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ha-mo-we / Racer

Racer is a knowledge representation system that implements a highly optimized tableau calculus for the description logic SRIQ(D).
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Racer with Allegro Graph: illegal operator error condition #8

Closed fcbr closed 9 years ago

fcbr commented 9 years ago

I'm trying to use Racer with Allegro Graph 5.1 running locally, but when I issue (open-triple-store "wn30"), I get an error saying "illegal operator". I tried specifying the :directory key as well, but it still gives me the error.

Racer is running under Allegro Lisp (mlisp) 9.0, while LRacer is running under SBCL 1.2.13.

This is the server output with -debug on:

(open-triple-store "wn30")

An error condition has been signalled (debug handler): Illegal
                                                       operator
                                                       in
                                                       (open-triple-store
                                                        wn30)
ha-mo-we commented 9 years ago

Hi Fabricio,

The open source version of Racer does not support triple store access with open-triple-store. With AllegroGraph 3 there was an Allegro triple store included in the RacerPro executable, i.e., AG3 was provided as fasl files, and we were allowed to include them in RacerPro. Later, with AG4, Franz switched to a server model for AG (fasls were not provided any longer). We cannot provide AG3 fasl files as part of the open source version of Racer (wouldn’t work with SBCL BTW).

If you use AG5 why don’t you just send a SPARQL query to AG to retrieve tuples, store them as RDF/XML, and use owl-read-file to read the descriptions into a tbox/abox pair?

All the best, Ralf

On 25.08.2015, at 14:47, Fabricio Chalub notifications@github.com wrote:

I'm trying to use Racer with Allegro Graph 5.1 running locally, but when I issue (open-triple-store "wn30"), I get an error saying "illegal operator". I tried specifying the :directory key as well, but it still gives me the error.

Racer is running under Allegro Lisp (mlisp) 9.0, while LRacer is running under SBCL 1.2.13.

This is the server output with -debug on:

(open-triple-store "wn30")

An error condition has been signalled (debug handler): Illegal operator in (open-triple-store wn30) — Reply to this email directly or view it on GitHub https://github.com/ha-mo-we/Racer/issues/8.

fcbr commented 9 years ago

Thanks for the clarification. I'm doing that, but I am finding the loading via owl-read-file too slow (almost 1h to load around 4M triples) so I was looking for faster alternatives. I'll close the issue.