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/**
* Convenience method for updating rows in the database.
*
* @param table the table to update in
* @param values a map from column names to new column values. null is a
* valid value that will be translated to NULL.
* @param whereClause the optional WHERE clause to apply when updating.
* Passing null will update all rows.
* @return the number of rows affected
*/
public int update(String table, ContentValues values, String whereClause, String[] whereArgs) {
return updateWithOnConflict(table, values, whereClause, whereArgs, null);
}