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Goals

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Item

Presenter

Notes

5min

Opening

adding Kjetil Jørgensen (DIPS) as a new member of the openEHR SEC Expert group

10min20min

AQL: quick review issue list, progress

Sebastian Iancu

45min60min

AQL: Cartesian product, permutation, etc

Refs:

Bjørn Næss Seref Arikan

https://discourse.openehr.org/t/the-aql-cartesian-product-problem-specquery-9/1017

10min

AM spec

Seref Arikan

: need a semantics of query execution to solve this properly; SQL query semantics w.r.t. relational tables is definitive; doesn’t yet exist in AQL;

  • Matija Polajnar : squash doesn’t solve everything; there is a rule for dealing with interior container objects (e.g. CLUSTER.items)

  • Bjørn Næss : DIPS has a heuristic solution that handles some cases, e.g. the terminal ‘array of comments’ example.

  • Seref Arikan (Personal) : one unique thing in AQL is that FROM predicates are not only filters, but can be used in the SELECT part - cf Xpath etc; other Q: is AQL its own thing, or can we consider it in a more general class of query language? BTW don’t forget the AND/OR question…

  • Kjetil Jørgensen : agree with Seref Arikan - need an agreed execution algorithm.

    • AQL: functions

    Sebastian Iancu

    • Matija Polajnar ; funcs on server mainly to reduce data retrieved (i.e. reduce first)

    • Seref Arikan , Bjørn Næss , Sebastian Iancu : stick to ‘classic’ style of 'FUNCNAME(args)', document in a self-standing way.

    • Thomas Beale - could document function semantics by reference to Foundation / Base types that already exist.

    • Erik Sundvall (@sundvall.org) - defined ‘core’ group of funcs, and progressively more sophisticated collections. Use these profiles in conformance claims (eventually).

    • Seref Arikan : consider how Xpath, Xquery do functions.

    If time permits

    10min

    BASE spec status

    Thomas Beale

    Thomas Beale will continue to work on describing more the “FROM”

    AM

    Pieter Bos

    Moved to next meeting

    TDD

    Bjørn Næss

    If time permits

    10min

    BASE spec status

    Thomas Beale

    Outstanding issues

    DV_EHR_URI analysis https://openehr.atlassian.net/wiki/spaces/spec/pages/786956289/DV+EHR+URI-related+Issues

    Serial data formats: https://specifications-test.openehr.org/releases/SM/latest/serial_data_formats.html

    Integration package link to presentation

    REST Release 1.1.0

    View Entries, Problem Lists etc. Initial UML here.

    Tags (RM 1.2.0)

    ITS status: XML, JSON, BMM

    Website: adding examples, type definitions/navigator

    CDS-hooks

    Action items

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