Re: Support double quotation in Path and optimize the Path String

[Julian Feinauer]

Thank you very much!

Julian

Am 27.08.20, 15:14 schrieb "Jialin Qiao" <qj...@mails.tsinghua.edu.cn>:

    Hi Julian,

    Here is our discussion:

    ## Goals

    1. let's support double quota on multiply locations of a path (not only the 
measurement);

    2. let's uniform the convert between path and string;

    3. maybe we can expose Path object to users in session API.

    ## Examples

    ### Session

    ```
    String deviceId = "root.sg1.\"d..1\"";
    List<String> measurements = new ArrayList<>();
    measurements.add("\"s..1\"");
    ```

    ### JDBC

    ```
    statement.execute("insert into root.sg1.\"d..1\"(timestamp, 
    \"s..1\") values(1,2)");

    statement.execute("select * from root");

    headers in result:
    +-----------------------------+-------------------------------+
    |                         Time|root.turbine1.\"d..1\".\"s..1\"|
    +-----------------------------+-------------------------------+
    |1970-01-01T08:00:00.001+08:00|                            2.0|
    +-----------------------------+-------------------------------+
    ```

    ### TsFile

    We store the following Strings in file:

    ```
    String devceId = "root.sg1.\"d..\1";
    String measurementId = "\"s..1\"";
    ```

    ### Schema tree in IoTDB

    root -> sg1 -> \"d..1\" -> \"s..1\"


    Thanks,
    --
    Jialin Qiao
    School of Software, Tsinghua University

    乔嘉林
    清华大学 软件学院

    > -----原始邮件-----
    > 发件人: "Julian Feinauer" <j.feina...@pragmaticminds.de>
    > 发送时间: 2020-08-27 16:30:15 (星期四)
    > 收件人: "dev@iotdb.apache.org" <dev@iotdb.apache.org>, "saint...@gmail.com" 
<saint...@gmail.com>, "Jialin Qiao" <qiaojia...@apache.org>
    > 抄送: 
    > 主题: Re: Support double quotation in Path and optimize the Path String
    > 
    > Hi Boris,
    > 
    > excellent initative!
    > I also had a discussion with @Xiangdong Huang and @Jialin Qiao about that 
matter.
    > 
    > Does one of you remember where we documented our discussion?
    > 
    > Julian
    > 
    > Am 27.08.20, 05:44 schrieb "Boris Zhu" <zhutianci123...@gmail.com>:
    > 
    >     Hi
    >     I write a pr about using the detached full path instead of the full 
path
    >     between SQL analysis and metadata in order to reduce unnecessary path
    >     split. A new Class extends Path which is called “PartialPath” which
    >     contains the detached full path. BTW, you can use double quotes in 
name of
    >     device. here is the pr, 
https://github.com/apache/incubator-iotdb/pull/1627
    >