def create_TD_from(td_uri, node_map):
td_uri = URIRef(td_uri)
if td_uri in node_map:
return node_map[td_uri]
log.debug('Creating TD for {}...'.format(td_uri))
th_uri = get_td_thing(td_uri)
g = R.pull(th_uri, cache=True, infer=False, expire=300)
g.__iadd__(R.pull(td_uri, cache=True, infer=False, expire=300))
return TD.from_graph(g, node=URIRef(td_uri), node_map=node_map)
def build_component(id, node_map=None):
if node_map is None:
node_map = {}
uri = URIRef(id)
suc_tds = []
try:
matching_td = get_matching_TD(uri, node_map)
network = VTED.network
if not is_root(id):
roots = filter(lambda (th, td): th and td, VTED.roots)
for th_uri, td_uri in roots:
root = create_TD_from(td_uri, node_map=node_map)
try:
root_paths = nx.all_simple_paths(network, root.id,
matching_td.id)
for root_path in root_paths:
root_path = root_path[1:]
suc_tds = []
for suc_td_id in root_path:
suc_td = create_TD_from(get_td_node(suc_td_id),
node_map=node_map)
if suc_td not in suc_tds:
suc_tds.append(suc_td)
yield root, suc_tds
except nx.NetworkXNoPath:
pass
except nx.NodeNotFound:
pass
else:
yield matching_td, suc_tds
except IndexError:
graph = R.pull(uri)
resource = Resource.from_graph(graph, uri, node_map=node_map)
yield resource, []
def get_thing(id):
try:
th_node = get_th_node(id)
g = R.pull(th_node, cache=True, infer=False, expire=300)
for prefix, ns in R.fountain.prefixes.items():
g.bind(prefix, ns)
if not list(g.objects(th_node, CORE.describedBy)):
td_node = get_td_node(id)
g.add((th_node, CORE.describedBy, td_node))
th_types = list(g.objects(URIRef(th_node), RDF.type))
th_type = th_types.pop() if th_types else None
format = TURTLE if request_wants_turtle() else JSONLD
ttl = serialize_graph(g, format, frame=th_type)
own_base = unicode(request.url_root)
ttl = ttl.decode('utf-8').replace(REPOSITORY_BASE + u'/', own_base)
response = make_response(ttl)
response.headers['Content-Type'] = 'text/turtle'
return response
except IndexError:
pass
response = make_response()
response.status_code = 404
return response
def get_td(id):
try:
td_node = get_td_node(id)
g = R.pull(td_node, cache=True, infer=False, expire=300)
for ns, uri in R.fountain.prefixes.items():
g.bind(ns, uri)
format = TURTLE if request_wants_turtle() else JSONLD
ttl = serialize_graph(g, format, frame=CORE.ThingDescription)
own_base = unicode(request.url_root)
ttl = ttl.decode('utf-8').replace(REPOSITORY_BASE + u'/', own_base)
response = make_response(ttl)
response.headers['Content-Type'] = 'text/turtle'
return response
except IndexError:
pass
response = make_response()
response.status_code = 404
return response
def wrapper(uri):
g = R.pull(uri, cache=True, infer=False, expire=300)
if not g:
g = request_loader(uri)
return g
