1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
import rdflib
from nose.exc import SkipTest
import unittest
class TestSerialization(unittest.TestCase):
def test_issue_248(self):
"""
Ed Summers Thu, 24 May 2007 12:21:17 -0700
As discussed with eikeon in #redfoot it appears that the n3 serializer
is ignoring the base option to Graph.serialize...example follows:
--
#!/usr/bin/env python
from rdflib.Graph import Graph
from rdflib.URIRef import URIRef
from rdflib import Literal, Namespace, RDF
graph = Graph()
DC = Namespace('http://purl.org/dc/terms/')
SKOS = Namespace('http://www.w3.org/2004/02/skos/core#')
LCCO = Namespace('http://loc.gov/catdir/cpso/lcco/')
graph.bind('dc', DC)
graph.bind('skos', SKOS)
graph.bind('lcco', LCCO)
concept = URIRef(LCCO['1'])
graph.add((concept, RDF.type, SKOS['Concept']))
graph.add((concept, SKOS['prefLabel'], Literal('Scrapbooks')))
graph.add((concept, DC['LCC'], Literal('AC999.0999 - AC999999.Z9999')))
print graph.serialize(format='n3', base=LCCO)
--
Which generates:
--
@prefix dc: <http://purl.org/dc/terms/>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix skos: <http://www.w3.org/2004/02/skos/core#>.
<http://loc.gov/catdir/cpso/lcco/1> a skos:Concept;
dc:LCC "AC999.0999 - AC999999.Z9999";
skos:prefLabel "Scrapbooks".
--
Notice
<http://loc.gov/catdir/cpso/lcco/1> a skos:Concept;
instead of:
<1> a skos:Concept;
//Ed
"""
graph = rdflib.Graph()
DC = rdflib.Namespace('http://purl.org/dc/terms/')
SKOS = rdflib.Namespace('http://www.w3.org/2004/02/skos/core#')
LCCO = rdflib.Namespace('http://loc.gov/catdir/cpso/lcco/')
graph.bind('dc', DC)
graph.bind('skos', SKOS)
graph.bind('lcco', LCCO)
concept = rdflib.URIRef(LCCO['1'])
graph.add(
(concept,
rdflib.RDF.type,
SKOS['Concept']))
graph.add(
(concept,
SKOS['prefLabel'],
rdflib.Literal('Scrapbooks')))
graph.add(
(concept,
DC['LCC'],
rdflib.Literal('AC999.0999 - AC999999.Z9999')))
sg = graph.serialize(format='n3', base=LCCO).decode('utf8')
# See issue 248
# Actual test should be the inverse of the below ...
self.assertTrue('<1> a skos:Concept ;' in sg, sg)
if __name__ == "__main__":
unittest.main()
|
