[rdf] Use namespace for graph binding namespace

cubicweb_blog/entities.py

@@ -24,10 +24,11 @@ __docformat__ = "restructuredtext en"
 class CWUserRDFAdapter(_CWUserRDFAdapter):
     def triples(self):
         yield from super().triples()
+        SIOC = self._use_namespace("sioc")
         uri = URIRef(self.uri)
         blog_entries = self._cw.find("BlogEntry", created_by=self.entity)
         for entry in blog_entries.entities():
-            yield (uri, NAMESPACES["sioc"].creator_of, URIRef(entry.cwuri))
+            yield (uri, SIOC.creator_of, URIRef(entry.cwuri))
 
 
 class BlogRDFAdapter(EntityRDFAdapter):
@@ -35,9 +36,9 @@ class BlogRDFAdapter(EntityRDFAdapter):
     __select__ = is_instance("Blog")
 
     def triples(self):
-        SIOC = NAMESPACES["sioc"]
-        RDF = NAMESPACES["rdf"]
-        DCTERMS = NAMESPACES["dcterms"]
+        SIOC = self._use_namespace("sioc")
+        RDF = self._use_namespace("rdf")
+        DCTERMS = self._use_namespace("dcterms")
         uri = URIRef(self.uri)
         yield (uri, RDF.type, SIOC.Weblog)
         yield (uri, DCTERMS.title, Literal(self.entity.dc_title()))
@@ -57,9 +58,9 @@ class BlogEntryRDFAdapter(EntityRDFAdapter):
     __select__ = is_instance("BlogEntry")
 
     def triples(self):
-        SIOC = NAMESPACES["sioc"]
-        RDF = NAMESPACES["rdf"]
-        DCTERMS = NAMESPACES["dcterms"]
+        SIOC = self._use_namespace("sioc")
+        RDF = self._use_namespace("rdf")
+        DCTERMS = self._use_namespace("dcterms")
         uri = URIRef(self.uri)
         yield (uri, RDF.type, SIOC.BlogPost)
         yield (uri, DCTERMS.title, Literal(self.entity.dc_title()))
@@ -78,8 +79,8 @@ class MicroBlogRDFAdapter(BlogRDFAdapter):
 
     def triples(self):
         yield from super().triples()
-        SIOC = NAMESPACES["sioc"]
-        RDF = NAMESPACES["rdf"]
+        SIOC = self._use_namespace("sioc")
+        RDF = self._use_namespace("rdf")
         uri = URIRef(self.uri)
         yield(uri, RDF.type, SIOC.Microblog)
 
@@ -90,8 +91,8 @@ class MicroBlogEntryRDFAdapter(BlogEntryRDFAdapter):
 
     def triples(self):
         yield from super().triples()
-        SIOC = NAMESPACES["sioc"]
-        RDF = NAMESPACES["rdf"]
+        SIOC = self._use_namespace("sioc")
+        RDF = self._use_namespace("rdf")
         uri = URIRef(self.uri)
         yield (uri, RDF.type, SIOC.MicroblogPost)