Hi Tianan, personally I found it difficould to learn Calcite from the Documentation, but the csv Examples are quite okay to follow. I also filed a Jira for this issue [1] and prepared a minimal working example for Calcite on top of a tsfile in my fork [2].
The Example in the Repo is fully functional and maps each device from a tsfile to one Table and each measurement to a column (+ timestamp). It supports basically all SQL Queries. Of course there is no efficiency yet like predicate pushdown or path selection pushdown or so... this is the fun work for the future : ) Best Julian [1] https://issues.apache.org/jira/browse/IOTDB-28 [2] https://github.com/JulianFeinauer/incubator-iotdb/tree/calcite-integration Am 27.02.19, 16:12 schrieb "李天安" <[email protected]>: Hi Julian, Nice to hear from you. I’m very glad to hear that you’d like to help us with the integration. We want to proceed the integration as follows: Firstly, we will learn how you integrate calcite with other products from official website. After that, we discuss the structure of Calcite Integration with you. Tianan Li > 在 2019年2月26日，上午4:39，Julian Feinauer <[email protected]> 写道： > > Hi Tianan, > > nice to hear from you! > I just recently recognized how far you have come and how less time I commited to IoTDB. > I would really love to participate in this effort and help you with the Calcite Adapter. > What do you think is the best way to proceed? > I can tell you something about the structure of Calcite Integratioons (or make a walkthrough through the Plc4x integration I’ve done). > > What do the others think? > > Julian > > Von: 李天安 <[email protected]> > Datum: Montag, 25. Februar 2019 um 17:01 > An: "[email protected]" <[email protected]> > Betreff: Fwd: Integrate Calcite in IoTDB > > > > > 下面是被转发的邮件： > > 发件人: 李天安 <[email protected]<mailto:[email protected]>> > 主题: Integrate Calcite in IoTDB > 日期: 2019年2月25日 GMT+8 下午2:56:56 > 收件人: [email protected]<mailto:[email protected]> > 回复－收件人: [email protected]<mailto:[email protected]> > > Hi Julian, > > My name is Tianan Li, one of the initial committers of IoTDB project. Over the past few months, we have optimized the structure and content of the IoTDB project and basically completed it. Now we hope to integrate with Calcite. I wonder if you would like to instruct us to complete the Calcite-IoTDB Adapter. > > Best > Tianan Li > > > 在 2018年12月3日，上午5:25，Julian Feinauer <[email protected]<mailto:[email protected]>> 写道： > > Hi, > > my name is Julian Feinauer and I come from Apache Calcite, Edgent and PLC4X. My interest is mostly in time series processing at the edge. In my daytime job I work for two companies called pragmatic minds and pragmatic industries which we founded nearly 3 years ago in South Germany. > I love the idea behind iotDB as it is realy the materialization of many of my thoughts about what we really need for efficient storage of ts data. > I would love to get my hands dirty on the query and filter api and perhaps even write a small Calcite Adapter, when I find some time in the next weeks. > > We have many "IoT" projects with practical use cases in the industry so I'll try to bring my perspective in as best as possible. > > Best > Julian > >
