[Gnumed-devel] GNUmed HL7 import

[Karsten Hilbert]

GNUmed now has rudimentary HL7 lab results import. Here's how
it works (all manually ATM), in a rough overview:

- select "unwrap XML to HL7" if needed

        this extracts HL7 from CDATA attributes of XML nodes

- select "stage HL7 file"

        this takes an HL7 file, splits it up into
        single-MSH/single-PID files, and stores those files into
        clin.incoming_data_unmatched along with a copy of the
        import log in the .comment

- select "browse incoming data"

        this exports one row from clin.incoming_data_unmatched
        and tries to import it into a patient chart,

        if there is a value in .pk_identity_disambiguated it will
        use that patient, regardless of what the HL7 data says

        (currently we don't have a way to set that field yet
         however, the browser displays the identifying information
         such that a missing patient can be created)

        if there is no value in that field it will ask whether
        to use the active patient (if there is one)

        on failure it will update the .comment field of the
        incoming data entry, the incoming entry can be viewed
        (data and comment) from the incoming data browser

        on success it will delete the incoming_data entry (the
        data is now in clin.test_result et alii), the hl7 data
        file will be appended (as a new part) to a document "hl7
        data" in the patient's document archive and a note about
        the import (lab & no+date of results & import file) is
        added to the patient chart as an administrative entry

Rough but works.

Now GNUmed needs to be thrown at with loads of HL7 files for
testing. If people care to provide files I'd be glad to test.
I'll push this to the Git repo tomorrow.

Karsten
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