[Tm4j-developers] [ tm4j-Feature Requests-1596758 ] support subjectIndicatorRef in parameters

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Feature Requests item #1596758, was opened at 2006-11-15 03:10
Message generated for change (Comment added) made by kal_ahmed
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Category: Interface Improvements (example)
Group: Next Release (example)
Status: Open
Priority: 3
Private: No
Submitted By: Ichiro Furusato (ifurusato)
Assigned to: Nobody/Anonymous (nobody)
Summary: support subjectIndicatorRef in parameters

Initial Comment:
currently the Variant interface includes an addParameter(Topic) method, but XTM 1.0 also permits <subjectIndicatorRef> elements as children of <parameters>, so there should probably be an addParameter(Locator) method in the API as well.

Calls to this method would add a Locator instead of a Topic. When one doesn't want to reify the subject of the parameter (such as XTM 'Display') as a Topic, this would be welcome.


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>Comment By: Kal Ahmed (kal_ahmed)
Date: 2006-11-15 08:50

Message:
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My feeling is that the underlying data model should keep all parameters as
topics, otherwise it gets messy for a programmer calling getParameters to
have to deal with a list of Topic and Locator objects. However, a
convenience method addParameter(Locator l) could operate as follows:
1) Find a topic with subject identifier l. If found add that topic as a
parameter otherwise,
2) Find a topic with source locator l. If found add that topic as a
parameter otherwise,
3) Create a new topic and add l as a subject identifier then add that
topic as a parameter.

(Note that step (2) is required because a topic T with subject identifier
L will merge with a topic T with source locator L under topic map merging
rules, so if you didn't do that step then step (3) would create a topic
which would instantly get merged).

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