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Component | Impact |
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On RM |
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On existing archetypes |
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On archetype tooling |
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On existing RM-1.0.2 based software |
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On existing RM 1.0.2 data |
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Discussion
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Candidate A.3 - Integrated model 1 - preserve current archetypes
Proposal - Thomas Beale
Status
Under development
Design Concept
The design integrates Candidate A (ITEM_STRUCTURE becomes a child of CLUSTER) and A.2 (ELEMENT.value & null_flavour move to ITEM). The effects of this should be as follows:
- with respect to CLUSTER/ELEMENT, same as for A.2, i.e. CLUSTERs now get optoinal values & null_flavour as well
- ITEM_STRUCTURE is retained because it is used ubiquitously in the openEHR RM and archetypes; therefore the current archetypes will not break.
Changes
- The value properties from ELEMENT are moved to ITEM.
- ITEM_STRUCTURE becomes child of CLUSTER
- DATA_STRUCTURE class removed
Diagram
The following shows the result. 
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Candidate B - Remove ITEM_STRUCTURE
Proposal - Pablo Pazos
Status
under construction
Design concept
- Remove ITEM_STRUCTURE and use ITEM for structures without losing meaning/semantics/modeling capabilities.
Changes
- Removed ITEM_STRUCTURE and children.
- Added attribute structure_type:CODE_PRHASE to CLUSTER (as in 13606 model)
- Added method is_root() to ITEM
- ITEM inherits from DATA_STRUCTURE
- Added backguards relationship "parent" from ITEM to CLUSTER
Diagram
I have the source of this diagram if anyone wants it, it's a .dia file (http://live.gnome.org/Dia)
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Candidate C - class renaming for easier explanation
Proposal - Erik Sundvall
Status
under construction
Design Concept
Below is an initial suggestion based on some previous mail threads
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(TODO: find links to more threads in mail-archive)
Changes
Diagram
'UML' image above produced by pasting the "diagram sourcecode" below to http://yuml.me/diagram/scruffy/class/draw2 (initially by Erik Sundvall)
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