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

Here an example for bulkInsert:

/**
 * Perform bulkInsert with use of transaction
 */
@Override
public int bulkInsert(Uri uri, ContentValues[] values) {
    int uriType = 0;
    int insertCount = 0;
    try {

        uriType = sURIMatcher.match(uri);
        SQLiteDatabase sqlDB = dbHelper.getWritableDatabase();

        switch (uriType) {
        case MEASUREMENTS:
            try {
                sqlDB.beginTransaction();
                for (ContentValues value : values) {
                    long id = sqlDB.insert(Tab_Measurements.TABLE_NAME, null, value);
                    if (id > 0)
                        insertCount++;
                }
                sqlDB.setTransactionSuccessful();
            } catch (Exception e) {
                // Your error handling
            } finally {
                sqlDB.endTransaction();
            }
            break;
        default:
            throw new IllegalArgumentException("Unknown URI: " + uri);
        }
        // getContext().getContentResolver().notifyChange(uri, null);
    } catch (Exception e) {
      // Your error handling
    }

    return insertCount;
}

And in your code something like:

/**
 * Inserts new measurement information.
 * 
 * @param ArrayList of measurements
 * @return number of inserted entries
 */
public static long bulkInsertEntries(ArrayList readings) {
    // insert only if data is set correctly
    if (readings.size() == 0)
        return 0;

    long insertCount = 0;
    try {
        // insert new entries

        // ArrayList valueList = new ArrayList();
        ContentValues[] valueList = new ContentValues[readings.size()];
        int i = 0;
        for (Item_Measurement reading : readings) {
            ContentValues values = new ContentValues();
            values.put(COL_TIME_READING, reading.getTimeReading());
                            // ...
            valueList[i++] = values;
        }

        // returns ID
        insertCount = ContentProviderOwn.getAppContext().getContentResolver()
                .bulkInsert(ContentProviderOwn.MEASUREMENTS_URI_BASE, valueList);

    } catch (Exception e) {
        // Your error handling
    }
    return insertCount;
}