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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   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.db.ProviderMeta;
  24 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  25
  26
  27 import android.content.ContentProvider;
  28 import android.content.ContentUris;
  29 import android.content.ContentValues;
  30 import android.content.Context;
  31 import android.content.UriMatcher;
  32 import android.database.Cursor;
  33 import android.database.SQLException;
  34 import android.database.sqlite.SQLiteDatabase;
  35 import android.database.sqlite.SQLiteOpenHelper;
  36 import android.database.sqlite.SQLiteQueryBuilder;
  37 import android.net.Uri;
  38 import android.text.TextUtils;
  39 import android.util.Log;
  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_CONTENT_LENGTH,
  66                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  67         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  68                 ProviderTableMeta.FILE_CONTENT_TYPE);
  69         mProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  70                 ProviderTableMeta.FILE_STORAGE_PATH);
  71         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  72                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  73         mProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  74                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  75     }
  76
  77     private static final int SINGLE_FILE = 1;
  78     private static final int DIRECTORY = 2;
  79     private static final int ROOT_DIRECTORY = 3;
  80     private static final UriMatcher mUriMatcher;
  81     static {
  82         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  83         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "/", ROOT_DIRECTORY);
  84         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  85         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  86         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  87     }
  88
  89     @Override
  90     public int delete(Uri uri, String where, String[] whereArgs) {
  91         SQLiteDatabase db = mDbHelper.getWritableDatabase();
  92         int count = 0;
  93         switch (mUriMatcher.match(uri)) {
  94         case SINGLE_FILE:
  95             count = db.delete(ProviderTableMeta.DB_NAME,
  96                     ProviderTableMeta._ID
  97                             + "="
  98                             + uri.getPathSegments().get(1)
  99                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 100                                     + ")" : ""), whereArgs);
 101             break;
 102         case ROOT_DIRECTORY:
 103             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 104             break;
 105         default:
 106             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 107         }
 108         getContext().getContentResolver().notifyChange(uri, null);
 109         return count;
 110     }
 111
 112     @Override
 113     public String getType(Uri uri) {
 114         switch (mUriMatcher.match(uri)) {
 115         case ROOT_DIRECTORY:
 116             return ProviderTableMeta.CONTENT_TYPE;
 117         case SINGLE_FILE:
 118             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 119         default:
 120             throw new IllegalArgumentException("Unknown Uri id."
 121                     + uri.toString());
 122         }
 123     }
 124
 125     @Override
 126     public Uri insert(Uri uri, ContentValues values) {
 127         if (mUriMatcher.match(uri) != SINGLE_FILE &&
 128             mUriMatcher.match(uri) != ROOT_DIRECTORY) {
 129
 130             throw new IllegalArgumentException("Unknown uri id: " + uri);
 131         }
 132
 133         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 134         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 135         if (rowId > 0) {
 136             Uri insertedFileUri = ContentUris.withAppendedId(
 137                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 138             getContext().getContentResolver().notifyChange(insertedFileUri,
 139                     null);
 140             return insertedFileUri;
 141         }
 142         throw new SQLException("ERROR " + uri);
 143     }
 144
 145     @Override
 146     public boolean onCreate() {
 147         mDbHelper = new DataBaseHelper(getContext());
 148         return true;
 149     }
 150
 151     @Override
 152     public Cursor query(Uri uri, String[] projection, String selection,
 153             String[] selectionArgs, String sortOrder) {
 154         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 155
 156         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 157         sqlQuery.setProjectionMap(mProjectionMap);
 158
 159         switch (mUriMatcher.match(uri)) {
 160         case ROOT_DIRECTORY:
 161             break;
 162         case DIRECTORY:
 163             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 164                     + uri.getPathSegments().get(1));
 165             break;
 166         case SINGLE_FILE:
 167             if (uri.getPathSegments().size() > 1) {
 168                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 169                         + uri.getPathSegments().get(1));
 170             }
 171             break;
 172         default:
 173             throw new IllegalArgumentException("Unknown uri id: " + uri);
 174         }
 175
 176         String order;
 177         if (TextUtils.isEmpty(sortOrder)) {
 178             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 179         } else {
 180             order = sortOrder;
 181         }
 182
 183         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 184         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 185                 null, null, order);
 186
 187         c.setNotificationUri(getContext().getContentResolver(), uri);
 188
 189         return c;
 190     }
 191
 192     @Override
 193     public int update(Uri uri, ContentValues values, String selection,
 194             String[] selectionArgs) {
 195         return mDbHelper.getWritableDatabase().update(
 196                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 197     }
 198
 199     class DataBaseHelper extends SQLiteOpenHelper {
 200
 201         public DataBaseHelper(Context context) {
 202             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 203
 204         }
 205
 206         @Override
 207         public void onCreate(SQLiteDatabase db) {
 208             // files table
 209             Log.i("SQL", "Entering in onCreate");
 210             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 211                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 212                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 213                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 214                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 215                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 216                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 217                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 218                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 219                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 220                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 221                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 222                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER );");
 223         }
 224
 225         @Override
 226         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 227             Log.i("SQL", "Entering in onUpgrade");
 228             if (oldVersion == 1 && newVersion >= 2) {
 229                 Log.i("SQL", "Entering in the ADD in onUpgrade");
 230                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 231                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 232                            " DEFAULT 0");
 233             } else Log.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 234         }
 235
 236     }
 237
 238 }