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.HashMap;
  22
  23 import com.owncloud.android.Log_OC;
  24 import com.owncloud.android.db.ProviderMeta;
  25 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  26
  27
  28 import android.content.ContentProvider;
  29 import android.content.ContentUris;
  30 import android.content.ContentValues;
  31 import android.content.Context;
  32 import android.content.UriMatcher;
  33 import android.database.Cursor;
  34 import android.database.SQLException;
  35 import android.database.sqlite.SQLiteDatabase;
  36 import android.database.sqlite.SQLiteOpenHelper;
  37 import android.database.sqlite.SQLiteQueryBuilder;
  38 import android.net.Uri;
  39 import android.text.TextUtils;
  40
  41 /**
  42  * The ContentProvider for the ownCloud App.
  43  *
  44  * @author Bartek Przybylski
  45  *
  46  */
  47 public class FileContentProvider extends ContentProvider {
  48
  49     private DataBaseHelper mDbHelper;
  50
  51     private static HashMap<String, String> mProjectionMap;
  52     static {
  53         mProjectionMap = new HashMap<String, String>();
  54         mProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
  55         mProjectionMap.put(ProviderTableMeta.FILE_PARENT,
  56                 ProviderTableMeta.FILE_PARENT);
  57         mProjectionMap.put(ProviderTableMeta.FILE_PATH,
  58                 ProviderTableMeta.FILE_PATH);
  59         mProjectionMap.put(ProviderTableMeta.FILE_NAME,
  60                 ProviderTableMeta.FILE_NAME);
  61         mProjectionMap.put(ProviderTableMeta.FILE_CREATION,
  62                 ProviderTableMeta.FILE_CREATION);
  63         mProjectionMap.put(ProviderTableMeta.FILE_MODIFIED,
  64                 ProviderTableMeta.FILE_MODIFIED);
  65         mProjectionMap.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA,
  66                 ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA);
  67         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_LENGTH,
  68                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  69         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  70                 ProviderTableMeta.FILE_CONTENT_TYPE);
  71         mProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  72                 ProviderTableMeta.FILE_STORAGE_PATH);
  73         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  74                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  75         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA,
  76                 ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA);
  77         mProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  78                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  79         mProjectionMap.put(ProviderTableMeta.FILE_ACCOUNT_OWNER,
  80                 ProviderTableMeta.FILE_ACCOUNT_OWNER);
  81     }
  82
  83     private static final int SINGLE_FILE = 1;
  84     private static final int DIRECTORY = 2;
  85     private static final int ROOT_DIRECTORY = 3;
  86     private static final UriMatcher mUriMatcher;
  87     static {
  88         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  89         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "/", ROOT_DIRECTORY);
  90         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  91         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  92         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  93     }
  94
  95     @Override
  96     public int delete(Uri uri, String where, String[] whereArgs) {
  97         SQLiteDatabase db = mDbHelper.getWritableDatabase();
  98         int count = 0;
  99         switch (mUriMatcher.match(uri)) {
 100         case SINGLE_FILE:
 101             count = db.delete(ProviderTableMeta.DB_NAME,
 102                     ProviderTableMeta._ID
 103                             + "="
 104                             + uri.getPathSegments().get(1)
 105                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 106                                     + ")" : ""), whereArgs);
 107             break;
 108         case ROOT_DIRECTORY:
 109             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 110             break;
 111         default:
 112             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 113         }
 114         getContext().getContentResolver().notifyChange(uri, null);
 115         return count;
 116     }
 117
 118     @Override
 119     public String getType(Uri uri) {
 120         switch (mUriMatcher.match(uri)) {
 121         case ROOT_DIRECTORY:
 122             return ProviderTableMeta.CONTENT_TYPE;
 123         case SINGLE_FILE:
 124             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 125         default:
 126             throw new IllegalArgumentException("Unknown Uri id."
 127                     + uri.toString());
 128         }
 129     }
 130
 131     @Override
 132     public Uri insert(Uri uri, ContentValues values) {
 133         if (mUriMatcher.match(uri) != SINGLE_FILE &&
 134             mUriMatcher.match(uri) != ROOT_DIRECTORY) {
 135
 136             throw new IllegalArgumentException("Unknown uri id: " + uri);
 137         }
 138
 139         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 140         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 141         if (rowId > 0) {
 142             Uri insertedFileUri = ContentUris.withAppendedId(
 143                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 144             getContext().getContentResolver().notifyChange(insertedFileUri,
 145                     null);
 146             return insertedFileUri;
 147         }
 148         throw new SQLException("ERROR " + uri);
 149     }
 150
 151     @Override
 152     public boolean onCreate() {
 153         mDbHelper = new DataBaseHelper(getContext());
 154         return true;
 155     }
 156
 157     @Override
 158     public Cursor query(Uri uri, String[] projection, String selection,
 159             String[] selectionArgs, String sortOrder) {
 160         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 161
 162         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 163         sqlQuery.setProjectionMap(mProjectionMap);
 164
 165         switch (mUriMatcher.match(uri)) {
 166         case ROOT_DIRECTORY:
 167             break;
 168         case DIRECTORY:
 169             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 170                     + uri.getPathSegments().get(1));
 171             break;
 172         case SINGLE_FILE:
 173             if (uri.getPathSegments().size() > 1) {
 174                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 175                         + uri.getPathSegments().get(1));
 176             }
 177             break;
 178         default:
 179             throw new IllegalArgumentException("Unknown uri id: " + uri);
 180         }
 181
 182         String order;
 183         if (TextUtils.isEmpty(sortOrder)) {
 184             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 185         } else {
 186             order = sortOrder;
 187         }
 188
 189         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 190         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 191                 null, null, order);
 192
 193         c.setNotificationUri(getContext().getContentResolver(), uri);
 194
 195         return c;
 196     }
 197
 198     @Override
 199     public int update(Uri uri, ContentValues values, String selection,
 200             String[] selectionArgs) {
 201         return mDbHelper.getWritableDatabase().update(
 202                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 203     }
 204
 205     class DataBaseHelper extends SQLiteOpenHelper {
 206
 207         public DataBaseHelper(Context context) {
 208             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 209
 210         }
 211
 212         @Override
 213         public void onCreate(SQLiteDatabase db) {
 214             // files table
 215             Log_OC.i("SQL", "Entering in onCreate");
 216             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 217                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 218                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 219                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 220                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 221                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 222                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 223                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 224                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 225                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 226                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 227                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 228                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER, "
 229                     + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " INTEGER, "
 230                     + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " INTEGER );"
 231                     );
 232         }
 233
 234         @Override
 235         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 236             Log_OC.i("SQL", "Entering in onUpgrade");
 237             boolean upgraded = false;
 238             if (oldVersion == 1 && newVersion >= 2) {
 239                 Log_OC.i("SQL", "Entering in the #1 ADD in onUpgrade");
 240                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 241                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 242                            " DEFAULT 0");
 243                 upgraded = true;
 244             }
 245             if (oldVersion < 3 && newVersion >= 3) {
 246                 Log_OC.i("SQL", "Entering in the #2 ADD in onUpgrade");
 247                 db.beginTransaction();
 248                 try {
 249                     db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 250                                " ADD COLUMN " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA  + " INTEGER " +
 251                                " DEFAULT 0");
 252
 253                     // assume there are not local changes pending to upload
 254                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 255                             " SET " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " = " + System.currentTimeMillis() +
 256                             " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 257
 258                     upgraded = true;
 259                     db.setTransactionSuccessful();
 260                 } finally {
 261                     db.endTransaction();
 262                 }
 263             }
 264             if (oldVersion < 4 && newVersion >= 4) {
 265                 Log_OC.i("SQL", "Entering in the #3 ADD in onUpgrade");
 266                 db.beginTransaction();
 267                 try {
 268                     db .execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 269                            " ADD COLUMN " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA  + " INTEGER " +
 270                            " DEFAULT 0");
 271
 272                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 273                            " SET " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " = " + ProviderTableMeta.FILE_MODIFIED +
 274                            " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 275
 276                     upgraded = true;
 277                     db.setTransactionSuccessful();
 278                 } finally {
 279                     db.endTransaction();
 280                 }
 281             }
 282             if (!upgraded)
 283                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 284         }
 285
 286     }
 287
 288 }