Display OGC API collection

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 /*  * Copyright 2021 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.display_ogc_api_collection;  import com.esri.arcgisruntime.ArcGISRuntimeEnvironment; import com.esri.arcgisruntime.data.OgcFeatureCollectionTable; import com.esri.arcgisruntime.data.QueryParameters; import com.esri.arcgisruntime.data.ServiceFeatureTable; import com.esri.arcgisruntime.geometry.Envelope; 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.view.MapView; import com.esri.arcgisruntime.symbology.SimpleLineSymbol; import com.esri.arcgisruntime.symbology.SimpleRenderer;  import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Alert; import javafx.scene.control.ProgressIndicator; import javafx.scene.layout.StackPane; import javafx.scene.paint.Color; import javafx.stage.Stage;  public class DisplayOgcApiCollectionSample extends Application {   private MapView mapView;  private OgcFeatureCollectionTable ogcFeatureCollectionTable; // keep loadable in scope to avoid garbage collection   @Override  public void start(Stage stage) {   try {  // create stack pane and JavaFX app scene  StackPane stackPane = new StackPane();  Scene scene = new Scene(stackPane);   // set title, size, and add JavaFX scene to stage  stage.setTitle("Display OGC API Collection");  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 topographic basemap style  ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);   // create a map view and set the map to it  mapView = new MapView();  mapView.setMap(map);   // create a progress indicator  var progressIndicator = new ProgressIndicator();   // add the map view and progress indicator to the stack pane  stackPane.getChildren().addAll(mapView, progressIndicator);   // define strings for the service URL and collection id  // note that the service defines the collection id which can be accessed via OgcFeatureCollectionInfo.getCollectionId().  String serviceUrl = "https://demo.ldproxy.net/daraa";  String collectionId = "TransportationGroundCrv";   // create an OGC feature collection table from the service url and collection id  ogcFeatureCollectionTable = new OgcFeatureCollectionTable(serviceUrl, collectionId);   // set the feature request mode to manual  // in this mode, the table must be manually populated - panning and zooming won't request features automatically  ogcFeatureCollectionTable.setFeatureRequestMode(ServiceFeatureTable.FeatureRequestMode.MANUAL_CACHE);   // load the table  ogcFeatureCollectionTable.loadAsync();   // ensure the feature collection table has loaded successfully before creating a feature layer from it to display on the map  ogcFeatureCollectionTable.addDoneLoadingListener(() -> {  if (ogcFeatureCollectionTable.getLoadStatus() == LoadStatus.LOADED) {   // create a feature layer and set a renderer to it to visualize the OGC API features  var featureLayer = new FeatureLayer(ogcFeatureCollectionTable);  var simpleRenderer = new SimpleRenderer(new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLUE, 3));  featureLayer.setRenderer(simpleRenderer);   // add the layer to the map  map.getOperationalLayers().add(featureLayer);   // zoom to a small area within the dataset by default  Envelope datasetExtent = ogcFeatureCollectionTable.getExtent();  if (datasetExtent != null && !datasetExtent.isEmpty()) {  mapView.setViewpointGeometryAsync(  new Envelope(datasetExtent.getCenter(), datasetExtent.getWidth() / 3, datasetExtent.getHeight() / 3));  }   } else {  // show an alert dialog if there is a loading failure  new Alert(Alert.AlertType.ERROR, "Failed to load OGC Feature Collection Table: " +  ogcFeatureCollectionTable.getLoadError().getCause().getMessage()).show();  }  });   // once the map view navigation has completed, query the OGC API feature table for  // additional features within the new visible extent.  mapView.addViewpointChangedListener(e -> {  if (!e.getSource().isNavigating()) {   // get the current extent  Envelope currentExtent = mapView.getVisibleArea().getExtent();   // create a query based on the current visible extent  QueryParameters visibleExtentQuery = new QueryParameters();  visibleExtentQuery.setGeometry(currentExtent);  visibleExtentQuery.setSpatialRelationship(QueryParameters.SpatialRelationship.INTERSECTS);  // set a limit of 5000 on the number of returned features per request, the default on some services  // could be as low as 10  visibleExtentQuery.setMaxFeatures(5000);   try {  // populate the table with the query, leaving existing table entries intact  // setting the outfields parameter to null requests all fields  ogcFeatureCollectionTable.populateFromServiceAsync(visibleExtentQuery, false, null).addDoneListener(() -> {  progressIndicator.setVisible(false);  });   } catch (Exception exception) {  exception.printStackTrace();  new Alert(Alert.AlertType.ERROR, exception.getMessage()).show();  }  }  });   } catch (Exception e) {  // on any error, display the stack trace.  e.printStackTrace();  }  }   /**  * Stops and releases all resources used in application.  */  @Override  public void stop() {  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);  } }