Service feature table (cache)

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/*
 * 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
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.service_feature_table_cache;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.data.ServiceFeatureTable;
import com.esri.arcgisruntime.geometry.Envelope;
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.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;

public class ServiceFeatureTableCacheSample extends Application {

  private MapView mapView;
  private ServiceFeatureTable serviceFeatureTable; // keep loadable in scope to avoid garbage collection

  private static final String FEATURE_SERVICE_URL =
      "https://services2.arcgis.com/ZQgQTuoyBrtmoGdP/arcgis/rest/services/US_Bridges/FeatureServer/0";

  @Override
  public void start(Stage stage) {

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

      // size the stage, add a title, and set scene to stage
      stage.setTitle("Service Feature Table Cache Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // authentication with an API key or named user is required to access basemaps and other location services
      String yourAPIKey = System.getProperty("apiKey");
      ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);

      // create a map with the light gray basemap style
      ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_LIGHT_GRAY);

      // create a map view and set the map to it
      mapView = new MapView();
      mapView.setMap(map);

      // set a viewpoint on the map view
      mapView.setViewpoint(new Viewpoint(new Envelope(-140.740858094945, 14.1552479740679, -47.693259181055,
              64.8874243113506, SpatialReferences.getWgs84())));

      // create the service feature table
      serviceFeatureTable = new ServiceFeatureTable(FEATURE_SERVICE_URL);

      // explicitly set the mode to on interaction cache (which is also
      // the default mode for service feature tables)
      serviceFeatureTable.setFeatureRequestMode(ServiceFeatureTable.FeatureRequestMode.ON_INTERACTION_CACHE);

      // wait for the service feature table to load
      serviceFeatureTable.loadAsync();
      serviceFeatureTable.addDoneLoadingListener(() -> {
        if (serviceFeatureTable.getLoadStatus() == LoadStatus.LOADED) {

          // create the feature layer using the service feature table
          FeatureLayer featureLayer = new FeatureLayer(serviceFeatureTable);

          // add the feature layer to the map's operational layers
          map.getOperationalLayers().add(featureLayer);

        } else {
          new Alert(Alert.AlertType.ERROR, "Error loading Service Feature Table").show();
        }
      });

      // add the map view to stack pane
      stackPane.getChildren().addAll(mapView);

    } catch (Exception e) {
      // on any error, display stack trace
      e.printStackTrace();
    }
  }

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

    // release resources when the application closes
    if (mapView != null) {
      mapView.dispose();
    }
  }

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

    Application.launch(args);
  }
}