public static int executeBlob(String query, byte[] bytes){
        try
        {
          PreparedStatement stmt = getConnection().prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
          Blob blob = getConnection().createBlob();
          blob.setBytes(1, bytes);
          stmt.setBlob(1, blob);
          stmt.executeUpdate();
          ResultSet result = stmt.getGeneratedKeys();
          result.next();
          return result.getInt(1);
        }
        catch (SQLException e)
        {
          e.printStackTrace();
        }
        return 0;
    }