protected int executeInsert(String query, ResultSetCallable callable, Column<?>...columns)
	{
		int affectedRows = 0;

		// Automatic resource management for handling/closing objects.
		try (
				Connection connection = getConnection();
				PreparedStatement preparedStatement = connection.prepareStatement(query, Statement.RETURN_GENERATED_KEYS)
			)
		{
			for (int i=0; i < columns.length; i++)
			{
				columns[i].setValue(preparedStatement, i+1);
			}

			affectedRows = preparedStatement.executeUpdate();

			if (callable != null)
			{
				callable.processResultSet(preparedStatement.getGeneratedKeys());
			}
		}
		catch (SQLException exception)
		{
			exception.printStackTrace();
		}
		catch (Exception exception)
		{
			exception.printStackTrace();
		}

		return affectedRows;
	}