FHIR Chat · reslicing eventCoding · IG creation

Stream: IG creation

Topic: reslicing eventCoding

Eric Haas (Dec 10 2019 at 13:45):

I think this has been brought up before but I can't find a solution:

I have created a test of this here: https://github.com/Healthedata1/IG-Template3/tree/test-coding-reslice

with the Structuredefinitions in here: https://github.com/Healthedata1/IG-Template3/tree/test-coding-reslice/source/resources

StructureDefinition-profile-test1-messageheader.xml
StructureDefinition-profile-test2-messageheader.xml

I constrain MessageHeader.event[x] to coding in test1 with an extensible binding like so...

pasted image

using this elementdef in the diff:

    <derivation value="constraint"/>
    <differential>
        <element id="MessageHeader">
            <path value="MessageHeader"/>
            <mustSupport value="false"/>
        </element>
        <element id="MessageHeader.eventCoding">
            <path value="MessageHeader.eventCoding"/>
            <min value="1"/>
            <max value="1"/>
            <type>
                <code value="Coding"/>
            </type>
            <mustSupport value="true"/>
            <binding>
                <strength value="extensible"/>
                <valueSet value="http://www.fhir.org/guides/test3/ValueSet/blah-codes"/>
            </binding>
        </element>
    </differential>

Eric Haas (Dec 10 2019 at 13:47):

... then try to reslice with a specific code using the pattern in a second profile test2 based on test1:

pasted image

Eric Haas (Dec 10 2019 at 13:49):

looks nice in the rendered diff but the full view is all messed up :-(

pasted image

Eric Haas (Dec 10 2019 at 13:51):

and qa error on the id and extension links...

here is the element definition:

<differential>
    <element id="MessageHeader">
        <path value="MessageHeader"/>
        <mustSupport value="false"/>
    </element>
    <element id="MessageHeader.eventCoding">
        <path value="MessageHeader.eventCoding"/>
        <sliceName name="eventCoding"/>
        <min value="1"/>
        <max value="1"/>

        <type>
            <code value="Coding"/>
        </type>

        <patternCoding>
            <system value="http://www.fhir.org/guides/test3/CodeSystem/blah-codes"/>
            <code value="blah"/>
            <display value="Blah"/>
        </patternCoding>

    </element>
</differential>

Eric Haas (Dec 10 2019 at 13:53):

needless to say I tried a few things but seeking some help on how to do this with pattern and whether its me or an ig-pub thing

Grahame Grieve (Dec 10 2019 at 22:15):

my first question is why you are even talking about slicing? And then, why <sliceName name="eventCoding"/> - there's no introduction of slicing other wise

so my second question is why this isn't just a snapshot generation error

Eric Haas (Dec 11 2019 at 00:24):

The snapshot generates a slice from "MessageHeader.eventCoding" so what should it be called when the element is constrained even further Anyway, I don't care what to call it, I just want a fix. So it sounds like its a snapshot generation error then? It doesn't matter if the sliceName is present or not - the same error and output occurs.

Grahame Grieve (Dec 11 2019 at 00:34):

there's definitely a bug in the snapshot generation; working on it now

Last updated: Apr 12 2022 at 19:14 UTC