src/com/owncloud/android/providers/FileContentProvider.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author Bartek Przybylski
   5  *   @author David A. Velasco
   6  *   Copyright (C) 2011  Bartek Przybylski
   7  *   Copyright (C) 2015 ownCloud Inc.
   8  *
   9  *   This program is free software: you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License version 2,
  11  *   as published by the Free Software Foundation.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  */
  22
  23 package com.owncloud.android.providers;
  24
  25 import java.io.File;
  26 import java.security.Provider;
  27 import java.util.ArrayList;
  28 import java.util.HashMap;
  29
  30 import com.owncloud.android.MainApp;
  31 import com.owncloud.android.R;
  32 import com.owncloud.android.datamodel.OCFile;
  33 import com.owncloud.android.db.ProviderMeta;
  34 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  35 import com.owncloud.android.lib.common.accounts.AccountUtils;
  36 import com.owncloud.android.lib.common.utils.Log_OC;
  37 import com.owncloud.android.lib.resources.shares.ShareType;
  38 import com.owncloud.android.utils.FileStorageUtils;
  39
  40 import android.accounts.Account;
  41 import android.accounts.AccountManager;
  42 import android.content.ContentProvider;
  43 import android.content.ContentProviderOperation;
  44 import android.content.ContentProviderResult;
  45 import android.content.ContentUris;
  46 import android.content.ContentValues;
  47 import android.content.Context;
  48 import android.content.OperationApplicationException;
  49 import android.content.UriMatcher;
  50 import android.database.Cursor;
  51 import android.database.SQLException;
  52 import android.database.sqlite.SQLiteDatabase;
  53 import android.database.sqlite.SQLiteOpenHelper;
  54 import android.database.sqlite.SQLiteQueryBuilder;
  55 import android.net.Uri;
  56 import android.text.TextUtils;
  57
  58 /**
  59  * The ContentProvider for the ownCloud App.
  60  */
  61 public class FileContentProvider extends ContentProvider {
  62
  63     private DataBaseHelper mDbHelper;
  64
  65     // Projection for filelist table
  66     private static HashMap<String, String> mFileProjectionMap;
  67     static {
  68         mFileProjectionMap = new HashMap<String, String>();
  69         mFileProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
  70         mFileProjectionMap.put(ProviderTableMeta.FILE_PARENT,
  71                 ProviderTableMeta.FILE_PARENT);
  72         mFileProjectionMap.put(ProviderTableMeta.FILE_PATH,
  73                 ProviderTableMeta.FILE_PATH);
  74         mFileProjectionMap.put(ProviderTableMeta.FILE_NAME,
  75                 ProviderTableMeta.FILE_NAME);
  76         mFileProjectionMap.put(ProviderTableMeta.FILE_CREATION,
  77                 ProviderTableMeta.FILE_CREATION);
  78         mFileProjectionMap.put(ProviderTableMeta.FILE_MODIFIED,
  79                 ProviderTableMeta.FILE_MODIFIED);
  80         mFileProjectionMap.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA,
  81                 ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA);
  82         mFileProjectionMap.put(ProviderTableMeta.FILE_CONTENT_LENGTH,
  83                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  84         mFileProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  85                 ProviderTableMeta.FILE_CONTENT_TYPE);
  86         mFileProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  87                 ProviderTableMeta.FILE_STORAGE_PATH);
  88         mFileProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  89                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  90         mFileProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA,
  91                 ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA);
  92         mFileProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  93                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  94         mFileProjectionMap.put(ProviderTableMeta.FILE_ACCOUNT_OWNER,
  95                 ProviderTableMeta.FILE_ACCOUNT_OWNER);
  96         mFileProjectionMap.put(ProviderTableMeta.FILE_ETAG,
  97                 ProviderTableMeta.FILE_ETAG);
  98         mFileProjectionMap.put(ProviderTableMeta.FILE_SHARE_BY_LINK,
  99                 ProviderTableMeta.FILE_SHARE_BY_LINK);
 100         mFileProjectionMap.put(ProviderTableMeta.FILE_PUBLIC_LINK,
 101                 ProviderTableMeta.FILE_PUBLIC_LINK);
 102         mFileProjectionMap.put(ProviderTableMeta.FILE_PERMISSIONS,
 103                 ProviderTableMeta.FILE_PERMISSIONS);
 104         mFileProjectionMap.put(ProviderTableMeta.FILE_REMOTE_ID,
 105                 ProviderTableMeta.FILE_REMOTE_ID);
 106         mFileProjectionMap.put(ProviderTableMeta.FILE_UPDATE_THUMBNAIL,
 107                 ProviderTableMeta.FILE_UPDATE_THUMBNAIL);
 108         mFileProjectionMap.put(ProviderTableMeta.FILE_IS_DOWNLOADING,
 109                 ProviderTableMeta.FILE_IS_DOWNLOADING);
 110     }
 111
 112     private static final int SINGLE_FILE = 1;
 113     private static final int DIRECTORY = 2;
 114     private static final int ROOT_DIRECTORY = 3;
 115     private static final int SHARES = 4;
 116
 117     private static final String TAG = FileContentProvider.class.getSimpleName();
 118
 119     // Projection for ocshares table
 120     private static HashMap<String, String> mOCSharesProjectionMap;
 121     static {
 122         mOCSharesProjectionMap = new HashMap<String, String>();
 123         mOCSharesProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
 124         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_FILE_SOURCE,
 125                 ProviderTableMeta.OCSHARES_FILE_SOURCE);
 126         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ITEM_SOURCE,
 127                 ProviderTableMeta.OCSHARES_ITEM_SOURCE);
 128         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_TYPE,
 129                 ProviderTableMeta.OCSHARES_SHARE_TYPE);
 130         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_WITH,
 131                 ProviderTableMeta.OCSHARES_SHARE_WITH);
 132         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_PATH,
 133                 ProviderTableMeta.OCSHARES_PATH);
 134         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_PERMISSIONS,
 135                 ProviderTableMeta.OCSHARES_PERMISSIONS);
 136         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARED_DATE,
 137                 ProviderTableMeta.OCSHARES_SHARED_DATE);
 138         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_EXPIRATION_DATE,
 139                 ProviderTableMeta.OCSHARES_EXPIRATION_DATE);
 140         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_TOKEN,
 141                 ProviderTableMeta.OCSHARES_TOKEN);
 142         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME,
 143                 ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME);
 144         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_IS_DIRECTORY,
 145                 ProviderTableMeta.OCSHARES_IS_DIRECTORY);
 146         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_USER_ID,
 147                 ProviderTableMeta.OCSHARES_USER_ID);
 148         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED,
 149                 ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED);
 150         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER,
 151                 ProviderTableMeta.OCSHARES_ACCOUNT_OWNER);
 152     }
 153
 154     private UriMatcher mUriMatcher;
 155
 156     @Override
 157     public int delete(Uri uri, String where, String[] whereArgs) {
 158         //Log_OC.d(TAG, "Deleting " + uri + " at provider " + this);
 159         int count = 0;
 160         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 161         db.beginTransaction();
 162         try {
 163             count = delete(db, uri, where, whereArgs);
 164             db.setTransactionSuccessful();
 165         } finally {
 166             db.endTransaction();
 167         }
 168         getContext().getContentResolver().notifyChange(uri, null);
 169         return count;
 170     }
 171
 172     private int delete(SQLiteDatabase db, Uri uri, String where, String[] whereArgs) {
 173         int count = 0;
 174         switch (mUriMatcher.match(uri)) {
 175         case SINGLE_FILE:
 176             Cursor c = query(db, uri, null, where, whereArgs, null);
 177             String remoteId = "";
 178             if (c != null && c.moveToFirst()) {
 179                 remoteId = c.getString(c.getColumnIndex(ProviderTableMeta.FILE_REMOTE_ID));
 180                 //ThumbnailsCacheManager.removeFileFromCache(remoteId);
 181             }
 182             Log_OC.d(TAG, "Removing FILE " + remoteId);
 183
 184             count = db.delete(ProviderTableMeta.FILE_TABLE_NAME,
 185                     ProviderTableMeta._ID
 186                             + "="
 187                             + uri.getPathSegments().get(1)
 188                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 189                                     + ")" : ""), whereArgs);
 190             /* just for log
 191             if (c!=null) {
 192                 c.close();
 193             }
 194             */
 195             break;
 196         case DIRECTORY:
 197             // deletion of folder is recursive
 198             /*
 199             Uri folderUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, Long.parseLong(uri.getPathSegments().get(1)));
 200             Cursor folder = query(db, folderUri, null, null, null, null);
 201             String folderName = "(unknown)";
 202             if (folder != null && folder.moveToFirst()) {
 203                 folderName = folder.getString(folder.getColumnIndex(ProviderTableMeta.FILE_PATH));
 204             }
 205             */
 206             Cursor children = query(uri, null, null, null, null);
 207             if (children != null && children.moveToFirst())  {
 208                 long childId;
 209                 boolean isDir;
 210                 while (!children.isAfterLast()) {
 211                     childId = children.getLong(children.getColumnIndex(ProviderTableMeta._ID));
 212                     isDir = "DIR".equals(children.getString(
 213                             children.getColumnIndex(ProviderTableMeta.FILE_CONTENT_TYPE)
 214                     ));
 215                     //remotePath = children.getString(children.getColumnIndex(ProviderTableMeta.FILE_PATH));
 216                     if (isDir) {
 217                         count += delete(
 218                             db,
 219                             ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_DIR, childId),
 220                             null,
 221                             null
 222                         );
 223                     } else {
 224                         count += delete(
 225                             db,
 226                             ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, childId),
 227                             null,
 228                             null
 229                         );
 230                     }
 231                     children.moveToNext();
 232                 }
 233                 children.close();
 234             } /*else {
 235                 Log_OC.d(TAG, "No child to remove in DIRECTORY " + folderName);
 236             }
 237             Log_OC.d(TAG, "Removing DIRECTORY " + folderName + " (or maybe not) ");
 238             */
 239             count += db.delete(ProviderTableMeta.FILE_TABLE_NAME,
 240                     ProviderTableMeta._ID
 241                     + "="
 242                     + uri.getPathSegments().get(1)
 243                     + (!TextUtils.isEmpty(where) ? " AND (" + where
 244                             + ")" : ""), whereArgs);
 245             /* Just for log
 246              if (folder != null) {
 247                 folder.close();
 248             }*/
 249             break;
 250         case ROOT_DIRECTORY:
 251             //Log_OC.d(TAG, "Removing ROOT!");
 252             count = db.delete(ProviderTableMeta.FILE_TABLE_NAME, where, whereArgs);
 253             break;
 254         case SHARES:
 255             count = db.delete(ProviderTableMeta.OCSHARES_TABLE_NAME, where, whereArgs);
 256             break;
 257         default:
 258             //Log_OC.e(TAG, "Unknown uri " + uri);
 259             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 260         }
 261         return count;
 262     }
 263
 264     @Override
 265     public String getType(Uri uri) {
 266         switch (mUriMatcher.match(uri)) {
 267         case ROOT_DIRECTORY:
 268             return ProviderTableMeta.CONTENT_TYPE;
 269         case SINGLE_FILE:
 270             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 271         default:
 272             throw new IllegalArgumentException("Unknown Uri id."
 273                     + uri.toString());
 274         }
 275     }
 276
 277     @Override
 278     public Uri insert(Uri uri, ContentValues values) {
 279         Uri newUri = null;
 280         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 281         db.beginTransaction();
 282         try {
 283             newUri = insert(db, uri, values);
 284             db.setTransactionSuccessful();
 285         } finally {
 286             db.endTransaction();
 287         }
 288         getContext().getContentResolver().notifyChange(newUri, null);
 289         return newUri;
 290     }
 291
 292     private Uri insert(SQLiteDatabase db, Uri uri, ContentValues values) {
 293         switch (mUriMatcher.match(uri)){
 294         case ROOT_DIRECTORY:
 295         case SINGLE_FILE:
 296             String remotePath = values.getAsString(ProviderTableMeta.FILE_PATH);
 297             String accountName = values.getAsString(ProviderTableMeta.FILE_ACCOUNT_OWNER);
 298             String[] projection = new String[] {
 299                     ProviderTableMeta._ID, ProviderTableMeta.FILE_PATH,
 300                     ProviderTableMeta.FILE_ACCOUNT_OWNER
 301             };
 302             String where = ProviderTableMeta.FILE_PATH + "=? AND " +
 303                     ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?";
 304             String[] whereArgs = new String[] {remotePath, accountName};
 305             Cursor doubleCheck = query(db, uri, projection, where, whereArgs, null);
 306             // ugly patch; serious refactorization is needed to reduce work in
 307             // FileDataStorageManager and bring it to FileContentProvider
 308             if (doubleCheck == null || !doubleCheck.moveToFirst()) {
 309                 long rowId = db.insert(ProviderTableMeta.FILE_TABLE_NAME, null, values);
 310                 if (rowId > 0) {
 311                     Uri insertedFileUri =
 312                             ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, rowId);
 313                     return insertedFileUri;
 314                 } else {
 315                     throw new SQLException("ERROR " + uri);
 316                 }
 317             } else {
 318                 // file is already inserted; race condition, let's avoid a duplicated entry
 319                 Uri insertedFileUri = ContentUris.withAppendedId(
 320                         ProviderTableMeta.CONTENT_URI_FILE,
 321                         doubleCheck.getLong(doubleCheck.getColumnIndex(ProviderTableMeta._ID))
 322                 );
 323                 doubleCheck.close();
 324
 325                 return insertedFileUri;
 326             }
 327
 328         case SHARES:
 329             String path = values.getAsString(ProviderTableMeta.OCSHARES_PATH);
 330             String accountNameShare= values.getAsString(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER);
 331             String[] projectionShare = new String[] {
 332                     ProviderTableMeta._ID, ProviderTableMeta.OCSHARES_PATH,
 333                     ProviderTableMeta.OCSHARES_ACCOUNT_OWNER
 334             };
 335             String whereShare = ProviderTableMeta.OCSHARES_PATH + "=? AND " +
 336                     ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + "=?";
 337             String[] whereArgsShare = new String[] {path, accountNameShare};
 338             Uri insertedShareUri = null;
 339             Cursor doubleCheckShare =
 340                     query(db, uri, projectionShare, whereShare, whereArgsShare, null);
 341             // ugly patch; serious refactorization is needed to reduce work in
 342             // FileDataStorageManager and bring it to FileContentProvider
 343             if (doubleCheckShare == null || !doubleCheckShare.moveToFirst()) {
 344                 long rowId = db.insert(ProviderTableMeta.OCSHARES_TABLE_NAME, null, values);
 345                 if (rowId >0) {
 346                     insertedShareUri =
 347                             ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_SHARE, rowId);
 348                 } else {
 349                     throw new SQLException("ERROR " + uri);
 350
 351                 }
 352             } else {
 353                 // file is already inserted; race condition, let's avoid a duplicated entry
 354                 insertedShareUri = ContentUris.withAppendedId(
 355                         ProviderTableMeta.CONTENT_URI_SHARE,
 356                         doubleCheckShare.getLong(
 357                                 doubleCheckShare.getColumnIndex(ProviderTableMeta._ID)
 358                         )
 359                 );
 360                 doubleCheckShare.close();
 361             }
 362             updateFilesTableAccordingToShareInsertion(db, uri, values);
 363             return insertedShareUri;
 364
 365
 366         default:
 367             throw new IllegalArgumentException("Unknown uri id: " + uri);
 368         }
 369
 370     }
 371
 372     private void updateFilesTableAccordingToShareInsertion(
 373             SQLiteDatabase db, Uri uri, ContentValues shareValues
 374             ) {
 375         ContentValues fileValues = new ContentValues();
 376         fileValues.put(
 377                 ProviderTableMeta.FILE_SHARE_BY_LINK,
 378                 ShareType.PUBLIC_LINK.getValue() ==
 379                         shareValues.getAsInteger(ProviderTableMeta.OCSHARES_SHARE_TYPE) ? 1 : 0
 380         );
 381         String whereShare = ProviderTableMeta.FILE_PATH + "=? AND " +
 382                 ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?";
 383         String[] whereArgsShare = new String[] {
 384                 shareValues.getAsString(ProviderTableMeta.OCSHARES_PATH),
 385                 shareValues.getAsString(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER)
 386         };
 387         db.update(ProviderTableMeta.FILE_TABLE_NAME, fileValues, whereShare, whereArgsShare);
 388     }
 389
 390
 391     @Override
 392     public boolean onCreate() {
 393         mDbHelper = new DataBaseHelper(getContext());
 394
 395         String authority = getContext().getResources().getString(R.string.authority);
 396         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
 397         mUriMatcher.addURI(authority, null, ROOT_DIRECTORY);
 398         mUriMatcher.addURI(authority, "file/", SINGLE_FILE);
 399         mUriMatcher.addURI(authority, "file/#", SINGLE_FILE);
 400         mUriMatcher.addURI(authority, "dir/", DIRECTORY);
 401         mUriMatcher.addURI(authority, "dir/#", DIRECTORY);
 402         mUriMatcher.addURI(authority, "shares/", SHARES);
 403         mUriMatcher.addURI(authority, "shares/#", SHARES);
 404
 405         return true;
 406     }
 407
 408
 409     @Override
 410     public Cursor query(
 411             Uri uri,
 412             String[] projection,
 413             String selection,
 414             String[] selectionArgs,
 415             String sortOrder
 416         ) {
 417
 418         Cursor result = null;
 419         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 420         db.beginTransaction();
 421         try {
 422             result = query(db, uri, projection, selection, selectionArgs, sortOrder);
 423             db.setTransactionSuccessful();
 424         } finally {
 425             db.endTransaction();
 426         }
 427         return result;
 428     }
 429
 430     private Cursor query(
 431             SQLiteDatabase db,
 432             Uri uri,
 433             String[] projection,
 434             String selection,
 435             String[] selectionArgs,
 436             String sortOrder
 437         ) {
 438
 439         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 440
 441         sqlQuery.setTables(ProviderTableMeta.FILE_TABLE_NAME);
 442         sqlQuery.setProjectionMap(mFileProjectionMap);
 443
 444         switch (mUriMatcher.match(uri)) {
 445         case ROOT_DIRECTORY:
 446             break;
 447         case DIRECTORY:
 448             String folderId = uri.getPathSegments().get(1);
 449             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 450                     + folderId);
 451             break;
 452         case SINGLE_FILE:
 453             if (uri.getPathSegments().size() > 1) {
 454                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 455                         + uri.getPathSegments().get(1));
 456             }
 457             break;
 458         case SHARES:
 459             sqlQuery.setTables(ProviderTableMeta.OCSHARES_TABLE_NAME);
 460             sqlQuery.setProjectionMap(mOCSharesProjectionMap);
 461             if (uri.getPathSegments().size() > 1) {
 462                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 463                         + uri.getPathSegments().get(1));
 464             }
 465             break;
 466         default:
 467             throw new IllegalArgumentException("Unknown uri id: " + uri);
 468         }
 469
 470         String order;
 471         if (TextUtils.isEmpty(sortOrder)) {
 472             if (mUriMatcher.match(uri) == SHARES) {
 473                 order = ProviderTableMeta.OCSHARES_DEFAULT_SORT_ORDER;
 474             } else {
 475
 476                 order = ProviderTableMeta.FILE_DEFAULT_SORT_ORDER;
 477             }
 478         } else {
 479             order = sortOrder;
 480         }
 481
 482         // DB case_sensitive
 483         db.execSQL("PRAGMA case_sensitive_like = true");
 484         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs, null, null, order);
 485         c.setNotificationUri(getContext().getContentResolver(), uri);
 486         return c;
 487     }
 488
 489     @Override
 490     public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
 491
 492         int count = 0;
 493         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 494         db.beginTransaction();
 495         try {
 496             count = update(db, uri, values, selection, selectionArgs);
 497             db.setTransactionSuccessful();
 498         } finally {
 499             db.endTransaction();
 500         }
 501         getContext().getContentResolver().notifyChange(uri, null);
 502         return count;
 503     }
 504
 505
 506
 507     private int update(
 508             SQLiteDatabase db,
 509             Uri uri,
 510             ContentValues values,
 511             String selection,
 512             String[] selectionArgs
 513         ) {
 514         switch (mUriMatcher.match(uri)) {
 515             case DIRECTORY:
 516                 return  0; //updateFolderSize(db, selectionArgs[0]);
 517             case SHARES:
 518                 return db.update(
 519                         ProviderTableMeta.OCSHARES_TABLE_NAME, values, selection, selectionArgs
 520                 );
 521             default:
 522                 return db.update(
 523                         ProviderTableMeta.FILE_TABLE_NAME, values, selection, selectionArgs
 524                 );
 525         }
 526     }
 527
 528  /*
 529     private int updateFolderSize(SQLiteDatabase db, String folderId) {
 530         int count = 0;
 531         String [] whereArgs = new String[] { folderId };
 532
 533         // read current size saved for the folder
 534         long folderSize = 0;
 535         long folderParentId = -1;
 536         Uri selectFolderUri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, folderId);
 537         String[] folderProjection = new String[] { ProviderTableMeta.FILE_CONTENT_LENGTH,  ProviderTableMeta.FILE_PARENT};
 538         String folderWhere = ProviderTableMeta._ID + "=?";
 539         Cursor folderCursor = query(db, selectFolderUri, folderProjection, folderWhere, whereArgs, null);
 540         if (folderCursor != null && folderCursor.moveToFirst()) {
 541             folderSize = folderCursor.getLong(folderCursor.getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH));;
 542             folderParentId = folderCursor.getLong(folderCursor.getColumnIndex(ProviderTableMeta.FILE_PARENT));;
 543         }
 544         folderCursor.close();
 545
 546         // read and sum sizes of children
 547         long childrenSize = 0;
 548         Uri selectChildrenUri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_DIR, folderId);
 549         String[] childrenProjection = new String[] { ProviderTableMeta.FILE_CONTENT_LENGTH,  ProviderTableMeta.FILE_PARENT};
 550         String childrenWhere = ProviderTableMeta.FILE_PARENT + "=?";
 551         Cursor childrenCursor = query(db, selectChildrenUri, childrenProjection, childrenWhere, whereArgs, null);
 552         if (childrenCursor != null && childrenCursor.moveToFirst()) {
 553             while (!childrenCursor.isAfterLast()) {
 554                 childrenSize += childrenCursor.getLong(childrenCursor.getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH));
 555                 childrenCursor.moveToNext();
 556             }
 557         }
 558         childrenCursor.close();
 559
 560         // update if needed
 561         if (folderSize != childrenSize) {
 562             Log_OC.d("FileContentProvider", "Updating " + folderSize + " to " + childrenSize);
 563             ContentValues cv = new ContentValues();
 564             cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, childrenSize);
 565             count = db.update(ProviderTableMeta.FILE_TABLE_NAME, cv, folderWhere, whereArgs);
 566
 567             // propagate update until root
 568             if (folderParentId > FileDataStorageManager.ROOT_PARENT_ID) {
 569                 Log_OC.d("FileContentProvider", "Propagating update to " + folderParentId);
 570                 updateFolderSize(db, String.valueOf(folderParentId));
 571             } else {
 572                 Log_OC.d("FileContentProvider", "NOT propagating to " + folderParentId);
 573             }
 574         } else {
 575             Log_OC.d("FileContentProvider", "NOT updating, sizes are " + folderSize + " and " + childrenSize);
 576         }
 577         return count;
 578     }
 579 */
 580
 581     @Override
 582     public ContentProviderResult[] applyBatch (ArrayList<ContentProviderOperation> operations)
 583             throws OperationApplicationException {
 584         Log_OC.d("FileContentProvider", "applying batch in provider " + this +
 585                 " (temporary: " + isTemporary() + ")" );
 586         ContentProviderResult[] results = new ContentProviderResult[operations.size()];
 587         int i=0;
 588
 589         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 590         db.beginTransaction();  // it's supposed that transactions can be nested
 591         try {
 592             for (ContentProviderOperation operation : operations) {
 593                 results[i] = operation.apply(this, results, i);
 594                 i++;
 595             }
 596             db.setTransactionSuccessful();
 597         } finally {
 598             db.endTransaction();
 599         }
 600         Log_OC.d("FileContentProvider", "applied batch in provider " + this);
 601         return results;
 602     }
 603
 604
 605     class DataBaseHelper extends SQLiteOpenHelper {
 606
 607         public DataBaseHelper(Context context) {
 608             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 609
 610         }
 611
 612         @Override
 613         public void onCreate(SQLiteDatabase db) {
 614             // files table
 615             Log_OC.i("SQL", "Entering in onCreate");
 616             db.execSQL("CREATE TABLE " + ProviderTableMeta.FILE_TABLE_NAME + "("
 617                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 618                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 619                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 620                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 621                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 622                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 623                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 624                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 625                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 626                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 627                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 628                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER, "
 629                     + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " INTEGER, "
 630                     + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " INTEGER, "
 631                     + ProviderTableMeta.FILE_ETAG + " TEXT, "
 632                     + ProviderTableMeta.FILE_SHARE_BY_LINK + " INTEGER, "
 633                     + ProviderTableMeta.FILE_PUBLIC_LINK  + " TEXT, "
 634                     + ProviderTableMeta.FILE_PERMISSIONS  + " TEXT null,"
 635                     + ProviderTableMeta.FILE_REMOTE_ID  + " TEXT null,"
 636                     + ProviderTableMeta.FILE_UPDATE_THUMBNAIL  + " INTEGER," //boolean
 637                     + ProviderTableMeta.FILE_IS_DOWNLOADING  + " INTEGER);" //boolean
 638                     );
 639
 640             // Create table ocshares
 641             db.execSQL("CREATE TABLE " + ProviderTableMeta.OCSHARES_TABLE_NAME + "("
 642                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 643                     + ProviderTableMeta.OCSHARES_FILE_SOURCE + " INTEGER, "
 644                     + ProviderTableMeta.OCSHARES_ITEM_SOURCE + " INTEGER, "
 645                     + ProviderTableMeta.OCSHARES_SHARE_TYPE + " INTEGER, "
 646                     + ProviderTableMeta.OCSHARES_SHARE_WITH + " TEXT, "
 647                     + ProviderTableMeta.OCSHARES_PATH + " TEXT, "
 648                     + ProviderTableMeta.OCSHARES_PERMISSIONS+ " INTEGER, "
 649                     + ProviderTableMeta.OCSHARES_SHARED_DATE + " INTEGER, "
 650                     + ProviderTableMeta.OCSHARES_EXPIRATION_DATE + " INTEGER, "
 651                     + ProviderTableMeta.OCSHARES_TOKEN + " TEXT, "
 652                     + ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME + " TEXT, "
 653                     + ProviderTableMeta.OCSHARES_IS_DIRECTORY + " INTEGER, "  // boolean
 654                     + ProviderTableMeta.OCSHARES_USER_ID + " INTEGER, "
 655                     + ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED + " INTEGER,"
 656                     + ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + " TEXT );" );
 657         }
 658
 659         @Override
 660         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 661             Log_OC.i("SQL", "Entering in onUpgrade");
 662             boolean upgraded = false;
 663             if (oldVersion == 1 && newVersion >= 2) {
 664                 Log_OC.i("SQL", "Entering in the #1 ADD in onUpgrade");
 665                 db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 666                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 667                            " DEFAULT 0");
 668                 upgraded = true;
 669             }
 670             if (oldVersion < 3 && newVersion >= 3) {
 671                 Log_OC.i("SQL", "Entering in the #2 ADD in onUpgrade");
 672                 db.beginTransaction();
 673                 try {
 674                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 675                                " ADD COLUMN " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA  +
 676                                " INTEGER " + " DEFAULT 0");
 677
 678                     // assume there are not local changes pending to upload
 679                     db.execSQL("UPDATE " + ProviderTableMeta.FILE_TABLE_NAME +
 680                             " SET " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " = "
 681                             + System.currentTimeMillis() +
 682                             " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 683
 684                     upgraded = true;
 685                     db.setTransactionSuccessful();
 686                 } finally {
 687                     db.endTransaction();
 688                 }
 689             }
 690             if (oldVersion < 4 && newVersion >= 4) {
 691                 Log_OC.i("SQL", "Entering in the #3 ADD in onUpgrade");
 692                 db.beginTransaction();
 693                 try {
 694                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 695                             " ADD COLUMN " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA +
 696                             " INTEGER " + " DEFAULT 0");
 697
 698                     db.execSQL("UPDATE " + ProviderTableMeta.FILE_TABLE_NAME +
 699                            " SET " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " = " +
 700                             ProviderTableMeta.FILE_MODIFIED +
 701                            " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 702
 703                     upgraded = true;
 704                     db.setTransactionSuccessful();
 705                 } finally {
 706                     db.endTransaction();
 707                 }
 708             }
 709             if (!upgraded)
 710                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 711                         ", newVersion == " + newVersion);
 712
 713             if (oldVersion < 5 && newVersion >= 5) {
 714                 Log_OC.i("SQL", "Entering in the #4 ADD in onUpgrade");
 715                 db.beginTransaction();
 716                 try {
 717                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 718                             " ADD COLUMN " + ProviderTableMeta.FILE_ETAG + " TEXT " +
 719                             " DEFAULT NULL");
 720
 721                     upgraded = true;
 722                     db.setTransactionSuccessful();
 723                 } finally {
 724                     db.endTransaction();
 725                 }
 726             }
 727             if (!upgraded)
 728                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 729                         ", newVersion == " + newVersion);
 730
 731             if (oldVersion < 6 && newVersion >= 6) {
 732                 Log_OC.i("SQL", "Entering in the #5 ADD in onUpgrade");
 733                 db.beginTransaction();
 734                 try {
 735                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 736                             " ADD COLUMN " + ProviderTableMeta.FILE_SHARE_BY_LINK + " INTEGER " +
 737                             " DEFAULT 0");
 738
 739                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 740                             " ADD COLUMN " + ProviderTableMeta.FILE_PUBLIC_LINK + " TEXT " +
 741                             " DEFAULT NULL");
 742
 743                     // Create table ocshares
 744                     db.execSQL("CREATE TABLE " + ProviderTableMeta.OCSHARES_TABLE_NAME + "("
 745                             + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 746                             + ProviderTableMeta.OCSHARES_FILE_SOURCE + " INTEGER, "
 747                             + ProviderTableMeta.OCSHARES_ITEM_SOURCE + " INTEGER, "
 748                             + ProviderTableMeta.OCSHARES_SHARE_TYPE + " INTEGER, "
 749                             + ProviderTableMeta.OCSHARES_SHARE_WITH + " TEXT, "
 750                             + ProviderTableMeta.OCSHARES_PATH + " TEXT, "
 751                             + ProviderTableMeta.OCSHARES_PERMISSIONS + " INTEGER, "
 752                             + ProviderTableMeta.OCSHARES_SHARED_DATE + " INTEGER, "
 753                             + ProviderTableMeta.OCSHARES_EXPIRATION_DATE + " INTEGER, "
 754                             + ProviderTableMeta.OCSHARES_TOKEN + " TEXT, "
 755                             + ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME + " TEXT, "
 756                             + ProviderTableMeta.OCSHARES_IS_DIRECTORY + " INTEGER, "  // boolean
 757                             + ProviderTableMeta.OCSHARES_USER_ID + " INTEGER, "
 758                             + ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED + " INTEGER,"
 759                             + ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + " TEXT );");
 760
 761                     upgraded = true;
 762                     db.setTransactionSuccessful();
 763                 } finally {
 764                     db.endTransaction();
 765                 }
 766             }
 767             if (!upgraded)
 768                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 769                         ", newVersion == " + newVersion);
 770
 771             if (oldVersion < 7 && newVersion >= 7) {
 772                 Log_OC.i("SQL", "Entering in the #7 ADD in onUpgrade");
 773                 db.beginTransaction();
 774                 try {
 775                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 776                             " ADD COLUMN " + ProviderTableMeta.FILE_PERMISSIONS + " TEXT " +
 777                             " DEFAULT NULL");
 778
 779                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 780                             " ADD COLUMN " + ProviderTableMeta.FILE_REMOTE_ID + " TEXT " +
 781                             " DEFAULT NULL");
 782
 783                     upgraded = true;
 784                     db.setTransactionSuccessful();
 785                 } finally {
 786                     db.endTransaction();
 787                 }
 788             }
 789             if (!upgraded)
 790                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 791                         ", newVersion == " + newVersion);
 792
 793             if (oldVersion < 8 && newVersion >= 8) {
 794                 Log_OC.i("SQL", "Entering in the #8 ADD in onUpgrade");
 795                 db.beginTransaction();
 796                 try {
 797                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 798                             " ADD COLUMN " + ProviderTableMeta.FILE_UPDATE_THUMBNAIL + " INTEGER " +
 799                             " DEFAULT 0");
 800
 801                     upgraded = true;
 802                     db.setTransactionSuccessful();
 803                 } finally {
 804                     db.endTransaction();
 805                 }
 806             }
 807             if (!upgraded)
 808                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 809                         ", newVersion == " + newVersion);
 810
 811             if (oldVersion < 9 && newVersion >= 9) {
 812                 Log_OC.i("SQL", "Entering in the #9 ADD in onUpgrade");
 813                 db.beginTransaction();
 814                 try {
 815                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 816                             " ADD COLUMN " + ProviderTableMeta.FILE_IS_DOWNLOADING + " INTEGER " +
 817                             " DEFAULT 0");
 818
 819                     upgraded = true;
 820                     db.setTransactionSuccessful();
 821                 } finally {
 822                     db.endTransaction();
 823                 }
 824             }
 825             if (!upgraded)
 826                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 827                         ", newVersion == " + newVersion);
 828
 829             if (oldVersion < 10 && newVersion >= 10) {
 830                 Log_OC.i("SQL", "Entering in the #10 ADD in onUpgrade");
 831                 updateAccountName(db);
 832                 upgraded = true;
 833             }
 834              if (!upgraded)
 835                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion +
 836                         ", newVersion == " + newVersion);
 837         }
 838     }
 839
 840
 841     /**
 842      * Version 10 of database does not modify its scheme. It coincides with the upgrade of the ownCloud account names
 843      * structure to include in it the path to the server instance. Updating the account names and path to local files
 844      * in the files table is a must to keep the existing account working and the database clean.
 845      *
 846      * See {@link com.owncloud.android.authentication.AccountUtils#updateAccountVersion(android.content.Context)}
 847      *
 848      * @param db        Database where table of files is included.
 849      */
 850     private void updateAccountName(SQLiteDatabase db){
 851         Log_OC.d("SQL", "THREAD:  "+ Thread.currentThread().getName());
 852         AccountManager ama = AccountManager.get(getContext());
 853         try {
 854             // get accounts from AccountManager ;  we can't be sure if accounts in it are updated or not although
 855             // we know the update was previously done in {link @FileActivity#onCreate} because the changes through
 856             // AccountManager are not synchronous
 857             Account[] accounts = AccountManager.get(getContext()).getAccountsByType(
 858                     MainApp.getAccountType());
 859             String serverUrl, username, oldAccountName, newAccountName;
 860                         for (Account account : accounts) {
 861                 // build both old and new account name
 862                 serverUrl = ama.getUserData(account, AccountUtils.Constants.KEY_OC_BASE_URL);
 863                 username = account.name.substring(0, account.name.lastIndexOf('@'));
 864                 oldAccountName = AccountUtils.buildAccountNameOld(Uri.parse(serverUrl), username);
 865                 newAccountName = AccountUtils.buildAccountName(Uri.parse(serverUrl), username);
 866
 867                 // update values in database
 868                 db.beginTransaction();
 869                 try {
 870                     ContentValues cv = new ContentValues();
 871                     cv.put(ProviderTableMeta.FILE_ACCOUNT_OWNER, newAccountName);
 872                     int num = db.update(ProviderTableMeta.FILE_TABLE_NAME,
 873                             cv,
 874                             ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
 875                             new String[]{oldAccountName});
 876
 877                     Log_OC.d("SQL", "Updated account in database: old name == " + oldAccountName +
 878                             ", new name == " + newAccountName + " (" + num + " rows updated )");
 879
 880                     // update path for downloaded files
 881                     updateDownloadedFiles(db, newAccountName, oldAccountName);
 882
 883                     db.setTransactionSuccessful();
 884
 885                 } catch (SQLException e) {
 886                     Log_OC.e(TAG, "SQL Exception upgrading account names or paths in database", e);
 887                 } finally {
 888                     db.endTransaction();
 889                 }
 890                         }
 891         } catch (Exception e) {
 892             Log_OC.e(TAG, "Exception upgrading account names or paths in database", e);
 893         }
 894     }
 895
 896
 897     /**
 898      * Rename the local ownCloud folder of one account to match the a rename of the account itself. Updates the
 899      * table of files in database so that the paths to the local files keep being the same.
 900      *
 901      * @param db                    Database where table of files is included.
 902      * @param newAccountName        New name for the target OC account.
 903      * @param oldAccountName        Old name of the target OC account.
 904      */
 905     private void updateDownloadedFiles(SQLiteDatabase db, String newAccountName,
 906                                        String oldAccountName) {
 907
 908         String whereClause = ProviderTableMeta.FILE_ACCOUNT_OWNER + "=? AND " +
 909                 ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL";
 910
 911         Cursor c = db.query(ProviderTableMeta.FILE_TABLE_NAME,
 912                 null,
 913                 whereClause,
 914                 new String[] { newAccountName },
 915                 null, null, null);
 916
 917         try {
 918             if (c.moveToFirst()) {
 919                 // create storage path
 920                 String oldAccountPath = FileStorageUtils.getSavePath(oldAccountName);
 921                 String newAccountPath = FileStorageUtils.getSavePath(newAccountName);
 922
 923                 // move files
 924                 File oldAccountFolder = new File(oldAccountPath);
 925                 File newAccountFolder = new File(newAccountPath);
 926                 oldAccountFolder.renameTo(newAccountFolder);
 927
 928                 // update database
 929                 do {
 930                     // Update database
 931                     String oldPath = c.getString(
 932                             c.getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH));
 933                     OCFile file = new OCFile(
 934                             c.getString(c.getColumnIndex(ProviderTableMeta.FILE_PATH)));
 935                     String newPath = FileStorageUtils.getDefaultSavePathFor(newAccountName, file);
 936
 937                     ContentValues cv = new ContentValues();
 938                     cv.put(ProviderTableMeta.FILE_STORAGE_PATH, newPath);
 939                     db.update(ProviderTableMeta.FILE_TABLE_NAME,
 940                             cv,
 941                             ProviderTableMeta.FILE_STORAGE_PATH + "=?",
 942                             new String[]{oldPath});
 943
 944                     Log_OC.v("SQL", "Updated path of downloaded file: old file name == " + oldPath +
 945                             ", new file name == " + newPath);
 946
 947                 } while (c.moveToNext());
 948             }
 949         } finally {
 950             c.close();
 951         }
 952
 953     }
 954
 955 }