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annotate service/reasoning/rdflibtrig.py @ 919:6ee2a90fc816

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bugs in async http client. move trig helpers to rdflibtrig, which can work with rdflib 4 Ignore-this: 81dc30256f5d2658e53fce60abea66db darcs-hash:20130910073852-312f9-f863b729e4c75f160d0740ae9038b5fab084b86b
author drewp <drewp@bigasterisk.com>
date Tue, 10 Sep 2013 00:38:52 -0700
parents
children 7179284779fd
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919
6ee2a90fc816 bugs in async http client. move trig helpers to rdflibtrig, which can work with rdflib 4
drewp <drewp@bigasterisk.com>
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1 import re, time
6ee2a90fc816 bugs in async http client. move trig helpers to rdflibtrig, which can work with rdflib 4
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2 import restkit
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3 from rdflib import URIRef
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4 try:
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5 from rdflib import StringInputSource
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6 from rdflib.Graph import Graph
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7 except ImportError:
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8 from rdflib.parser import StringInputSource
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9 from rdflib import Graph
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10
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11 def parseTrig(trig):
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12 """
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13 yields quads
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14 """
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15 m = re.match(r"<([^>]+)> \{(.*)\}\s*$", trig, re.DOTALL)
6ee2a90fc816 bugs in async http client. move trig helpers to rdflibtrig, which can work with rdflib 4
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16 if m is None:
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17 raise NotImplementedError("trig format was too tricky: %r..." % trig[:200])
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18
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19 ctx = URIRef(m.group(1))
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20 n3 = m.group(2)
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21 g = Graph()
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22 g.parse(StringInputSource(n3), format="n3")
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23 for stmt in g:
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24 yield stmt + (ctx,)
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25
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26
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27 def addTrig(graph, url):
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28 t1 = time.time()
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29 trig = restkit.request(url).body_string()
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30 fetchTime = time.time() - t1
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31 graph.addN(parseTrig(trig))
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32 return fetchTime