| 1 | /* |
| 2 | * Copyright (C) 2010, 2011 Keith Kildare |
| 3 | * |
| 4 | * This file is part of SimplyDo. |
| 5 | * |
| 6 | * SimplyDo is free software: you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation, either version 3 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * SimplyDo is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with SimplyDo. If not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | package kdk.android.simplydo; |
| 21 | |
| 22 | import java.util.ArrayList; |
| 23 | import java.util.LinkedList; |
| 24 | import java.util.List; |
| 25 | |
| 26 | import android.util.Log; |
| 27 | |
| 28 | /** |
| 29 | * A cache of the database data which does the actual database calls lazily on |
| 30 | * a separate thread. On my device a database write take 300ms-450ms which is |
| 31 | * too log to hang onto the UI thread for. |
| 32 | */ |
| 33 | public class CachingDataViewer implements DataViewer |
| 34 | { |
| 35 | private DataManager dataManager; |
| 36 | |
| 37 | private List<ItemDesc> itemData = new LinkedList<ItemDesc>(); |
| 38 | private List<ListDesc> listData = new ArrayList<ListDesc>(); |
| 39 | |
| 40 | private Thread dbUpdateThread; |
| 41 | private Object viewerLock = new Object(); |
| 42 | private LinkedList<ViewerTask> taskQueue = new LinkedList<ViewerTask>(); |
| 43 | |
| 44 | // declared volatile since it is accessed in the db thread |
| 45 | // without holding the viewerLock |
| 46 | private volatile boolean running = false; |
| 47 | |
| 48 | private boolean interruptRequire = false; |
| 49 | private ListDesc selectedList; |
| 50 | |
| 51 | |
| 52 | public CachingDataViewer(DataManager dataManager) |
| 53 | { |
| 54 | this.dataManager = dataManager; |
| 55 | |
| 56 | dbUpdateThread = new Thread(new Runnable() { |
| 57 | @Override |
| 58 | public void run() |
| 59 | { |
| 60 | dbUpdateLoop(); |
| 61 | } |
| 62 | }, "DB Update"); |
| 63 | } |
| 64 | |
| 65 | |
| 66 | public void start() |
| 67 | { |
| 68 | running = true; |
| 69 | // start task queue |
| 70 | |
| 71 | dbUpdateThread.start(); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public void invalidateCache() |
| 76 | { |
| 77 | setSelectedList(null); |
| 78 | fetchLists(); |
| 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public void flush() |
| 83 | { |
| 84 | flushTasks(); |
| 85 | } |
| 86 | |
| 87 | @Override |
| 88 | public void close() |
| 89 | { |
| 90 | Log.v(L.TAG, "CachingDataView.close(): Entered"); |
| 91 | synchronized (viewerLock) |
| 92 | { |
| 93 | flushTasksNoLock(); |
| 94 | |
| 95 | running = false; |
| 96 | |
| 97 | if(interruptRequire) |
| 98 | { |
| 99 | Log.d(L.TAG, "CachingDataView.close(): Close interrupt required"); |
| 100 | dbUpdateThread.interrupt(); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | try |
| 105 | { |
| 106 | dbUpdateThread.join(); |
| 107 | } |
| 108 | catch (InterruptedException e) |
| 109 | { |
| 110 | Log.d(L.TAG, "CachingDataView.close(): shutdown join interrupted", e); |
| 111 | } |
| 112 | |
| 113 | Log.v(L.TAG, "CachingDataView.close(): Exit"); |
| 114 | } |
| 115 | |
| 116 | |
| 117 | @Override |
| 118 | public List<ItemDesc> getItemData() |
| 119 | { |
| 120 | synchronized (viewerLock) |
| 121 | { |
| 122 | return itemData; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | |
| 127 | @Override |
| 128 | public List<ListDesc> getListData() |
| 129 | { |
| 130 | synchronized (viewerLock) |
| 131 | { |
| 132 | return listData; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | |
| 137 | @Override |
| 138 | public ListDesc getSelectedList() |
| 139 | { |
| 140 | return selectedList; |
| 141 | } |
| 142 | |
| 143 | |
| 144 | @Override |
| 145 | public void setSelectedList(ListDesc selectedList) |
| 146 | { |
| 147 | flushTasks(); |
| 148 | |
| 149 | // this is ok since this thread is the only source |
| 150 | // of task and we've just flushed the task queue |
| 151 | itemData.clear(); |
| 152 | if(selectedList != null) |
| 153 | { |
| 154 | dataManager.fetchItems(selectedList.getId(), itemData); |
| 155 | } |
| 156 | |
| 157 | this.selectedList = selectedList; |
| 158 | } |
| 159 | |
| 160 | |
| 161 | @Override |
| 162 | public void fetchLists() |
| 163 | { |
| 164 | Log.v(L.TAG, "CachingDataView.fetchLists(): Entered"); |
| 165 | ViewerTask task = new ViewerTask(); |
| 166 | task.taskId = ViewerTask.FETCH_LISTS; |
| 167 | doTaskAndWait(task); |
| 168 | Log.v(L.TAG, "CachingDataView.fetchLists(): Exited"); |
| 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public ListDesc fetchList(int listId) |
| 173 | { |
| 174 | ListDesc rv = null; |
| 175 | |
| 176 | synchronized (viewerLock) |
| 177 | { |
| 178 | for(ListDesc list : listData) |
| 179 | { |
| 180 | if(listId == list.getId()) |
| 181 | { |
| 182 | rv = list; |
| 183 | break; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | return rv; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | @Override |
| 193 | public void fetchItems(int listId) |
| 194 | { |
| 195 | Log.v(L.TAG, "CachingDataViewer.fetchItems(): Entered"); |
| 196 | ViewerTask task = new ViewerTask(); |
| 197 | task.taskId = ViewerTask.FETCH_ITEMS; |
| 198 | task.args = new Object[]{listId}; |
| 199 | doTaskAndWait(task); |
| 200 | Log.v(L.TAG, "CachingDataViewer.fetchItems(): Exited"); |
| 201 | } |
| 202 | |
| 203 | |
| 204 | @Override |
| 205 | public void createItem(String label) |
| 206 | { |
| 207 | if(selectedList == null) |
| 208 | { |
| 209 | Log.e(L.TAG, "CachingDataViewer.createItem(): called but no list is selected"); |
| 210 | return; |
| 211 | } |
| 212 | |
| 213 | int listId = selectedList.getId(); |
| 214 | |
| 215 | ItemDesc newItem = new ItemDesc(-1, label, true, false); |
| 216 | |
| 217 | ViewerTask createTask = new ViewerTask(); |
| 218 | createTask.taskId = ViewerTask.CREATE_ITEM; |
| 219 | createTask.args = new Object[]{listId, label, newItem}; |
| 220 | |
| 221 | synchronized (viewerLock) |
| 222 | { |
| 223 | // queue fetch lists |
| 224 | taskQueue.add(createTask); |
| 225 | viewerLock.notifyAll(); |
| 226 | |
| 227 | itemData.add(0, newItem); |
| 228 | |
| 229 | updateListStats(); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | |
| 234 | @Override |
| 235 | public void createList(String label) |
| 236 | { |
| 237 | ViewerTask createTask = new ViewerTask(); |
| 238 | createTask.taskId = ViewerTask.CREATE_LIST; |
| 239 | createTask.args = new Object[]{label}; |
| 240 | |
| 241 | ViewerTask fetchTask = new ViewerTask(); |
| 242 | fetchTask.taskId = ViewerTask.FETCH_LISTS; |
| 243 | |
| 244 | synchronized (viewerLock) |
| 245 | { |
| 246 | // queue fetch lists |
| 247 | taskQueue.add(createTask); |
| 248 | taskQueue.add(fetchTask); |
| 249 | viewerLock.notifyAll(); |
| 250 | |
| 251 | flushTasksNoLock(); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | |
| 256 | @Override |
| 257 | public void deleteInactive() |
| 258 | { |
| 259 | if(selectedList == null) |
| 260 | { |
| 261 | Log.e(L.TAG, "CachingDataViewer.deleteInactive() called but no list is selected"); |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | ViewerTask task = new ViewerTask(); |
| 266 | task.taskId = ViewerTask.DELETE_INACTIVE; |
| 267 | task.args = new Object[]{selectedList.getId()}; |
| 268 | |
| 269 | synchronized (viewerLock) |
| 270 | { |
| 271 | // queue fetch lists |
| 272 | taskQueue.add(task); |
| 273 | viewerLock.notifyAll(); |
| 274 | |
| 275 | // update items data |
| 276 | List<ItemDesc> toDelete = new ArrayList<ItemDesc>(); |
| 277 | for(ItemDesc i : itemData) |
| 278 | { |
| 279 | if(!i.isActive()) |
| 280 | { |
| 281 | toDelete.add(i); |
| 282 | } |
| 283 | } |
| 284 | itemData.removeAll(toDelete); |
| 285 | |
| 286 | updateListStats(); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | |
| 291 | @Override |
| 292 | public void deleteItem(ItemDesc item) |
| 293 | { |
| 294 | itemIdBarrier(item); |
| 295 | |
| 296 | int itemId = item.getId(); |
| 297 | |
| 298 | ViewerTask task = new ViewerTask(); |
| 299 | task.taskId = ViewerTask.DELETE_ITEM; |
| 300 | task.args = new Object[]{itemId}; |
| 301 | |
| 302 | synchronized (viewerLock) |
| 303 | { |
| 304 | // queue fetch lists |
| 305 | taskQueue.add(task); |
| 306 | viewerLock.notifyAll(); |
| 307 | |
| 308 | // update items data |
| 309 | itemData.remove(item); |
| 310 | updateListStats(); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | |
| 315 | @Override |
| 316 | public void deleteList(int listId) |
| 317 | { |
| 318 | ViewerTask task = new ViewerTask(); |
| 319 | task.taskId = ViewerTask.DELETE_LIST; |
| 320 | task.args = new Object[]{listId}; |
| 321 | |
| 322 | synchronized (viewerLock) |
| 323 | { |
| 324 | // queue fetch lists |
| 325 | taskQueue.add(task); |
| 326 | viewerLock.notifyAll(); |
| 327 | |
| 328 | // update lists data |
| 329 | ListDesc delete = null; |
| 330 | for(ListDesc list : listData) |
| 331 | { |
| 332 | if(listId == list.getId()) |
| 333 | { |
| 334 | delete = list; |
| 335 | break; |
| 336 | } |
| 337 | } |
| 338 | listData.remove(delete); |
| 339 | } |
| 340 | |
| 341 | } |
| 342 | |
| 343 | |
| 344 | @Override |
| 345 | public void updateItemLabel(ItemDesc item, String newLabel) |
| 346 | { |
| 347 | itemIdBarrier(item); |
| 348 | int itemId = item.getId(); |
| 349 | |
| 350 | ViewerTask task = new ViewerTask(); |
| 351 | task.taskId = ViewerTask.UPDATE_ITEM_LABEL; |
| 352 | task.args = new Object[]{itemId, newLabel}; |
| 353 | |
| 354 | synchronized (viewerLock) |
| 355 | { |
| 356 | // queue fetch lists |
| 357 | taskQueue.add(task); |
| 358 | viewerLock.notifyAll(); |
| 359 | |
| 360 | // update items data |
| 361 | item.setLabel(newLabel); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | |
| 366 | @Override |
| 367 | public void moveItem(ItemDesc item, int toListId) |
| 368 | { |
| 369 | itemIdBarrier(item); |
| 370 | int itemId = item.getId(); |
| 371 | |
| 372 | ViewerTask task = new ViewerTask(); |
| 373 | task.taskId = ViewerTask.MOVE_ITEM; |
| 374 | task.args = new Object[]{itemId, toListId}; |
| 375 | |
| 376 | synchronized (viewerLock) |
| 377 | { |
| 378 | // queue fetch lists |
| 379 | taskQueue.add(task); |
| 380 | viewerLock.notifyAll(); |
| 381 | |
| 382 | // remove from items data |
| 383 | ItemDesc itemInList = null; |
| 384 | for(ItemDesc i : itemData) |
| 385 | { |
| 386 | if(itemId == i.getId()) |
| 387 | { |
| 388 | itemInList = i; |
| 389 | break; |
| 390 | } |
| 391 | } |
| 392 | if(itemInList != null) |
| 393 | { |
| 394 | itemData.remove(itemInList); |
| 395 | updateListStats(); |
| 396 | ListDesc toList = findList(toListId); |
| 397 | toList.setTotalItems(toList.getTotalItems() + 1); |
| 398 | if(itemInList.isActive()) |
| 399 | { |
| 400 | toList.setActiveItems(toList.getActiveItems() + 1); |
| 401 | } |
| 402 | } |
| 403 | else |
| 404 | { |
| 405 | Log.w(L.TAG, "CachingDataViewer.moveItem(): Didn't find item in current item data"); |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | |
| 411 | @Override |
| 412 | public void updateListLabel(int listId, String newLabel) |
| 413 | { |
| 414 | ViewerTask task = new ViewerTask(); |
| 415 | task.taskId = ViewerTask.UPDATE_LIST_LABEL; |
| 416 | task.args = new Object[]{listId, newLabel}; |
| 417 | |
| 418 | synchronized (viewerLock) |
| 419 | { |
| 420 | // queue fetch lists |
| 421 | taskQueue.add(task); |
| 422 | viewerLock.notifyAll(); |
| 423 | |
| 424 | // update items data |
| 425 | for(ListDesc i : listData) |
| 426 | { |
| 427 | if(listId == i.getId()) |
| 428 | { |
| 429 | i.setLabel(newLabel); |
| 430 | break; |
| 431 | } |
| 432 | } |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | |
| 437 | @Override |
| 438 | public void updateItemActiveness(ItemDesc item, boolean active) |
| 439 | { |
| 440 | itemIdBarrier(item); |
| 441 | int itemId = item.getId(); |
| 442 | |
| 443 | ViewerTask task = new ViewerTask(); |
| 444 | task.taskId = ViewerTask.UPDATE_ACTIVENESS; |
| 445 | task.args = new Object[]{itemId, active}; |
| 446 | |
| 447 | synchronized (viewerLock) |
| 448 | { |
| 449 | // queue fetch lists |
| 450 | taskQueue.add(task); |
| 451 | viewerLock.notifyAll(); |
| 452 | |
| 453 | // update items data |
| 454 | item.setActive(active); |
| 455 | |
| 456 | // update lists data |
| 457 | if(selectedList != null) |
| 458 | { |
| 459 | int activeItems = selectedList.getActiveItems(); |
| 460 | activeItems += active?1:-1; |
| 461 | selectedList.setActiveItems(activeItems); |
| 462 | } |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | |
| 467 | @Override |
| 468 | public void updateItemStarness(ItemDesc item, boolean star) |
| 469 | { |
| 470 | itemIdBarrier(item); |
| 471 | int itemId = item.getId(); |
| 472 | |
| 473 | ViewerTask task = new ViewerTask(); |
| 474 | task.taskId = ViewerTask.UPDATE_STARNESS; |
| 475 | task.args = new Object[]{itemId, star}; |
| 476 | |
| 477 | synchronized (viewerLock) |
| 478 | { |
| 479 | // queue fetch lists |
| 480 | taskQueue.add(task); |
| 481 | viewerLock.notifyAll(); |
| 482 | |
| 483 | // update items data |
| 484 | item.setStar(star); |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | |
| 489 | private void itemIdBarrier(ItemDesc item) |
| 490 | { |
| 491 | if(item.getId() == -1) |
| 492 | { |
| 493 | Log.v(L.TAG, "CachingDataViewer.itemIdBarrier(): Used"); |
| 494 | flushTasks(); |
| 495 | |
| 496 | if(item.getId() == -1) |
| 497 | { |
| 498 | Log.e(L.TAG, "CachingDataViewer.itemIdBarrier(): failed!"); |
| 499 | } |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | |
| 504 | private void flushTasksNoLock() |
| 505 | { |
| 506 | while(taskQueue.size() != 0) |
| 507 | { |
| 508 | try |
| 509 | { |
| 510 | viewerLock.wait(200); |
| 511 | } |
| 512 | catch (InterruptedException e) |
| 513 | { |
| 514 | Log.e(L.TAG, "CachingDataViewer.flushTasksNoLock(): Exception waiting for flushTasksNoLock()", e); |
| 515 | } |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | private void flushTasks() |
| 520 | { |
| 521 | synchronized (viewerLock) |
| 522 | { |
| 523 | flushTasksNoLock(); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | private void updateListStats() |
| 528 | { |
| 529 | updateListStats(selectedList); |
| 530 | } |
| 531 | |
| 532 | private ListDesc findList(int listId) |
| 533 | { |
| 534 | ListDesc rvList = null; |
| 535 | for(ListDesc list : listData) |
| 536 | { |
| 537 | if(list.getId() == listId) |
| 538 | { |
| 539 | rvList = list; |
| 540 | break; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | return rvList; |
| 545 | } |
| 546 | |
| 547 | |
| 548 | private void updateListStats(ListDesc listDesc) |
| 549 | { |
| 550 | listDesc.setTotalItems(itemData.size()); |
| 551 | int active = 0; |
| 552 | for(ItemDesc item : itemData) |
| 553 | { |
| 554 | if(item.isActive()) |
| 555 | { |
| 556 | active++; |
| 557 | } |
| 558 | } |
| 559 | listDesc.setActiveItems(active); |
| 560 | } |
| 561 | |
| 562 | |
| 563 | private void doTaskAndWait(ViewerTask task) |
| 564 | { |
| 565 | synchronized (viewerLock) |
| 566 | { |
| 567 | taskQueue.add(task); |
| 568 | viewerLock.notifyAll(); |
| 569 | |
| 570 | try |
| 571 | { |
| 572 | while(!task.done) |
| 573 | { |
| 574 | viewerLock.wait(); |
| 575 | } |
| 576 | } |
| 577 | catch(InterruptedException e) |
| 578 | { |
| 579 | Log.e(L.TAG, "CachingDataViewer.doTaskAndWait(): Error waiting for task", e); |
| 580 | } |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | |
| 585 | private void dbUpdateLoop() |
| 586 | { |
| 587 | Log.v(L.TAG, "CachingDataViewer.dbUpdateLoop(): Entered"); |
| 588 | while(running) |
| 589 | { |
| 590 | try |
| 591 | { |
| 592 | // get task |
| 593 | ViewerTask task; |
| 594 | synchronized (viewerLock) |
| 595 | { |
| 596 | while(taskQueue.size() == 0) |
| 597 | { |
| 598 | interruptRequire = true; |
| 599 | viewerLock.wait(); |
| 600 | interruptRequire = false; |
| 601 | } |
| 602 | task = taskQueue.peek(); |
| 603 | } |
| 604 | |
| 605 | boolean doNotify = true; |
| 606 | try |
| 607 | { |
| 608 | // do it |
| 609 | switch(task.taskId) |
| 610 | { |
| 611 | case ViewerTask.FETCH_LISTS: |
| 612 | { |
| 613 | List<ListDesc> lists = dataManager.fetchLists(); |
| 614 | synchronized (viewerLock) |
| 615 | { |
| 616 | listData = lists; |
| 617 | task.done = true; |
| 618 | viewerLock.notifyAll(); |
| 619 | } |
| 620 | doNotify = false; |
| 621 | break; |
| 622 | } |
| 623 | case ViewerTask.FETCH_ITEMS: |
| 624 | { |
| 625 | synchronized (viewerLock) |
| 626 | { |
| 627 | itemData.clear(); |
| 628 | dataManager.fetchItems((Integer)task.args[0], itemData); |
| 629 | task.done = true; |
| 630 | viewerLock.notifyAll(); |
| 631 | } |
| 632 | doNotify = false; |
| 633 | break; |
| 634 | } |
| 635 | case ViewerTask.UPDATE_ACTIVENESS: |
| 636 | { |
| 637 | dataManager.updateItemActiveness((Integer)task.args[0], (Boolean)task.args[1]); |
| 638 | task.done = true; |
| 639 | break; |
| 640 | } |
| 641 | case ViewerTask.UPDATE_STARNESS: |
| 642 | { |
| 643 | dataManager.updateItemStarness((Integer)task.args[0], (Boolean)task.args[1]); |
| 644 | task.done = true; |
| 645 | break; |
| 646 | } |
| 647 | case ViewerTask.UPDATE_ITEM_LABEL: |
| 648 | { |
| 649 | dataManager.updateItemLabel((Integer)task.args[0], (String)task.args[1]); |
| 650 | task.done = true; |
| 651 | break; |
| 652 | } |
| 653 | case ViewerTask.UPDATE_LIST_LABEL: |
| 654 | { |
| 655 | dataManager.updateListLabel((Integer)task.args[0], (String)task.args[1]); |
| 656 | task.done = true; |
| 657 | break; |
| 658 | } |
| 659 | case ViewerTask.MOVE_ITEM: |
| 660 | { |
| 661 | dataManager.moveItem((Integer)task.args[0], (Integer)task.args[1]); |
| 662 | task.done = true; |
| 663 | break; |
| 664 | } |
| 665 | case ViewerTask.DELETE_LIST: |
| 666 | { |
| 667 | dataManager.deleteList((Integer)task.args[0]); |
| 668 | task.done = true; |
| 669 | break; |
| 670 | } |
| 671 | case ViewerTask.DELETE_ITEM: |
| 672 | { |
| 673 | dataManager.deleteItem((Integer)task.args[0]); |
| 674 | task.done = true; |
| 675 | break; |
| 676 | } |
| 677 | case ViewerTask.DELETE_INACTIVE: |
| 678 | { |
| 679 | dataManager.deleteInactive((Integer)task.args[0]); |
| 680 | task.done = true; |
| 681 | break; |
| 682 | } |
| 683 | case ViewerTask.CREATE_LIST: |
| 684 | { |
| 685 | dataManager.createList((String)task.args[0]); |
| 686 | task.done = true; |
| 687 | break; |
| 688 | } |
| 689 | case ViewerTask.CREATE_ITEM: |
| 690 | { |
| 691 | ItemDesc item = (ItemDesc)task.args[2]; |
| 692 | int id = dataManager.createItem((Integer)task.args[0], (String)task.args[1]); |
| 693 | item.setId(id); |
| 694 | task.done = true; |
| 695 | break; |
| 696 | } |
| 697 | default: |
| 698 | Log.w(L.TAG, "CachingDataViewer.dbUpdateLoop(): Unknown task enumeration " + task.taskId); |
| 699 | } |
| 700 | } |
| 701 | finally |
| 702 | { |
| 703 | synchronized (viewerLock) |
| 704 | { |
| 705 | taskQueue.remove(); |
| 706 | if(doNotify) |
| 707 | { |
| 708 | viewerLock.notifyAll(); |
| 709 | } |
| 710 | } |
| 711 | } |
| 712 | } |
| 713 | catch(InterruptedException e) |
| 714 | { |
| 715 | if(running) |
| 716 | { |
| 717 | Log.e(L.TAG, "CachingDataViewer.dbUpdateLoop(): Interrupted in DB update loop", e); |
| 718 | } |
| 719 | else |
| 720 | { |
| 721 | Log.d(L.TAG, "CachingDataViewer.dbUpdateLoop(): interrupt exit"); |
| 722 | } |
| 723 | } |
| 724 | catch(Exception e) |
| 725 | { |
| 726 | Log.e(L.TAG, "CachingDataViewer.dbUpdateLoop(): Exception in DB update loop", e); |
| 727 | } |
| 728 | } |
| 729 | Log.v(L.TAG, "CachingDataViewer.dbUpdateLoop(): Exit"); |
| 730 | } |
| 731 | |
| 732 | |
| 733 | private static class ViewerTask |
| 734 | { |
| 735 | private static final int FETCH_LISTS = 0; |
| 736 | private static final int FETCH_ITEMS = 1; |
| 737 | private static final int UPDATE_ACTIVENESS = 2; |
| 738 | private static final int UPDATE_ITEM_LABEL = 3; |
| 739 | private static final int UPDATE_LIST_LABEL = 4; |
| 740 | private static final int DELETE_LIST = 5; |
| 741 | private static final int DELETE_ITEM = 6; |
| 742 | private static final int DELETE_INACTIVE = 7; |
| 743 | private static final int CREATE_LIST = 8; |
| 744 | private static final int CREATE_ITEM = 9; |
| 745 | private static final int UPDATE_STARNESS = 10; |
| 746 | private static final int MOVE_ITEM = 11; |
| 747 | |
| 748 | private int taskId; |
| 749 | private Object[] args; |
| 750 | private boolean done = false; |
| 751 | } |
| 752 | |
| 753 | } |