diff options
Diffstat (limited to 'rdflib/graph.py')
| -rw-r--r-- | rdflib/graph.py | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/rdflib/graph.py b/rdflib/graph.py index a00730ce..9868b097 100644 --- a/rdflib/graph.py +++ b/rdflib/graph.py @@ -954,18 +954,20 @@ class Graph(Node): but "xml", "n3", "turtle", "nt", "pretty-xml", "trix", "trig" and "nquads" are built in. """ - # if a base is set here, use it, else if it was set at graph creation time, use that (self.base) - if base is not None: - self.base = base + # if base is set for the graph use that, if not and a base is given here, use that + if self.base is not None: + base = self.base + else: + pass # i.e. base is set in this method serializer = plugin.get(format, Serializer)(self) if destination is None: stream = BytesIO() - serializer.serialize(stream, base=self.base, encoding=encoding, **args) + serializer.serialize(stream, base=base, encoding=encoding, **args) return stream.getvalue() if hasattr(destination, "write"): stream = destination - serializer.serialize(stream, base=self.base, encoding=encoding, **args) + serializer.serialize(stream, base=base, encoding=encoding, **args) else: location = destination scheme, netloc, path, params, _query, fragment = urlparse(location) @@ -976,7 +978,7 @@ class Graph(Node): return fd, name = tempfile.mkstemp() stream = os.fdopen(fd, "wb") - serializer.serialize(stream, base=self.base, encoding=encoding, **args) + serializer.serialize(stream, base=base, encoding=encoding, **args) stream.close() if hasattr(shutil, "move"): shutil.move(name, path) @@ -1657,13 +1659,13 @@ class Dataset(ConjunctiveGraph): .. versionadded:: 4.0 """ - def __init__(self, store="default", default_union=False): + def __init__(self, store="default", default_union=False, default_graph_base=None): super(Dataset, self).__init__(store=store, identifier=None) if not self.store.graph_aware: raise Exception("DataSet must be backed by a graph-aware store!") self.default_context = Graph( - store=self.store, identifier=DATASET_DEFAULT_GRAPH_ID + store=self.store, identifier=DATASET_DEFAULT_GRAPH_ID, base=default_graph_base ) self.default_union = default_union @@ -1674,7 +1676,7 @@ class Dataset(ConjunctiveGraph): ) return pattern % self.store.__class__.__name__ - def graph(self, identifier=None): + def graph(self, identifier=None, base=None): if identifier is None: from rdflib.term import rdflib_skolem_genid @@ -1684,6 +1686,7 @@ class Dataset(ConjunctiveGraph): identifier = BNode().skolemize() g = self._graph(identifier) + g.base = base self.store.add_graph(g) return g |