On 16.07.2012 09:52, Dave Reynolds wrote:
On 16/07/12 08:45, Ian Dickinson wrote:
Hi Dhomas,
On 16/07/12 02:48, DHOMAS HATTA FUDHOLI wrote:
Hi All,
Is there any method in Jena API to rename ObjectProperty or
DatatypeProperty?
I could find only the way to rename Resource, maybe Class, using
renameResource() method in ResourceUtils class.
Thanks in advance for any advise.
If you look at the Java class hierarchy, all of the ObjectProperty,
DatatypeProperty, OntClass, etc are also subclasses of Resource. This
conforms to the RDF semantics, in which a property is a special kind of
resource which plays a particular role in the RDF graph. So in summary:
use renameResource() to rename any kind of resource in a Jena model,
including an ObjectProperty.
I don't think, so the code for renameResource does not rename usages
in the predicate position. Unless that's changed recently (my local
copy is out of date).
Dave
Hi Thomas.
I think it is very difficult to rename resources and especially
properties in a rdf-graph, because if you do this you have to refresh
all entities within the store. One simple way would be to run over all
resources, delete the statement with the old property and add a new
statement with the new property. But on large complex graphs, this will
be very slow. Maybe it is an alternative to change the property and
reload the data.
Greetings
Stefan
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Stefan Scheffler
Avantgarde Labs GmbH
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Email: [email protected]
