ArcGIS Runtime SDK for Java

Local Server Dynamic Workspace Shapefile

Demonstrates how to dynamically add a local shapefile to a map using the Local Server.

How it works

To create aShapefileWorkspace and add it to a LocalMapService:

  1. Create and run a local server.
    • LocalServer.INSTANCE creates a local server
    • Server.startAsync() starts the server asynchronously
  2. Create a LocalMapService instance using an empty .MPK file (the sample uses one that is created for you). Don't start it yet.
  3. Create a ShapefileWorkspace with id 'shp_wkspc' and absolute path to location of were shapefile is being stored.
  4. Create a TableSublayerSource using shapefileWorkspace.getId() and name of shapefile with extension, example `mjrroads.shp`.
  5. Add ShapefileWorkspace to LocalMapService.setDynamicWorkspaces().
  6. Start the LocalMapService
    • localMapService.startAsync()
    • localMapService.addStatusChangedListener() fires whenever the status of the local server has changed.
    • Wait for server to be in the LocalServerStatus.STARTED state.
  7. Create aArcGISMapImageLayer using localMapService.getUrl()
  8. Add the ArcGISMapImageSublayer to it's list of sublayers. The ArcGISMapImageSublayer points to the shapefile file on disk.
  9. Once ArcGISMapImageLayer is done loading, set ArcGISMapImageSublayer to ArcGISMapImageLayer.getSublayers(). The ArcGISMapImageSublayer points to the shapefile file on disk.

Code

/*
 * 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.localserver.local_server_dynamic_workspace_shapefile;

import java.io.File;
import java.util.Collections;

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.layout.StackPane;
import javafx.stage.FileChooser;
import javafx.stage.FileChooser.ExtensionFilter;
import javafx.stage.Stage;

import com.esri.arcgisruntime.layers.ArcGISMapImageLayer;
import com.esri.arcgisruntime.layers.ArcGISMapImageSublayer;
import com.esri.arcgisruntime.layers.TableSublayerSource;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.localserver.DynamicWorkspace;
import com.esri.arcgisruntime.localserver.LocalMapService;
import com.esri.arcgisruntime.localserver.LocalServer;
import com.esri.arcgisruntime.localserver.LocalServerStatus;
import com.esri.arcgisruntime.localserver.ShapefileWorkspace;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol.Style;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class LocalServerDynamicWorkspaceShapefileSample extends Application {

  private MapView mapView;
  private static LocalServer server;

  @Override
  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);
      scene.getStylesheets().add(getClass().getResource("/css/style.css").toExternalForm());

      // set title, size, and add scene to stage
      stage.setTitle("Local Server Dynamic Workspace Shapefile Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // create Choose Shapefile button
      Button addButton = new Button("Choose Shapefile");
      addButton.setMaxSize(150, 25);
      addButton.setDisable(true);

      // check local server is installed
      if (LocalServer.INSTANCE.checkInstallValid()) {
        server = LocalServer.INSTANCE;
        server.addStatusChangedListener(status -> {
          if (server.getStatus() == LocalServerStatus.STARTED) {
            addButton.setDisable(false);
          }
        });
        // start local server
        server.startAsync();
      } else {
        Platform.runLater(() -> {
          Alert dialog = new Alert(AlertType.INFORMATION);
          dialog.setHeaderText("Local Server Load Error");
          dialog.setContentText("Local Server install path couldn't be located.");
          dialog.showAndWait();
          Platform.exit();
        });
      }

      FileChooser fileChooser = new FileChooser();
      fileChooser.setTitle("Open Resource File");
      fileChooser.getExtensionFilters().addAll(new ExtensionFilter("Shapefiles", "*.shp"));
      fileChooser.setInitialDirectory(new File("./samples-data/shapefiles/"));
      // choose the file, then start the local map service
      addButton.setOnAction(e -> {
        // browse to the shapefile file
        File selectedFile = fileChooser.showOpenDialog(stage);

        if (selectedFile != null) {
          String fileName = selectedFile.getName();
          String path = selectedFile.getParent();
          startLocalMapService(fileName, path);
        }
      });

      // create a map and add it to a map view
      ArcGISMap map = new ArcGISMap(Basemap.createTopographic());
      mapView = new MapView();
      mapView.setMap(map);

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

  /**
   * Start a LocalMapService and attaches a dynamic workspace shapefile.
   * 
   * @param fileName mpk file name
   * @param path path to mpk file
   */
  private void startLocalMapService(String fileName, String path) {

    // start a service from the blank MPK
    String mapServiceURL = "./samples-data/local_server/mpk_blank.mpk";
    LocalMapService localMapService = new LocalMapService(mapServiceURL);

    //create a shapefile workspace
    ShapefileWorkspace shapefileWorkspace = new ShapefileWorkspace("shp_wkspc", path);
    // create a layersource that represents the actual shapefile on disk
    TableSublayerSource source = new TableSublayerSource(shapefileWorkspace.getId(), fileName);
    // create a sublayer instance from the source
    ArcGISMapImageSublayer shapefileSublayer = new ArcGISMapImageSublayer(0, source);
    // add the dynamic workspace to the localMapService
    Iterable<DynamicWorkspace> dynamicWorkspaces = Collections.singletonList(shapefileWorkspace);
    localMapService.setDynamicWorkspaces(dynamicWorkspaces);
    localMapService.addStatusChangedListener(event -> {
      if (event.getNewStatus() == LocalServerStatus.STARTED) {
        // ready to add the shapefile layer to the map. Create a map image layer using url
        ArcGISMapImageLayer imageLayer = new ArcGISMapImageLayer(localMapService.getUrl());

        // add the sub layer to the image layer
        imageLayer.addDoneLoadingListener(() -> {
          if (imageLayer.getLoadStatus() == LoadStatus.LOADED) {
            // default symbol and renderer need to be created and applied
            SimpleLineSymbol lineSymbol = new SimpleLineSymbol(Style.SOLID, 0xFFFF0000, 3);
            shapefileSublayer.setRenderer(new SimpleRenderer(lineSymbol));
            imageLayer.getSublayers().add(shapefileSublayer);

            shapefileSublayer.addDoneLoadingListener(() -> {
              if (shapefileSublayer.getLoadStatus() == LoadStatus.LOADED) {
                // zoom the map to the extent of the added shapefile layer
                mapView.setViewpoint(new Viewpoint(shapefileSublayer.getMapServiceSublayerInfo().getExtent()));
              } else {
                Alert alert = new Alert(Alert.AlertType.ERROR, "Map Image Sublayer Failed to Load!");
                alert.show();
              }
            });
            shapefileSublayer.loadAsync();
          } else {
            Alert alert = new Alert(Alert.AlertType.ERROR, "Map Image Layer Failed to Load!");
            alert.show();
          }
        });
        imageLayer.loadAsync();

        // add the image layer to map. Clear any previous layers
        mapView.getMap().getOperationalLayers().clear();
        mapView.getMap().getOperationalLayers().add(imageLayer);
      }
    });
    localMapService.startAsync();
  }

  /**
   * 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);
  }
}


In this topic
  1. How it works
  2. Code