| 1 | package be.nikiroo.fanfix.library; |
| 2 | |
| 3 | import java.io.File; |
| 4 | import java.io.IOException; |
| 5 | import java.net.URL; |
| 6 | import java.net.UnknownHostException; |
| 7 | import java.util.AbstractMap.SimpleEntry; |
| 8 | import java.util.ArrayList; |
| 9 | import java.util.Collections; |
| 10 | import java.util.List; |
| 11 | import java.util.Map.Entry; |
| 12 | |
| 13 | import be.nikiroo.fanfix.Instance; |
| 14 | import be.nikiroo.fanfix.data.MetaData; |
| 15 | import be.nikiroo.fanfix.data.Story; |
| 16 | import be.nikiroo.fanfix.output.BasicOutput; |
| 17 | import be.nikiroo.fanfix.output.BasicOutput.OutputType; |
| 18 | import be.nikiroo.fanfix.supported.BasicSupport; |
| 19 | import be.nikiroo.fanfix.supported.SupportType; |
| 20 | import be.nikiroo.utils.Image; |
| 21 | import be.nikiroo.utils.Progress; |
| 22 | import be.nikiroo.utils.StringUtils; |
| 23 | |
| 24 | /** |
| 25 | * Manage a library of Stories: import, export, list, modify. |
| 26 | * <p> |
| 27 | * Each {@link Story} object will be associated with a (local to the library) |
| 28 | * unique ID, the LUID, which will be used to identify the {@link Story}. |
| 29 | * <p> |
| 30 | * Most of the {@link BasicLibrary} functions work on a partial (cover |
| 31 | * <b>MAY</b> not be included) {@link MetaData} object. |
| 32 | * |
| 33 | * @author niki |
| 34 | */ |
| 35 | abstract public class BasicLibrary { |
| 36 | /** |
| 37 | * A {@link BasicLibrary} status. |
| 38 | * |
| 39 | * @author niki |
| 40 | */ |
| 41 | public enum Status { |
| 42 | /** The library is ready. */ |
| 43 | READY, |
| 44 | /** The library is invalid (not correctly set up). */ |
| 45 | INVALID, |
| 46 | /** You are not allowed to access this library. */ |
| 47 | UNAUTORIZED, |
| 48 | /** The library is currently out of commission. */ |
| 49 | UNAVAILABLE, |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Return a name for this library (the UI may display this). |
| 54 | * <p> |
| 55 | * Must not be NULL. |
| 56 | * |
| 57 | * @return the name, or an empty {@link String} if none |
| 58 | */ |
| 59 | public String getLibraryName() { |
| 60 | return ""; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * The library status. |
| 65 | * |
| 66 | * @return the current status |
| 67 | */ |
| 68 | public Status getStatus() { |
| 69 | return Status.READY; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Retrieve the main {@link File} corresponding to the given {@link Story}, |
| 74 | * which can be passed to an external reader or instance. |
| 75 | * <p> |
| 76 | * Do <b>NOT</b> alter this file. |
| 77 | * |
| 78 | * @param luid |
| 79 | * the Library UID of the story |
| 80 | * @param pg |
| 81 | * the optional {@link Progress} |
| 82 | * |
| 83 | * @return the corresponding {@link Story} |
| 84 | */ |
| 85 | public abstract File getFile(String luid, Progress pg); |
| 86 | |
| 87 | /** |
| 88 | * Return the cover image associated to this story. |
| 89 | * |
| 90 | * @param luid |
| 91 | * the Library UID of the story |
| 92 | * |
| 93 | * @return the cover image |
| 94 | */ |
| 95 | public abstract Image getCover(String luid); |
| 96 | |
| 97 | /** |
| 98 | * Return the cover image associated to this source. |
| 99 | * <p> |
| 100 | * By default, return the custom cover if any, and if not, return the cover |
| 101 | * of the first story with this source. |
| 102 | * |
| 103 | * @param source |
| 104 | * the source |
| 105 | * |
| 106 | * @return the cover image or NULL |
| 107 | */ |
| 108 | public Image getSourceCover(String source) { |
| 109 | Image custom = getCustomSourceCover(source); |
| 110 | if (custom != null) { |
| 111 | return custom; |
| 112 | } |
| 113 | |
| 114 | List<MetaData> metas = getListBySource(source); |
| 115 | if (metas.size() > 0) { |
| 116 | return getCover(metas.get(0).getLuid()); |
| 117 | } |
| 118 | |
| 119 | return null; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Return the custom cover image associated to this source. |
| 124 | * <p> |
| 125 | * By default, return NULL. |
| 126 | * |
| 127 | * @param source |
| 128 | * the source to look for |
| 129 | * |
| 130 | * @return the custom cover or NULL if none |
| 131 | */ |
| 132 | public Image getCustomSourceCover(@SuppressWarnings("unused") String source) { |
| 133 | return null; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Fix the source cover to the given story cover. |
| 138 | * |
| 139 | * @param source |
| 140 | * the source to change |
| 141 | * @param luid |
| 142 | * the story LUID |
| 143 | */ |
| 144 | public abstract void setSourceCover(String source, String luid); |
| 145 | |
| 146 | /** |
| 147 | * Return the list of stories (represented by their {@link MetaData}, which |
| 148 | * <b>MAY</b> not have the cover included). |
| 149 | * |
| 150 | * @param pg |
| 151 | * the optional {@link Progress} |
| 152 | * |
| 153 | * @return the list (can be empty but not NULL) |
| 154 | */ |
| 155 | protected abstract List<MetaData> getMetas(Progress pg); |
| 156 | |
| 157 | /** |
| 158 | * Invalidate the {@link Story} cache (when the content should be re-read |
| 159 | * because it was changed). |
| 160 | */ |
| 161 | protected void deleteInfo() { |
| 162 | deleteInfo(null); |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Invalidate the {@link Story} cache (when the content is removed). |
| 167 | * <p> |
| 168 | * All the cache can be deleted if NULL is passed as meta. |
| 169 | * |
| 170 | * @param luid |
| 171 | * the LUID of the {@link Story} to clear from the cache, or NULL |
| 172 | * for all stories |
| 173 | */ |
| 174 | protected abstract void deleteInfo(String luid); |
| 175 | |
| 176 | /** |
| 177 | * Invalidate the {@link Story} cache (when the content has changed, but we |
| 178 | * already have it) with the new given meta. |
| 179 | * |
| 180 | * @param meta |
| 181 | * the {@link Story} to clear from the cache |
| 182 | */ |
| 183 | protected abstract void updateInfo(MetaData meta); |
| 184 | |
| 185 | /** |
| 186 | * Return the next LUID that can be used. |
| 187 | * |
| 188 | * @return the next luid |
| 189 | */ |
| 190 | protected abstract int getNextId(); |
| 191 | |
| 192 | /** |
| 193 | * Delete the target {@link Story}. |
| 194 | * |
| 195 | * @param luid |
| 196 | * the LUID of the {@link Story} |
| 197 | * |
| 198 | * @throws IOException |
| 199 | * in case of I/O error or if the {@link Story} wa not found |
| 200 | */ |
| 201 | protected abstract void doDelete(String luid) throws IOException; |
| 202 | |
| 203 | /** |
| 204 | * Actually save the story to the back-end. |
| 205 | * |
| 206 | * @param story |
| 207 | * the {@link Story} to save |
| 208 | * @param pg |
| 209 | * the optional {@link Progress} |
| 210 | * |
| 211 | * @return the saved {@link Story} (which may have changed, especially |
| 212 | * regarding the {@link MetaData}) |
| 213 | * |
| 214 | * @throws IOException |
| 215 | * in case of I/O error |
| 216 | */ |
| 217 | protected abstract Story doSave(Story story, Progress pg) |
| 218 | throws IOException; |
| 219 | |
| 220 | /** |
| 221 | * Refresh the {@link BasicLibrary}, that is, make sure all metas are |
| 222 | * loaded. |
| 223 | * |
| 224 | * @param pg |
| 225 | * the optional progress reporter |
| 226 | */ |
| 227 | public void refresh(Progress pg) { |
| 228 | getMetas(pg); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * List all the known types (sources) of stories. |
| 233 | * |
| 234 | * @return the sources |
| 235 | */ |
| 236 | public synchronized List<String> getSources() { |
| 237 | List<String> list = new ArrayList<String>(); |
| 238 | for (MetaData meta : getMetas(null)) { |
| 239 | String storySource = meta.getSource(); |
| 240 | if (!list.contains(storySource)) { |
| 241 | list.add(storySource); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | Collections.sort(list); |
| 246 | return list; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * List all the known authors of stories. |
| 251 | * |
| 252 | * @return the authors |
| 253 | */ |
| 254 | public synchronized List<String> getAuthors() { |
| 255 | List<String> list = new ArrayList<String>(); |
| 256 | for (MetaData meta : getMetas(null)) { |
| 257 | String storyAuthor = meta.getAuthor(); |
| 258 | if (!list.contains(storyAuthor)) { |
| 259 | list.add(storyAuthor); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | Collections.sort(list); |
| 264 | return list; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Return the list of authors, grouped by starting letter(s) if needed. |
| 269 | * <p> |
| 270 | * If the number of author is not too high, only one group with an empty |
| 271 | * name and all the authors will be returned. |
| 272 | * <p> |
| 273 | * If not, the authors will be separated into groups: |
| 274 | * <ul> |
| 275 | * <li><tt>*</tt>: any author whose name doesn't contain letters nor numbers |
| 276 | * </li> |
| 277 | * <li><tt>0-9</tt>: any authors whose name starts with a number</li> |
| 278 | * <li><tt>A-C</tt> (for instance): any author whose name starts with |
| 279 | * <tt>A</tt>, <tt>B</tt> or <tt>C</tt></li> |
| 280 | * </ul> |
| 281 | * Note that the letters used in the groups can vary (except <tt>*</tt> and |
| 282 | * <tt>0-9</tt>, which may only be present or not). |
| 283 | * |
| 284 | * @return the authors' names, grouped by letter(s) |
| 285 | */ |
| 286 | public List<Entry<String, List<String>>> getAuthorsGrouped() { |
| 287 | int MAX = 20; |
| 288 | |
| 289 | List<Entry<String, List<String>>> groups = new ArrayList<Entry<String, List<String>>>(); |
| 290 | List<String> authors = getAuthors(); |
| 291 | |
| 292 | if (authors.size() <= MAX) { |
| 293 | groups.add(new SimpleEntry<String, List<String>>("", authors)); |
| 294 | return groups; |
| 295 | } |
| 296 | |
| 297 | groups.add(new SimpleEntry<String, List<String>>("*", getAuthorsGroup( |
| 298 | authors, '*'))); |
| 299 | groups.add(new SimpleEntry<String, List<String>>("0-9", |
| 300 | getAuthorsGroup(authors, '0'))); |
| 301 | |
| 302 | for (char car = 'A'; car <= 'Z'; car++) { |
| 303 | groups.add(new SimpleEntry<String, List<String>>(Character |
| 304 | .toString(car), getAuthorsGroup(authors, car))); |
| 305 | } |
| 306 | |
| 307 | // do NOT collapse * and [0-9] with the rest |
| 308 | for (int i = 2; i + 1 < groups.size(); i++) { |
| 309 | Entry<String, List<String>> now = groups.get(i); |
| 310 | Entry<String, List<String>> next = groups.get(i + 1); |
| 311 | int currentTotal = now.getValue().size() + next.getValue().size(); |
| 312 | if (currentTotal <= MAX) { |
| 313 | String key = now.getKey().charAt(0) + "-" |
| 314 | + next.getKey().charAt(next.getKey().length() - 1); |
| 315 | List<String> all = new ArrayList<String>(); |
| 316 | all.addAll(now.getValue()); |
| 317 | all.addAll(next.getValue()); |
| 318 | groups.set(i, new SimpleEntry<String, List<String>>(key, all)); |
| 319 | groups.remove(i + 1); |
| 320 | i--; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | for (int i = 0; i < groups.size(); i++) { |
| 325 | if (groups.get(i).getValue().size() == 0) { |
| 326 | groups.remove(i); |
| 327 | i--; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | return groups; |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * Get all the authors that start with the given character: |
| 336 | * <ul> |
| 337 | * <li><tt>*</tt>: any author whose name doesn't contain letters nor numbers |
| 338 | * </li> |
| 339 | * <li><tt>0</tt>: any authors whose name starts with a number</li> |
| 340 | * <li><tt>A</tt> (any capital latin letter): any author whose name starts |
| 341 | * with <tt>A</tt></li> |
| 342 | * </ul> |
| 343 | * |
| 344 | * @param authors |
| 345 | * the full list of authors |
| 346 | * @param car |
| 347 | * the starting character, <tt>*</tt>, <tt>0</tt> or a capital |
| 348 | * letter |
| 349 | * @return the authors that fulfill the starting letter |
| 350 | */ |
| 351 | private List<String> getAuthorsGroup(List<String> authors, char car) { |
| 352 | List<String> accepted = new ArrayList<String>(); |
| 353 | for (String author : authors) { |
| 354 | char first = '*'; |
| 355 | for (int i = 0; first == '*' && i < author.length(); i++) { |
| 356 | String san = StringUtils.sanitize(author, true, true); |
| 357 | char c = san.charAt(i); |
| 358 | if (c >= '0' && c <= '9') { |
| 359 | first = '0'; |
| 360 | } else if (c >= 'a' && c <= 'z') { |
| 361 | first = (char) (c - 'a' + 'A'); |
| 362 | } else if (c >= 'A' && c <= 'Z') { |
| 363 | first = c; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | if (first == car) { |
| 368 | accepted.add(author); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | return accepted; |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * List all the stories in the {@link BasicLibrary}. |
| 377 | * <p> |
| 378 | * Cover images not included. |
| 379 | * |
| 380 | * @return the stories |
| 381 | */ |
| 382 | public synchronized List<MetaData> getList() { |
| 383 | return getMetas(null); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * List all the stories of the given source type in the {@link BasicLibrary} |
| 388 | * , or all the stories if NULL is passed as a type. |
| 389 | * <p> |
| 390 | * Cover images not included. |
| 391 | * |
| 392 | * @param type |
| 393 | * the type of story to retrieve, or NULL for all |
| 394 | * |
| 395 | * @return the stories |
| 396 | */ |
| 397 | public synchronized List<MetaData> getListBySource(String type) { |
| 398 | List<MetaData> list = new ArrayList<MetaData>(); |
| 399 | for (MetaData meta : getMetas(null)) { |
| 400 | String storyType = meta.getSource(); |
| 401 | if (type == null || type.equalsIgnoreCase(storyType)) { |
| 402 | list.add(meta); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | Collections.sort(list); |
| 407 | return list; |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * List all the stories of the given author in the {@link BasicLibrary}, or |
| 412 | * all the stories if NULL is passed as an author. |
| 413 | * <p> |
| 414 | * Cover images not included. |
| 415 | * |
| 416 | * @param author |
| 417 | * the author of the stories to retrieve, or NULL for all |
| 418 | * |
| 419 | * @return the stories |
| 420 | */ |
| 421 | public synchronized List<MetaData> getListByAuthor(String author) { |
| 422 | List<MetaData> list = new ArrayList<MetaData>(); |
| 423 | for (MetaData meta : getMetas(null)) { |
| 424 | String storyAuthor = meta.getAuthor(); |
| 425 | if (author == null || author.equalsIgnoreCase(storyAuthor)) { |
| 426 | list.add(meta); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | Collections.sort(list); |
| 431 | return list; |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Retrieve a {@link MetaData} corresponding to the given {@link Story}, |
| 436 | * cover image <b>MAY</b> not be included. |
| 437 | * |
| 438 | * @param luid |
| 439 | * the Library UID of the story |
| 440 | * |
| 441 | * @return the corresponding {@link Story} |
| 442 | */ |
| 443 | public synchronized MetaData getInfo(String luid) { |
| 444 | if (luid != null) { |
| 445 | for (MetaData meta : getMetas(null)) { |
| 446 | if (luid.equals(meta.getLuid())) { |
| 447 | return meta; |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | return null; |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Retrieve a specific {@link Story}. |
| 457 | * |
| 458 | * @param luid |
| 459 | * the Library UID of the story |
| 460 | * @param pg |
| 461 | * the optional progress reporter |
| 462 | * |
| 463 | * @return the corresponding {@link Story} or NULL if not found |
| 464 | */ |
| 465 | public synchronized Story getStory(String luid, Progress pg) { |
| 466 | if (pg == null) { |
| 467 | pg = new Progress(); |
| 468 | } |
| 469 | |
| 470 | Progress pgGet = new Progress(); |
| 471 | Progress pgProcess = new Progress(); |
| 472 | |
| 473 | pg.setMinMax(0, 2); |
| 474 | pg.addProgress(pgGet, 1); |
| 475 | pg.addProgress(pgProcess, 1); |
| 476 | |
| 477 | Story story = null; |
| 478 | for (MetaData meta : getMetas(null)) { |
| 479 | if (meta.getLuid().equals(luid)) { |
| 480 | File file = getFile(luid, pgGet); |
| 481 | pgGet.done(); |
| 482 | try { |
| 483 | SupportType type = SupportType.valueOfAllOkUC(meta |
| 484 | .getType()); |
| 485 | URL url = file.toURI().toURL(); |
| 486 | if (type != null) { |
| 487 | story = BasicSupport.getSupport(type, url) // |
| 488 | .process(pgProcess); |
| 489 | |
| 490 | // Because we do not want to clear the meta cache: |
| 491 | meta.setCover(story.getMeta().getCover()); |
| 492 | meta.setResume(story.getMeta().getResume()); |
| 493 | story.setMeta(meta); |
| 494 | // |
| 495 | } else { |
| 496 | throw new IOException("Unknown type: " + meta.getType()); |
| 497 | } |
| 498 | } catch (IOException e) { |
| 499 | // We should not have not-supported files in the |
| 500 | // library |
| 501 | Instance.getTraceHandler().error( |
| 502 | new IOException("Cannot load file from library: " |
| 503 | + file, e)); |
| 504 | } finally { |
| 505 | pgProcess.done(); |
| 506 | pg.done(); |
| 507 | } |
| 508 | |
| 509 | break; |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | return story; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Import the {@link Story} at the given {@link URL} into the |
| 518 | * {@link BasicLibrary}. |
| 519 | * |
| 520 | * @param url |
| 521 | * the {@link URL} to import |
| 522 | * @param pg |
| 523 | * the optional progress reporter |
| 524 | * |
| 525 | * @return the imported {@link Story} |
| 526 | * |
| 527 | * @throws UnknownHostException |
| 528 | * if the host is not supported |
| 529 | * @throws IOException |
| 530 | * in case of I/O error |
| 531 | */ |
| 532 | public Story imprt(URL url, Progress pg) throws IOException { |
| 533 | if (pg == null) |
| 534 | pg = new Progress(); |
| 535 | |
| 536 | pg.setMinMax(0, 1000); |
| 537 | Progress pgProcess = new Progress(); |
| 538 | Progress pgSave = new Progress(); |
| 539 | pg.addProgress(pgProcess, 800); |
| 540 | pg.addProgress(pgSave, 200); |
| 541 | |
| 542 | BasicSupport support = BasicSupport.getSupport(url); |
| 543 | if (support == null) { |
| 544 | throw new UnknownHostException("" + url); |
| 545 | } |
| 546 | |
| 547 | Story story = save(support.process(pgProcess), pgSave); |
| 548 | pg.done(); |
| 549 | |
| 550 | return story; |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | * Import the story from one library to another, and keep the same LUID. |
| 555 | * |
| 556 | * @param other |
| 557 | * the other library to import from |
| 558 | * @param luid |
| 559 | * the Library UID |
| 560 | * @param pg |
| 561 | * the optional progress reporter |
| 562 | * |
| 563 | * @throws IOException |
| 564 | * in case of I/O error |
| 565 | */ |
| 566 | public void imprt(BasicLibrary other, String luid, Progress pg) |
| 567 | throws IOException { |
| 568 | Progress pgGetStory = new Progress(); |
| 569 | Progress pgSave = new Progress(); |
| 570 | if (pg == null) { |
| 571 | pg = new Progress(); |
| 572 | } |
| 573 | |
| 574 | pg.setMinMax(0, 2); |
| 575 | pg.addProgress(pgGetStory, 1); |
| 576 | pg.addProgress(pgSave, 1); |
| 577 | |
| 578 | Story story = other.getStory(luid, pgGetStory); |
| 579 | if (story != null) { |
| 580 | story = this.save(story, luid, pgSave); |
| 581 | pg.done(); |
| 582 | } else { |
| 583 | pg.done(); |
| 584 | throw new IOException("Cannot find story in Library: " + luid); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * Export the {@link Story} to the given target in the given format. |
| 590 | * |
| 591 | * @param luid |
| 592 | * the {@link Story} ID |
| 593 | * @param type |
| 594 | * the {@link OutputType} to transform it to |
| 595 | * @param target |
| 596 | * the target to save to |
| 597 | * @param pg |
| 598 | * the optional progress reporter |
| 599 | * |
| 600 | * @return the saved resource (the main saved {@link File}) |
| 601 | * |
| 602 | * @throws IOException |
| 603 | * in case of I/O error |
| 604 | */ |
| 605 | public File export(String luid, OutputType type, String target, Progress pg) |
| 606 | throws IOException { |
| 607 | Progress pgGetStory = new Progress(); |
| 608 | Progress pgOut = new Progress(); |
| 609 | if (pg != null) { |
| 610 | pg.setMax(2); |
| 611 | pg.addProgress(pgGetStory, 1); |
| 612 | pg.addProgress(pgOut, 1); |
| 613 | } |
| 614 | |
| 615 | BasicOutput out = BasicOutput.getOutput(type, false, false); |
| 616 | if (out == null) { |
| 617 | throw new IOException("Output type not supported: " + type); |
| 618 | } |
| 619 | |
| 620 | Story story = getStory(luid, pgGetStory); |
| 621 | if (story == null) { |
| 622 | throw new IOException("Cannot find story to export: " + luid); |
| 623 | } |
| 624 | |
| 625 | return out.process(story, target, pgOut); |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * Save a {@link Story} to the {@link BasicLibrary}. |
| 630 | * |
| 631 | * @param story |
| 632 | * the {@link Story} to save |
| 633 | * @param pg |
| 634 | * the optional progress reporter |
| 635 | * |
| 636 | * @return the same {@link Story}, whose LUID may have changed |
| 637 | * |
| 638 | * @throws IOException |
| 639 | * in case of I/O error |
| 640 | */ |
| 641 | public Story save(Story story, Progress pg) throws IOException { |
| 642 | return save(story, null, pg); |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | * Save a {@link Story} to the {@link BasicLibrary} -- the LUID <b>must</b> |
| 647 | * be correct, or NULL to get the next free one. |
| 648 | * <p> |
| 649 | * Will override any previous {@link Story} with the same LUID. |
| 650 | * |
| 651 | * @param story |
| 652 | * the {@link Story} to save |
| 653 | * @param luid |
| 654 | * the <b>correct</b> LUID or NULL to get the next free one |
| 655 | * @param pg |
| 656 | * the optional progress reporter |
| 657 | * |
| 658 | * @return the same {@link Story}, whose LUID may have changed |
| 659 | * |
| 660 | * @throws IOException |
| 661 | * in case of I/O error |
| 662 | */ |
| 663 | public synchronized Story save(Story story, String luid, Progress pg) |
| 664 | throws IOException { |
| 665 | |
| 666 | Instance.getTraceHandler().trace( |
| 667 | this.getClass().getSimpleName() + ": saving story " + luid); |
| 668 | |
| 669 | // Do not change the original metadata, but change the original story |
| 670 | MetaData meta = story.getMeta().clone(); |
| 671 | story.setMeta(meta); |
| 672 | |
| 673 | if (luid == null || luid.isEmpty()) { |
| 674 | meta.setLuid(String.format("%03d", getNextId())); |
| 675 | } else { |
| 676 | meta.setLuid(luid); |
| 677 | } |
| 678 | |
| 679 | if (luid != null && getInfo(luid) != null) { |
| 680 | delete(luid); |
| 681 | } |
| 682 | |
| 683 | story = doSave(story, pg); |
| 684 | |
| 685 | updateInfo(story.getMeta()); |
| 686 | |
| 687 | Instance.getTraceHandler().trace( |
| 688 | this.getClass().getSimpleName() + ": story saved (" + luid |
| 689 | + ")"); |
| 690 | |
| 691 | return story; |
| 692 | } |
| 693 | |
| 694 | /** |
| 695 | * Delete the given {@link Story} from this {@link BasicLibrary}. |
| 696 | * |
| 697 | * @param luid |
| 698 | * the LUID of the target {@link Story} |
| 699 | * |
| 700 | * @throws IOException |
| 701 | * in case of I/O error |
| 702 | */ |
| 703 | public synchronized void delete(String luid) throws IOException { |
| 704 | Instance.getTraceHandler().trace( |
| 705 | this.getClass().getSimpleName() + ": deleting story " + luid); |
| 706 | |
| 707 | doDelete(luid); |
| 708 | deleteInfo(luid); |
| 709 | |
| 710 | Instance.getTraceHandler().trace( |
| 711 | this.getClass().getSimpleName() + ": story deleted (" + luid |
| 712 | + ")"); |
| 713 | } |
| 714 | |
| 715 | /** |
| 716 | * Change the type (source) of the given {@link Story}. |
| 717 | * |
| 718 | * @param luid |
| 719 | * the {@link Story} LUID |
| 720 | * @param newSource |
| 721 | * the new source |
| 722 | * @param pg |
| 723 | * the optional progress reporter |
| 724 | * |
| 725 | * @throws IOException |
| 726 | * in case of I/O error or if the {@link Story} was not found |
| 727 | */ |
| 728 | public synchronized void changeSource(String luid, String newSource, |
| 729 | Progress pg) throws IOException { |
| 730 | MetaData meta = getInfo(luid); |
| 731 | if (meta == null) { |
| 732 | throw new IOException("Story not found: " + luid); |
| 733 | } |
| 734 | |
| 735 | meta.setSource(newSource); |
| 736 | saveMeta(meta, pg); |
| 737 | } |
| 738 | |
| 739 | /** |
| 740 | * Save back the current state of the {@link MetaData} (LUID <b>MUST NOT</b> |
| 741 | * change) for this {@link Story}. |
| 742 | * <p> |
| 743 | * By default, delete the old {@link Story} then recreate a new |
| 744 | * {@link Story}. |
| 745 | * <p> |
| 746 | * Note that this behaviour can lead to data loss. |
| 747 | * |
| 748 | * @param meta |
| 749 | * the new {@link MetaData} (LUID <b>MUST NOT</b> change) |
| 750 | * @param pg |
| 751 | * the optional {@link Progress} |
| 752 | * |
| 753 | * @throws IOException |
| 754 | * in case of I/O error or if the {@link Story} was not found |
| 755 | */ |
| 756 | protected synchronized void saveMeta(MetaData meta, Progress pg) |
| 757 | throws IOException { |
| 758 | if (pg == null) { |
| 759 | pg = new Progress(); |
| 760 | } |
| 761 | |
| 762 | Progress pgGet = new Progress(); |
| 763 | Progress pgSet = new Progress(); |
| 764 | pg.addProgress(pgGet, 50); |
| 765 | pg.addProgress(pgSet, 50); |
| 766 | |
| 767 | Story story = getStory(meta.getLuid(), pgGet); |
| 768 | if (story == null) { |
| 769 | throw new IOException("Story not found: " + meta.getLuid()); |
| 770 | } |
| 771 | |
| 772 | delete(meta.getLuid()); |
| 773 | |
| 774 | story.setMeta(meta); |
| 775 | save(story, meta.getLuid(), pgSet); |
| 776 | |
| 777 | pg.done(); |
| 778 | } |
| 779 | } |