Re: [TM4J-users] Problem to create a new topic using the name of a deleted topic

[Dicheva, D. <dic...@ws...>]

Hi Lars,

It seems that I solved my problem by using two TopicMapSystems - one
with merge by topicname set to false (which I normaly use, i.e. when
updating topics) and another one with that feature set to true (which I
only use to merge two files).

Thanks for your idea - it seems good; what do you mean by item
identifiers/source locators - subjectIdentifier? subjectLocator? In
other orders, how the merge algorithm works in case merge by topicName
is false?  

Thanks a lot for your help!

Cheers,
Darina 

> -----Original Message-----
> From: Lars Heuer [mailto:he...@se...] 
> Sent: Wednesday, June 11, 2008 8:31 AM
> To: Dicheva, Darina
> Cc: tm4...@li...; Lars Johnsen; 
> tm4...@li...
> Subject: Re: Problem to create a new topic using the name of 
> a deleted topic
> 
> Hi Darina,
> 
> > So, if in a topic map the merge byTopicName feature is set 
> > 
> (tmfac.setFeature("http://tmapi.org/features/merge/byTopicName",true);
> > ),
> 
> > one cannot delete topics and create them back... It is 
> strange, isn't 
> > it? Do you have an idea what is the logic behind?
> 
> I've no idea, sorry. I can look into the code but that may 
> take some time. Further, I don't think that this "feature" 
> should stay.
> 
> > Obviously, I have to give up on using the merge by topic 
> name feature.
> 
> I'd use simple item identifiers (source locators). It should 
> be very easy to use item identifiers instead of names to 
> merge topics. In addition to the default name, which was 
> previously used to merge topics, you create an item 
> identifier "http://example.org/<default-name-here>".
> 
> If you do that for every topic, your topics will be merged 
> because they have the same item identifier. I think it's a 
> better solution than relying on the "merge by name" (Topic 
> Name Constraint) 'feature'
> which was deprecated during the development of the TMDM.
> 
> Best regards,
> Lars
> --
> Semagia
> <http://www.semagia.com>
> 
> 
>