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         mProjectionMap.put(ProviderTableMeta.FILE_ACCOUNT_OWNER,
  76                 ProviderTableMeta.FILE_ACCOUNT_OWNER);
  77     }
  78
  79     private static final int SINGLE_FILE = 1;
  80     private static final int DIRECTORY = 2;
  81     private static final int ROOT_DIRECTORY = 3;
  82     private static final UriMatcher mUriMatcher;
  83     static {
  84         mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
  85         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "/", ROOT_DIRECTORY);
  86         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/", SINGLE_FILE);
  87         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "file/#", SINGLE_FILE);
  88         mUriMatcher.addURI(ProviderMeta.AUTHORITY_FILES, "dir/#", DIRECTORY);
  89     }
  90
  91     @Override
  92     public int delete(Uri uri, String where, String[] whereArgs) {
  93         SQLiteDatabase db = mDbHelper.getWritableDatabase();
  94         int count = 0;
  95         switch (mUriMatcher.match(uri)) {
  96         case SINGLE_FILE:
  97             count = db.delete(ProviderTableMeta.DB_NAME,
  98                     ProviderTableMeta._ID
  99                             + "="
 100                             + uri.getPathSegments().get(1)
 101                             + (!TextUtils.isEmpty(where) ? " AND (" + where
 102                                     + ")" : ""), whereArgs);
 103             break;
 104         case ROOT_DIRECTORY:
 105             count = db.delete(ProviderTableMeta.DB_NAME, where, whereArgs);
 106             break;
 107         default:
 108             throw new IllegalArgumentException("Unknown uri: " + uri.toString());
 109         }
 110         getContext().getContentResolver().notifyChange(uri, null);
 111         return count;
 112     }
 113
 114     @Override
 115     public String getType(Uri uri) {
 116         switch (mUriMatcher.match(uri)) {
 117         case ROOT_DIRECTORY:
 118             return ProviderTableMeta.CONTENT_TYPE;
 119         case SINGLE_FILE:
 120             return ProviderTableMeta.CONTENT_TYPE_ITEM;
 121         default:
 122             throw new IllegalArgumentException("Unknown Uri id."
 123                     + uri.toString());
 124         }
 125     }
 126
 127     @Override
 128     public Uri insert(Uri uri, ContentValues values) {
 129         if (mUriMatcher.match(uri) != SINGLE_FILE &&
 130             mUriMatcher.match(uri) != ROOT_DIRECTORY) {
 131
 132             throw new IllegalArgumentException("Unknown uri id: " + uri);
 133         }
 134
 135         SQLiteDatabase db = mDbHelper.getWritableDatabase();
 136         long rowId = db.insert(ProviderTableMeta.DB_NAME, null, values);
 137         if (rowId > 0) {
 138             Uri insertedFileUri = ContentUris.withAppendedId(
 139                     ProviderTableMeta.CONTENT_URI_FILE, rowId);
 140             getContext().getContentResolver().notifyChange(insertedFileUri,
 141                     null);
 142             return insertedFileUri;
 143         }
 144         throw new SQLException("ERROR " + uri);
 145     }
 146
 147     @Override
 148     public boolean onCreate() {
 149         mDbHelper = new DataBaseHelper(getContext());
 150         return true;
 151     }
 152
 153     @Override
 154     public Cursor query(Uri uri, String[] projection, String selection,
 155             String[] selectionArgs, String sortOrder) {
 156         SQLiteQueryBuilder sqlQuery = new SQLiteQueryBuilder();
 157
 158         sqlQuery.setTables(ProviderTableMeta.DB_NAME);
 159         sqlQuery.setProjectionMap(mProjectionMap);
 160
 161         switch (mUriMatcher.match(uri)) {
 162         case ROOT_DIRECTORY:
 163             break;
 164         case DIRECTORY:
 165             sqlQuery.appendWhere(ProviderTableMeta.FILE_PARENT + "="
 166                     + uri.getPathSegments().get(1));
 167             break;
 168         case SINGLE_FILE:
 169             if (uri.getPathSegments().size() > 1) {
 170                 sqlQuery.appendWhere(ProviderTableMeta._ID + "="
 171                         + uri.getPathSegments().get(1));
 172             }
 173             break;
 174         default:
 175             throw new IllegalArgumentException("Unknown uri id: " + uri);
 176         }
 177
 178         String order;
 179         if (TextUtils.isEmpty(sortOrder)) {
 180             order = ProviderTableMeta.DEFAULT_SORT_ORDER;
 181         } else {
 182             order = sortOrder;
 183         }
 184
 185         SQLiteDatabase db = mDbHelper.getReadableDatabase();
 186         Cursor c = sqlQuery.query(db, projection, selection, selectionArgs,
 187                 null, null, order);
 188
 189         c.setNotificationUri(getContext().getContentResolver(), uri);
 190
 191         return c;
 192     }
 193
 194     @Override
 195     public int update(Uri uri, ContentValues values, String selection,
 196             String[] selectionArgs) {
 197         return mDbHelper.getWritableDatabase().update(
 198                 ProviderTableMeta.DB_NAME, values, selection, selectionArgs);
 199     }
 200
 201     class DataBaseHelper extends SQLiteOpenHelper {
 202
 203         public DataBaseHelper(Context context) {
 204             super(context, ProviderMeta.DB_NAME, null, ProviderMeta.DB_VERSION);
 205
 206         }
 207
 208         @Override
 209         public void onCreate(SQLiteDatabase db) {
 210             // files table
 211             Log.i("SQL", "Entering in onCreate");
 212             db.execSQL("CREATE TABLE " + ProviderTableMeta.DB_NAME + "("
 213                     + ProviderTableMeta._ID + " INTEGER PRIMARY KEY, "
 214                     + ProviderTableMeta.FILE_NAME + " TEXT, "
 215                     + ProviderTableMeta.FILE_PATH + " TEXT, "
 216                     + ProviderTableMeta.FILE_PARENT + " INTEGER, "
 217                     + ProviderTableMeta.FILE_CREATION + " INTEGER, "
 218                     + ProviderTableMeta.FILE_MODIFIED + " INTEGER, "
 219                     + ProviderTableMeta.FILE_CONTENT_TYPE + " TEXT, "
 220                     + ProviderTableMeta.FILE_CONTENT_LENGTH + " INTEGER, "
 221                     + ProviderTableMeta.FILE_STORAGE_PATH + " TEXT, "
 222                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + " TEXT, "
 223                     + ProviderTableMeta.FILE_LAST_SYNC_DATE + " INTEGER, "
 224                     + ProviderTableMeta.FILE_KEEP_IN_SYNC + " INTEGER );");
 225         }
 226
 227         @Override
 228         public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
 229             Log.i("SQL", "Entering in onUpgrade");
 230             if (oldVersion == 1 && newVersion >= 2) {
 231                 Log.i("SQL", "Entering in the ADD in onUpgrade");
 232                 db.execSQL("ALTER TABLE " + ProviderTableMeta.DB_NAME +
 233                            " ADD COLUMN " + ProviderTableMeta.FILE_KEEP_IN_SYNC  + " INTEGER " +
 234                            " DEFAULT 0");
 235             } else Log.i("SQL", "OUT of the ADD in onUpgrade; oldVersion == " + oldVersion + ", newVersion == " + newVersion);
 236         }
 237
 238     }
 239
 240 }