inverted precedence of base: graph wins over adding base to serialize(). Added RDF/XML, TriX & 1/2 TriG (incomplete)issue_1003

1 files changed, 7 insertions, 3 deletions

diff --git a/rdflib/plugins/serializers/rdfxml.py b/rdflib/plugins/serializers/rdfxml.py
index 631c8fe0..0da1cccd 100644
--- a/rdflib/plugins/serializers/rdfxml.py
+++ b/rdflib/plugins/serializers/rdfxml.py
@@ -46,7 +46,11 @@ class XMLSerializer(Serializer):
             yield prefix, namespace
 
     def serialize(self, stream, base=None, encoding=None, **args):
-        self.base = base
+        # if base is set for the graph use that, if not and a base is given here, use that
+        if self.store.base is not None:
+            self.base = self.store.base
+        else:
+            self.base = base
         self.__stream = stream
         self.__serialized = {}
         encoding = self.encoding
@@ -60,8 +64,8 @@ class XMLSerializer(Serializer):
         write('<rdf:RDF\n')
 
         # If provided, write xml:base attribute for the RDF
-        if "xml_base" in args:
-            write('   xml:base="%s"\n' % args['xml_base'])
+        if self.base:
+            write('   xml:base="%s"\n' % self.base)
         # TODO:
         # assert(
         #    namespaces["http://www.w3.org/1999/02/22-rdf-syntax-ns#"]=='rdf')