|
1
|
|
|
# -*- coding: utf-8 -*- |
|
2
|
|
|
""" |
|
3
|
|
|
Module containing utility functions dealing with RDF used by Atramhasis. |
|
4
|
|
|
|
|
5
|
|
|
.. versionadded:: 0.6.0 |
|
6
|
|
|
""" |
|
7
|
|
|
|
|
8
|
|
|
from pyramid.settings import asbool |
|
9
|
|
|
|
|
10
|
|
|
from rdflib import Graph |
|
11
|
|
|
from rdflib.namespace import RDF, VOID, DCTERMS, FOAF, SKOS |
|
12
|
|
|
from rdflib.namespace import Namespace |
|
13
|
|
|
from rdflib.term import URIRef, BNode, Literal |
|
14
|
|
|
|
|
15
|
|
|
from skosprovider_rdf.utils import _add_labels |
|
16
|
|
|
|
|
17
|
|
|
FORMATS = Namespace('http://www.w3.org/ns/formats/') |
|
18
|
|
|
SKOS_THES = Namespace('http://purl.org/iso25964/skos-thes#') |
|
19
|
|
|
HYDRA = Namespace('http://www.w3.org/ns/hydra/core#') |
|
20
|
|
|
|
|
21
|
|
|
|
|
22
|
|
|
def void_dumper(request, registry): |
|
23
|
|
|
''' |
|
24
|
|
|
Creates a void file with information about all void Datasets in this Atramhasis instance. |
|
25
|
|
|
|
|
26
|
|
|
:param pyramid.request.Request request: |
|
27
|
|
|
:param skosprovider.registry.Registry: |
|
28
|
|
|
''' |
|
29
|
|
|
providers = [ |
|
30
|
|
|
x for x in registry.get_providers() |
|
31
|
|
|
if not any([not_shown in x.get_metadata()['subject'] for not_shown in ['external']]) |
|
32
|
|
|
] |
|
33
|
|
|
graph = Graph() |
|
34
|
|
|
graph.namespace_manager.bind("void", VOID) |
|
35
|
|
|
graph.namespace_manager.bind("dcterms", DCTERMS) |
|
36
|
|
|
graph.namespace_manager.bind("foaf", FOAF) |
|
37
|
|
|
graph.namespace_manager.bind("skos", SKOS) |
|
38
|
|
|
graph.namespace_manager.bind("skos-thes", SKOS_THES) |
|
39
|
|
|
graph.namespace_manager.bind("hydra", HYDRA) |
|
40
|
|
|
duri = request.route_url('atramhasis.rdf_void_turtle_ext', _anchor='atramhasis') |
|
41
|
|
|
dataset = URIRef(duri) |
|
42
|
|
|
graph.add((dataset, RDF.type, VOID.Dataset)) |
|
43
|
|
|
graph.add((dataset, FOAF.homepage, URIRef(request.route_url('home')))) |
|
44
|
|
|
graph.add((dataset, VOID.vocabulary, URIRef(DCTERMS))) |
|
45
|
|
|
graph.add((dataset, VOID.vocabulary, URIRef(SKOS))) |
|
46
|
|
|
graph.add((dataset, VOID.vocabulary, URIRef(SKOS_THES))) |
|
47
|
|
|
ldf_enabled = asbool(request.registry.settings.get( |
|
48
|
|
|
'atramhasis.ldf.enabled', |
|
49
|
|
|
None |
|
50
|
|
|
)) |
|
51
|
|
|
ldf_baseurl = request.registry.settings.get( |
|
52
|
|
|
'atramhasis.ldf.baseurl', |
|
53
|
|
|
None |
|
54
|
|
|
) |
|
55
|
|
|
if ldf_enabled and ldf_baseurl: |
|
56
|
|
|
ldfurl = ldf_baseurl + '/composite{?s,p,o}' |
|
57
|
|
|
_add_ldf_server(graph, dataset, ldfurl) |
|
58
|
|
|
for p in providers: |
|
59
|
|
|
_add_provider(graph, p, dataset, request) |
|
60
|
|
|
return graph |
|
61
|
|
|
|
|
62
|
|
|
|
|
63
|
|
|
def _add_provider(graph, provider, dataseturi, request): |
|
64
|
|
|
''' |
|
65
|
|
|
:param rdflib.graph.Graph graph: Graph that will contain the Dataset. |
|
66
|
|
|
:param skosprovider.providers.VocabularyProvider provider: Provider to turn into a Dataset. |
|
67
|
|
|
:param rdflib.term.URIRef URIRef: URI of the main dataset this provider will be attached to. |
|
68
|
|
|
:param pyramid.request.Request request: |
|
69
|
|
|
:rtype: :class:`rdflib.graph.Graph` |
|
70
|
|
|
''' |
|
71
|
|
|
pid = provider.get_vocabulary_id() |
|
72
|
|
|
metadataset = provider.get_metadata().get('dataset', {}) |
|
73
|
|
|
duri = metadataset.get( |
|
74
|
|
|
'uri', |
|
75
|
|
|
request.route_url('atramhasis.rdf_void_turtle_ext', _anchor=pid) |
|
76
|
|
|
) |
|
77
|
|
|
pd = URIRef(duri) |
|
78
|
|
|
graph.add((pd, RDF.type, VOID.Dataset)) |
|
79
|
|
|
graph.add((dataseturi, VOID.subset, pd)) |
|
80
|
|
|
graph.add((pd, DCTERMS.identifier, Literal(pid))) |
|
81
|
|
|
graph.add((pd, VOID.rootResource, URIRef(provider.concept_scheme.uri))) |
|
82
|
|
|
graph.add((pd, FOAF.homepage, URIRef(request.route_url('conceptscheme', scheme_id=pid)))) |
|
83
|
|
|
_add_labels(graph, provider.concept_scheme, pd) |
|
84
|
|
|
_add_metadataset(graph, pd, metadataset) |
|
85
|
|
|
fmap = [ |
|
86
|
|
|
('rdf', FORMATS.RDF_XML, 'atramhasis.rdf_full_export_ext'), |
|
87
|
|
|
('ttl', FORMATS.Turtle, 'atramhasis.rdf_full_export_turtle_ext') |
|
88
|
|
|
] |
|
89
|
|
|
for f in fmap: |
|
90
|
|
|
graph.add((pd, VOID.feature, f[1])) |
|
91
|
|
|
dump_url = request.route_url(f[2], scheme_id=pid) |
|
92
|
|
|
graph.add((pd, VOID.dataDump, URIRef(dump_url))) |
|
93
|
|
|
|
|
94
|
|
|
ldf_enabled = asbool(request.registry.settings.get( |
|
95
|
|
|
'atramhasis.ldf.enabled', |
|
96
|
|
|
None |
|
97
|
|
|
)) |
|
98
|
|
|
ldf_baseurl = request.registry.settings.get( |
|
99
|
|
|
'atramhasis.ldf.baseurl', |
|
100
|
|
|
None |
|
101
|
|
|
) |
|
102
|
|
|
if ldf_enabled and ldf_baseurl: |
|
103
|
|
|
pid = provider.get_vocabulary_id() |
|
104
|
|
|
ldfurl = ldf_baseurl + '/' + pid + '{?s,p,o}' |
|
105
|
|
|
_add_ldf_server(graph, pd, ldfurl) |
|
106
|
|
|
return graph |
|
107
|
|
|
|
|
108
|
|
|
|
|
109
|
|
|
def _add_metadataset(graph, subject, metadataset): |
|
110
|
|
|
''' |
|
111
|
|
|
:param rdflib.graph.Graph graph: Graph that contains the Dataset. |
|
112
|
|
|
:param rdflib.term.URIRef subject: Uri of the Dataset. |
|
113
|
|
|
:param dict metadataset: Dictionary with metadata to add to the Dataset. |
|
114
|
|
|
:rtype: :class:`rdflib.graph.Graph` |
|
115
|
|
|
''' |
|
116
|
|
|
mapping = { |
|
117
|
|
|
'creator': { |
|
118
|
|
|
'predicate': DCTERMS.creator, |
|
119
|
|
|
'objecttype': URIRef |
|
120
|
|
|
}, |
|
121
|
|
|
'publisher': { |
|
122
|
|
|
'predicate': DCTERMS.publisher, |
|
123
|
|
|
'objecttype': URIRef |
|
124
|
|
|
}, |
|
125
|
|
|
'contributor': { |
|
126
|
|
|
'predicate': DCTERMS.contributor, |
|
127
|
|
|
'objecttype': URIRef |
|
128
|
|
|
}, |
|
129
|
|
|
'language': { |
|
130
|
|
|
'predicate': DCTERMS.language |
|
131
|
|
|
}, |
|
132
|
|
|
'date': { |
|
133
|
|
|
'predicte': DCTERMS.date |
|
134
|
|
|
}, |
|
135
|
|
|
'created': { |
|
136
|
|
|
'predicate': DCTERMS.created |
|
137
|
|
|
}, |
|
138
|
|
|
'issued': { |
|
139
|
|
|
'predicate': DCTERMS.issued |
|
140
|
|
|
}, |
|
141
|
|
|
'license': { |
|
142
|
|
|
'predicate': DCTERMS.license, |
|
143
|
|
|
'objecttype': URIRef |
|
144
|
|
|
} |
|
145
|
|
|
} |
|
146
|
|
|
|
|
147
|
|
|
for k, v in mapping.items(): |
|
148
|
|
|
if k in metadataset: |
|
149
|
|
|
if 'objecttype' in v: |
|
150
|
|
|
objecttype = v['objecttype'] |
|
151
|
|
|
else: |
|
152
|
|
|
objecttype = Literal |
|
153
|
|
|
for ko in metadataset[k]: |
|
154
|
|
|
o = objecttype(ko) |
|
155
|
|
|
graph.add((subject, v['predicate'], o)) |
|
156
|
|
|
return graph |
|
157
|
|
|
|
|
158
|
|
|
|
|
159
|
|
|
def _add_ldf_server(graph, dataseturi, ldfurl): |
|
160
|
|
|
''' |
|
161
|
|
|
:param rdflib.graph.Graph graph: Graph that contains the Dataset. |
|
162
|
|
|
:param rdflib.term.URIRef subject: Uri of the Dataset. |
|
163
|
|
|
:param str ldfurl: Url pointing to the ldf server. |
|
164
|
|
|
:rtype: :class:`rdflib.graph.Graph` |
|
165
|
|
|
''' |
|
166
|
|
|
ldf = BNode() |
|
167
|
|
|
graph.add((dataseturi, HYDRA.search, ldf)) |
|
168
|
|
|
graph.add((ldf, HYDRA.template, Literal(ldfurl))) |
|
169
|
|
|
s = BNode() |
|
170
|
|
|
graph.add((s, HYDRA.variable, Literal('s'))) |
|
171
|
|
|
graph.add((s, HYDRA.property, RDF.subject)) |
|
172
|
|
|
graph.add((ldf, HYDRA.mapping, s)) |
|
173
|
|
|
p = BNode() |
|
174
|
|
|
graph.add((p, HYDRA.variable, Literal('p'))) |
|
175
|
|
|
graph.add((p, HYDRA.property, RDF.predicate)) |
|
176
|
|
|
graph.add((ldf, HYDRA.mapping, p)) |
|
177
|
|
|
o = BNode() |
|
178
|
|
|
graph.add((o, HYDRA.variable, Literal('o'))) |
|
179
|
|
|
graph.add((o, HYDRA.property, RDF.object)) |
|
180
|
|
|
graph.add((ldf, HYDRA.mapping, o)) |
|
181
|
|
|
return graph |
|
182
|
|
|
|
OnroerendErfgoed /
atramhasis
