我有通过执行PreparedStatement插入数据库表中的JDBC代码。当我在内存中的HSQLDB数据库上运行代码时（作为JUnit测试的一部分），我得到一个SQLFeatureNotSupportedException，唯一的信息是消息“功能不受支持”和供应商代码-1500。我正在做的是基本插入表中-
我无法想象最新的HSQLDB不支持此功能。

我的代码：

public Observations saveOrUpdate(final Observations observations)
{
    try
    {
        if (connection == null)
        {
            connection = getJdbcTemplate().getDataSource().getConnection();
        }

        // create the prepared statement
        String sql = "INSERT INTO " + Observations.TABLE_NAME +
                     " (OBS_YEAR, WINTER, SPRING, SUMMER, FALL, ANNUAL, DATA_TYPE, CREATED_DATE, UPDATED_DATE, " +
                     Observations.ID_COLUMN_NAME +
                     ") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
        PreparedStatement preparedStatement = connection.prepareStatement(sql);
        preparedStatement.setInt(1, observations.getYear());
        preparedStatement.setBigDecimal(2, observations.getJan());
        preparedStatement.setBigDecimal(3, observations.getFeb());
        preparedStatement.setBigDecimal(4, observations.getMar());
        preparedStatement.setBigDecimal(5, observations.getApr());
        preparedStatement.setBigDecimal(6, observations.getMay());
        preparedStatement.setString(7, observations.getDataType().toString());
        preparedStatement.setTimestamp(8, new Timestamp(observations.getCreatedDate().getTime()));
        preparedStatement.setTimestamp(9, new Timestamp(observations.getUpdatedDate().getTime()));
        preparedStatement.setLong(10, observations.getId());
        preparedStatement.executeUpdate(sql);

        return observations;
    }
    catch (SQLException ex)
    {
        throw new RuntimeException(ex);
    }
}

谁能说出问题所在或我需要进一步调查的其他事项？在此先感谢您的帮助。