the start point
      mapView.setViewpointCenterAsync(startPoint, SCALE);

      // add the map view and control panel to stack pane
      stackPane.getChildren().addAll(mapView, controlsVBox);
      StackPane.setAlignment(controlsVBox, Pos.TOP_LEFT);
      StackPane.setMargin(controlsVBox, new Insets(10, 0, 0, 10));
    } catch (Exception e) {
      // on any error, display the stack trace

   * Searches for a US state inside the current ServiceFeatureTable.
   * @param state a US state that is being searched
  private void searchForState(String state) {

    // create a query for the state that was entered
    QueryParameters query = new QueryParameters();
    query.setWhereClause("upper(STATE_NAME) LIKE '" + state.toUpperCase() + "'");

    // search for the state feature in the feature table
    tableQueryResult = featureTable.queryFeaturesAsync(query);

    tableQueryResult.addDoneListener(() -> {
      try {
        // get the result from the query
        FeatureQueryResult result = tableQueryResult.get();
        // if a state feature was found
        if (result.iterator().hasNext()) {
          // get state feature and zoom to it
          Feature feature = result.iterator().next();
          Envelope envelope = feature.getGeometry().getExtent();
          mapView.setViewpointGeometryAsync(envelope, 200);

          // set the state feature to be selected
        } else {
          Platform.runLater(() -> {
            dialog.setContentText("State Not Found! Add a valid state name.");
            mapView.setViewpointCenterAsync(startPoint, SCALE);
      } catch (Exception e) {
        // on any error, display the stack trace

   * Stops and releases all resources used in application.
  public void stop() {

    if (mapView != null) {

   * Opens and runs application.
   * @param args arguments passed to this application
  public static void main(String[] args) {



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