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 as published by
   7  *   the Free Software Foundation, either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 package com.owncloud.android.providers;
  21
  22 import java.util.HashMap;
  23
  24 import com.owncloud.android.Log_OC;
  25 import com.owncloud.android.db.ProviderMeta;
  26 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  27
  28
  29 import android.content.ContentProvider;
  30 import android.content.ContentUris;
  31 import android.content.ContentValues;
  32 import android.content.Context;
  33 import android.content.UriMatcher;
  34 import android.database.Cursor;
  35 import android.database.SQLException;
  36 import android.database.sqlite.SQLiteDatabase;
  37 import android.database.sqlite.SQLiteOpenHelper;
  38 import android.database.sqlite.SQLiteQueryBuilder;
  39 import android.net.Uri;
  40 import android.text.TextUtils;
  41 import android.util.Log;
  42
  43 /**
  44  * The ContentProvider for the ownCloud App.
  45  *
  46  * @author Bartek Przybylski
  47  *
  48  */
  49 public class FileContentProvider extends ContentProvider {
  50
  51     private DataBaseHelper mDbHelper;
  52
  53     private static HashMap<String, String> mProjectionMap;
  54     static {
  55         mProjectionMap = new HashMap<String, String>();
  56         mProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
  57         mProjectionMap.put(ProviderTableMeta.FILE_PARENT,
  58                 ProviderTableMeta.FILE_PARENT);
  59         mProjectionMap.put(ProviderTableMeta.FILE_PATH,
  60                 ProviderTableMeta.FILE_PATH);
  61         mProjectionMap.put(ProviderTableMeta.FILE_NAME,
  62                 ProviderTableMeta.FILE_NAME);
  63         mProjectionMap.put(ProviderTableMeta.FILE_CREATION,
  64                 ProviderTableMeta.FILE_CREATION);
  65         mProjectionMap.put(ProviderTableMeta.FILE_MODIFIED,
  66                 ProviderTableMeta.FILE_MODIFIED);
  67         mProjectionMap.put(ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA,
  68                 ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA);
  69         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_LENGTH,
  70                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  71         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  72                 ProviderTableMeta.FILE_CONTENT_TYPE);
  73         mProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  74                 ProviderTableMeta.FILE_STORAGE_PATH);
  75         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  76                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  77         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA,
  78                 ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA);
  79         mProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  80                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  81         mProjectionMap.put(ProviderTableMeta.FILE_ACCOUNT_OWNER,
  82                 ProviderTableMeta.FILE_ACCOUNT_OWNER);
  83     }
  84
  85     private static final int SINGLE_FILE = 1;
  86     private static final int DIRECTORY = 2;
  87     private static final int ROOT_DIRECTORY = 3;
  88     private static final UriMatcher mUriMatcher;
  89     static {
  90         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  91         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "/", ROOT_DIRECTORY);
  92         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  93         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  94         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  95     }
  96
  97     @Override
  98     public int delete(Uri uri, String where, String[] whereArgs) {
  99         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 100         int count = 0;
 101         switch (mUriMatcher.match(uri)) {
 102         case SINGLE_FILE:
 103             count = db.delete(ProviderTableMeta.DB_NAME,
 104                     ProviderTableMeta._ID
 105                             + "="
 106                             + uri.getPathSegments().get(1)
 107                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 108                                     + ")" : ""), whereArgs);
 109             break;
 110         case ROOT_DIRECTORY:
 111             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 112             break;
 113         default:
 114             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 115         }
 116         getContext().getContentResolver().notifyChange(uri, null);
 117         return count;
 118     }
 119
 120     @Override
 121     public String getType(Uri uri) {
 122         switch (mUriMatcher.match(uri)) {
 123         case ROOT_DIRECTORY:
 124             return ProviderTableMeta.CONTENT_TYPE;
 125         case SINGLE_FILE:
 126             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 127         default:
 128             throw new IllegalArgumentException("Unknown Uri id."
 129                     + uri.toString());
 130         }
 131     }
 132
 133     @Override
 134     public Uri insert(Uri uri, ContentValues values) {
 135         if (mUriMatcher.match(uri) != SINGLE_FILE &&
 136             mUriMatcher.match(uri) != ROOT_DIRECTORY) {
 137
 138             throw new IllegalArgumentException("Unknown uri id: " + uri);
 139         }
 140
 141         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 142         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 143         if (rowId > 0) {
 144             Uri insertedFileUri = ContentUris.withAppendedId(
 145                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 146             getContext().getContentResolver().notifyChange(insertedFileUri,
 147                     null);
 148             return insertedFileUri;
 149         }
 150         throw new SQLException("ERROR " + uri);
 151     }
 152
 153     @Override
 154     public boolean onCreate() {
 155         mDbHelper = new DataBaseHelper(getContext());
 156         return true;
 157     }
 158
 159     @Override
 160     public Cursor query(Uri uri, String[] projection, String selection,
 161             String[] selectionArgs, String sortOrder) {
 162         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 163
 164         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 165         sqlQuery.setProjectionMap(mProjectionMap);
 166
 167         switch (mUriMatcher.match(uri)) {
 168         case ROOT_DIRECTORY:
 169             break;
 170         case DIRECTORY:
 171             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 172                     + uri.getPathSegments().get(1));
 173             break;
 174         case SINGLE_FILE:
 175             if (uri.getPathSegments().size() > 1) {
 176                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 177                         + uri.getPathSegments().get(1));
 178             }
 179             break;
 180         default:
 181             throw new IllegalArgumentException("Unknown uri id: " + uri);
 182         }
 183
 184         String order;
 185         if (TextUtils.isEmpty(sortOrder)) {
 186             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 187         } else {
 188             order = sortOrder;
 189         }
 190
 191         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 192         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 193                 null, null, order);
 194
 195         c.setNotificationUri(getContext().getContentResolver(), uri);
 196
 197         return c;
 198     }
 199
 200     @Override
 201     public int update(Uri uri, ContentValues values, String selection,
 202             String[] selectionArgs) {
 203         return mDbHelper.getWritableDatabase().update(
 204                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 205     }
 206
 207     class DataBaseHelper extends SQLiteOpenHelper {
 208
 209         public DataBaseHelper(Context context) {
 210             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 211
 212         }
 213
 214         @Override
 215         public void onCreate(SQLiteDatabase db) {
 216             // files table
 217             Log_OC.i("SQL", "Entering in onCreate");
 218             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 219                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 220                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 221                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 222                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 223                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 224                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 225                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 226                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 227                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 228                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 229                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 230                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER, "
 231                     + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " INTEGER, "
 232                     + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " INTEGER );"
 233                     );
 234         }
 235
 236         @Override
 237         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 238             Log_OC.i("SQL", "Entering in onUpgrade");
 239             boolean upgraded = false;
 240             if (oldVersion == 1 && newVersion >= 2) {
 241                 Log_OC.i("SQL", "Entering in the #1 ADD in onUpgrade");
 242                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 243                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 244                            " DEFAULT 0");
 245                 upgraded = true;
 246             }
 247             if (oldVersion < 3 && newVersion >= 3) {
 248                 Log_OC.i("SQL", "Entering in the #2 ADD in onUpgrade");
 249                 db.beginTransaction();
 250                 try {
 251                     db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 252                                " ADD COLUMN " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA  + " INTEGER " +
 253                                " DEFAULT 0");
 254
 255                     // assume there are not local changes pending to upload
 256                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 257                             " SET " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " = " + System.currentTimeMillis() +
 258                             " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 259
 260                     upgraded = true;
 261                     db.setTransactionSuccessful();
 262                 } finally {
 263                     db.endTransaction();
 264                 }
 265             }
 266             if (oldVersion < 4 && newVersion >= 4) {
 267                 Log_OC.i("SQL", "Entering in the #3 ADD in onUpgrade");
 268                 db.beginTransaction();
 269                 try {
 270                     db .execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 271                            " ADD COLUMN " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA  + " INTEGER " +
 272                            " DEFAULT 0");
 273
 274                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 275                            " SET " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " = " + ProviderTableMeta.FILE_MODIFIED +
 276                            " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 277
 278                     upgraded = true;
 279                     db.setTransactionSuccessful();
 280                 } finally {
 281                     db.endTransaction();
 282                 }
 283             }
 284             if (!upgraded)
 285                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 286         }
 287
 288     }
 289
 290 }