Alexander Sidorov wrote:
Hi, Hugh!

These examples demonstrate RDF-store access by EF using Views. But I would like some more dynamic way: I don't like the idea of creating a view for every query. The one dynamic example in that list called "Creating Silverlight Application for Browsing RDF Data <http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSilverlightSPARQLExample>" doesn't use EF at all: it uses SPARQL through http.

So are there any means for dynamic RDF-store querying from .NET except nake http? I have the only idea about using Jena or Sesame converted with IKVM.NET <http://IKVM.NET>, but may be there are some other options?

Are you trying to data returned from Web Services and/or Web Resources (e.g. HTML etc.)? If so then its a two phased process:

1. Get the data into Virtuoso via its in-built Sponger Middleware (if there isn't a Cartridge for the data source your interested in, consider making a custom cartridge or hooking your extractor into the Sponger)

2. Use Virtuoso ADO.NET provider (which works fine with LINQ or any other mechanism that interacts with Entity Frameworks) to query the Quad Store or send it SPARQL which can do perform configurable crawling "on the fly".

Links

1. http://virtuoso.openlinksw.com/screencasts/virtuoso-rdf-middleware3.swf
2. http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSponger



Kingsley
Regards,
Alexander

2010/1/3 Hugh Williams <[email protected] <mailto:[email protected]>>

    Hi Alexander,

    There are a number of  "Sample Walk-through Application" examples
    on accessing using the Virtuoso ADO.Net Provider for accessing the
    RDF-store via various methods, in the documentation at:

http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtAdoNet35Provider

    I hope his is what you are looking for ...

    Best Regards
    Hugh Williams
    Professional Services
    OpenLink Software
    Web: http://www.openlinksw.com
    Support: http://support.openlinksw.com
    Forums: http://boards.openlinksw.com/support
    Twitter: http://twitter.com/OpenLink

    On 2 Jan 2010, at 16:33, Alexander Sidorov wrote:

    > Hello!
    >
    > Are there any examples of using Virtuoso provider for accessing
    non-relational sources (I am especially in accessing RDF-store)?
    >
    > Regards,
    > Alexander
    >
    
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Regards,

Kingsley Idehen       Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO OpenLink Software Web: http://www.openlinksw.com





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