Grasp binding to Virtuoso / DBpedia #12
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It also extends Grasp to other SPARQL endpoints across the LOD Cloud Knowledge Graph :) |
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Thank you for your investigation. We'll look into it. |
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Hello,
This pull request allows Grasp to work with a Virtuoso SPARQL endpoint and consequently with DBpedia. The changes address issue #11.
Without this change, Grasp issues CONSTRUCT queries to the SPARQL backend using POST with URL-encoded parameters and
Content-Type: application/x-www-form-urlencoded, as described in SPARQL 1.1 Protocol 2.1.2: query via POST with URL-encoded parameters. The patch modifies Grasp to POST CONSTRUCT queries usingContent-Type: application/sparql-queryas per SPARQL 1.1 Protocol 2.1.3: query via POST directly.Two simple GraphQL query examples have also been added to demonstrate Grasp querying DBpedia. Please see README_OPL.md for details.
Thanks,
Carl Blakeley
OpenLink Software