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