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  1. Qt
  2. QTBUG-25888

RESEARCH: Better reporting of meta-data

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    Details

    • Type: User Story
    • Status: Withdrawn
    • Priority: P3: Somewhat important
    • Resolution: Out of scope
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Sensors
    • Labels:
      None

      Description

      Overview

      We need to access all meta-data from a pure QML app (so for example,
      QSensor::xxx static methods need to be exported somehow).

      Probably have a "system meta-data" object that has the
      "availableSensorsChanged" signal (rather than push that on QSensor).

      Need a clear guideline. There's spec/doc meta-data (ie. that we expect
      people to look up in the documentation or hard-code in their apps).
      There's type-specific meta-data (eg. compass calibration). There's
      hardware-specific meta-data (eg. how many of the 3 leds should the dipro
      hardware turn on).

      We should structure the code so there are getters rather than setters.
      That way if nobody asks for the meta-data we don't do any work.

      It'd be great to get meta-data on a sensor without having to "create"
      that sensor. Maybe not such a big deal though...

      Implementation Plan

      Determine what meta-data we want to have.

      Implement backend stuff.

      Implement C++ API.

      Implement QML API stuff for getting at meta-data.

      Notes

      Nothing yet.

      Research Questions

      Do we push spec limits as meta-data?

      What type-specific meta-data do we need?

      What hardware-specific meta-data do we need?

      Can we access everything from QML and C++?

      Meta-data is about identifying a sensor (so including human-readable name, description and even icon could be good) and about choosing one sensor over another (eg. this accelerometer is more sensitive than that one and I'm trying to implement a seismograph).

      Acceptance Criteria

      • A solid understanding of the meta-data we want to repo
      • User stories for the implementation

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          Activity

            People

            Assignee:
            lpotter Lorn Potter
            Reporter:
            lramsay Lincoln Ramsay (closed Nokia identity) (Inactive)
            PM Owner:
            Veli-Pekka Heinonen Veli-Pekka Heinonen
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

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