Start a local feature service and display its features in a map.
Use case
For executing offline geoprocessing tasks in your ArcGIS Maps SDK for Java applications via an offline (local) server.
How to use the sample
A Local Server and Local Feature Service will automatically be started. Once started then a FeatureLayer will be created and added to the map.
How it works
Create and run a local server with LocalServer.INSTANCE.
Start the server asynchronously with Server.startAsync().
Wait for server to be in the LocalServerStatus.STARTED state.
Callbacks attached to Server.addStatusChangedListener() will invoke whenever the status of the local server has changed.
Create and run a local feature service.
Instantiate LocalFeatureService(Url) to create a local feature service with the given url path to mpkx file.
Start the service asynchronously with LocalFeatureService.startAsync().
The service will be added to the local server automatically.
Wait for state of the feature service to be LocalServerStatus.STARTED.
Callbacks attached to LocalFeatureService.addStatusChangedListener() will invoke whenever the status of the local service has changed.
Create a feature layer from local feature service.
Create a ServiceFeatureTable(Url) from local feature service url provided by LocalFeatureService.getUrl().
Load the table asynchronously using ServiceFeatureTable.loadAsync().
Create feature layer from service feature table using new FeatureLayer(ServiceFeatureTable).
Load the layer asynchronously using FeatureLayer.loadAsync().
Add feature layer to map using ArcGISMap.getOperationalLayers().add(FeatureLayer).
Relevant API
FeatureLayer
LocalFeatureService
LocalServer
LocalServerStatus
StatusChangedEvent
Additional information
Local Server can be downloaded for Windows and Linux platforms from your ArcGIS Developers dashboard. Local Server is not supported on macOS.
Specific versions of ArcGIS Maps SDK for Local Server are compatible with the version of ArcGIS Pro you use to create geoprocessing and map packages. For example, the ArcGIS Maps SDK for Java v100.11.0 is configured for Local Server v100.10.0 which provides compatibility for packages created with ArcGIS Pro 2.7.x. For more information see the ArcGIS Developers guide.
To configure the ArcGIS Maps SDK for Java v100.11.0 to work with ArcGIS Maps SDK for Local Server 100.9.0:
Development machine:
Locate the Local Server installation directory and rename the folder from LocalServer100.9 to LocalServer100.10.
Update the environment variable from RUNTIME_LOCAL_SERVER_100_9 to RUNTIME_LOCAL_SERVER_100_10.
Deployment machine(s): Rename the deployment folder included with your application (or referenced by the LocalServerEnvironment.InstallPath property) from LocalServer100.9 to LocalServer100.10.
Tags
feature service, local, offline, server, service
Sample Code
LocalServerFeatureLayerSample.java
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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.local_server_feature_layer;
import java.io.File;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.ProgressIndicator;
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.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.localserver.LocalFeatureService;
import com.esri.arcgisruntime.localserver.LocalServer;
import com.esri.arcgisruntime.localserver.LocalServerStatus;
import com.esri.arcgisruntime.localserver.LocalService.StatusChangedEvent;
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;
publicclassLocalServerFeatureLayerSampleextendsApplication{
private ArcGISMap map;
private FeatureLayer featureLayer; // keep loadable in scope to avoid garbage collectionprivate LocalFeatureService featureService;
private MapView mapView;
private ProgressIndicator featureLayerProgress;
privatestatic LocalServer server;
@Overridepublicvoidstart(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("Local Server Feature Layer 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 streets basemap style map = new ArcGISMap(BasemapStyle.ARCGIS_STREETS);
// create a map view and set the map to it mapView = new MapView();
mapView.setMap(map);
// track progress of loading feature layer to map featureLayerProgress = new ProgressIndicator(ProgressIndicator.INDETERMINATE_PROGRESS);
featureLayerProgress.setMaxWidth(30);
// check that local server install path can be accessedif (LocalServer.INSTANCE.checkInstallValid()) {
server = LocalServer.INSTANCE;
server.addStatusChangedListener(status -> {
if (server.getStatus() == LocalServerStatus.STARTED) {
// start feature service File mpkxFile = new File(System.getProperty("data.dir"), "./samples-data/local_server/PointsofInterest.mpkx");
featureService = new LocalFeatureService(mpkxFile.getAbsolutePath());
featureService.addStatusChangedListener(this::addLocalFeatureLayer);
featureService.startAsync();
}
});
// start local server server.startAsync();
} else {
Platform.runLater(() -> {
Alert dialog = new Alert(AlertType.INFORMATION);
dialog.initOwner(mapView.getScene().getWindow());
dialog.setHeaderText("Local Server Load Error");
dialog.setContentText("Local Geoprocessing Failed to load.");
dialog.showAndWait();
Platform.exit();
});
}
// add the map view and progress indicator to the stack pane stackPane.getChildren().addAll(mapView, featureLayerProgress);
StackPane.setAlignment(featureLayerProgress, Pos.CENTER);
} catch (Exception e) {
// on any error, display the stack trace. e.printStackTrace();
}
}
/**
* Once the feature service starts, a feature layer is created from that service and added to the map.
* <p>
* When the feature layer is done loading the view will zoom to the location of were the features were added.
*
* @param status status of feature service
*/privatevoidaddLocalFeatureLayer(StatusChangedEvent status){
// check that the feature service has startedif (status.getNewStatus() == LocalServerStatus.STARTED && mapView.getMap() != null) {
// get the url of where feature service is located String url = featureService.getUrl() + "/0";
// create a feature layer using the url ServiceFeatureTable featureTable = new ServiceFeatureTable(url);
featureTable.loadAsync();
featureLayer = new FeatureLayer(featureTable);
featureLayer.addDoneLoadingListener(() -> {
Envelope extent = featureLayer.getFullExtent();
if (featureLayer.getLoadStatus() == LoadStatus.LOADED && extent != null) {
mapView.setViewpoint(new Viewpoint(extent));
Platform.runLater(() -> featureLayerProgress.setVisible(false));
} else {
new Alert(Alert.AlertType.ERROR, "Feature Layer Failed to Load!").show();
}
});
featureLayer.loadAsync();
// add feature layer to map map.getOperationalLayers().add(featureLayer);
}
}
/**
* Stops and releases all resources used in application.
*/@Overridepublicvoidstop(){
if (mapView != null) {
mapView.dispose();
}
}
/**
* Opens and runs application.
*
* @param args arguments passed to this application
*/publicstaticvoidmain(String[] args){
Application.launch(args);
}
}