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