[Tm4j-developers] [ tm4j-Feature Requests-781928 ] instanceOf with subjectIndicator

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Feature Requests item #781928, was opened at 2003-08-02 12:27
Message generated for change (Comment added) made by kal_ahmed
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Category: Interface Improvements (example)
Group: None
>Status: Closed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: instanceOf with subjectIndicator

Initial Comment:
While the XTM standards says that instanceOf could contain a 
reference to a topic OR to an subject indicated by a 
subjectIndicator, tm4j does only allow for topic references. 
 
In org.tm4j.topic.Topic I propose a new method: 
 
public void addType(Locator subject) throws 
PropertyVetoException; 
 
Problem is that the setTypes() and getTypes() methods have to 
be changed as well. 

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>Comment By: Kal Ahmed (kal_ahmed)
Date: 2003-12-10 14:18

Message:
Logged In: YES 
user_id=176992

Although the XTM *syntax* allows you to refer to the class
using a subjectIndicatorRef in the instanceOf element, in
the data model, the reference is always to a Topic. When
importing XTM, TM4J will look for a topic with the subject
indicator specified in the subjectInidicatorRef element and
if it does not exist, it will create a new topic which has
that subject indicator set.

addType(Locator) *could* be treated as a convenience method
that does the look-up by subject indicator and creates a new
topic if one does not already exist, but I think I would
prefer to leave the core APIs as compact as possible at the
moment.


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