jaegonkim | e0f45b5 | 2018-10-09 20:23:26 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.workflow.api; |
| 17 | |
| 18 | import com.fasterxml.jackson.databind.JsonNode; |
| 19 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 20 | import com.fasterxml.jackson.databind.node.BooleanNode; |
| 21 | import com.fasterxml.jackson.databind.node.IntNode; |
| 22 | import com.fasterxml.jackson.databind.node.MissingNode; |
| 23 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 24 | import com.fasterxml.jackson.databind.node.TextNode; |
| 25 | import org.slf4j.Logger; |
| 26 | import org.slf4j.LoggerFactory; |
| 27 | |
| 28 | import java.lang.annotation.Annotation; |
| 29 | import java.lang.reflect.Field; |
| 30 | import java.util.ArrayList; |
| 31 | import java.util.HashMap; |
| 32 | import java.util.List; |
| 33 | import java.util.Map; |
| 34 | import java.util.Objects; |
| 35 | |
| 36 | /** |
| 37 | * Class for injecting json data model on the work-let execution context. |
| 38 | */ |
| 39 | public class JsonDataModelInjector { |
| 40 | |
| 41 | private static final Logger log = LoggerFactory.getLogger(JsonDataModelInjector.class); |
| 42 | |
| 43 | /** |
| 44 | * Injects data model to work-let. |
| 45 | * @param worklet work-let to be injected |
| 46 | * @param context workflow context |
| 47 | * @throws WorkflowException workflow exception |
| 48 | */ |
| 49 | public void inject(Worklet worklet, WorkflowContext context) throws WorkflowException { |
| 50 | |
| 51 | handle(worklet, context, this::injectModel); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Inhales data model from work-let. |
| 56 | * @param worklet work-let to be inhaled |
| 57 | * @param context workflow context |
| 58 | * @throws WorkflowException workflow exception |
| 59 | */ |
| 60 | public void inhale(Worklet worklet, WorkflowContext context) throws WorkflowException { |
| 61 | |
| 62 | handle(worklet, context, this::inhaleModel); |
| 63 | } |
| 64 | |
| 65 | private void handle(Worklet worklet, WorkflowContext context, DataModelFieldBehavior func) |
| 66 | throws WorkflowException { |
| 67 | Class cl = worklet.getClass(); |
| 68 | List<Field> fields = getInheritedFields(cl); |
| 69 | if (Objects.isNull(fields)) { |
| 70 | log.error("Invalid fields on {}", cl); |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | for (Field field: fields) { |
| 75 | Annotation[] annotations = field.getAnnotations(); |
| 76 | if (Objects.isNull(annotations)) { |
| 77 | continue; |
| 78 | } |
| 79 | for (Annotation annotation: annotations) { |
| 80 | if (!(annotation instanceof JsonDataModel)) { |
| 81 | continue; |
| 82 | } |
| 83 | JsonDataModel model = (JsonDataModel) annotation; |
| 84 | func.apply(worklet, context, field, model); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | private static List<Field> getInheritedFields(Class<?> type) { |
| 90 | List<Field> fields = new ArrayList<Field>(); |
| 91 | |
| 92 | Class<?> cl = type; |
| 93 | while (cl != null && cl != Object.class) { |
| 94 | for (Field field : cl.getDeclaredFields()) { |
| 95 | if (!field.isSynthetic()) { |
| 96 | fields.add(field); |
| 97 | } |
| 98 | } |
| 99 | cl = cl.getSuperclass(); |
| 100 | } |
| 101 | return fields; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Functional interface for json data model annotated field behavior. |
| 106 | */ |
| 107 | @FunctionalInterface |
| 108 | public interface DataModelFieldBehavior { |
| 109 | void apply(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 110 | throws WorkflowException; |
| 111 | } |
| 112 | |
| 113 | private static Map<Class, DataModelFieldBehavior> injectTypeMap = new HashMap<>(); |
| 114 | static { |
| 115 | injectTypeMap.put(String.class, JsonDataModelInjector::injectText); |
| 116 | injectTypeMap.put(Integer.class, JsonDataModelInjector::injectInteger); |
| 117 | injectTypeMap.put(Boolean.class, JsonDataModelInjector::injectBoolean); |
| 118 | injectTypeMap.put(JsonNode.class, JsonDataModelInjector::injectJsonNode); |
| 119 | injectTypeMap.put(ArrayNode.class, JsonDataModelInjector::injectArrayNode); |
| 120 | injectTypeMap.put(ObjectNode.class, JsonDataModelInjector::injectObjectNode); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Injects data model on the filed of work-let. |
| 125 | * @param worklet work-let |
| 126 | * @param context workflow context |
| 127 | * @param field the field of work-let |
| 128 | * @param model data model for the field |
| 129 | * @throws WorkflowException workflow exception |
| 130 | */ |
| 131 | private void injectModel(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 132 | throws WorkflowException { |
| 133 | |
| 134 | DataModelFieldBehavior behavior = injectTypeMap.get(model.type()); |
| 135 | if (Objects.isNull(behavior)) { |
| 136 | throw new WorkflowException("Not supported type(" + model.type() + ")"); |
| 137 | } |
| 138 | behavior.apply(worklet, context, field, model); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Injects text data model on the filed of work-let. |
| 143 | * @param worklet work-let |
| 144 | * @param context workflow context |
| 145 | * @param field the field of work-let |
| 146 | * @param model text data model for the field |
| 147 | * @throws WorkflowException workflow exception |
| 148 | */ |
| 149 | private static void injectText(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 150 | throws WorkflowException { |
| 151 | |
| 152 | String text = ((JsonDataModelTree) context.data()).textAt(model.path()); |
| 153 | if (Objects.isNull(text)) { |
| 154 | if (model.optional()) { |
| 155 | return; |
| 156 | } |
| 157 | throw new WorkflowException("Invalid text data model on (" + model.path() + ")"); |
| 158 | } |
| 159 | |
| 160 | if (!(Objects.equals(field.getType(), String.class))) { |
| 161 | throw new WorkflowException("Target field (" + field + ") is not String"); |
| 162 | } |
| 163 | |
| 164 | try { |
| 165 | field.setAccessible(true); |
| 166 | field.set(worklet, text); |
| 167 | } catch (IllegalAccessException e) { |
| 168 | throw new WorkflowException(e); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Injects integer data model on the filed of work-let. |
| 174 | * @param worklet work-let |
| 175 | * @param context workflow context |
| 176 | * @param field the field of work-let |
| 177 | * @param model integer data model for the field |
| 178 | * @throws WorkflowException workflow exception |
| 179 | */ |
| 180 | private static void injectInteger(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 181 | throws WorkflowException { |
| 182 | |
| 183 | Integer number = ((JsonDataModelTree) context.data()).intAt(model.path()); |
| 184 | if (Objects.isNull(number)) { |
| 185 | if (model.optional()) { |
| 186 | return; |
| 187 | } |
| 188 | throw new WorkflowException("Invalid number data model on (" + model.path() + ")"); |
| 189 | } |
| 190 | |
| 191 | if (!(Objects.equals(field.getType(), Integer.class))) { |
| 192 | throw new WorkflowException("Target field (" + field + ") is not Integer"); |
| 193 | } |
| 194 | |
| 195 | try { |
| 196 | field.setAccessible(true); |
| 197 | field.set(worklet, number); |
| 198 | } catch (IllegalAccessException e) { |
| 199 | throw new WorkflowException(e); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Injects boolean data model on the filed of work-let. |
| 205 | * @param worklet work-let |
| 206 | * @param context workflow context |
| 207 | * @param field the field of work-let |
| 208 | * @param model boolean data model for the field |
| 209 | * @throws WorkflowException workflow exception |
| 210 | */ |
| 211 | private static void injectBoolean(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 212 | throws WorkflowException { |
| 213 | |
| 214 | Boolean bool = ((JsonDataModelTree) context.data()).booleanAt(model.path()); |
| 215 | if (Objects.isNull(bool)) { |
| 216 | if (model.optional()) { |
| 217 | return; |
| 218 | } |
| 219 | throw new WorkflowException("Invalid boolean data model on (" + model.path() + ")"); |
| 220 | } |
| 221 | |
| 222 | if (!(Objects.equals(field.getType(), Boolean.class))) { |
| 223 | throw new WorkflowException("Target field (" + field + ") is not Boolean"); |
| 224 | } |
| 225 | |
| 226 | try { |
| 227 | field.setAccessible(true); |
| 228 | field.set(worklet, bool); |
| 229 | } catch (IllegalAccessException e) { |
| 230 | throw new WorkflowException(e); |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Injects json node data model on the filed of work-let. |
| 236 | * @param worklet work-let |
| 237 | * @param context workflow context |
| 238 | * @param field the field of work-let |
| 239 | * @param model json node data model for the field |
| 240 | * @throws WorkflowException workflow exception |
| 241 | */ |
| 242 | private static void injectJsonNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 243 | throws WorkflowException { |
| 244 | |
| 245 | JsonNode jsonNode = ((JsonDataModelTree) context.data()).nodeAt(model.path()); |
| 246 | if (Objects.isNull(jsonNode)) { |
| 247 | if (model.optional()) { |
| 248 | return; |
| 249 | } |
| 250 | throw new WorkflowException("Invalid json node data model on (" + model.path() + ")"); |
| 251 | } |
| 252 | |
| 253 | if (!(Objects.equals(field.getType(), JsonNode.class))) { |
| 254 | throw new WorkflowException("Target field (" + field + ") is not JsonNode"); |
| 255 | } |
| 256 | |
| 257 | try { |
| 258 | field.setAccessible(true); |
| 259 | field.set(worklet, jsonNode); |
| 260 | } catch (IllegalAccessException e) { |
| 261 | throw new WorkflowException(e); |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Injects json array node data model on the filed of work-let. |
| 267 | * @param worklet work-let |
| 268 | * @param context workflow context |
| 269 | * @param field the field of work-let |
| 270 | * @param model json array node data model for the field |
| 271 | * @throws WorkflowException workflow exception |
| 272 | */ |
| 273 | private static void injectArrayNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 274 | throws WorkflowException { |
| 275 | |
| 276 | ArrayNode arrayNode = ((JsonDataModelTree) context.data()).arrayAt(model.path()); |
| 277 | if (Objects.isNull(arrayNode)) { |
| 278 | if (model.optional()) { |
| 279 | return; |
| 280 | } |
| 281 | throw new WorkflowException("Invalid array node data model on (" + model.path() + ")"); |
| 282 | } |
| 283 | |
| 284 | if (!(Objects.equals(field.getType(), ArrayNode.class))) { |
| 285 | throw new WorkflowException("Target field (" + field + ") is not ArrayNode"); |
| 286 | } |
| 287 | |
| 288 | try { |
| 289 | field.setAccessible(true); |
| 290 | field.set(worklet, arrayNode); |
| 291 | } catch (IllegalAccessException e) { |
| 292 | throw new WorkflowException(e); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Injects json object node data model on the filed of work-let. |
| 298 | * @param worklet work-let |
| 299 | * @param context workflow context |
| 300 | * @param field the field of work-let |
| 301 | * @param model json object node data model for the field |
| 302 | * @throws WorkflowException workflow exception |
| 303 | */ |
| 304 | private static void injectObjectNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 305 | throws WorkflowException { |
| 306 | |
| 307 | ObjectNode objNode = ((JsonDataModelTree) context.data()).objectAt(model.path()); |
| 308 | if (Objects.isNull(objNode)) { |
| 309 | if (model.optional()) { |
| 310 | return; |
| 311 | } |
| 312 | throw new WorkflowException("Invalid object node data model on (" + model.path() + ")"); |
| 313 | } |
| 314 | |
| 315 | if (!(Objects.equals(field.getType(), ObjectNode.class))) { |
| 316 | throw new WorkflowException("Target field (" + field + ") is not ObjectNode"); |
| 317 | } |
| 318 | |
| 319 | try { |
| 320 | field.setAccessible(true); |
| 321 | field.set(worklet, objNode); |
| 322 | } catch (IllegalAccessException e) { |
| 323 | throw new WorkflowException(e); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | private static Map<Class, DataModelFieldBehavior> inhaleTypeMap = new HashMap<>(); |
| 328 | static { |
| 329 | inhaleTypeMap.put(String.class, JsonDataModelInjector::inhaleText); |
| 330 | inhaleTypeMap.put(Integer.class, JsonDataModelInjector::inhaleInteger); |
| 331 | inhaleTypeMap.put(Boolean.class, JsonDataModelInjector::inhaleBoolean); |
| 332 | inhaleTypeMap.put(JsonNode.class, JsonDataModelInjector::inhaleJsonNode); |
| 333 | inhaleTypeMap.put(ArrayNode.class, JsonDataModelInjector::inhaleArrayNode); |
| 334 | inhaleTypeMap.put(ObjectNode.class, JsonDataModelInjector::inhaleObjectNode); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Inhales data model on the filed of work-let. |
| 339 | * @param worklet work-let |
| 340 | * @param context workflow context |
| 341 | * @param field the field of work-let |
| 342 | * @param model data model for the field |
| 343 | * @throws WorkflowException workflow exception |
| 344 | */ |
| 345 | private void inhaleModel(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 346 | throws WorkflowException { |
| 347 | |
| 348 | DataModelFieldBehavior behavior = inhaleTypeMap.get(model.type()); |
| 349 | if (Objects.isNull(behavior)) { |
| 350 | throw new WorkflowException("Not supported type(" + model.type() + ")"); |
| 351 | } |
| 352 | behavior.apply(worklet, context, field, model); |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Inhales text data model on the filed of work-let. |
| 357 | * @param worklet work-let |
| 358 | * @param context workflow context |
| 359 | * @param field the field of work-let |
| 360 | * @param model text data model for the field |
| 361 | * @throws WorkflowException workflow exception |
| 362 | */ |
| 363 | private static void inhaleText(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 364 | throws WorkflowException { |
| 365 | |
| 366 | if (!(Objects.equals(field.getType(), String.class))) { |
| 367 | throw new WorkflowException("Target field (" + field + ") is not String"); |
| 368 | } |
| 369 | |
| 370 | String text; |
| 371 | try { |
| 372 | field.setAccessible(true); |
| 373 | text = (String) field.get(worklet); |
| 374 | } catch (IllegalAccessException e) { |
| 375 | throw new WorkflowException(e); |
| 376 | } |
| 377 | |
| 378 | if (Objects.isNull(text)) { |
| 379 | return; |
| 380 | } |
| 381 | |
| 382 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 383 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 384 | |
| 385 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 386 | tree.setAt(model.path(), text); |
| 387 | } else if (!(jsonNode instanceof TextNode)) { |
| 388 | throw new WorkflowException("Invalid text data model on (" + model.path() + ")"); |
| 389 | } else { |
| 390 | tree.remove(model.path()); |
| 391 | tree.setAt(model.path(), text); |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * Inhales integer data model on the filed of work-let. |
| 397 | * @param worklet work-let |
| 398 | * @param context workflow context |
| 399 | * @param field the field of work-let |
| 400 | * @param model integer data model for the field |
| 401 | * @throws WorkflowException workflow exception |
| 402 | */ |
| 403 | private static void inhaleInteger(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 404 | throws WorkflowException { |
| 405 | |
| 406 | if (!(Objects.equals(field.getType(), Integer.class))) { |
| 407 | throw new WorkflowException("Target field (" + field + ") is not Integer"); |
| 408 | } |
| 409 | |
| 410 | Integer number; |
| 411 | try { |
| 412 | field.setAccessible(true); |
| 413 | number = (Integer) field.get(worklet); |
| 414 | } catch (IllegalAccessException e) { |
| 415 | throw new WorkflowException(e); |
| 416 | } |
| 417 | |
| 418 | if (Objects.isNull(number)) { |
| 419 | return; |
| 420 | } |
| 421 | |
| 422 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 423 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 424 | |
| 425 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 426 | tree.setAt(model.path(), number); |
| 427 | } else if (!(jsonNode instanceof IntNode)) { |
| 428 | throw new WorkflowException("Invalid integer data model on (" + model.path() + ")"); |
| 429 | } else { |
| 430 | tree.remove(model.path()); |
| 431 | tree.setAt(model.path(), number); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Inhales boolean data model on the filed of work-let. |
| 437 | * @param worklet work-let |
| 438 | * @param context workflow context |
| 439 | * @param field the field of work-let |
| 440 | * @param model boolean data model for the field |
| 441 | * @throws WorkflowException workflow exception |
| 442 | */ |
| 443 | private static void inhaleBoolean(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 444 | throws WorkflowException { |
| 445 | |
| 446 | if (!(Objects.equals(field.getType(), Boolean.class))) { |
| 447 | throw new WorkflowException("Target field (" + field + ") is not Boolean"); |
| 448 | } |
| 449 | |
| 450 | Boolean bool; |
| 451 | try { |
| 452 | field.setAccessible(true); |
| 453 | bool = (Boolean) field.get(worklet); |
| 454 | } catch (IllegalAccessException e) { |
| 455 | throw new WorkflowException(e); |
| 456 | } |
| 457 | |
| 458 | if (Objects.isNull(bool)) { |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 463 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 464 | |
| 465 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 466 | tree.setAt(model.path(), bool); |
| 467 | } else if (!(jsonNode instanceof BooleanNode)) { |
| 468 | throw new WorkflowException("Invalid boolean data model on (" + model.path() + ")"); |
| 469 | } else { |
| 470 | tree.remove(model.path()); |
| 471 | tree.setAt(model.path(), bool); |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Inhales json node data model on the filed of work-let. |
| 477 | * @param worklet work-let |
| 478 | * @param context workflow context |
| 479 | * @param field the field of work-let |
| 480 | * @param model json node data model for the field |
| 481 | * @throws WorkflowException workflow exception |
| 482 | */ |
| 483 | private static void inhaleJsonNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 484 | throws WorkflowException { |
| 485 | |
| 486 | if (!(Objects.equals(field.getType(), JsonNode.class))) { |
| 487 | throw new WorkflowException("Target field (" + field + ") is not JsonNode"); |
| 488 | } |
| 489 | |
| 490 | JsonNode tgtJsonNode; |
| 491 | try { |
| 492 | field.setAccessible(true); |
| 493 | tgtJsonNode = (JsonNode) field.get(worklet); |
| 494 | } catch (IllegalAccessException e) { |
| 495 | throw new WorkflowException(e); |
| 496 | } |
| 497 | |
| 498 | if (Objects.isNull(tgtJsonNode)) { |
| 499 | return; |
| 500 | } |
| 501 | |
| 502 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 503 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 504 | |
| 505 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 506 | tree.attach(model.path(), new JsonDataModelTree(tgtJsonNode)); |
| 507 | } else if (!(jsonNode instanceof JsonNode)) { |
| 508 | throw new WorkflowException("Invalid json node data model on (" + model.path() + ")"); |
| 509 | } else { |
| 510 | // do nothing |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * Inhales json array node data model on the filed of work-let. |
| 516 | * @param worklet work-let |
| 517 | * @param context workflow context |
| 518 | * @param field the field of work-let |
| 519 | * @param model json array node data model for the field |
| 520 | * @throws WorkflowException workflow exception |
| 521 | */ |
| 522 | private static void inhaleArrayNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 523 | throws WorkflowException { |
| 524 | if (!(Objects.equals(field.getType(), ArrayNode.class))) { |
| 525 | throw new WorkflowException("Target field (" + field + ") is not ArrayNode"); |
| 526 | } |
| 527 | |
| 528 | ArrayNode tgtArrayNode; |
| 529 | try { |
| 530 | field.setAccessible(true); |
| 531 | tgtArrayNode = (ArrayNode) field.get(worklet); |
| 532 | } catch (IllegalAccessException e) { |
| 533 | throw new WorkflowException(e); |
| 534 | } |
| 535 | |
| 536 | if (Objects.isNull(tgtArrayNode)) { |
| 537 | return; |
| 538 | } |
| 539 | |
| 540 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 541 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 542 | |
| 543 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 544 | tree.attach(model.path(), new JsonDataModelTree(tgtArrayNode)); |
| 545 | } else if (!(jsonNode instanceof ArrayNode)) { |
| 546 | throw new WorkflowException("Invalid array node data model on (" + model.path() + ")"); |
| 547 | } else { |
| 548 | // do nothing |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | /** |
| 553 | * Inhales json object node data model on the filed of work-let. |
| 554 | * @param worklet work-let |
| 555 | * @param context workflow context |
| 556 | * @param field the field of work-let |
| 557 | * @param model json object node data model for the field |
| 558 | * @throws WorkflowException workflow exception |
| 559 | */ |
| 560 | private static void inhaleObjectNode(Worklet worklet, WorkflowContext context, Field field, JsonDataModel model) |
| 561 | throws WorkflowException { |
| 562 | if (!(Objects.equals(field.getType(), ObjectNode.class))) { |
| 563 | throw new WorkflowException("Target field (" + field + ") is not ObjectNode"); |
| 564 | } |
| 565 | |
| 566 | ObjectNode tgtObjNode; |
| 567 | try { |
| 568 | field.setAccessible(true); |
| 569 | tgtObjNode = (ObjectNode) field.get(worklet); |
| 570 | } catch (IllegalAccessException e) { |
| 571 | throw new WorkflowException(e); |
| 572 | } |
| 573 | |
| 574 | if (Objects.isNull(tgtObjNode)) { |
| 575 | return; |
| 576 | } |
| 577 | |
| 578 | JsonDataModelTree tree = (JsonDataModelTree) context.data(); |
| 579 | JsonNode jsonNode = tree.nodeAt(model.path()); |
| 580 | |
| 581 | if (Objects.isNull(jsonNode) || jsonNode instanceof MissingNode) { |
| 582 | tree.attach(model.path(), new JsonDataModelTree(tgtObjNode)); |
| 583 | } else if (!(jsonNode instanceof ObjectNode)) { |
| 584 | throw new WorkflowException("Invalid object node data model on (" + model.path() + ")"); |
| 585 | } else { |
| 586 | // do nothing |
| 587 | } |
| 588 | } |
| 589 | } |