Re: [Tm4j-developers] Can Locators be removed?

[Khalil A. <ka...@te...>]

Hi Andy,

Currently the code doesn't clean up unused locators. The issue is that 
the data model allows a locator to be referenced as the value of an 
occurrence, as a subject indicator, a subject address, a source locator 
or a topic map base locator and potentially there could be other 
references to the same object. I guess I could add code to check if a 
locator is unused and remove it from the database in that case. This 
would potentially slow down some property changes (if it requires an 
additional lookup to check if the removed/modified locator is now 
unused) but it might be beneficial in topic maps with a high rate of 
churn (e.g. new topics being regularly imported and then destroyed).

Can you add a bug report to the tracker for this please ?

Cheers,

Kal

On 9 Nov 2004, at 06:51, Andy Peel wrote:

> Hello,
>
> I have a topic map for which I've changed the base locator using:
>
> 	org.tm4j.topicmap.TopicMap.setBaseLocator(Locator base)
>
> However, this leaves a row in the locator table (I'm using Hibernate) 
> for
> the old locator.
>
> Is there a way to remove the old locator?
>
> Thanks,
>
>
> Andy.
>
>
>
>
>
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