Hello Bruce,
Here are some answers to your XML questions:
Hello,
My first question is somewhat of a newbie issue to TBC. I
wanted to do something with Genealogy for a project and so I started
by converting a couple GEDCOM files to XML. GEDCOM is the format used
by Genealogy - it is standard, as it were.
How did you convert GEDCOM files to XML in TBC? What did you use?
So, the XML file returned has no namespace definitions. I
thought I'd make certain tags appear as sub-properties and sub-classes
of other vocabulary classes and properties. How would one go about
doing this, what's going to be the best way?
The best way in TBC related to manipulating XML files at the moment is
to use SXML. You can open an XML file as an SXML ontology either by
double-clicking on it in TBC or right-clicking on it and selecting "Open
With... > TopBraid (Semantic XML Documents)". You can then see all XML
instances as triples under Associations View (from the menu, select
Window > Show View > Associations), where then you click on "Select
property..." from the toolbar, and select "composite:child". You can see
the instances, and what classes and properties they get.
Import it into a RDF file?
If you want to get more sophisticated, and want to control which class
that an instance has as its type, then you can construct an ontology
where you define the sub-class hierarchy and attach sxml:element
annotations on the classes, with element tag of the instance as the
value of the annotation. Then, you can import an XML file through
Imports View, and the SXML instances will have these annotated classes
as their type. If you want more sophisticated and more customized
structure, you can write SPIN rules (SPARQL Rules), where you can
construct new triples on the existing SXML triples.
Or just open the XML file in TBC and import other vocabs? I'm
not sure how to then get from an arbitrary XML file into an OWL or RDF
file.
When an XML file is imported into an ontology, it is already treated as
an SXML ontology.
Oh, how hard would it be to take one large XML file and also
produce individual files for each defined person in the XML version of
the GEDCOM - so I would have one large RDF file and several smaller
files?
The answer is to use SPARQLMotion, where there are modules for imports,
iterations and exports to various formats.
Gokhan
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