Michael Engel wrote:
>Hello,
>
>I am currently work on implementing the reference model in java. I have
>noticed an issue that I would like to get resolution on. While looking over
>the RM.DATA_TYPES.BASIC package in RM.DATA_TYPES(Revision 1.8) and comparing
>it to the HTML Model Tree, generated by Eiffel, I noticed something. In the
>model tree there is a data type called CANONICAL_FRAGMENT which is not in
>the 1.8 Revision. The CANONICAL_FRAGMENT has a description of "Abstract
>parent type of all concrete data value types". What is the pupose of the
>CANONICAL_FRAGMENT and what is the class desctiption? Also, what is the
>projected timeframe on updating the documentation to reflect this and any
>other changes?
>
>
This class just provides routines to read in and output data type
instances in a standard tagged format, which is now XML (some years ago
in GeHR, we used another format). It is really only important for
implementation - not for the standard. However, I strongly recommend
that we do standardise our XML tagged form of data types instances. This
will be done formally through the release of a data types XSD soon. For
the moment, you can use as a guide the comments on the implementation of
these routines in the Eiffel classes. For example, in DV_QUANTITY, you
can see:
make_from_canonical_string(str:STRING) is
-- make from string of form:
-- <magnitude>real</magnitude>
-- <units>string</units>
-- [<accuracy>real</accuracy>
-- <accuracy_is_percent>boolean</accuracy_is_percent>]
-- <precision>integer</precision>
hope this helps.
>Thank you for you time.
>
>Mike Engel
>
>engelme at vvm dot com
>
>P.S. I am very impressed and thankful for all of the work that OpenEHR
>Foundation and Community is giving to the international community.
>
>-
>If you have any questions about using this list,
>please send a message to d.lloyd at openehr.org
>
>
>
>
deferred class CANONICAL_FRAGMENT
inherit
XML_TOOLS
export {NONE} all
end
feature -- Initialization
make_from_canonical_string(str:STRING) is
require
String_exists: str /= Void and then valid_canonical_string(str)
deferred
end
feature -- Status Report
valid_canonical_string(str: STRING): BOOLEAN is
-- True if str contains required tags
deferred
end
feature -- Output
as_canonical_string: STRING is
-- standardised form of string guaranteed to contain all
information
-- in data item
deferred
ensure
Result_exists: Result /= Void
end
end
--
___________________________________________________________________________________
CTO Ocean Informatics (http://www.OceanInformatics.biz)
Hon. Research Fellow, University College London
openEHR (http://www.openEHR.org)
Archetypes (http://www.oceaninformatics.biz/adl.html)
Community Informatics (http://www.deepthought.com.au/ci/rii/Output/mainTOC.html)
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If you have any questions about using this list,
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