Edit with branch versioning

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 // Copyright 2022 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.  using Esri.ArcGISRuntime.ArcGISServices; using Esri.ArcGISRuntime.Data; using Esri.ArcGISRuntime.Mapping; using Esri.ArcGISRuntime.Security; using System.Diagnostics;  namespace ArcGIS.Samples.EditBranchVersioning {  [ArcGIS.Samples.Shared.Attributes.Sample(  name: "Edit with branch versioning",  category: "Data",  description: "Create, query and edit a specific server version using service geodatabase.",  instructions: "Once loaded, the map will zoom to the extent of the feature layer. The current version is indicated at the top of the map. Tap \"Create Version\" to open a dialog to specify the version information (name, access, and description). See the *Additional information* section for restrictions on the version name.",  tags: new[] { "branch versioning", "edit", "version control", "version management server" })]  public partial class EditBranchVersioning : ContentPage  {  private ArcGISFeature _selectedFeature;  private FeatureLayer _featureLayer;  private ServiceFeatureTable _featureTable;  private ServiceGeodatabase _serviceGeodatabase;   private string _userCreatedVersionName;  private string _attributeFieldName = "typdamage";   private List<VersionAccess> _accessLevels = new List<VersionAccess> { VersionAccess.Public, VersionAccess.Protected, VersionAccess.Private };  private List<string> _damageLevels = new List<string> { "Destroyed", "Inaccessible", "Major", "Minor", "Affected" };   public EditBranchVersioning()  {  InitializeComponent();  _ = Initialize();  }   private async Task Initialize()  {  // Handle the login to the feature service.  AuthenticationManager.Current.ChallengeHandler = new ChallengeHandler(async (info) =>  {  try  {  // WARNING: Never hardcode login information in a production application. This is done solely for the sake of the sample.  string sampleServer7User = "editor01";  string sampleServer7Pass = "S7#i2LWmYH75";  return await AccessTokenCredential.CreateAsync(info.ServiceUri, sampleServer7User, sampleServer7Pass);  }  catch (Exception ex)  {  Debug.WriteLine(ex.Message);  return null;  }  });   try  {  // Create a map.  MyMapView.Map = new Map(BasemapStyle.ArcGISStreets);   // Populate the combo boxes.  AccessBox.ItemsSource = _accessLevels;  DamageBox.ItemsSource = _damageLevels;   // Create and load a service geodatabase.  _serviceGeodatabase = new ServiceGeodatabase(new Uri("https://sampleserver7.arcgisonline.com/server/rest/services/DamageAssessment/FeatureServer/0"));  await _serviceGeodatabase.LoadAsync();   // When the service geodatabase has loaded get the default version name.  CurrentVersionLabel.Text = $"Current version: {_serviceGeodatabase.DefaultVersionName}";   // Get the service feature table from the service geodatabase.  _featureTable = _serviceGeodatabase.GetTable(0);   // Create a feature layer from the service feature table and add it to the map.  _featureLayer = new FeatureLayer(_featureTable);  MyMapView.Map.OperationalLayers.Add(_featureLayer);  await _featureLayer.LoadAsync();   // When the feature layer has loaded set the viewpoint and update the UI.  await MyMapView.SetViewpointAsync(new Viewpoint(_featureLayer.FullExtent));   // Enable the UI.  CreateVersionButton.IsEnabled = true;  MyMapView.GeoViewTapped += MyMapView_GeoViewTapped;  }  catch (Exception ex)  {  ShowAlert(ex.Message, ex.GetType().Name);  }  }   private void VersionButtonClicked(object sender, EventArgs e)  {  // Check if user version has been created.  if (_userCreatedVersionName != null)  {  _ = SwitchVersion();  }  else  {  // Display UI for creating a new version.  SwitchView(VersionView);  }   // Clear the selection.  _featureLayer.ClearSelection();  _selectedFeature = null;  }   private async Task SwitchVersion()  {  // Check if the default version is loaded.  if (_serviceGeodatabase.VersionName == _serviceGeodatabase.DefaultVersionName)  {  // Switch to the user created version.  await _serviceGeodatabase.SwitchVersionAsync(_userCreatedVersionName);  CurrentVersionLabel.Text = $"Current version: {_serviceGeodatabase.VersionName}";  }  else  {  if (_serviceGeodatabase.HasLocalEdits())  {  // Apply the edits made to the service geodatabase.  IReadOnlyList<FeatureTableEditResult> edits = await _serviceGeodatabase.ApplyEditsAsync();  if (!(edits?.Count > 0))  {  // Verify that there were no errors when applying edits.  if (!edits.ToArray()[0].EditResults[0].CompletedWithErrors)  {  ShowAlert("Applied edits successfully on the server");  }  else  {  ShowAlert(edits.ToArray()[0].EditResults[0].Error.Message);  return;  }  }  }   // Switch to the default version.  await _serviceGeodatabase.SwitchVersionAsync(_serviceGeodatabase.DefaultVersionName);  CurrentVersionLabel.Text = $"Current version: {_serviceGeodatabase.VersionName}";  }  }   private bool VersionNameValid(string versionName)  {  // Verify that the version name is valid.  if (versionName.Contains('.') || versionName.Contains(';') || versionName.Contains('\'') || versionName.Contains('\"'))  {  ShowAlert("Please enter a valid version name.\nThe name cannot contain the following characters:\n. ; ' \" ");  return false;  }  else if (versionName.Length > 0 && versionName.StartsWith(" "))  {  ShowAlert("Version name cannot begin with a space");  return false;  }  else if (versionName.Length > 62)  {  ShowAlert("Version name must not exceed 62 characters");  return false;  }  else if (versionName.Length == 0)  {  ShowAlert("Please enter a version name");  return false;  }  return true;  }   private void ShowAlert(string alertText, string titleText = "Alert")  {  Application.Current.Windows[0].Page.DisplayAlert(titleText, alertText, "OK");  }   private async void MyMapView_GeoViewTapped(object sender, Esri.ArcGISRuntime.Maui.GeoViewInputEventArgs e)  {  // Check if a feature is selected and the service geodatabase is not on the default version.  if (_selectedFeature is ArcGISFeature && _serviceGeodatabase.VersionName != _serviceGeodatabase.DefaultVersionName)  {  try  {  // Load the feature.  await _selectedFeature.LoadAsync();   // Update the feature geometry.  _selectedFeature.Geometry = e.Location;   // Update the table.  await _selectedFeature.FeatureTable.UpdateFeatureAsync(_selectedFeature);   // Update the service.  await ((ServiceFeatureTable)_selectedFeature.FeatureTable).ApplyEditsAsync();   ShowAlert("Moved feature " + _selectedFeature.Attributes["objectid"]);  }  catch (Exception ex)  {  ShowAlert(ex.Message, "Failed to edit feature");  }  }  else  {  _featureLayer.ClearSelection();  try  {  // Perform an identify to determine if a user tapped on a feature.  IdentifyLayerResult identifyResult = await MyMapView.IdentifyLayerAsync(_featureLayer, e.Position, 2, false);   // Do nothing if there are no results.  if (!identifyResult.GeoElements.Any())  {  return;  }   // Get the tapped feature.  _selectedFeature = (ArcGISFeature)identifyResult.GeoElements.First();   // Select the feature.  _featureLayer.SelectFeature(_selectedFeature);   // Get the current value.  string currentAttributeValue = _selectedFeature.Attributes[_attributeFieldName].ToString();   // Update the combobox selection without triggering the event.  DamageBox.SelectedItem = currentAttributeValue;   MoveText.IsVisible = DamageBox.IsEnabled = _serviceGeodatabase.VersionName != _serviceGeodatabase.DefaultVersionName;   // Update the UI for the selection.  SwitchView(AttributeView);  }  catch (Exception ex)  {  ShowAlert(ex.Message, ex.GetType().Name);  }  }  }   private async Task ApplyDamageChange()  {  try  {  // Get the value from the UI.  string selectedAttributeValue = DamageBox.SelectedItem.ToString();   // Check if the new value is the same as the existing value.  if (_selectedFeature.Attributes[_attributeFieldName].ToString() == selectedAttributeValue)  {  return;  }   // Load the feature.  await _selectedFeature.LoadAsync();   // Update the attribute value.  _selectedFeature.SetAttributeValue(_attributeFieldName, selectedAttributeValue);   // Update the table.  await _selectedFeature.FeatureTable.UpdateFeatureAsync(_selectedFeature);   // Update the service.  await ((ServiceFeatureTable)_selectedFeature.FeatureTable).ApplyEditsAsync();   SwitchView(DefaultView);  ShowAlert("Edited feature " + _selectedFeature.Attributes["objectid"]);   // Clear the selection.  _featureLayer.ClearSelection();  _selectedFeature = null;  }  catch (Exception ex)  {  ShowAlert(ex.Message, "Failed to edit feature");  }  }   private async void ConfirmVersionClick(object sender, EventArgs e)  {  try  {  // Validate name and access input.  if (!VersionNameValid(NameEntryBox.Text))  {  return;  }   if (!(AccessBox.SelectedItem is VersionAccess))  {  ShowAlert("Please select an access level");  return;  }   // Set the user defined name, access level and description as service version parameters  ServiceVersionParameters newVersionParameters = new ServiceVersionParameters();  newVersionParameters.Name = NameEntryBox.Text;  newVersionParameters.Access = (VersionAccess)AccessBox.SelectedItem;  newVersionParameters.Description = DescriptionBox.Text ?? "";   ServiceVersionInfo newVersion = await _serviceGeodatabase.CreateVersionAsync(newVersionParameters);  _userCreatedVersionName = newVersion.Name;  _ = SwitchVersion();   CreateVersionButton.Text = "Switch version";  }  catch (Exception ex)  {  ShowAlert(ex.Message, ex.GetType().Name);  }  finally  {  SwitchView(DefaultView);  }  }   private void CancelVersionClick(object sender, EventArgs e) => SwitchView(DefaultView);   private async void CloseAttributeClick(object sender, EventArgs e)  {  SwitchView(DefaultView);   if (_serviceGeodatabase.VersionName != _serviceGeodatabase.DefaultVersionName)  {  try  {  await ApplyDamageChange();  }  catch (Exception ex)  {  ShowAlert(ex.Message, ex.GetType().Name);  }  }   // Clear the selection.  _featureLayer.ClearSelection();  _selectedFeature = null;  }   private void SwitchView(View view)  {  DefaultView.IsVisible = false;  VersionView.IsVisible = false;  AttributeView.IsVisible = false;   view.IsVisible = true;  }  } }