[sc34wg3] SAM,SAM+,SAM++ Or how to extend SAM
Tue, 11 Feb 2003 20:54:07 -0500
> In addition, it would be useful to have a property which is a list of all
> external topic map resources referenced from the topic map through
> <topicRef> elements.
> These two properties would be especially useful in processing in an
> internet environment where one or more resources may be temporarily
I totally agree with that. I think that Internet scenario is very important
and SAM has to support it.
Because of this Internet related scanario I am also thinking about
serialization of SAM+ and SAM++.
Let's say that somebody wants to reuse my topic map. I do not want to
pretend that all topics and assertions are "my invention" if I reused other
topic maps. When I export my topic map I would like explicitly specify what
is "local" for this topic map and what was loaded from other places. So when
other people load this "extended" topic map they have a chance to see the
source of information items. I am not saying that they have to trust me and
load map with my source tags. They can load original maps from original
sources and merge them with my original information.
I think it is an important feature if we want people to reuse topic maps on
Internet. One of the problems that I see here is that XTM does not support
concept of information source directly. We have to add special "system"
occurrences for topics, some "system" associations, some PSIs and reify,