[Activerdf] SQL syntax error setting up rails + activerdf + sqllite

Benjamin Heitmann benjamin.heitmann at deri.org
Tue Nov 21 11:53:01 GMT 2006


Lee Feigenbaum wrote:
> Any idea what's up? Should I file a bug? (Figure I'd post here while 
> waiting for my launchpad registration email to arrive, in any case.)
>   
How do you add your data sources to Rails ? (Maybe you declare them in 
your databases.yaml which is currently not supported)

I think normally running a rails generator should not invoke any 
ActiveRDF adapter, because you cant generate a scaffold from something 
in ActiveRDF.

> PS -- When I installed the activerdf gems on my DreamHost account using a 
> local gems install, something went screwy with the rdoc installation such 
> that I don't seem to have any docs for the activerdf classes and rdflite 
> adaptor. Is this available online somewhere?
>   
I will have to look if it is available somewhere.



> PPS -- http://sw.deri.org/wiki/ActiveRDF/rdfbasics explains how Active RDF 
> uses existing seed data to figure out what predicates are intended when 
> coding with abbreviations. I had thought that a previous version of Active 
> RDF could learn the available predicates from an RDFS or OWL vocabulary. 
> Was this ever the case? Is it still the case? If so, are there any 
> examples or documentation of this? 
>
>   

The mentioned seed data, is an RDF Schema (using OWL to a certain degree 
is also possible).

If you create an empty instance of an RDFLite or Redland adapter, you 
can then in environment.rb load the schema information like this:

myAdapter.load("/path/to/schema-or-data-file.nt")


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