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             if (file.needsUpdatingWhileSaving()) {
 237                 for (OCFile f : getFolderContent(file))
 238                     saveFile(f);
 239             }
 240         }
 241
 242         return overriden;
 243     }
 244
 245
 246     /**
 247      * Inserts or updates the list of files contained in a given folder.
 248      *
 249      * @param folder
 250      * @param files
 251      * @param removeNotUpdated
 252      */
 253     public void saveFolder(OCFile folder, Collection<OCFile> updatedFiles, Collection<OCFile> filesToRemove) {
 254
 255         Log_OC.d(TAG,  "Saving folder " + folder.getRemotePath() + " with " + updatedFiles.size() + " children and " + filesToRemove.size() + " files to remove");
 256
 257         ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(updatedFiles.size());
 258         long folderSize = 0;
 259
 260         // prepare operations to insert or update files to save in the given folder
 261         for (OCFile file : updatedFiles) {
 262             ContentValues cv = new ContentValues();
 263             cv.put(ProviderTableMeta.FILE_MODIFIED, file.getModificationTimestamp());
 264             cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, file.getModificationTimestampAtLastSyncForData());
 265             cv.put(ProviderTableMeta.FILE_CREATION, file.getCreationTimestamp());
 266             cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, file.getFileLength());
 267             folderSize += file.getFileLength();
 268             cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, file.getMimetype());
 269             cv.put(ProviderTableMeta.FILE_NAME, file.getFileName());
 270             //cv.put(ProviderTableMeta.FILE_PARENT, file.getParentId());
 271             cv.put(ProviderTableMeta.FILE_PARENT, folder.getFileId());
 272             cv.put(ProviderTableMeta.FILE_PATH, file.getRemotePath());
 273             if (!file.isFolder()) {
 274                 cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getStoragePath());
 275             }
 276             cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
 277             cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, file.getLastSyncDateForProperties());
 278             cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, file.getLastSyncDateForData());
 279             cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, file.keepInSync() ? 1 : 0);
 280             cv.put(ProviderTableMeta.FILE_ETAG, file.getEtag());
 281
 282             boolean existsByPath = fileExists(file.getRemotePath());
 283             if (existsByPath || fileExists(file.getFileId())) {
 284                 // updating an existing file
 285
 286                 /* CALLER IS THE RESPONSIBLE FOR GRANTING RIGHT UPDATE OF INFORMATION, NOT THIS METHOD.
 287                  *
 288                  * HERE ONLY DATA CONSISTENCY SHOULD BE GRANTED
 289                  */
 290                 /*
 291                 OCFile oldFile = null;
 292                 if (existsByPath) {
 293                     // grant same id
 294                     oldFile = getFileByPath(file.getRemotePath());
 295                     file.setFileId(oldFile.getFileId());
 296                 } else {
 297                     oldFile = getFileById(file.getFileId());
 298                 }
 299
 300                 if (file.isFolder()) {
 301                     // folders keep size information, since it's calculated
 302                     file.setFileLength(oldFile.getFileLength());
 303                     cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, oldFile.getFileLength());
 304
 305                 } else if (file.getStoragePath() == null && oldFile.getStoragePath() != null) {
 306                     // regular files keep access to local contents, although it's lost in the new OCFile
 307                     file.setStoragePath(oldFile.getStoragePath());
 308                     cv.put(ProviderTableMeta.FILE_STORAGE_PATH, oldFile.getStoragePath());
 309                 }
 310                 */
 311
 312                 operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 313                         withValues(cv).
 314                         withSelection(  ProviderTableMeta._ID + "=?",
 315                                 new String[] { String.valueOf(file.getFileId()) })
 316                                 .build());
 317
 318             } else {
 319                 // adding a new file
 320                 operations.add(ContentProviderOperation.newInsert(ProviderTableMeta.CONTENT_URI).withValues(cv).build());
 321             }
 322         }
 323
 324         // prepare operations to remove files in the given folder
 325         String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 326         String [] whereArgs = null;
 327         for (OCFile file : filesToRemove) {
 328             if (file.getParentId() == folder.getFileId()) {
 329                 whereArgs = new String[]{mAccount.name, file.getRemotePath()};
 330                 //Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, "" + file.getFileId());
 331                 if (file.isFolder()) {
 332                     operations.add(ContentProviderOperation
 333                                     .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_DIR, file.getFileId())).withSelection(where, whereArgs)
 334                                         .build());
 335                     // TODO remove local folder
 336                 } else {
 337                     operations.add(ContentProviderOperation
 338                                     .newDelete(ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId())).withSelection(where, whereArgs)
 339                                         .build());
 340                     if (file.isDown()) {
 341                         new File(file.getStoragePath()).delete();
 342                         // TODO move the deletion of local contents after success of deletions
 343                     }
 344                 }
 345             }
 346         }
 347
 348         // update metadata of folder
 349         ContentValues cv = new ContentValues();
 350         cv.put(ProviderTableMeta.FILE_MODIFIED, folder.getModificationTimestamp());
 351         cv.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA, folder.getModificationTimestampAtLastSyncForData());
 352         cv.put(ProviderTableMeta.FILE_CREATION, folder.getCreationTimestamp());
 353         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, folderSize);
 354         cv.put(ProviderTableMeta.FILE_CONTENT_TYPE, folder.getMimetype());
 355         cv.put(ProviderTableMeta.FILE_NAME, folder.getFileName());
 356         cv.put(ProviderTableMeta.FILE_PARENT, folder.getParentId());
 357         cv.put(ProviderTableMeta.FILE_PATH, folder.getRemotePath());
 358         cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, mAccount.name);
 359         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE, folder.getLastSyncDateForProperties());
 360         cv.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA, folder.getLastSyncDateForData());
 361         cv.put(ProviderTableMeta.FILE_KEEP_IN_SYNC, folder.keepInSync() ? 1 : 0);
 362         cv.put(ProviderTableMeta.FILE_ETAG, folder.getEtag());
 363         operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 364                 withValues(cv).
 365                 withSelection(  ProviderTableMeta._ID + "=?",
 366                         new String[] { String.valueOf(folder.getFileId()) })
 367                         .build());
 368
 369         // apply operations in batch
 370         ContentProviderResult[] results = null;
 371         Log_OC.d(TAG, "Sending " + operations.size() + " operations to FileContentProvider");
 372         try {
 373             if (getContentResolver() != null) {
 374                 results = getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
 375
 376             } else {
 377                 results = getContentProviderClient().applyBatch(operations);
 378             }
 379
 380         } catch (OperationApplicationException e) {
 381             Log_OC.e(TAG, "Exception in batch of operations " + e.getMessage());
 382
 383         } catch (RemoteException e) {
 384             Log_OC.e(TAG, "Exception in batch of operations  " + e.getMessage());
 385         }
 386
 387         // update new id in file objects for insertions
 388         if (results != null) {
 389             long newId;
 390             Iterator<OCFile> filesIt = updatedFiles.iterator();
 391             OCFile file = null;
 392             for (int i=0; i<results.length; i++) {
 393                 if (filesIt.hasNext()) {
 394                     file = filesIt.next();
 395                 } else {
 396                     file = null;
 397                 }
 398                 if (results[i].uri != null) {
 399                     newId = Long.parseLong(results[i].uri.getPathSegments().get(1));
 400                     //updatedFiles.get(i).setFileId(newId);
 401                     if (file != null) {
 402                         file.setFileId(newId);
 403                     }
 404                 }
 405             }
 406         }
 407
 408     }
 409
 410
 411     /**
 412      *
 413      * @param id
 414      */
 415     public void updateFolderSize(long 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     }
 431
 432
 433     public void removeFile(OCFile file, boolean removeDBData, boolean removeLocalCopy) {
 434         if (file != null) {
 435             if (file.isFolder()) {
 436                 removeFolder(file, removeDBData, removeLocalCopy);
 437
 438             } else {
 439                 if (removeDBData) {
 440                     //Uri file_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, ""+file.getFileId());
 441                     Uri file_uri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, file.getFileId());
 442                     String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 443                     String [] whereArgs = new String[]{mAccount.name, file.getRemotePath()};
 444                     if (getContentProviderClient() != null) {
 445                         try {
 446                             getContentProviderClient().delete(file_uri, where, whereArgs);
 447                         } catch (RemoteException e) {
 448                             e.printStackTrace();
 449                         }
 450                     } else {
 451                         getContentResolver().delete(file_uri, where, whereArgs);
 452                     }
 453                 }
 454                 if (removeLocalCopy && file.isDown()) {
 455                     boolean success = new File(file.getStoragePath()).delete();
 456                     if (!removeDBData && success) {
 457                         // maybe unnecessary, but should be checked TODO remove if unnecessary
 458                         file.setStoragePath(null);
 459                         saveFile(file);
 460                     }
 461                 }
 462             }
 463         }
 464     }
 465
 466
 467     public void removeFolder(OCFile folder, boolean removeDBData, boolean removeLocalContent) {
 468         if (folder != null && folder.isFolder()) {
 469             if (removeDBData &&  folder.getFileId() != -1) {
 470                 removeFolderInDb(folder);
 471             }
 472             if (removeLocalContent) {
 473                 File localFolder = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, folder));
 474                 removeLocalFolder(localFolder);
 475             }
 476         }
 477     }
 478
 479     private void removeFolderInDb(OCFile folder) {
 480         Uri folder_uri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_DIR, ""+ folder.getFileId());   // URI for recursive deletion
 481         String where = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?" + " AND " + ProviderTableMeta.FILE_PATH + "=?";
 482         String [] whereArgs = new String[]{mAccount.name, folder.getRemotePath()};
 483         if (getContentProviderClient() != null) {
 484             try {
 485                 getContentProviderClient().delete(folder_uri, where, whereArgs);
 486             } catch (RemoteException e) {
 487                 e.printStackTrace();
 488             }
 489         } else {
 490             getContentResolver().delete(folder_uri, where, whereArgs);
 491         }
 492     }
 493
 494     private void removeLocalFolder(File folder) {
 495         if (folder.exists()) {
 496             File[] files = folder.listFiles();
 497             if (files != null) {
 498                 for (File file : files) {
 499                     if (file.isDirectory()) {
 500                         removeLocalFolder(file);
 501                     } else {
 502                         file.delete();
 503                     }
 504                 }
 505             }
 506             folder.delete();
 507         }
 508     }
 509
 510     /**
 511      * Updates database for a folder that was moved to a different location.
 512      *
 513      * TODO explore better (faster) implementations
 514      * TODO throw exceptions up !
 515      */
 516     public void moveFolder(OCFile folder, String newPath) {
 517         // TODO check newPath
 518
 519         if (folder != null && folder.isFolder() && folder.fileExists() && !OCFile.ROOT_PATH.equals(folder.getFileName())) {
 520             /// 1. get all the descendants of 'dir' in a single QUERY (including 'dir')
 521             Cursor c = null;
 522             if (getContentProviderClient() != null) {
 523                 try {
 524                     c = getContentProviderClient().query(ProviderTableMeta.CONTENT_URI,
 525                             null,
 526                             ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
 527                             new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
 528                 } catch (RemoteException e) {
 529                     Log_OC.e(TAG, e.getMessage());
 530                 }
 531             } else {
 532                 c = getContentResolver().query(ProviderTableMeta.CONTENT_URI,
 533                         null,
 534                         ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " + ProviderTableMeta.FILE_PATH + " LIKE ? ",
 535                         new String[] { mAccount.name, folder.getRemotePath() + "%"  }, ProviderTableMeta.FILE_PATH + " ASC ");
 536             }
 537
 538             /// 2. prepare a batch of update operations to change all the descendants
 539             ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>(c.getCount());
 540             int lengthOfOldPath = folder.getRemotePath().length();
 541             String defaultSavePath = FileStorageUtils.getSavePath(mAccount.name);
 542             int lengthOfOldStoragePath = defaultSavePath.length() + lengthOfOldPath;
 543             if (c.moveToFirst()) {
 544                 do {
 545                     ContentValues cv = new ContentValues(); // don't take the constructor out of the loop and clear the object
 546                     OCFile child = createFileInstance(c);
 547                     cv.put(ProviderTableMeta.FILE_PATH, newPath + child.getRemotePath().substring(lengthOfOldPath));
 548                     if (child.getStoragePath() != null && child.getStoragePath().startsWith(defaultSavePath)) {
 549                         cv.put(ProviderTableMeta.FILE_STORAGE_PATH, defaultSavePath + newPath + child.getStoragePath().substring(lengthOfOldStoragePath));
 550                     }
 551                     operations.add(ContentProviderOperation.newUpdate(ProviderTableMeta.CONTENT_URI).
 552                             withValues(cv).
 553                             withSelection(  ProviderTableMeta._ID + "=?",
 554                                     new String[] { String.valueOf(child.getFileId()) })
 555                                     .build());
 556                 } while (c.moveToNext());
 557             }
 558             c.close();
 559
 560             /// 3. apply updates in batch
 561             try {
 562                 if (getContentResolver() != null) {
 563                     getContentResolver().applyBatch(ProviderMeta.AUTHORITY_FILES, operations);
 564
 565                 } else {
 566                     getContentProviderClient().applyBatch(operations);
 567                 }
 568
 569             } catch (OperationApplicationException e) {
 570                 Log_OC.e(TAG, "Fail to update descendants of " + folder.getFileId() + " in database", e);
 571
 572             } catch (RemoteException e) {
 573                 Log_OC.e(TAG, "Fail to update desendants of " + folder.getFileId() + " in database", e);
 574             }
 575
 576         }
 577     }
 578
 579
 580     private Vector<OCFile> getFolderContent(long parentId) {
 581
 582         Vector<OCFile> ret = new Vector<OCFile>();
 583
 584         Uri req_uri = Uri.withAppendedPath(
 585                 ProviderTableMeta.CONTENT_URI_DIR,
 586                 String.valueOf(parentId));
 587         Cursor c = null;
 588
 589         if (getContentProviderClient() != null) {
 590             try {
 591                 c = getContentProviderClient().query(req_uri, null,
 592                         ProviderTableMeta.FILE_PARENT + "=?" ,
 593                         new String[] { String.valueOf(parentId)}, null);
 594             } catch (RemoteException e) {
 595                 Log_OC.e(TAG, e.getMessage());
 596                 return ret;
 597             }
 598         } else {
 599             c = getContentResolver().query(req_uri, null,
 600                     ProviderTableMeta.FILE_PARENT + "=?" ,
 601                     new String[] { String.valueOf(parentId)}, null);
 602         }
 603
 604         if (c.moveToFirst()) {
 605             do {
 606                 OCFile child = createFileInstance(c);
 607                 ret.add(child);
 608             } while (c.moveToNext());
 609         }
 610
 611         c.close();
 612
 613         Collections.sort(ret);
 614
 615         return ret;
 616     }
 617
 618
 619     private OCFile createRootDir() {
 620         OCFile file = new OCFile(OCFile.ROOT_PATH);
 621         file.setMimetype("DIR");
 622         file.setParentId(FileDataStorageManager.ROOT_PARENT_ID);
 623         saveFile(file);
 624         return file;
 625     }
 626
 627     private boolean fileExists(String cmp_key, String value) {
 628         Cursor c;
 629         if (getContentResolver() != null) {
 630             c = getContentResolver()
 631                     .query(ProviderTableMeta.CONTENT_URI,
 632                             null,
 633                             cmp_key + "=? AND "
 634                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
 635                                     + "=?",
 636                                     new String[] { value, mAccount.name }, null);
 637         } else {
 638             try {
 639                 c = getContentProviderClient().query(
 640                         ProviderTableMeta.CONTENT_URI,
 641                         null,
 642                         cmp_key + "=? AND "
 643                                 + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
 644                                 new String[] { value, mAccount.name }, null);
 645             } catch (RemoteException e) {
 646                 Log_OC.e(TAG,
 647                         "Couldn't determine file existance, assuming non existance: "
 648                                 + e.getMessage());
 649                 return false;
 650             }
 651         }
 652         boolean retval = c.moveToFirst();
 653         c.close();
 654         return retval;
 655     }
 656
 657     private Cursor getCursorForValue(String key, String value) {
 658         Cursor c = null;
 659         if (getContentResolver() != null) {
 660             c = getContentResolver()
 661                     .query(ProviderTableMeta.CONTENT_URI,
 662                             null,
 663                             key + "=? AND "
 664                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER
 665                                     + "=?",
 666                                     new String[] { value, mAccount.name }, null);
 667         } else {
 668             try {
 669                 c = getContentProviderClient().query(
 670                         ProviderTableMeta.CONTENT_URI,
 671                         null,
 672                         key + "=? AND " + ProviderTableMeta.FILE_ACCOUNT_OWNER
 673                         + "=?", new String[] { value, mAccount.name },
 674                         null);
 675             } catch (RemoteException e) {
 676                 Log_OC.e(TAG, "Could not get file details: " + e.getMessage());
 677                 c = null;
 678             }
 679         }
 680         return c;
 681     }
 682
 683     private OCFile createFileInstance(Cursor c) {
 684         OCFile file = null;
 685         if (c != null) {
 686             file = new OCFile(c.getString(c
 687                     .getColumnIndex(ProviderTableMeta.FILE_PATH)));
 688             file.setFileId(c.getLong(c.getColumnIndex(ProviderTableMeta._ID)));
 689             file.setParentId(c.getLong(c
 690                     .getColumnIndex(ProviderTableMeta.FILE_PARENT)));
 691             file.setMimetype(c.getString(c
 692                     .getColumnIndex(ProviderTableMeta.FILE_CONTENT_TYPE)));
 693             if (!file.isFolder()) {
 694                 file.setStoragePath(c.getString(c
 695                         .getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH)));
 696                 if (file.getStoragePath() == null) {
 697                     // 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
 698                     File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
 699                     if (f.exists()) {
 700                         file.setStoragePath(f.getAbsolutePath());
 701                         file.setLastSyncDateForData(f.lastModified());
 702                     }
 703                 }
 704             }
 705             file.setFileLength(c.getLong(c
 706                     .getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH)));
 707             file.setCreationTimestamp(c.getLong(c
 708                     .getColumnIndex(ProviderTableMeta.FILE_CREATION)));
 709             file.setModificationTimestamp(c.getLong(c
 710                     .getColumnIndex(ProviderTableMeta.FILE_MODIFIED)));
 711             file.setModificationTimestampAtLastSyncForData(c.getLong(c
 712                     .getColumnIndex(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA)));
 713             file.setLastSyncDateForProperties(c.getLong(c
 714                     .getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE)));
 715             file.setLastSyncDateForData(c.getLong(c.
 716                     getColumnIndex(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA)));
 717             file.setKeepInSync(c.getInt(
 718                     c.getColumnIndex(ProviderTableMeta.FILE_KEEP_IN_SYNC)) == 1 ? true : false);
 719             file.setEtag(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_ETAG)));
 720
 721         }
 722         return file;
 723     }
 724
 725     /*
 726      * Update the size value of an OCFile in DB
 727      *
 728     private int updateSize(long id, long size) {
 729         ContentValues cv = new ContentValues();
 730         cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, size);
 731         int result = -1;
 732         if (getContentResolver() != null) {
 733              result = getContentResolver().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?",
 734                      new String[] { String.valueOf(id) });
 735         } else {
 736             try {
 737                 result = getContentProviderClient().update(ProviderTableMeta.CONTENT_URI, cv, ProviderTableMeta._ID + "=?",
 738                         new String[] { String.valueOf(id) });
 739             } catch (RemoteException e) {
 740                 Log_OC.e(TAG,"Fail to update size column into database " + e.getMessage());
 741             }
 742         }
 743         return result;
 744     }
 745     */
 746
 747     /*
 748      * Update the size of a subtree of folder from a file to the root
 749      * @param parentId: parent of the file
 750      *
 751     private void updateSizesToTheRoot(long parentId) {
 752
 753         OCFile file;
 754
 755         while (parentId != FileDataStorageManager.ROOT_PARENT_ID) {
 756
 757             // Update the size of the parent
 758             updateFolderSize(parentId);
 759
 760             // search the next parent
 761             file = getFileById(parentId);
 762             parentId = file.getParentId();
 763
 764         }
 765     }
 766     */
 767
 768 }