Default values in OPT 1.4

Specifications ADL
1

Several versions of the OPT 1.4 XSD seem to be used. Pablo did a comparison of the different versions in OPT version, schema & document - #34 by pablo .

I am currently writing a converter from OPT 1.4 to ADL 2 templates in source form. It now mostly works and can be found in Opt 1.4 parser and converter by pieterbos · Pull Request #261 · openEHR/archie · GitHub . It can also be used to parse OPT 1.4 into the AOM 2 directly, without conversion.

However, in the different OPT 1.4 versions, the way to define default values is very different:

  • one has default values on every C_ARCHETYPE_ROOT, with a path, in terms of primitive types (string, boolean, integer, etc)
    • a sub-variant, where this can be on every C_COMPLEX_OBJECT instead
  • one has a separate section, containing a mapping from paths to extended C_ATTRIBUTES, with default values defined as DV_ types, so DV_TEXT, DV_CODED_TEXT, etc.

All of the OPTs I found use the second variant, with a separate section. I could write the first one as well relatively easily, but of course only if it is in use.

So my question: Is the other variant of defining default values actually used? If the variant on C_ARCHETYPE_ROOT is used, does anyone have any examples of that?

2

Are you just talking about what the _default blocks look like in OPT1.4, not the generated OPT2, which should have them inline, like ADL2?

3

Yes, just OPT 1.4 there are several versions of the XSDs in use. So I would like to know if this specific feature is actually in use as well in the different variants.

In OPT2 it is very clear what to do.

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