Richard Newman » holygoat.co.uk

Thu 16 Jun 2005

Nearly there

* (sparql :select :distinct t 
  :vars '(name mbox) 
  :from "http://www.holygoat.co.uk/foaf.rdf" 
  :where '(graph-pattern 
           (triple x !foaf:knows !rich:RichardNewman) 
           (triple x !foaf:name name) 
           (triple x !foaf:mbox_sha1sum mbox)))
<?xml version="1.0"?>
<sparql xmlns="http://www.w3.org/2001/sw/
DataAccess/rf1/result2">
  <head>
    <variable name="NAME" />
    <variable name="MBOX" />
  </head>
  <results>
    <result>
    <result>
      <binding name="NAME">
        <literal>Timothy Putnam</literal>
      </binding>
      <binding name="MBOX">
        <literal> ✂ </literal>
      </binding>
    </result>
    <result>
      <binding name="NAME">
        <literal>Matthew Fowler</literal>
      </binding>
      <binding name="MBOX">
        <literal> ✂ </literal>
      </binding>
    </result>
…

Well, I'm pleased, anyway! Basic queries (no optionals, union, &c. yet), SPARQL XML result format output, remote fetching, s-expression syntax that should be easy to generate from the SQL-like syntax, fully-commented code, and even untested implementations of ASK, DESCRIBE, and CONSTRUCT. Two days' work, and 450 lines. When I'm done I'll throw an Araneida frontend on, et voila: a SPARQL endpoint for Lisp.

This post might not look perfect in NetNewsWire. Indeed, thanks to pre's lack of wrapping (and thus my hard-wrapping) it probably won't look any good anywhere. Sue me.

Posted at 2005-06-16 10:50:46 by Richard • Link to Nearly there
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Little boxes, all the same

A nice little poem about what we do, via ziggy.

Posted at 2005-06-16 02:45:38 by Richard • Link to Little boxes, all …
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