src/com/owncloud/android/datamodel/FileDataStorageManager.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.datamodel;
  20
  21 import java.io.File;
  22 import java.util.ArrayList;
  23 import java.util.Collection;
  24 import java.util.Collections;
  25 import java.util.Iterator;
  26 import java.util.Vector;
  27
  28 import com.owncloud.android.Log_OC;
  29 import com.owncloud.android.db.ProviderMeta;
  30 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  31 import com.owncloud.android.utils.FileStorageUtils;
  32
  33 import android.accounts.Account;
  34 import android.content.ContentProviderClient;
  35 import android.content.ContentProviderOperation;
  36 import android.content.ContentProviderResult;
  37 import android.content.ContentResolver;
  38 import android.content.ContentUris;
  39 import android.content.ContentValues;
  40 import android.content.OperationApplicationException;
  41 import android.database.Cursor;
  42 import android.net.Uri;
  43 import android.os.RemoteException;
  44
  45 public class FileDataStorageManager {
  46
  47     public static final int ROOT_PARENT_ID = 0;
  48
  49     private ContentResolver mContentResolver;
  50     private ContentProviderClient mContentProviderClient;
  51     private Account mAccount;
  52
  53     private static String TAG = FileDataStorageManager.class.getSimpleName();
  54
  55
  56     public FileDataStorageManager(Account account, ContentResolver cr) {
  57         mContentProviderClient = null;
  58         mContentResolver = cr;
  59         mAccount = account;
  60     }
  61
  62     public FileDataStorageManager(Account account, ContentProviderClient cp) {
  63         mContentProviderClient = cp;
  64         mContentResolver = null;
  65         mAccount = account;
  66     }
  67
  68
  69     public void setAccount(Account account) {
  70         mAccount = account;
  71     }
  72
  73     public Account getAccount() {
  74         return mAccount;
  75     }
  76
  77     public void setContentResolver(ContentResolver cr) {
  78         mContentResolver = cr;
  79     }
  80
  81     public ContentResolver getContentResolver() {
  82         return mContentResolver;
  83     }
  84
  85     public void setContentProviderClient(ContentProviderClient cp) {
  86         mContentProviderClient = cp;
  87     }
  88
  89     public ContentProviderClient getContentProviderClient() {
  90         return mContentProviderClient;
  91     }
  92
  93
  94     public OCFile getFileByPath(String path) {
  95         Cursor c = getCursorForValue(ProviderTableMeta.FILE_PATH, path);
  96         OCFile file = null;
  97         if (c.moveToFirst()) {
  98             file = createFileInstance(c);
  99         }
 100         c.close();
 101         if (file == null && OCFile.ROOT_PATH.equals(path)) {
 102             return createRootDir(); // root should always exist
 103         }
 104         return file;
 105     }
 106
 107
 108     public OCFile getFileById(long id) {
 109         Cursor c = getCursorForValue(ProviderTableMeta._ID, String.valueOf(id));
 110         OCFile file = null;
 111         if (c.moveToFirst()) {
 112             file = createFileInstance(c);
 113         }
 114         c.close();
 115         return file;
 116     }
 117
 118     public OCFile getFileByLocalPath(String path) {
 119         Cursor c = getCursorForValue(ProviderTableMeta.FILE_STORAGE_PATH, path);
 120         OCFile file = null;
 121         if (c.moveToFirst()) {
 122             file = createFileInstance(c);
 123         }
 124         c.close();
 125         return file;
 126     }
 127
 128     public boolean fileExists(long id) {
 129         return fileExists(ProviderTableMeta._ID, String.valueOf(id));
 130     }
 131
 132     public boolean fileExists(String path) {
 133         return fileExists(ProviderTableMeta.FILE_PATH, path);
 134     }
 135
 136
 137     public Vector<OCFile> getFolderContent(OCFile f) {
 138         if (f != null && f.isFolder() && f.getFileId() != -1) {
 139             return getFolderContent(f.getFileId());
 140
 141         } else {
 142             return new Vector<OCFile>();
 143         }
 144     }
 145
 146
 147     public Vector<OCFile> getFolderImages(OCFile folder) {
 148         Vector<OCFile> ret = new Vector<OCFile>();
 149         if (folder != null) {
 150             // TODO better implementation, filtering in the access to database (if possible) instead of here
 151             Vector<OCFile> tmp = getFolderContent(folder);
 152             OCFile current = null;
 153             for (int i=0; i<tmp.size(); i++) {
 154                 current = tmp.get(i);
 155                 if (current.isImage()) {
 156                     ret.add(current);
 157                 }
 158             }
 159         }
 160         return ret;
 161     }
 162
 163
 164     public boolean saveFile(OCFile file) {
 165         boolean overriden = false;
 166         ContentValues cv = new ContentValues();
 167         cv.put(ProviderTableMeta.FILE_MODIFIED, file.getModificationTimestamp());
 168         cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, file.getModificationTimestampAtLastSyncForData());
 169         cv.put(ProviderTableMeta.FILE_CREATION, file.getCreationTimestamp());
 170         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, file.getFileLength());
 171         cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, file.getMimetype());
 172         cv.put(ProviderTableMeta.FILE_NAME, file.getFileName());
 173         //if (file.getParentId() != DataStorageManager.ROOT_PARENT_ID)
 174             cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
 175         cv.put(ProviderTableMeta.FILE_PATH, file.getRemotePath());
 176         if (!file.isFolder())
 177             cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
 178         cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
 179         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDateForProperties());
 180         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, file.getLastSyncDateForData());
 181         cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, file.keepInSync() ? 1 : 0);
 182         cv.put(ProviderTableMeta.FILE_ETAG, file.getEtag());
 183
 184         boolean sameRemotePath = fileExists(file.getRemotePath());
 185         if (sameRemotePath ||
 186                 fileExists(file.getFileId())        ) {           // for renamed files; no more delete and create
 187
 188             OCFile oldFile = null;
 189             if (sameRemotePath) {
 190                 oldFile = getFileByPath(file.getRemotePath());
 191                 file.setFileId(oldFile.getFileId());
 192             } else {
 193                 oldFile = getFileById(file.getFileId());
 194             }
 195
 196             overriden = true;
 197             if (getContentResolver() != null) {
 198                 getContentResolver().update(ProviderTableMeta.CONTENT_URI, cv,
 199                         ProviderTableMeta._ID + "=?",
 200                         new String[] { String.valueOf(file.getFileId()) });
 201             } else {
 202                 try {
 203                     getContentProviderClient().update(ProviderTableMeta.CONTENT_URI,
 204                             cv, ProviderTableMeta._ID + "=?",
 205                             new String[] { String.valueOf(file.getFileId()) });
 206                 } catch (RemoteException e) {
 207                     Log_OC.e(TAG,
 208                             "Fail to insert insert file to database "
 209                                     + e.getMessage());
 210                 }
 211             }
 212         } else {
 213             Uri result_uri = null;
 214             if (getContentResolver() != null) {
 215                 result_uri = getContentResolver().insert(
 216                         ProviderTableMeta.CONTENT_URI_FILE, cv);
 217             } else {
 218                 try {
 219                     result_uri = getContentProviderClient().insert(
 220                             ProviderTableMeta.CONTENT_URI_FILE, cv);
 221                 } catch (RemoteException e) {
 222                     Log_OC.e(TAG,
 223                             "Fail to insert insert file to database "
 224                                     + e.getMessage());
 225                 }
 226             }
 227             if (result_uri != null) {
 228                 long new_id = Long.parseLong(result_uri.getPathSegments()
 229                         .get(1));
 230                 file.setFileId(new_id);
 231             }
 232         }
 233
 234         if (file.isFolder()) {
 235             updateFolderSize(file.getFileId());
 236         } else {
 237             updateFolderSize(file.getParentId());
 238         }
 239
 240         return overriden;
 241     }
 242
 243
 244     /**
 245      * Inserts or updates the list of files contained in a given folder.
 246      *
 247      * @param folder
 248      * @param files
 249      * @param removeNotUpdated
 250      */
 251     public void saveFolder(OCFile folder, Collection<OCFile> updatedFiles, Collection<OCFile> filesToRemove) {
 252
 253         Log_OC.d(TAG,  "Saving folder " + folder.getRemotePath() + " with " + updatedFiles.size() + " children and " + filesToRemove.size() + " files to remove");
 254
 255         ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(updatedFiles.size());
 256
 257         // prepare operations to insert or update files to save in the given folder
 258         for (OCFile file : updatedFiles) {
 259             ContentValues cv = new ContentValues();
 260             cv.put(ProviderTableMeta.FILE_MODIFIED, file.getModificationTimestamp());
 261             cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, file.getModificationTimestampAtLastSyncForData());
 262             cv.put(ProviderTableMeta.FILE_CREATION, file.getCreationTimestamp());
 263             cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, file.getFileLength());
 264             cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, file.getMimetype());
 265             cv.put(ProviderTableMeta.FILE_NAME, file.getFileName());
 266             //cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
 267             cv.put(ProviderTableMeta.FILE_PARENT, folder.getFileId());
 268             cv.put(ProviderTableMeta.FILE_PATH, file.getRemotePath());
 269             if (!file.isFolder()) {
 270                 cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
 271             }
 272             cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
 273             cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDateForProperties());
 274             cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, file.getLastSyncDateForData());
 275             cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, file.keepInSync() ? 1 : 0);
 276             cv.put(ProviderTableMeta.FILE_ETAG, file.getEtag());
 277
 278             boolean existsByPath = fileExists(file.getRemotePath());
 279             if (existsByPath || fileExists(file.getFileId())) {
 280                 // updating an existing file
 281
 282                 /* CALLER IS THE RESPONSIBLE FOR GRANTING RIGHT UPDATE OF INFORMATION, NOT THIS METHOD.
 283                  *
 284                  * HERE ONLY DATA CONSISTENCY SHOULD BE GRANTED
 285                  */
 286                 /*
 287                 OCFile oldFile = null;
 288                 if (existsByPath) {
 289                     // grant same id
 290                     oldFile = getFileByPath(file.getRemotePath());
 291                     file.setFileId(oldFile.getFileId());
 292                 } else {
 293                     oldFile = getFileById(file.getFileId());
 294                 }
 295
 296                 if (file.isFolder()) {
 297                     // folders keep size information, since it's calculated
 298                     file.setFileLength(oldFile.getFileLength());
 299                     cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, oldFile.getFileLength());
 300
 301                 } else if (file.getStoragePath() == null && oldFile.getStoragePath() != null) {
 302                     // regular files keep access to local contents, although it's lost in the new OCFile
 303                     file.setStoragePath(oldFile.getStoragePath());
 304                     cv.put(ProviderTableMeta.FILE_STORAGE_PATH, oldFile.getStoragePath());
 305                 }
 306                 */
 307
 308                 operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 309                         withValues(cv).
 310                         withSelection(  ProviderTableMeta._ID + "=?",
 311                                 new String[] { String.valueOf(file.getFileId()) })
 312                                 .build());
 313
 314             } else {
 315                 // adding a new file
 316                 operations.add(ContentProviderOperation.newInsert(ProviderTableMeta.CONTENT_URI).withValues(cv).build());
 317             }
 318         }
 319
 320         // prepare operations to remove files in the given folder
 321         String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 322         String [] whereArgs = null;
 323         for (OCFile file : filesToRemove) {
 324             if (file.getParentId() == folder.getFileId()) {
 325                 whereArgs = new String[]{mAccount.name, file.getRemotePath()};
 326                 //Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, "" + file.getFileId());
 327                 if (file.isFolder()) {
 328                     operations.add(ContentProviderOperation
 329                                     .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_DIR, file.getFileId())).withSelection(where, whereArgs)
 330                                         .build());
 331                     // TODO remove local folder
 332                 } else {
 333                     operations.add(ContentProviderOperation
 334                                     .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId())).withSelection(where, whereArgs)
 335                                         .build());
 336                     if (file.isDown()) {
 337                         new File(file.getStoragePath()).delete();
 338                         // TODO move the deletion of local contents after success of deletions
 339                     }
 340                 }
 341             }
 342         }
 343
 344         // update metadata of folder
 345         ContentValues cv = new ContentValues();
 346         cv.put(ProviderTableMeta.FILE_MODIFIED, folder.getModificationTimestamp());
 347         cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, folder.getModificationTimestampAtLastSyncForData());
 348         cv.put(ProviderTableMeta.FILE_CREATION, folder.getCreationTimestamp());
 349         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, 0);   // FileContentProvider calculates the right size
 350         cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, folder.getMimetype());
 351         cv.put(ProviderTableMeta.FILE_NAME, folder.getFileName());
 352         cv.put(ProviderTableMeta.FILE_PARENT, folder.getParentId());
 353         cv.put(ProviderTableMeta.FILE_PATH, folder.getRemotePath());
 354         cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
 355         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, folder.getLastSyncDateForProperties());
 356         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, folder.getLastSyncDateForData());
 357         cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, folder.keepInSync() ? 1 : 0);
 358         cv.put(ProviderTableMeta.FILE_ETAG, folder.getEtag());
 359         operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 360                 withValues(cv).
 361                 withSelection(  ProviderTableMeta._ID + "=?",
 362                         new String[] { String.valueOf(folder.getFileId()) })
 363                         .build());
 364
 365         // apply operations in batch
 366         ContentProviderResult[] results = null;
 367         Log_OC.d(TAG, "Sending " + operations.size() + " operations to FileContentProvider");
 368         try {
 369             if (getContentResolver() != null) {
 370                 results = getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
 371
 372             } else {
 373                 results = getContentProviderClient().applyBatch(operations);
 374             }
 375
 376         } catch (OperationApplicationException e) {
 377             Log_OC.e(TAG, "Exception in batch of operations " + e.getMessage());
 378
 379         } catch (RemoteException e) {
 380             Log_OC.e(TAG, "Exception in batch of operations  " + e.getMessage());
 381         }
 382
 383         // update new id in file objects for insertions
 384         if (results != null) {
 385             long newId;
 386             Iterator<OCFile> filesIt = updatedFiles.iterator();
 387             OCFile file = null;
 388             for (int i=0; i<results.length; i++) {
 389                 if (filesIt.hasNext()) {
 390                     file = filesIt.next();
 391                 } else {
 392                     file = null;
 393                 }
 394                 if (results[i].uri != null) {
 395                     newId = Long.parseLong(results[i].uri.getPathSegments().get(1));
 396                     //updatedFiles.get(i).setFileId(newId);
 397                     if (file != null) {
 398                         file.setFileId(newId);
 399                     }
 400                 }
 401             }
 402         }
 403
 404         updateFolderSize(folder.getFileId());
 405
 406     }
 407
 408
 409     /**
 410      *
 411      * @param id
 412      */
 413     private void updateFolderSize(long id) {
 414         if (id > FileDataStorageManager.ROOT_PARENT_ID) {
 415             Log_OC.d(TAG, "Updating size of " + id);
 416             if (getContentResolver() != null) {
 417                 getContentResolver().update(ProviderTableMeta.CONTENT_URI_DIR, null,
 418                         ProviderTableMeta._ID + "=?",
 419                         new String[] { String.valueOf(id) });
 420             } else {
 421                 try {
 422                     getContentProviderClient().update(ProviderTableMeta.CONTENT_URI_DIR, null,
 423                         ProviderTableMeta._ID + "=?",
 424                         new String[] { String.valueOf(id) });
 425
 426                 } catch (RemoteException e) {
 427                     Log_OC.e(TAG, "Exception in update of folder size through compatibility patch " + e.getMessage());
 428                 }
 429             }
 430         } else {
 431             Log_OC.e(TAG,  "not updating size for folder " + id);
 432         }
 433     }
 434
 435
 436     public void removeFile(OCFile file, boolean removeDBData, boolean removeLocalCopy) {
 437         if (file != null) {
 438             if (file.isFolder()) {
 439                 removeFolder(file, removeDBData, removeLocalCopy);
 440
 441             } else {
 442                 if (removeDBData) {
 443                     //Uri file_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, ""+file.getFileId());
 444                     Uri file_uri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId());
 445                     String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 446                     String [] whereArgs = new String[]{mAccount.name, file.getRemotePath()};
 447                     if (getContentProviderClient() != null) {
 448                         try {
 449                             getContentProviderClient().delete(file_uri, where, whereArgs);
 450                         } catch (RemoteException e) {
 451                             e.printStackTrace();
 452                         }
 453                     } else {
 454                         getContentResolver().delete(file_uri, where, whereArgs);
 455                     }
 456                     updateFolderSize(file.getParentId());
 457                 }
 458                 if (removeLocalCopy && file.isDown()) {
 459                     boolean success = new File(file.getStoragePath()).delete();
 460                     if (!removeDBData && success) {
 461                         // maybe unnecessary, but should be checked TODO remove if unnecessary
 462                         file.setStoragePath(null);
 463                         saveFile(file);
 464                     }
 465                 }
 466             }
 467         }
 468     }
 469
 470
 471     public void removeFolder(OCFile folder, boolean removeDBData, boolean removeLocalContent) {
 472         if (folder != null && folder.isFolder()) {
 473             if (removeDBData &&  folder.getFileId() != -1) {
 474                 removeFolderInDb(folder);
 475             }
 476             if (removeLocalContent) {
 477                 File localFolder = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, folder));
 478                 removeLocalFolder(localFolder);
 479             }
 480         }
 481     }
 482
 483     private void removeFolderInDb(OCFile folder) {
 484         Uri folder_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_DIR, ""+ folder.getFileId());   // URI for recursive deletion
 485         String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 486         String [] whereArgs = new String[]{mAccount.name, folder.getRemotePath()};
 487         if (getContentProviderClient() != null) {
 488             try {
 489                 getContentProviderClient().delete(folder_uri, where, whereArgs);
 490             } catch (RemoteException e) {
 491                 e.printStackTrace();
 492             }
 493         } else {
 494             getContentResolver().delete(folder_uri, where, whereArgs);
 495         }
 496         updateFolderSize(folder.getParentId());
 497     }
 498
 499     private void removeLocalFolder(File folder) {
 500         if (folder.exists()) {
 501             File[] files = folder.listFiles();
 502             if (files != null) {
 503                 for (File file : files) {
 504                     if (file.isDirectory()) {
 505                         removeLocalFolder(file);
 506                     } else {
 507                         file.delete();
 508                     }
 509                 }
 510             }
 511             folder.delete();
 512         }
 513     }
 514
 515     /**
 516      * Updates database for a folder that was moved to a different location.
 517      *
 518      * TODO explore better (faster) implementations
 519      * TODO throw exceptions up !
 520      */
 521     public void moveFolder(OCFile folder, String newPath) {
 522         // TODO check newPath
 523
 524         if (folder != null && folder.isFolder() && folder.fileExists() && !OCFile.ROOT_PATH.equals(folder.getFileName())) {
 525             /// 1. get all the descendants of 'dir' in a single QUERY (including 'dir')
 526             Cursor c = null;
 527             if (getContentProviderClient() != null) {
 528                 try {
 529                     c = getContentProviderClient().query(ProviderTableMeta.CONTENT_URI,
 530                             null,
 531                             ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
 532                             new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
 533                 } catch (RemoteException e) {
 534                     Log_OC.e(TAG, e.getMessage());
 535                 }
 536             } else {
 537                 c = getContentResolver().query(ProviderTableMeta.CONTENT_URI,
 538                         null,
 539                         ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
 540                         new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
 541             }
 542
 543             /// 2. prepare a batch of update operations to change all the descendants
 544             ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(c.getCount());
 545             int lengthOfOldPath = folder.getRemotePath().length();
 546             String defaultSavePath = FileStorageUtils.getSavePath(mAccount.name);
 547             int lengthOfOldStoragePath = defaultSavePath.length() + lengthOfOldPath;
 548             if (c.moveToFirst()) {
 549                 do {
 550                     ContentValues cv = new ContentValues(); // don't take the constructor out of the loop and clear the object
 551                     OCFile child = createFileInstance(c);
 552                     cv.put(ProviderTableMeta.FILE_PATH, newPath + child.getRemotePath().substring(lengthOfOldPath));
 553                     if (child.getStoragePath() != null && child.getStoragePath().startsWith(defaultSavePath)) {
 554                         cv.put(ProviderTableMeta.FILE_STORAGE_PATH, defaultSavePath + newPath + child.getStoragePath().substring(lengthOfOldStoragePath));
 555                     }
 556                     operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 557                             withValues(cv).
 558                             withSelection(  ProviderTableMeta._ID + "=?",
 559                                     new String[] { String.valueOf(child.getFileId()) })
 560                                     .build());
 561                 } while (c.moveToNext());
 562             }
 563             c.close();
 564
 565             /// 3. apply updates in batch
 566             try {
 567                 if (getContentResolver() != null) {
 568                     getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
 569
 570                 } else {
 571                     getContentProviderClient().applyBatch(operations);
 572                 }
 573
 574             } catch (OperationApplicationException e) {
 575                 Log_OC.e(TAG, "Fail to update descendants of " + folder.getFileId() + " in database", e);
 576
 577             } catch (RemoteException e) {
 578                 Log_OC.e(TAG, "Fail to update desendants of " + folder.getFileId() + " in database", e);
 579             }
 580
 581         }
 582     }
 583
 584
 585     private Vector<OCFile> getFolderContent(long parentId) {
 586
 587         Vector<OCFile> ret = new Vector<OCFile>();
 588
 589         Uri req_uri = Uri.withAppendedPath(
 590                 ProviderTableMeta.CONTENT_URI_DIR,
 591                 String.valueOf(parentId));
 592         Cursor c = null;
 593
 594         if (getContentProviderClient() != null) {
 595             try {
 596                 c = getContentProviderClient().query(req_uri, null,
 597                         ProviderTableMeta.FILE_PARENT + "=?" ,
 598                         new String[] { String.valueOf(parentId)}, null);
 599             } catch (RemoteException e) {
 600                 Log_OC.e(TAG, e.getMessage());
 601                 return ret;
 602             }
 603         } else {
 604             c = getContentResolver().query(req_uri, null,
 605                     ProviderTableMeta.FILE_PARENT + "=?" ,
 606                     new String[] { String.valueOf(parentId)}, null);
 607         }
 608
 609         if (c.moveToFirst()) {
 610             do {
 611                 OCFile child = createFileInstance(c);
 612                 ret.add(child);
 613             } while (c.moveToNext());
 614         }
 615
 616         c.close();
 617
 618         Collections.sort(ret);
 619
 620         return ret;
 621     }
 622
 623
 624     private OCFile createRootDir() {
 625         OCFile file = new OCFile(OCFile.ROOT_PATH);
 626         file.setMimetype("DIR");
 627         file.setParentId(FileDataStorageManager.ROOT_PARENT_ID);
 628         saveFile(file);
 629         return file;
 630     }
 631
 632     private boolean fileExists(String cmp_key, String value) {
 633         Cursor c;
 634         if (getContentResolver() != null) {
 635             c = getContentResolver()
 636                     .query(ProviderTableMeta.CONTENT_URI,
 637                             null,
 638                             cmp_key + "=? AND "
 639                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
 640                                     + "=?",
 641                                     new String[] { value, mAccount.name }, null);
 642         } else {
 643             try {
 644                 c = getContentProviderClient().query(
 645                         ProviderTableMeta.CONTENT_URI,
 646                         null,
 647                         cmp_key + "=? AND "
 648                                 + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
 649                                 new String[] { value, mAccount.name }, null);
 650             } catch (RemoteException e) {
 651                 Log_OC.e(TAG,
 652                         "Couldn't determine file existance, assuming non existance: "
 653                                 + e.getMessage());
 654                 return false;
 655             }
 656         }
 657         boolean retval = c.moveToFirst();
 658         c.close();
 659         return retval;
 660     }
 661
 662     private Cursor getCursorForValue(String key, String value) {
 663         Cursor c = null;
 664         if (getContentResolver() != null) {
 665             c = getContentResolver()
 666                     .query(ProviderTableMeta.CONTENT_URI,
 667                             null,
 668                             key + "=? AND "
 669                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
 670                                     + "=?",
 671                                     new String[] { value, mAccount.name }, null);
 672         } else {
 673             try {
 674                 c = getContentProviderClient().query(
 675                         ProviderTableMeta.CONTENT_URI,
 676                         null,
 677                         key + "=? AND " + ProviderTableMeta.FILE_ACCOUNT_OWNER
 678                         + "=?", new String[] { value, mAccount.name },
 679                         null);
 680             } catch (RemoteException e) {
 681                 Log_OC.e(TAG, "Could not get file details: " + e.getMessage());
 682                 c = null;
 683             }
 684         }
 685         return c;
 686     }
 687
 688     private OCFile createFileInstance(Cursor c) {
 689         OCFile file = null;
 690         if (c != null) {
 691             file = new OCFile(c.getString(c
 692                     .getColumnIndex(ProviderTableMeta.FILE_PATH)));
 693             file.setFileId(c.getLong(c.getColumnIndex(ProviderTableMeta._ID)));
 694             file.setParentId(c.getLong(c
 695                     .getColumnIndex(ProviderTableMeta.FILE_PARENT)));
 696             file.setMimetype(c.getString(c
 697                     .getColumnIndex(ProviderTableMeta.FILE_CONTENT_TYPE)));
 698             if (!file.isFolder()) {
 699                 file.setStoragePath(c.getString(c
 700                         .getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH)));
 701                 if (file.getStoragePath() == null) {
 702                     // try to find existing file and bind it with current account; - with the current update of SynchronizeFolderOperation, this won't be necessary anymore after a full synchronization of the account
 703                     File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
 704                     if (f.exists()) {
 705                         file.setStoragePath(f.getAbsolutePath());
 706                         file.setLastSyncDateForData(f.lastModified());
 707                     }
 708                 }
 709             }
 710             file.setFileLength(c.getLong(c
 711                     .getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH)));
 712             file.setCreationTimestamp(c.getLong(c
 713                     .getColumnIndex(ProviderTableMeta.FILE_CREATION)));
 714             file.setModificationTimestamp(c.getLong(c
 715                     .getColumnIndex(ProviderTableMeta.FILE_MODIFIED)));
 716             file.setModificationTimestampAtLastSyncForData(c.getLong(c
 717                     .getColumnIndex(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA)));
 718             file.setLastSyncDateForProperties(c.getLong(c
 719                     .getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE)));
 720             file.setLastSyncDateForData(c.getLong(c.
 721                     getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA)));
 722             file.setKeepInSync(c.getInt(
 723                     c.getColumnIndex(ProviderTableMeta.FILE_KEEP_IN_SYNC)) == 1 ? true : false);
 724             file.setEtag(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_ETAG)));
 725
 726         }
 727         return file;
 728     }
 729
 730     /*
 731      * Update the size value of an OCFile in DB
 732      *
 733     private int updateSize(long id, long size) {
 734         ContentValues cv = new ContentValues();
 735         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, size);
 736         int result = -1;
 737         if (getContentResolver() != null) {
 738              result = getContentResolver().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?",
 739                      new String[] { String.valueOf(id) });
 740         } else {
 741             try {
 742                 result = getContentProviderClient().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?",
 743                         new String[] { String.valueOf(id) });
 744             } catch (RemoteException e) {
 745                 Log_OC.e(TAG,"Fail to update size column into database " + e.getMessage());
 746             }
 747         }
 748         return result;
 749     }
 750     */
 751
 752     /*
 753      * Update the size of a subtree of folder from a file to the root
 754      * @param parentId: parent of the file
 755      *
 756     private void updateSizesToTheRoot(long parentId) {
 757
 758         OCFile file;
 759
 760         while (parentId != FileDataStorageManager.ROOT_PARENT_ID) {
 761
 762             // Update the size of the parent
 763             updateFolderSize(parentId);
 764
 765             // search the next parent
 766             file = getFileById(parentId);
 767             parentId = file.getParentId();
 768
 769         }
 770     }
 771     */
 772
 773 }