Source Code for Module oort.util.queries

 1  #======================================================================= 
 2  from rdflib import URIRef, RDF, RDFS 
 3  from oort.rdfview import RdfQuery, one, localized, i18n_dict 
 4  from oort.util.code import SlotStruct 
 5  #======================================================================= 
 6   
 7 -class Typed(RdfQuery): 
 8      rdfType = one(RDF.type) 
 9   
10 -class Labelled(RdfQuery): 
11      label = localized(RDFS) 
12   
13 -class Annotated(Labelled): 
14      comment = localized(RDFS) 
15   
16 -class Resource(Annotated, Typed): 
17      pass 
18   
19  #----------------------------------------------------------------------- 
20   
21 -class HasLabel(RdfQuery): 
22      label = localized(RDFS.RDFSNS) 
23   
24 -def make_label_query(uriBase, *uriTails): 
25      def labels(graph, lang, resource, **kwargs): 
26          labelBase = uriBase + "%s" 
27          class Labels(SlotStruct): 
28              __slots__ = uriTails 
29          return Labels( 
30                  *[HasLabel(graph, lang, URIRef(labelBase % tail)).label 
31                          for tail in Labels.__slots__] ) 
32      return labels 
33   
34 -class Lang(RdfQuery): 
35      value = one(RDF.RDFNS) 
36      label = i18n_dict(RDFS.RDFSNS) 
37