Java examples for Geographic Information System:Esri
use the ServiceFeatureTable's on-interaction-no-cache mode in esri
/*/*from w ww . j a va 2 s . c om*/ * Copyright 2015 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.sampleviewer.samples.featurelayers; import javafx.application.Application; import javafx.application.Platform; import javafx.geometry.Insets; import javafx.geometry.Pos; import javafx.scene.Scene; import javafx.scene.control.Label; import javafx.scene.control.TextArea; import javafx.scene.layout.StackPane; import javafx.scene.layout.VBox; import javafx.stage.Stage; import com.esri.arcgisruntime.datasource.Feature; import com.esri.arcgisruntime.datasource.arcgis.ServiceFeatureTable; import com.esri.arcgisruntime.geometry.Envelope; import com.esri.arcgisruntime.geometry.Point; import com.esri.arcgisruntime.geometry.SpatialReference; import com.esri.arcgisruntime.geometry.SpatialReferences; import com.esri.arcgisruntime.layers.FeatureLayer; import com.esri.arcgisruntime.mapping.Basemap; import com.esri.arcgisruntime.mapping.Map; import com.esri.arcgisruntime.mapping.view.MapView; import com.esri.arcgisruntime.mapping.view.Viewpoint; /** * This sample demonstrates how to use the ServiceFeatureTable's * on-interaction-no-cache mode. How it works: a {@link ServiceFeatureTable} is * created from a URL and its {@link ServiceFeatureTable.FeatureRequestMode} is * set to ON_INTERACTION_NO_CACHE before the ServiceFeatureTable is loaded. A * {@link FeatureLayer} is then created from this table and added to the Map so * its {@link Feature}s can be displayed in the MapView. * <p> * On-interaction-no-cache mode will always fetch Features from the server and * doesn't cache any Features on the client's side. This meaning that Features * will be fetched whenever the Map pans, zooms, selects, or queries. * <p> * To fetch all Features from the server, pan or zoom the MapView. This will * cause all the current Features to be destroyed and a request sent to the * server to re-populate all Features on the MapView. */ public class ServiceFeatureTableNoCache extends Application { private static final String SERVICE_FEATURE_URL = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/PoolPermits/FeatureServer/0"; private MapView mapView; private ServiceFeatureTable featureTable; @Override public void start(Stage stage) throws Exception { // create stack pane and application scene StackPane stackPane = new StackPane(); Scene scene = new Scene(stackPane); scene.getStylesheets().add( getClass().getResource("../resources/SamplesTheme.css") .toExternalForm()); // set title, size, and add scene to stage stage.setTitle("Service Feature Table No Cache Sample"); stage.setWidth(800); stage.setHeight(700); stage.setScene(scene); stage.show(); // create a control panel VBox vBoxControl = new VBox(6); vBoxControl.setMaxSize(250, 170); vBoxControl.getStyleClass().add("panel-region"); // create sample description Label descriptionLabel = new Label("Sample Description:"); descriptionLabel.getStyleClass().add("panel-label"); TextArea description = new TextArea( "This sample shows how to use " + "a Service Feature Table in on-interaction-no-cache mode. Pan or zoom" + " to request all Features from the server."); description.setWrapText(true); description.autosize(); description.setEditable(false); // add label and sample description to the control panel vBoxControl.getChildren().addAll(descriptionLabel, description); try { Map map = new Map(Basemap.createTopographic()); // create starting viewpoint for map SpatialReference spatialReference = SpatialReferences .getWebMercator(); Point leftPoint = new Point(-1.30758164047166E7, 4014771.46954516, spatialReference); Point rightPoint = new Point(-1.30730056797177E7, 4016869.78617381, spatialReference); Envelope envelope = new Envelope(leftPoint, rightPoint); Viewpoint viewpoint = new Viewpoint(envelope); // set starting viewpoint for map map.setInitialViewpoint(viewpoint); // create service feature table from URL featureTable = new ServiceFeatureTable(SERVICE_FEATURE_URL); // set cache mode for table to no caching featureTable .setFeatureRequestMode(ServiceFeatureTable.FeatureRequestMode.ON_INTERACTION_NO_CACHE); FeatureLayer featureLayer = new FeatureLayer(featureTable); // add feature layer to map map.getOperationalLayers().add(featureLayer); // create a view for this map and set map to it mapView = new MapView(); mapView.setMap(map); // add the map view and control panel to stack pane stackPane.getChildren().addAll(mapView, vBoxControl); StackPane.setAlignment(vBoxControl, Pos.TOP_LEFT); StackPane.setMargin(vBoxControl, new Insets(10, 0, 0, 10)); } catch (Exception e) { // on any error, display the stack trace e.printStackTrace(); } } /** * Stops and releases all resources used in application. * * @throws Exception if security manager doesn't allow JVM to exit with * current status */ @Override public void stop() throws Exception { if (mapView != null) { mapView.dispose(); } Platform.exit(); System.exit(0); } /** * Opens and runs application. * * @param args arguments passed to this application */ public static void main(String[] args) { Application.launch(args); } }