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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  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.providers;
  20
  21 import java.util.ArrayList;
  22 import java.util.HashMap;
  23
  24 import com.owncloud.android.R;
  25 import com.owncloud.android.db.ProviderMeta;
  26 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  27 import com.owncloud.android.lib.resources.shares.ShareType;
  28 import com.owncloud.android.utils.Log_OC;
  29
  30
  31
  32 import android.content.ContentProvider;
  33 import android.content.ContentProviderOperation;
  34 import android.content.ContentProviderResult;
  35 import android.content.ContentUris;
  36 import android.content.ContentValues;
  37 import android.content.Context;
  38 import android.content.OperationApplicationException;
  39 import android.content.UriMatcher;
  40 import android.database.Cursor;
  41 import android.database.SQLException;
  42 import android.database.sqlite.SQLiteDatabase;
  43 import android.database.sqlite.SQLiteOpenHelper;
  44 import android.database.sqlite.SQLiteQueryBuilder;
  45 import android.net.Uri;
  46 import android.text.TextUtils;
  47
  48 /**
  49  * The ContentProvider for the ownCloud App.
  50  *
  51  * @author Bartek Przybylski
  52  * @author David A. Velasco
  53  *
  54  */
  55 public class FileContentProvider extends ContentProvider {
  56
  57     private DataBaseHelper mDbHelper;
  58
  59     // Projection for filelist table
  60     private static HashMap<String, String> mFileProjectionMap;
  61     static {
  62         mFileProjectionMap = new HashMap<String, String>();
  63         mFileProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
  64         mFileProjectionMap.put(ProviderTableMeta.FILE_PARENT,
  65                 ProviderTableMeta.FILE_PARENT);
  66         mFileProjectionMap.put(ProviderTableMeta.FILE_PATH,
  67                 ProviderTableMeta.FILE_PATH);
  68         mFileProjectionMap.put(ProviderTableMeta.FILE_NAME,
  69                 ProviderTableMeta.FILE_NAME);
  70         mFileProjectionMap.put(ProviderTableMeta.FILE_CREATION,
  71                 ProviderTableMeta.FILE_CREATION);
  72         mFileProjectionMap.put(ProviderTableMeta.FILE_MODIFIED,
  73                 ProviderTableMeta.FILE_MODIFIED);
  74         mFileProjectionMap.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA,
  75                 ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA);
  76         mFileProjectionMap.put(ProviderTableMeta.FILE_CONTENT_LENGTH,
  77                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  78         mFileProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  79                 ProviderTableMeta.FILE_CONTENT_TYPE);
  80         mFileProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  81                 ProviderTableMeta.FILE_STORAGE_PATH);
  82         mFileProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  83                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  84         mFileProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA,
  85                 ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA);
  86         mFileProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  87                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  88         mFileProjectionMap.put(ProviderTableMeta.FILE_ACCOUNT_OWNER,
  89                 ProviderTableMeta.FILE_ACCOUNT_OWNER);
  90         mFileProjectionMap.put(ProviderTableMeta.FILE_ETAG,
  91                 ProviderTableMeta.FILE_ETAG);
  92         mFileProjectionMap.put(ProviderTableMeta.FILE_SHARE_BY_LINK,
  93                 ProviderTableMeta.FILE_SHARE_BY_LINK);
  94         mFileProjectionMap.put(ProviderTableMeta.FILE_PUBLIC_LINK,
  95                 ProviderTableMeta.FILE_PUBLIC_LINK);
  96         mFileProjectionMap.put(ProviderTableMeta.FILE_PERMISSIONS,
  97                 ProviderTableMeta.FILE_PERMISSIONS);
  98     }
  99
 100     private static final int SINGLE_FILE = 1;
 101     private static final int DIRECTORY = 2;
 102     private static final int ROOT_DIRECTORY = 3;
 103     private static final int SHARES = 4;
 104
 105     private static final String TAG = FileContentProvider.class.getSimpleName();
 106
 107     // Projection for ocshares table
 108     private static HashMap<String, String> mOCSharesProjectionMap;
 109     static {
 110         mOCSharesProjectionMap = new HashMap<String, String>();
 111         mOCSharesProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
 112         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_FILE_SOURCE,
 113                 ProviderTableMeta.OCSHARES_FILE_SOURCE);
 114         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ITEM_SOURCE,
 115                 ProviderTableMeta.OCSHARES_ITEM_SOURCE);
 116         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_TYPE,
 117                 ProviderTableMeta.OCSHARES_SHARE_TYPE);
 118         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_WITH,
 119                 ProviderTableMeta.OCSHARES_SHARE_WITH);
 120         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_PATH,
 121                 ProviderTableMeta.OCSHARES_PATH);
 122         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_PERMISSIONS,
 123                 ProviderTableMeta.OCSHARES_PERMISSIONS);
 124         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARED_DATE,
 125                 ProviderTableMeta.OCSHARES_SHARED_DATE);
 126         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_EXPIRATION_DATE,
 127                 ProviderTableMeta.OCSHARES_EXPIRATION_DATE);
 128         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_TOKEN,
 129                 ProviderTableMeta.OCSHARES_TOKEN);
 130         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME,
 131                 ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME);
 132         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_IS_DIRECTORY,
 133                 ProviderTableMeta.OCSHARES_IS_DIRECTORY);
 134         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_USER_ID,
 135                 ProviderTableMeta.OCSHARES_USER_ID);
 136         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED,
 137                 ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED);
 138         mOCSharesProjectionMap.put(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER,
 139                 ProviderTableMeta.OCSHARES_ACCOUNT_OWNER);
 140     }
 141
 142     private UriMatcher mUriMatcher;
 143
 144     @Override
 145     public int delete(Uri uri, String where, String[] whereArgs) {
 146         //Log_OC.d(TAG, "Deleting " + uri + " at provider " + this);
 147         int count = 0;
 148         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 149         db.beginTransaction();
 150         try {
 151             count = delete(db, uri, where, whereArgs);
 152             db.setTransactionSuccessful();
 153         } finally {
 154             db.endTransaction();
 155         }
 156         getContext().getContentResolver().notifyChange(uri, null);
 157         return count;
 158     }
 159
 160     private int delete(SQLiteDatabase db, Uri uri, String where, String[] whereArgs) {
 161         int count = 0;
 162         switch (mUriMatcher.match(uri)) {
 163         case SINGLE_FILE:
 164             /*Cursor c = query(db, uri, null, where, whereArgs, null);
 165             String remotePath = "(unexisting)";
 166             if (c != null && c.moveToFirst()) {
 167                 remotePath = c.getString(c.getColumnIndex(ProviderTableMeta.FILE_PATH));
 168             }
 169             Log_OC.d(TAG, "Removing FILE " + remotePath);
 170             */
 171             count = db.delete(ProviderTableMeta.FILE_TABLE_NAME,
 172                     ProviderTableMeta._ID
 173                             + "="
 174                             + uri.getPathSegments().get(1)
 175                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 176                                     + ")" : ""), whereArgs);
 177             /* just for log
 178             if (c!=null) {
 179                 c.close();
 180             }
 181             */
 182             break;
 183         case DIRECTORY:
 184             // deletion of folder is recursive
 185             /*
 186             Uri folderUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, Long.parseLong(uri.getPathSegments().get(1)));
 187             Cursor folder = query(db, folderUri, null, null, null, null);
 188             String folderName = "(unknown)";
 189             if (folder != null && folder.moveToFirst()) {
 190                 folderName = folder.getString(folder.getColumnIndex(ProviderTableMeta.FILE_PATH));
 191             }
 192             */
 193             Cursor children = query(uri, null, null, null, null);
 194             if (children != null && children.moveToFirst())  {
 195                 long childId;
 196                 boolean isDir;
 197                 //String remotePath;
 198                 while (!children.isAfterLast()) {
 199                     childId = children.getLong(children.getColumnIndex(ProviderTableMeta._ID));
 200                     isDir = "DIR".equals(children.getString(children.getColumnIndex(ProviderTableMeta.FILE_CONTENT_TYPE)));
 201                     //remotePath = children.getString(children.getColumnIndex(ProviderTableMeta.FILE_PATH));
 202                     if (isDir) {
 203                         count += delete(db, ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_DIR, childId), null, null);
 204                     } else {
 205                         count += delete(db, ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, childId), null, null);
 206                     }
 207                     children.moveToNext();
 208                 }
 209                 children.close();
 210             } /*else {
 211                 Log_OC.d(TAG, "No child to remove in DIRECTORY " + folderName);
 212             }
 213             Log_OC.d(TAG, "Removing DIRECTORY " + folderName + " (or maybe not) ");
 214             */
 215             count += db.delete(ProviderTableMeta.FILE_TABLE_NAME,
 216                     ProviderTableMeta._ID
 217                     + "="
 218                     + uri.getPathSegments().get(1)
 219                     + (!TextUtils.isEmpty(where) ? " AND (" + where
 220                             + ")" : ""), whereArgs);
 221             /* Just for log
 222              if (folder != null) {
 223                 folder.close();
 224             }*/
 225             break;
 226         case ROOT_DIRECTORY:
 227             //Log_OC.d(TAG, "Removing ROOT!");
 228             count = db.delete(ProviderTableMeta.FILE_TABLE_NAME, where, whereArgs);
 229             break;
 230         case SHARES:
 231             count = db.delete(ProviderTableMeta.OCSHARES_TABLE_NAME, where, whereArgs);
 232             break;
 233         default:
 234             //Log_OC.e(TAG, "Unknown uri " + uri);
 235             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 236         }
 237         return count;
 238     }
 239
 240
 241     @Override
 242     public String getType(Uri uri) {
 243         switch (mUriMatcher.match(uri)) {
 244         case ROOT_DIRECTORY:
 245             return ProviderTableMeta.CONTENT_TYPE;
 246         case SINGLE_FILE:
 247             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 248         default:
 249             throw new IllegalArgumentException("Unknown Uri id."
 250                     + uri.toString());
 251         }
 252     }
 253
 254     @Override
 255     public Uri insert(Uri uri, ContentValues values) {
 256         //Log_OC.d(TAG, "Inserting " + values.getAsString(ProviderTableMeta.FILE_PATH) + " at provider " + this);
 257         Uri newUri = null;
 258         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 259         db.beginTransaction();
 260         try {
 261             newUri = insert(db, uri, values);
 262             db.setTransactionSuccessful();
 263         } finally {
 264             db.endTransaction();
 265         }
 266         getContext().getContentResolver().notifyChange(newUri, null);
 267         return newUri;
 268     }
 269
 270     private Uri insert(SQLiteDatabase db, Uri uri, ContentValues values) {
 271         switch (mUriMatcher.match(uri)){
 272         case ROOT_DIRECTORY:
 273         case SINGLE_FILE:
 274             String remotePath = values.getAsString(ProviderTableMeta.FILE_PATH);
 275             String accountName = values.getAsString(ProviderTableMeta.FILE_ACCOUNT_OWNER);
 276             String[] projection = new String[] {ProviderTableMeta._ID, ProviderTableMeta.FILE_PATH, ProviderTableMeta.FILE_ACCOUNT_OWNER };
 277             String where = ProviderTableMeta.FILE_PATH + "=? AND " + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?";
 278             String[] whereArgs = new String[] {remotePath, accountName};
 279             Cursor doubleCheck = query(db, uri, projection, where, whereArgs, null);
 280             if (doubleCheck == null || !doubleCheck.moveToFirst()) {    // ugly patch; serious refactorization is needed to reduce work in FileDataStorageManager and bring it to FileContentProvider
 281                 long rowId = db.insert(ProviderTableMeta.FILE_TABLE_NAME, null, values);
 282                 if (rowId > 0) {
 283                     Uri insertedFileUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, rowId);
 284                     //Log_OC.d(TAG, "Inserted " + values.getAsString(ProviderTableMeta.FILE_PATH) + " at provider " + this);
 285                     return insertedFileUri;
 286                 } else {
 287                     //Log_OC.d(TAG, "Error while inserting " + values.getAsString(ProviderTableMeta.FILE_PATH)  + " at provider " + this);
 288                     throw new SQLException("ERROR " + uri);
 289                 }
 290             } else {
 291                 // file is already inserted; race condition, let's avoid a duplicated entry
 292                 Uri insertedFileUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_FILE, doubleCheck.getLong(doubleCheck.getColumnIndex(ProviderTableMeta._ID)));
 293                 doubleCheck.close();
 294
 295                 return insertedFileUri;
 296             }
 297
 298         case SHARES:
 299             String path = values.getAsString(ProviderTableMeta.OCSHARES_PATH);
 300             String accountNameShare= values.getAsString(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER);
 301             String[] projectionShare = new String[] {ProviderTableMeta._ID, ProviderTableMeta.OCSHARES_PATH, ProviderTableMeta.OCSHARES_ACCOUNT_OWNER };
 302             String whereShare = ProviderTableMeta.OCSHARES_PATH + "=? AND " + ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + "=?";
 303             String[] whereArgsShare = new String[] {path, accountNameShare};
 304             Uri insertedShareUri = null;
 305             Cursor doubleCheckShare = query(db, uri, projectionShare, whereShare, whereArgsShare, null);
 306             if (doubleCheckShare == null || !doubleCheckShare.moveToFirst()) {    // ugly patch; serious refactorization is needed to reduce work in FileDataStorageManager and bring it to FileContentProvider
 307                 long rowId = db.insert(ProviderTableMeta.OCSHARES_TABLE_NAME, null, values);
 308                 if (rowId >0) {
 309                     insertedShareUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_SHARE, rowId);
 310                 } else {
 311                     throw new SQLException("ERROR " + uri);
 312
 313                 }
 314             } else {
 315                 // file is already inserted; race condition, let's avoid a duplicated entry
 316                 insertedShareUri = ContentUris.withAppendedId(ProviderTableMeta.CONTENT_URI_SHARE, doubleCheckShare.getLong(doubleCheckShare.getColumnIndex(ProviderTableMeta._ID)));
 317                 doubleCheckShare.close();
 318             }
 319             updateFilesTableAccordingToShareInsertion(db, uri, values);
 320             return insertedShareUri;
 321
 322
 323         default:
 324             throw new IllegalArgumentException("Unknown uri id: " + uri);
 325         }
 326
 327     }
 328
 329     private void updateFilesTableAccordingToShareInsertion(SQLiteDatabase db, Uri uri, ContentValues shareValues) {
 330         ContentValues fileValues = new ContentValues();
 331         fileValues.put(ProviderTableMeta.FILE_SHARE_BY_LINK,
 332                             ShareType.PUBLIC_LINK.getValue() == shareValues.getAsInteger(ProviderTableMeta.OCSHARES_SHARE_TYPE)? 1 : 0);
 333         String whereShare = ProviderTableMeta.FILE_PATH + "=? AND " + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?";
 334         String[] whereArgsShare = new String[] {
 335                 shareValues.getAsString(ProviderTableMeta.OCSHARES_PATH),
 336                 shareValues.getAsString(ProviderTableMeta.OCSHARES_ACCOUNT_OWNER)
 337         };
 338         db.update(ProviderTableMeta.FILE_TABLE_NAME, fileValues, whereShare, whereArgsShare);
 339     }
 340
 341
 342     @Override
 343     public boolean onCreate() {
 344         mDbHelper = new DataBaseHelper(getContext());
 345
 346         String authority = getContext().getResources().getString(R.string.authority);
 347         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
 348         mUriMatcher.addURI(authority, null, ROOT_DIRECTORY);
 349         mUriMatcher.addURI(authority, "file/", SINGLE_FILE);
 350         mUriMatcher.addURI(authority, "file/#", SINGLE_FILE);
 351         mUriMatcher.addURI(authority, "dir/", DIRECTORY);
 352         mUriMatcher.addURI(authority, "dir/#", DIRECTORY);
 353         mUriMatcher.addURI(authority, "shares/", SHARES);
 354         mUriMatcher.addURI(authority, "shares/#", SHARES);
 355
 356         return true;
 357     }
 358
 359
 360     @Override
 361     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
 362         Cursor result = null;
 363         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 364         db.beginTransaction();
 365         try {
 366             result = query(db, uri, projection, selection, selectionArgs, sortOrder);
 367             db.setTransactionSuccessful();
 368         } finally {
 369             db.endTransaction();
 370         }
 371         return result;
 372     }
 373
 374     private Cursor query(SQLiteDatabase db, Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
 375         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 376
 377         sqlQuery.setTables(ProviderTableMeta.FILE_TABLE_NAME);
 378         sqlQuery.setProjectionMap(mFileProjectionMap);
 379
 380         switch (mUriMatcher.match(uri)) {
 381         case ROOT_DIRECTORY:
 382             break;
 383         case DIRECTORY:
 384             String folderId = uri.getPathSegments().get(1);
 385             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 386                     + folderId);
 387             break;
 388         case SINGLE_FILE:
 389             if (uri.getPathSegments().size() > 1) {
 390                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 391                         + uri.getPathSegments().get(1));
 392             }
 393             break;
 394         case SHARES:
 395             sqlQuery.setTables(ProviderTableMeta.OCSHARES_TABLE_NAME);
 396             sqlQuery.setProjectionMap(mOCSharesProjectionMap);
 397             if (uri.getPathSegments().size() > 1) {
 398                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 399                         + uri.getPathSegments().get(1));
 400             }
 401             break;
 402         default:
 403             throw new IllegalArgumentException("Unknown uri id: " + uri);
 404         }
 405
 406         String order;
 407         if (TextUtils.isEmpty(sortOrder)) {
 408             if (mUriMatcher.match(uri) == SHARES) {
 409                 order = ProviderTableMeta.OCSHARES_DEFAULT_SORT_ORDER;
 410             } else {
 411
 412                 order = ProviderTableMeta.FILE_DEFAULT_SORT_ORDER;
 413             }
 414         } else {
 415             order = sortOrder;
 416         }
 417
 418         // DB case_sensitive
 419         db.execSQL("PRAGMA case_sensitive_like = true");
 420         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs, null, null, order);
 421         Log_OC.d(TAG, "setting notification URI: " + uri);
 422         c.setNotificationUri(getContext().getContentResolver(), uri);
 423         return c;
 424     }
 425
 426     @Override
 427     public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
 428
 429         //Log_OC.d(TAG, "Updating " + values.getAsString(ProviderTableMeta.FILE_PATH) + " at provider " + this);
 430         int count = 0;
 431         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 432         db.beginTransaction();
 433         try {
 434             count = update(db, uri, values, selection, selectionArgs);
 435             db.setTransactionSuccessful();
 436         } finally {
 437             db.endTransaction();
 438         }
 439         getContext().getContentResolver().notifyChange(uri, null);
 440         return count;
 441     }
 442
 443
 444
 445     private int update(SQLiteDatabase db, Uri uri, ContentValues values, String selection, String[] selectionArgs) {
 446         switch (mUriMatcher.match(uri)) {
 447             case DIRECTORY:
 448                 return  0; //updateFolderSize(db, selectionArgs[0]);
 449             case SHARES:
 450                 return db.update(ProviderTableMeta.OCSHARES_TABLE_NAME, values, selection, selectionArgs);
 451             default:
 452                 return db.update(ProviderTableMeta.FILE_TABLE_NAME, values, selection, selectionArgs);
 453         }
 454     }
 455
 456  /*
 457     private int updateFolderSize(SQLiteDatabase db, String folderId) {
 458         int count = 0;
 459         String [] whereArgs = new String[] { folderId };
 460
 461         // read current size saved for the folder
 462         long folderSize = 0;
 463         long folderParentId = -1;
 464         Uri selectFolderUri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_FILE, folderId);
 465         String[] folderProjection = new String[] { ProviderTableMeta.FILE_CONTENT_LENGTH,  ProviderTableMeta.FILE_PARENT};
 466         String folderWhere = ProviderTableMeta._ID + "=?";
 467         Cursor folderCursor = query(db, selectFolderUri, folderProjection, folderWhere, whereArgs, null);
 468         if (folderCursor != null && folderCursor.moveToFirst()) {
 469             folderSize = folderCursor.getLong(folderCursor.getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH));;
 470             folderParentId = folderCursor.getLong(folderCursor.getColumnIndex(ProviderTableMeta.FILE_PARENT));;
 471         }
 472         folderCursor.close();
 473
 474         // read and sum sizes of children
 475         long childrenSize = 0;
 476         Uri selectChildrenUri = Uri.withAppendedPath(ProviderTableMeta.CONTENT_URI_DIR, folderId);
 477         String[] childrenProjection = new String[] { ProviderTableMeta.FILE_CONTENT_LENGTH,  ProviderTableMeta.FILE_PARENT};
 478         String childrenWhere = ProviderTableMeta.FILE_PARENT + "=?";
 479         Cursor childrenCursor = query(db, selectChildrenUri, childrenProjection, childrenWhere, whereArgs, null);
 480         if (childrenCursor != null && childrenCursor.moveToFirst()) {
 481             while (!childrenCursor.isAfterLast()) {
 482                 childrenSize += childrenCursor.getLong(childrenCursor.getColumnIndex(ProviderTableMeta.FILE_CONTENT_LENGTH));
 483                 childrenCursor.moveToNext();
 484             }
 485         }
 486         childrenCursor.close();
 487
 488         // update if needed
 489         if (folderSize != childrenSize) {
 490             Log_OC.d("FileContentProvider", "Updating " + folderSize + " to " + childrenSize);
 491             ContentValues cv = new ContentValues();
 492             cv.put(ProviderTableMeta.FILE_CONTENT_LENGTH, childrenSize);
 493             count = db.update(ProviderTableMeta.FILE_TABLE_NAME, cv, folderWhere, whereArgs);
 494
 495             // propagate update until root
 496             if (folderParentId > FileDataStorageManager.ROOT_PARENT_ID) {
 497                 Log_OC.d("FileContentProvider", "Propagating update to " + folderParentId);
 498                 updateFolderSize(db, String.valueOf(folderParentId));
 499             } else {
 500                 Log_OC.d("FileContentProvider", "NOT propagating to " + folderParentId);
 501             }
 502         } else {
 503             Log_OC.d("FileContentProvider", "NOT updating, sizes are " + folderSize + " and " + childrenSize);
 504         }
 505         return count;
 506     }
 507 */
 508
 509     @Override
 510     public ContentProviderResult[] applyBatch (ArrayList<ContentProviderOperation> operations) throws OperationApplicationException {
 511         Log_OC.d("FileContentProvider", "applying batch in provider " + this + " (temporary: " + isTemporary() + ")" );
 512         ContentProviderResult[] results = new ContentProviderResult[operations.size()];
 513         int i=0;
 514
 515         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 516         db.beginTransaction();  // it's supposed that transactions can be nested
 517         try {
 518             for (ContentProviderOperation operation : operations) {
 519                 results[i] = operation.apply(this, results, i);
 520                 i++;
 521             }
 522             db.setTransactionSuccessful();
 523         } finally {
 524             db.endTransaction();
 525         }
 526         Log_OC.d("FileContentProvider", "applied batch in provider " + this);
 527         return results;
 528     }
 529
 530
 531     class DataBaseHelper extends SQLiteOpenHelper {
 532
 533         public DataBaseHelper(Context context) {
 534             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 535
 536         }
 537
 538         @Override
 539         public void onCreate(SQLiteDatabase db) {
 540             // files table
 541             Log_OC.i("SQL", "Entering in onCreate");
 542             db.execSQL("CREATE TABLE " + ProviderTableMeta.FILE_TABLE_NAME + "("
 543                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 544                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 545                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 546                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 547                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 548                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 549                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 550                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 551                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 552                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 553                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 554                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER, "
 555                     + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " INTEGER, "
 556                     + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " INTEGER, "
 557                     + ProviderTableMeta.FILE_ETAG + " TEXT, "
 558                     + ProviderTableMeta.FILE_SHARE_BY_LINK + " INTEGER, "
 559                     + ProviderTableMeta.FILE_PUBLIC_LINK  + " TEXT, "
 560                     + ProviderTableMeta.FILE_PERMISSIONS  + " TEXT null);"
 561                     );
 562
 563             // Create table ocshares
 564             db.execSQL("CREATE TABLE " + ProviderTableMeta.OCSHARES_TABLE_NAME + "("
 565                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 566                     + ProviderTableMeta.OCSHARES_FILE_SOURCE + " INTEGER, "
 567                     + ProviderTableMeta.OCSHARES_ITEM_SOURCE + " INTEGER, "
 568                     + ProviderTableMeta.OCSHARES_SHARE_TYPE + " INTEGER, "
 569                     + ProviderTableMeta.OCSHARES_SHARE_WITH + " TEXT, "
 570                     + ProviderTableMeta.OCSHARES_PATH + " TEXT, "
 571                     + ProviderTableMeta.OCSHARES_PERMISSIONS+ " INTEGER, "
 572                     + ProviderTableMeta.OCSHARES_SHARED_DATE + " INTEGER, "
 573                     + ProviderTableMeta.OCSHARES_EXPIRATION_DATE + " INTEGER, "
 574                     + ProviderTableMeta.OCSHARES_TOKEN + " TEXT, "
 575                     + ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME + " TEXT, "
 576                     + ProviderTableMeta.OCSHARES_IS_DIRECTORY + " INTEGER, "  // boolean
 577                     + ProviderTableMeta.OCSHARES_USER_ID + " INTEGER, "
 578                     + ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED + " INTEGER,"
 579                     + ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + " TEXT );" );
 580         }
 581
 582         @Override
 583         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 584             Log_OC.i("SQL", "Entering in onUpgrade");
 585             boolean upgraded = false;
 586             if (oldVersion == 1 && newVersion >= 2) {
 587                 Log_OC.i("SQL", "Entering in the #1 ADD in onUpgrade");
 588                 db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 589                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 590                            " DEFAULT 0");
 591                 upgraded = true;
 592             }
 593             if (oldVersion < 3 && newVersion >= 3) {
 594                 Log_OC.i("SQL", "Entering in the #2 ADD in onUpgrade");
 595                 db.beginTransaction();
 596                 try {
 597                     db.execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 598                                " ADD COLUMN " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA  + " INTEGER " +
 599                                " DEFAULT 0");
 600
 601                     // assume there are not local changes pending to upload
 602                     db.execSQL("UPDATE " + ProviderTableMeta.FILE_TABLE_NAME +
 603                             " SET " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " = " + System.currentTimeMillis() +
 604                             " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 605
 606                     upgraded = true;
 607                     db.setTransactionSuccessful();
 608                 } finally {
 609                     db.endTransaction();
 610                 }
 611             }
 612             if (oldVersion < 4 && newVersion >= 4) {
 613                 Log_OC.i("SQL", "Entering in the #3 ADD in onUpgrade");
 614                 db.beginTransaction();
 615                 try {
 616                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 617                            " ADD COLUMN " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA  + " INTEGER " +
 618                            " DEFAULT 0");
 619
 620                     db.execSQL("UPDATE " + ProviderTableMeta.FILE_TABLE_NAME +
 621                            " SET " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " = " + ProviderTableMeta.FILE_MODIFIED +
 622                            " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 623
 624                     upgraded = true;
 625                     db.setTransactionSuccessful();
 626                 } finally {
 627                     db.endTransaction();
 628                 }
 629             }
 630             if (!upgraded)
 631                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 632
 633             if (oldVersion < 5 && newVersion >= 5) {
 634                 Log_OC.i("SQL", "Entering in the #4 ADD in onUpgrade");
 635                 db.beginTransaction();
 636                 try {
 637                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 638                             " ADD COLUMN " + ProviderTableMeta.FILE_ETAG + " TEXT " +
 639                             " DEFAULT NULL");
 640
 641                     upgraded = true;
 642                     db.setTransactionSuccessful();
 643                 } finally {
 644                     db.endTransaction();
 645                 }
 646             }
 647             if (!upgraded)
 648                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 649
 650             if (oldVersion < 6 && newVersion >= 6) {
 651                 Log_OC.i("SQL", "Entering in the #5 ADD in onUpgrade");
 652                 db.beginTransaction();
 653                 try {
 654                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 655                             " ADD COLUMN " + ProviderTableMeta.FILE_SHARE_BY_LINK + " INTEGER " +
 656                             " DEFAULT 0");
 657
 658                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 659                             " ADD COLUMN " + ProviderTableMeta.FILE_PUBLIC_LINK + " TEXT " +
 660                             " DEFAULT NULL");
 661
 662                     db .execSQL("ALTER TABLE " + ProviderTableMeta.FILE_TABLE_NAME +
 663                             " ADD COLUMN " + ProviderTableMeta.FILE_PERMISSIONS + " TEXT " +
 664                             " DEFAULT NULL");
 665
 666                     // Create table ocshares
 667                     db.execSQL("CREATE TABLE " + ProviderTableMeta.OCSHARES_TABLE_NAME + "("
 668                             + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 669                             + ProviderTableMeta.OCSHARES_FILE_SOURCE + " INTEGER, "
 670                             + ProviderTableMeta.OCSHARES_ITEM_SOURCE + " INTEGER, "
 671                             + ProviderTableMeta.OCSHARES_SHARE_TYPE + " INTEGER, "
 672                             + ProviderTableMeta.OCSHARES_SHARE_WITH + " TEXT, "
 673                             + ProviderTableMeta.OCSHARES_PATH + " TEXT, "
 674                             + ProviderTableMeta.OCSHARES_PERMISSIONS+ " INTEGER, "
 675                             + ProviderTableMeta.OCSHARES_SHARED_DATE + " INTEGER, "
 676                             + ProviderTableMeta.OCSHARES_EXPIRATION_DATE + " INTEGER, "
 677                             + ProviderTableMeta.OCSHARES_TOKEN + " TEXT, "
 678                             + ProviderTableMeta.OCSHARES_SHARE_WITH_DISPLAY_NAME + " TEXT, "
 679                             + ProviderTableMeta.OCSHARES_IS_DIRECTORY + " INTEGER, "  // boolean
 680                             + ProviderTableMeta.OCSHARES_USER_ID + " INTEGER, "
 681                             + ProviderTableMeta.OCSHARES_ID_REMOTE_SHARED + " INTEGER,"
 682                             + ProviderTableMeta.OCSHARES_ACCOUNT_OWNER + " TEXT );" );
 683
 684                     upgraded = true;
 685                     db.setTransactionSuccessful();
 686                 } finally {
 687                     db.endTransaction();
 688                 }
 689             }
 690             if (!upgraded)
 691                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 692         }
 693     }
 694
 695 }