Hi Leonardo We are just about to produce a new XML schema for archetypes based on the new ADL 1.5 and getting rid of a lot of clutter for XML which was not required.
For example one change I have been promoting is the recording of existence. At present in the AOM it is an interval of 0..1 which can be constrained to 0..0 and 1..1. It is worth considering this carefully as an example of how we could simplify the expression in XML just as Thomas does in ADL. First, the rule is that the reference model sets the minimum constraint. This must be either 0..1 (optional) or 1..1 (mandatory) ie attributes in the reference model can be optional or mandatory (no other choices). If the attribute is mandatory then there is no logical existence constraint that can be applied. So the constraint statements in the AOM that are possible for optional attributes are: 1) 0..0 (prohibited) and 2) 1..1 (required). This is a binary constraint. For this reason we are proposing that existence is represented as an optional attribute with 2 values 'required' and 'prohibited'. This is easy to read and can be transformed into the in memory interval easily during de-serialisation. It also means that existence will usually not appear in an actual archetype as it is rarely used. It would be good to have other ideas on simplification of the XML schema as we move to the new 2.1 AOM. Cheers, Sam > -----Original Message----- > From: openehr-technical-bounces at chime.ucl.ac.uk [mailto:openehr- > technical-bounces at chime.ucl.ac.uk] On Behalf Of Moretti Leonardo > Sent: Wednesday, 12 May 2010 2:49 AM > To: openehr-technical at openehr.org > Subject: Archetypes and XML-Schemas > > XMLSerializer.output() (xml-serializer-1.0.1.jar) produce XMLs that are > not compliant with openEHR XML-Schemas > (http://www.openehr.org/releases/1.0.2/its/XML-schema/index.html). > Also the xml representation taken from http://openehr.org/knowledge/ > are > not valid XML instances respect to these schemas (for example > <http://jira.noemalife.loc:8080/secure/attachment/15267/openEHR-EHR- > OBSERVATION.body_weight.v1.adl> > openEHR-EHR-OBSERVATION.body_weight.v1 > <http://jira.noemalife.loc:8080/secure/attachment/15267/openEHR-EHR- > OBSERVATION.body_weight.v1.adl>). > > The main problem is that the order of the elements is not equals to > that > one specified in <xs:sequence> blocks of XSDs. > > What is "wrong", the implementation or the schemas? The order of the > elements in xml representation of an archetype must be fixed? > > Thanks > leo > > -- > > Ing. Leonardo Moretti > Senior Analyst > > *NoemaLife S.p.A > *Via Gobetti, 52 > 40129 Bologna ? ITALY > T +39 051 4193911 > F +39 051 4193900 > lmoretti at noemalife.com <mailto:lmoretti at noemalife.com> > > www.noemalife.com <http://www.noemalife.com/> > > _______________________________________________ > openEHR-technical mailing list > openEHR-technical at openehr.org > http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-technical
