def add(identifier, annotation):
# parse id (allow annotations of an ARK or part of an ARK)
# push this off till next phase and require all assertions
# to be at the object rather than file level
pass
# make sure id exists
if not identity.exists(identifier):
return False
annotations = storage.get_or_create_file(identifier, "about.nt")
# get_or_create annotations file from storage
# hardcode this filename to about.ttl?
# block out b.c. RDF lib was to sloooow
# #annotations = storage.get_or_create_file(identifier, "about.n3")
#
# # instantiate a graph
# g = rdflib.ConjunctiveGraph()
#
# if annotations:
# # pull existing annotations into in-memory rdf graph
# g.parse(StringIO.StringIO(annotations), format="n3")
#
# # assume client sends list of strings/tuples (KLUDGE)
# for assertion in annotation:
# ns = rdflib.Namespace(assertion[1][1])
# ns_label = assertion[1][0]
# triple = (rdflib.URIRef(assertion[0]),
# ns[assertion[1][2]],
# rdflib.Literal(assertion[2]))
#
# # attach annotation to annotations file
# g.bind(ns_label, ns)
# g.add(triple)
#
# # write annotation to central datastore
# # push this off till future iteration
# __rdfstore_write(triple, ns_label, ns)
# temp filx until we get rdf store working better
if not annotations:
annotations = ""
for assertion in annotation:
trip = '<%s> <%s> "%s" .\n' % (assertion[0], assertion[1], assertion[2])
RDFMask().create_mask(assertion[0], os.path.basename(assertion[1]), assertion[2])
annotations += trip
# validate annotations (don't write garbage)
# maybe rdflib is doing this for us in g.parse & g.add?
pass
# write annotations file using storage service
# this should ask storage to up the repo version
# storage.put_file(identifier, "about.n3", g.serialize(format="n3"))
storage.put_file(identifier, "about.nt", annotations)
return True
def new_annotation_file(p):
# create a new set of annotations to store in about.nt
trips = RDFMask.objects.filter(phile=p)
annotations = ""
for t in trips:
x = '<%s> <%s> "%s" .\n' % (t.phile.identifier, t.triple_predicate, t.triple_object)
annotations += x
# overwrite existing about.nt with new triples
# put_file, will update git
storage.put_file(trips[0].phile.identifier, "about.nt", annotations)
#repo = git.Repo(trips[0].phile.path)
#storage.commit_version(repo.index, "updated metadata " + key + "=>" + val)
return True
