/** {@inheritDoc} */
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
if (LOGV) Log.v(TAG, "delete(uri=" + uri + ")");
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final SelectionBuilder builder = buildSimpleSelection(uri);
int retVal = builder.where(selection, selectionArgs).delete(db);
getContext().getContentResolver().notifyChange(uri, null);
return retVal;
}
@Override
public Cursor query(
Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
if (LOGV) Log.v(TAG, "query(uri=" + uri + ", proj=" + Arrays.toString(projection) + ")");
final SQLiteDatabase db = mOpenHelper.getReadableDatabase();
final int match = sUriMatcher.match(uri);
switch (match) {
default:
{
// Most cases are handled with simple SelectionBuilder
final SelectionBuilder builder = buildExpandedSelection(uri, match);
return builder.where(selection, selectionArgs).query(db, projection, sortOrder);
}
}
}
/**
* Apply the given set of {@link ContentProviderOperation}, executing inside a {@link
* SQLiteDatabase} transaction. All changes will be rolled back if any single one fails.
*/
@Override
public ContentProviderResult[] applyBatch(ArrayList<ContentProviderOperation> operations)
throws OperationApplicationException {
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
db.beginTransaction();
try {
final int numOperations = operations.size();
final ContentProviderResult[] results = new ContentProviderResult[numOperations];
for (int i = 0; i < numOperations; i++) {
results[i] = operations.get(i).apply(this, results, i);
}
db.setTransactionSuccessful();
return results;
} finally {
db.endTransaction();
}
}
@Override
public Uri insert(Uri uri, ContentValues values) {
if (LOGV) Log.v(TAG, "insert(uri=" + uri + ", values=" + values.toString() + ")");
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final int match = sUriMatcher.match(uri);
switch (match) {
case ALBUMS:
{
db.insertOrThrow(Tables.ALBUMS, null, values);
getContext().getContentResolver().notifyChange(uri, null);
return Albums.buildAlbumUri(values.getAsString(Albums.ID));
}
case ARTISTS:
{
db.insertOrThrow(Tables.ARTISTS, null, values);
getContext().getContentResolver().notifyChange(uri, null);
return Artists.buildArtistUri(values.getAsString(Artists.ID));
}
default:
{
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
}
