Multiple rows insert with ContentProvider

Question

I need to make insert of few rows in one transaction. Can I do it with ContentProvider?

Answer 1

I also use replace mode for insert row - db.insertWithOnConflict(EVENT_TABLE_NAME, null, value, SQLiteDatabase.CONFLICT_REPLACE); Its will rid of conflict if record is exist already

In DatabaseHelper add UNIQUE INDEX

    public class DataProvider extends ContentProvider {

    private static class DatabaseHelper extends SQLiteOpenHelper {
        DatabaseHelper(Context context){
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db){
            db.execSQL(CREATE_EVENT_TABLE);
            db.execSQL("CREATE UNIQUE INDEX event_idx ON " + EVENT_TABLE_NAME + " ( " + EventTable.EVENT_ID + " )");
// ...

        ...
        @Override
        public int bulkInsert(Uri uri, ContentValues[] values) {
            Log.i(TAG, "bulkInsert");
            if (values.length == 0)
                return 0;
            int insertCount = 0;
            try {
                switch (uriMatcher.match(uri)) {
                    case EVENT_LIST:
                        try {
                            db.beginTransaction();
                            for (ContentValues value : values) {
                                long id = db.insertWithOnConflict(EVENT_TABLE_NAME, null, value, SQLiteDatabase.CONFLICT_REPLACE);
                                if (id > 0)
                                    insertCount++;
                            }
                            db.setTransactionSuccessful();
                        } catch (Exception e) {
                            // Your error handling
                        } finally {
                            db.endTransaction();
                        }
                        break;
                    default:
                        throw new IllegalArgumentException("Unknown URI " + uri);
                }
                getContext().getContentResolver().notifyChange(uri, null);
            } catch (Exception e) {
                Log.i(TAG, "Exception : " + e);
            }
            return insertCount;
        }

And call bulkInsert like this:

            ContentValues[] cvArr = new ContentValues[eventList.size()];
            long insertCount = 0;
            int i = 0;
            for (Event event : eventList) {
                ContentValues cv = new ContentValues();
                cv.put(DataProvider.EventTable.EVENT_ID, event.id);
                cv.put(DataProvider.EventTable.SENSOR_ID, event.sensor_id);
                cv.put(DataProvider.EventTable.TIMESTAMP, event.time);
                cvArr[i++] = cv;
            }
            // returns ID
            insertCount = context.getContentResolver()
                    .bulkInsert(DataProvider.CONTENT_EVENT_LIST, cvArr);