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Improve modelling of Structure classes

Description

The current model for the STRUCTURE classes means that
there is an unnecessary intervening CLUSTER in instance structures
for the ITEM_LIST type, due to the representation attribute being
only 1:1.

Change Description

Change the model to have efficient representations for all the data structure types (but still based on CLUSTER and ELEMENT), including ITEM_LIST. Show in the text how these structures would be coded in CEN ENV 13606 structures. Add a function as_hierarchy:ITEM to DATA_STRUCTURE, and describe how this would be implemented in all subtypes of DATA_STRUCTURE.

Impact Analysis

None

Reason For Rejection

None

Status

Assignee

JeffJ

Reporter

Zar Zar Tun

Approved By

ARB

Components

Fix versions

Priority

Minor