def test_datastream_list(self):
datastreams = Fedora.get_datastream_list('changeme:9')
assert len(datastreams) == 5
assert datastreams == ['DC', 'annotation', 'RELS-EXT', 'specifictarget', 'selector']
def serialize(cls, pids, format=None, check_object=None):
"""
Get list of datastreams from an array of PIDs
With those, get all rdf:Description elements and output
in the format specified.
Format options are:
- rdf/xml or xml (default)
- rdf/json or json
- turtle or ttl
- nt
- n3
Optional "check_object" parameter will check the object's
content model before serializing to make sure it is equal to the
default content type for annotate objects set in the config.
"""
if format is None:
format = "xml"
if check_object is None:
check_object = True
xmls = []
for pid in pids:
# Make sure we only serialize Annotation objects
if check_object:
try:
content_models = Fedora.get_content_models(pid)
except:
raise AnnotationError("PID %s not found in Fedora" % pid)
oac_model = "info:fedora/%s" % app.config.get("DEFUALT_ANNOTATION_CONTENT_MODEL")
if oac_model not in content_models:
continue
datastreams = Fedora.get_datastream_list(pid)
if not isinstance(datastreams, list):
# There was an error with this PID, skip it
continue
for d in datastreams:
[xmls.append(x) for x in Foxml.get_rdf_descriptions(Fedora.get_datastream(pid, d))]
rdf_xml_string = Foxml.get_rdf_string_from_descriptions(list(xmls))
out = Graph()
out.parse(data=rdf_xml_string, format="application/rdf+xml")
if format.lower() == "rdf/xml" or format.lower() == "xml":
return out.serialize(format="xml"), "application/rdf+xml"
if format.lower() == "n3":
return out.serialize(format="n3"), "text/rdf+n3"
elif format.lower() == "turtle" or format.lower() == "ttl":
return out.serialize(format="turtle"), "text/turtle"
elif format.lower() == "nt":
return out.serialize(format="nt"), "text/nt"
elif format.lower() == "rdf/json" or format.lower() == "json":
return out.serialize(format="rdf-json"), "application/rdf+json"
else:
raise AnnotationError("Serialization format '%s' is not supported.")
