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.R;
  25 import com.owncloud.android.db.ProviderMeta;
  26 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  27
  28
  29
  30 import android.content.ContentProvider;
  31 import android.content.ContentUris;
  32 import android.content.ContentValues;
  33 import android.content.Context;
  34 import android.content.UriMatcher;
  35 import android.database.Cursor;
  36 import android.database.SQLException;
  37 import android.database.sqlite.SQLiteDatabase;
  38 import android.database.sqlite.SQLiteOpenHelper;
  39 import android.database.sqlite.SQLiteQueryBuilder;
  40 import android.net.Uri;
  41 import android.text.TextUtils;
  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
  89     private UriMatcher mUriMatcher;
  90 //    static {
  91 //        mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  92 //        mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, null, ROOT_DIRECTORY);
  93 //        mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  94 //        mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  95 //        mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  96 //    }
  97
  98
  99     @Override
 100     public int delete(Uri uri, String where, String[] whereArgs) {
 101         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 102         int count = 0;
 103         switch (mUriMatcher.match(uri)) {
 104         case SINGLE_FILE:
 105             count = db.delete(ProviderTableMeta.DB_NAME,
 106                     ProviderTableMeta._ID
 107                             + "="
 108                             + uri.getPathSegments().get(1)
 109                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 110                                     + ")" : ""), whereArgs);
 111             break;
 112         case ROOT_DIRECTORY:
 113             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 114             break;
 115         default:
 116             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 117         }
 118         getContext().getContentResolver().notifyChange(uri, null);
 119         return count;
 120     }
 121
 122     @Override
 123     public String getType(Uri uri) {
 124         switch (mUriMatcher.match(uri)) {
 125         case ROOT_DIRECTORY:
 126             return ProviderTableMeta.CONTENT_TYPE;
 127         case SINGLE_FILE:
 128             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 129         default:
 130             throw new IllegalArgumentException("Unknown Uri id."
 131                     + uri.toString());
 132         }
 133     }
 134
 135     @Override
 136     public Uri insert(Uri uri, ContentValues values) {
 137         if (mUriMatcher.match(uri) != SINGLE_FILE &&
 138             mUriMatcher.match(uri) != ROOT_DIRECTORY) {
 139
 140             throw new IllegalArgumentException("Unknown uri id: " + uri);
 141         }
 142
 143         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 144         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 145         if (rowId > 0) {
 146             Uri insertedFileUri = ContentUris.withAppendedId(
 147                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 148             getContext().getContentResolver().notifyChange(insertedFileUri,
 149                     null);
 150             return insertedFileUri;
 151         }
 152         throw new SQLException("ERROR " + uri);
 153     }
 154
 155     @Override
 156     public boolean onCreate() {
 157         mDbHelper = new DataBaseHelper(getContext());
 158
 159         String authority = getContext().getResources().getString(R.string.authority);
 160         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
 161         mUriMatcher.addURI(authority, null, ROOT_DIRECTORY);
 162         mUriMatcher.addURI(authority, "file/", SINGLE_FILE);
 163         mUriMatcher.addURI(authority, "file/#", SINGLE_FILE);
 164         mUriMatcher.addURI(authority, "dir/#", DIRECTORY);
 165
 166         return true;
 167     }
 168
 169     @Override
 170     public Cursor query(Uri uri, String[] projection, String selection,
 171             String[] selectionArgs, String sortOrder) {
 172         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 173
 174         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 175         sqlQuery.setProjectionMap(mProjectionMap);
 176
 177         switch (mUriMatcher.match(uri)) {
 178         case ROOT_DIRECTORY:
 179             break;
 180         case DIRECTORY:
 181             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 182                     + uri.getPathSegments().get(1));
 183             break;
 184         case SINGLE_FILE:
 185             if (uri.getPathSegments().size() > 1) {
 186                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 187                         + uri.getPathSegments().get(1));
 188             }
 189             break;
 190         default:
 191             throw new IllegalArgumentException("Unknown uri id: " + uri);
 192         }
 193
 194         String order;
 195         if (TextUtils.isEmpty(sortOrder)) {
 196             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 197         } else {
 198             order = sortOrder;
 199         }
 200
 201         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 202         // DB case_sensitive
 203         db.execSQL("PRAGMA case_sensitive_like = true");
 204         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 205                 null, null, order);
 206
 207         c.setNotificationUri(getContext().getContentResolver(), uri);
 208
 209         return c;
 210     }
 211
 212     @Override
 213     public int update(Uri uri, ContentValues values, String selection,
 214             String[] selectionArgs) {
 215         return mDbHelper.getWritableDatabase().update(
 216                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 217     }
 218
 219     class DataBaseHelper extends SQLiteOpenHelper {
 220
 221         public DataBaseHelper(Context context) {
 222             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 223
 224         }
 225
 226         @Override
 227         public void onCreate(SQLiteDatabase db) {
 228             // files table
 229             Log_OC.i("SQL", "Entering in onCreate");
 230             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 231                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 232                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 233                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 234                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 235                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 236                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 237                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 238                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 239                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 240                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 241                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 242                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER, "
 243                     + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " INTEGER, "
 244                     + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " INTEGER );"
 245                     );
 246         }
 247
 248         @Override
 249         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 250             Log_OC.i("SQL", "Entering in onUpgrade");
 251             boolean upgraded = false;
 252             if (oldVersion == 1 && newVersion >= 2) {
 253                 Log_OC.i("SQL", "Entering in the #1 ADD in onUpgrade");
 254                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 255                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 256                            " DEFAULT 0");
 257                 upgraded = true;
 258             }
 259             if (oldVersion < 3 && newVersion >= 3) {
 260                 Log_OC.i("SQL", "Entering in the #2 ADD in onUpgrade");
 261                 db.beginTransaction();
 262                 try {
 263                     db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 264                                " ADD COLUMN " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA  + " INTEGER " +
 265                                " DEFAULT 0");
 266
 267                     // assume there are not local changes pending to upload
 268                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 269                             " SET " + ProviderTableMeta.FILE_LAST_SYNC_DATE_FOR_DATA + " = " + System.currentTimeMillis() +
 270                             " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 271
 272                     upgraded = true;
 273                     db.setTransactionSuccessful();
 274                 } finally {
 275                     db.endTransaction();
 276                 }
 277             }
 278             if (oldVersion < 4 && newVersion >= 4) {
 279                 Log_OC.i("SQL", "Entering in the #3 ADD in onUpgrade");
 280                 db.beginTransaction();
 281                 try {
 282                     db .execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 283                            " ADD COLUMN " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA  + " INTEGER " +
 284                            " DEFAULT 0");
 285
 286                     db.execSQL("UPDATE " + ProviderTableMeta.DB_NAME +
 287                            " SET " + ProviderTableMeta.FILE_MODIFIED_AT_LAST_SYNC_FOR_DATA + " = " + ProviderTableMeta.FILE_MODIFIED +
 288                            " WHERE " + ProviderTableMeta.FILE_STORAGE_PATH + " IS NOT NULL");
 289
 290                     upgraded = true;
 291                     db.setTransactionSuccessful();
 292                 } finally {
 293                     db.endTransaction();
 294                 }
 295             }
 296             if (!upgraded)
 297                 Log_OC.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 298         }
 299
 300     }
 301
 302 }