src/eu/alefzero/owncloud/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 eu.alefzero.owncloud.providers;
  20
  21 import java.util.HashMap;
  22
  23 import eu.alefzero.owncloud.db.ProviderMeta;
  24 import eu.alefzero.owncloud.db.ProviderMeta.ProviderTableMeta;
  25
  26 import android.content.ContentProvider;
  27 import android.content.ContentUris;
  28 import android.content.ContentValues;
  29 import android.content.Context;
  30 import android.content.UriMatcher;
  31 import android.database.Cursor;
  32 import android.database.SQLException;
  33 import android.database.sqlite.SQLiteDatabase;
  34 import android.database.sqlite.SQLiteOpenHelper;
  35 import android.database.sqlite.SQLiteQueryBuilder;
  36 import android.net.Uri;
  37 import android.text.TextUtils;
  38 import android.util.Log;
  39
  40 /**
  41  * The ContentProvider for the ownCloud App.
  42  *
  43  * @author Bartek Przybylski
  44  *
  45  */
  46 public class FileContentProvider extends ContentProvider {
  47
  48     private DataBaseHelper mDbHelper;
  49
  50     private static HashMap<String, String> mProjectionMap;
  51     static {
  52         mProjectionMap = new HashMap<String, String>();
  53         mProjectionMap.put(ProviderTableMeta._ID, ProviderTableMeta._ID);
  54         mProjectionMap.put(ProviderTableMeta.FILE_PARENT,
  55                 ProviderTableMeta.FILE_PARENT);
  56         mProjectionMap.put(ProviderTableMeta.FILE_PATH,
  57                 ProviderTableMeta.FILE_PATH);
  58         mProjectionMap.put(ProviderTableMeta.FILE_NAME,
  59                 ProviderTableMeta.FILE_NAME);
  60         mProjectionMap.put(ProviderTableMeta.FILE_CREATION,
  61                 ProviderTableMeta.FILE_CREATION);
  62         mProjectionMap.put(ProviderTableMeta.FILE_MODIFIED,
  63                 ProviderTableMeta.FILE_MODIFIED);
  64         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_LENGTH,
  65                 ProviderTableMeta.FILE_CONTENT_LENGTH);
  66         mProjectionMap.put(ProviderTableMeta.FILE_CONTENT_TYPE,
  67                 ProviderTableMeta.FILE_CONTENT_TYPE);
  68         mProjectionMap.put(ProviderTableMeta.FILE_STORAGE_PATH,
  69                 ProviderTableMeta.FILE_STORAGE_PATH);
  70         mProjectionMap.put(ProviderTableMeta.FILE_LAST_SYNC_DATE,
  71                 ProviderTableMeta.FILE_LAST_SYNC_DATE);
  72         mProjectionMap.put(ProviderTableMeta.FILE_KEEP_IN_SYNC,
  73                 ProviderTableMeta.FILE_KEEP_IN_SYNC);
  74     }
  75
  76     private static final int SINGLE_FILE = 1;
  77     private static final int DIRECTORY = 2;
  78     private static final int ROOT_DIRECTORY = 3;
  79     private static final UriMatcher mUriMatcher;
  80     static {
  81         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  82         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "/", ROOT_DIRECTORY);
  83         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  84         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  85         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  86     }
  87
  88     @Override
  89     public int delete(Uri uri, String where, String[] whereArgs) {
  90         SQLiteDatabase db = mDbHelper.getWritableDatabase();
  91         int count = 0;
  92         switch (mUriMatcher.match(uri)) {
  93         case SINGLE_FILE:
  94             count = db.delete(ProviderTableMeta.DB_NAME,
  95                     ProviderTableMeta._ID
  96                             + "="
  97                             + uri.getPathSegments().get(1)
  98                             + (!TextUtils.isEmpty(where) ? " AND (" + where
  99                                     + ")" : ""), whereArgs);
 100             break;
 101         case ROOT_DIRECTORY:
 102             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 103             break;
 104         default:
 105             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 106         }
 107         getContext().getContentResolver().notifyChange(uri, null);
 108         return count;
 109     }
 110
 111     @Override
 112     public String getType(Uri uri) {
 113         switch (mUriMatcher.match(uri)) {
 114         case ROOT_DIRECTORY:
 115             return ProviderTableMeta.CONTENT_TYPE;
 116         case SINGLE_FILE:
 117             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 118         default:
 119             throw new IllegalArgumentException("Unknown Uri id."
 120                     + uri.toString());
 121         }
 122     }
 123
 124     @Override
 125     public Uri insert(Uri uri, ContentValues values) {
 126         if (mUriMatcher.match(uri) != SINGLE_FILE) {
 127             throw new IllegalArgumentException("Unknown uri id: " + uri);
 128         }
 129
 130         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 131         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 132         if (rowId > 0) {
 133             Uri insertedFileUri = ContentUris.withAppendedId(
 134                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 135             getContext().getContentResolver().notifyChange(insertedFileUri,
 136                     null);
 137             return insertedFileUri;
 138         }
 139         throw new SQLException("ERROR " + uri);
 140     }
 141
 142     @Override
 143     public boolean onCreate() {
 144         mDbHelper = new DataBaseHelper(getContext());
 145         return true;
 146     }
 147
 148     @Override
 149     public Cursor query(Uri uri, String[] projection, String selection,
 150             String[] selectionArgs, String sortOrder) {
 151         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 152
 153         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 154         sqlQuery.setProjectionMap(mProjectionMap);
 155
 156         switch (mUriMatcher.match(uri)) {
 157         case ROOT_DIRECTORY:
 158             break;
 159         case DIRECTORY:
 160             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 161                     + uri.getPathSegments().get(1));
 162             break;
 163         case SINGLE_FILE:
 164             if (uri.getPathSegments().size() > 1) {
 165                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 166                         + uri.getPathSegments().get(1));
 167             }
 168             break;
 169         default:
 170             throw new IllegalArgumentException("Unknown uri id: " + uri);
 171         }
 172
 173         String order;
 174         if (TextUtils.isEmpty(sortOrder)) {
 175             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 176         } else {
 177             order = sortOrder;
 178         }
 179
 180         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 181         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 182                 null, null, order);
 183
 184         c.setNotificationUri(getContext().getContentResolver(), uri);
 185
 186         return c;
 187     }
 188
 189     @Override
 190     public int update(Uri uri, ContentValues values, String selection,
 191             String[] selectionArgs) {
 192         return mDbHelper.getWritableDatabase().update(
 193                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 194     }
 195
 196     class DataBaseHelper extends SQLiteOpenHelper {
 197
 198         public DataBaseHelper(Context context) {
 199             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 200
 201         }
 202
 203         @Override
 204         public void onCreate(SQLiteDatabase db) {
 205             // files table
 206             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 207                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 208                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 209                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 210                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 211                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 212                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 213                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 214                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 215                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 216                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 217                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER "
 218                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER );");
 219         }
 220
 221         @Override
 222         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 223             if (oldVersion == 1 && newVersion >= 2) {
 224                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 225                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 226                            " DEFAULT 0");
 227             }
 228         }
 229
 230     }
 231
 232 }