def create(self, request, user_id):
# fix-up "self" user
if user_id.lower() == "self":
user_id = request.user.id
# can only create your own entries
if not request.user.is_superuser and int(user_id) != request.user.id:
return rc.FORBIDDEN
rdfType = RDF["type"]
rdfTypeStr = str(rdfType)
try:
body_obj = json.loads(request.body)
except:
return rc.BAD_REQUEST
# check for existance and determine class
data = body_obj.get("data", [])
classURI = data.get(rdfTypeStr)
if not classURI:
resp = rc.BAD_REQUEST
resp.write(" - missing required predicate: " + rdfTypeStr)
return resp
USER = Namespace(str(USER_GRAPH_URI).format(userId=user_id))
subjectId = uuid.uuid4().hex
# inject the new subject-id into the JSON
subject_uri = USER[subjectId]
body_obj["id"] = subject_uri
try:
rdfutils.update_from_json(
sparql_graphs_for_user(request.user), USER, COMMON_GRAPH_URI, subject_uri, body_obj
)
result = rdfutils.object_to_json(sparql_graphs_for_user(request.user), COMMON_GRAPH_URI, USER, subject_uri)
except Exception, e:
print "Error creating new entry: " + e
raise
def update(self, request, user_id, entry_id):
# fix-up "self" user
if user_id.lower() == "self":
user_id = request.user.id
# can only update your own entries
if not request.user.is_superuser and int(user_id) != request.user.id:
return rc.FORBIDDEN
try:
body_obj = json.loads(request.body)
except:
resp = rc.BAD_REQUEST
resp.write(". Error parsing JSON")
return resp
if not body_obj.get("id"):
resp = rc.BAD_REQUEST
resp.write(". Missing required 'id' property")
return resp
if body_obj["id"] != entry_id:
resp = rc.BAD_REQUEST
resp.write(". Arguments don't match payload")
return resp
try:
USER = Namespace(str(USER_GRAPH_URI).format(userId=user_id))
# inject id into JSON
entry_uri = body_obj["id"]
rdfutils.update_from_json(sparql_graphs_for_user(request.user), USER, COMMON_GRAPH_URI, entry_uri, body_obj)
result = rdfutils.object_to_json(sparql_graphs_for_user(request.user), COMMON_GRAPH_URI, USER, entry_uri)
except Exception, e:
raise e
def read(self, request, user_id, subject_id=None):
# fix-up "self" user
if user_id.lower() == 'self':
user_id = request.user.id
# can only view your own data unless you're a superuser
if not request.user.is_superuser and int(user_id) != request.user.id:
return rc.FORBIDDEN
try:
USER = Namespace(str(USER_GRAPH_URI).format(userId=user_id))
result = None
if subject_id:
result = rdfutils.object_to_json(sparql_graphs_for_user(request.user), COMMON_GRAPH_URI, USER, subject_id)
else:
# check for filter criteria; if none exists default to all items
root_type_uri = None
if 'filter' in request.GET:
root_type_uri = request.GET['filter']
rq_tmpl = '''
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX : <{ug}>
SELECT ?s ?class ?title ?description
{{
GRAPH ?g {{
{{
<{type}> rdfs:label ?classLabel .
BIND (<{type}> AS ?class)
}}
UNION
{{
?class rdfs:subClassOf+ <{type}> .
?class rdfs:label ?classLabel .
}}
?class rdfs:isDefinedBy 'catalogit' .
?s rdf:type ?class .
OPTIONAL {{ ?s dc:title ?title }}
OPTIONAL {{ ?s dc:description ?description }}
}}
FILTER (?g IN ({graphs}))
}}
ORDER BY ?class ?title'''
rq = rq_tmpl.format(graphs=sparql_graphs_for_user(request.user), type=root_type_uri, ug=USER)
else:
root_type_uri = SCHEMA['Entry']
rq_tmpl = '''
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX : <{ug}>
SELECT ?s ?class ?title ?description
{{
GRAPH ?g {{
?class rdfs:label ?classLabel .
?class rdfs:isDefinedBy 'catalogit' .
?s rdf:type ?class .
OPTIONAL {{ ?s dc:title ?title }}
OPTIONAL {{ ?s dc:description ?description }}
}}
FILTER (?g IN ({graphs}))
}}
ORDER BY ?class ?title'''
rq = rq_tmpl.format(graphs=sparql_graphs_for_user(request.user), type=root_type_uri, ug=USER)
result = [{'id': t['s']['value'],
'data': {
str(RDF['type']): t['class']['value'],
'title': t['title']['value'] if 'title' in t else None,
'description': t['description']['value'] if 'description' in t else None
}} for t in sparql_query(rq)["results"]["bindings"]]
except Exception, e:
raise e
def read(self, request, user_id, entry_id=None):
# fix-up "self" user
if user_id.lower() == "self":
user_id = request.user.id
# can only view your own data unless you're a superuser
if not request.user.is_superuser and int(user_id) != request.user.id:
return rc.FORBIDDEN
try:
USER = Namespace(str(USER_GRAPH_URI).format(userId=user_id))
DC = Namespace("http://purl.org/dc/elements/1.1/")
result = None
if entry_id:
result = rdfutils.object_to_json(sparql_graphs_for_user(request.user), COMMON_GRAPH_URI, USER, entry_id)
else:
# check for filter criteria; if none exists default to all items
root_type_uri = None
if "filter" in request.GET:
root_type_uri = SCHEMA[request.GET["filter"]]
else:
root_type_uri = SCHEMA["Entry"]
rq_tmpl = """
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX common: <{cg}>
PREFIX : <{ug}>
SELECT ?s ?class ?createTime ?title ?description ?acquirePrice ?thumbnailURL ?classLabel
FROM NAMED :
{graphs}
WHERE {{
{{
<{type}> rdfs:label ?classLabel .
BIND (<{type}> AS ?class)
}}
UNION
{{
?class rdfs:subClassOf+ <{type}> .
?class rdfs:label ?classLabel .
}}
GRAPH : {{
?s rdf:type ?class .
?s common:createTime ?createTime .
OPTIONAL {{ ?s dc:title ?title }}
OPTIONAL {{ ?s dc:description ?description }}
OPTIONAL {{ ?s common:acquirePrice ?acquirePrice }}
OPTIONAL {{
# get the thumbnail image for the first StillImage media object
?s common:media ?media .
?media ?seq_index ?media_item .
?media_item rdf:type common:StillImage .
?media_item common:images ?media_item_seq .
?media_item_seq ?media_item_seq_index ?media_item_instance .
?media_item_instance common:stillImageType "thumbnail" .
?media_item_instance common:stillImageURL ?thumbnailURL .
}}
}}
}}
ORDER BY DESC(?createTime)
"""
rq = rq_tmpl.format(
graphs=sparql_froms_for_user(request.user), type=root_type_uri, ug=USER, cg=COMMON_GRAPH_URI
)
result = [
{
"id": t["s"]["value"],
"graph": USER,
"data": {
str(RDF["type"]): t["class"]["value"],
str(SCHEMA["type-label"]): t["classLabel"]["value"],
str(SCHEMA["createTime"]): calendar.timegm(
dateutil.parser.parse(t["createTime"]["value"]).timetuple()
),
str(DC["title"]): t["title"]["value"] if "title" in t else None,
str(DC["description"]): t["description"]["value"] if "description" in t else None,
str(SCHEMA["acquirePrice"]): t["acquirePrice"]["value"] if "acquirePrice" in t else None,
str(SCHEMA["stillImageURL"]): t["thumbnailURL"]["value"] if "thumbnailURL" in t else None,
},
"schema": None,
}
for t in sparql_query(rq)["results"]["bindings"]
]
except Exception, e:
raise e
ug_url=str(USER),
subject_uuid=subject_uuid,
geo_long=0,
geo_lat=0,
original_image_url=image.original.url,
original_image_width=image.original.width,
original_image_height=image.original.height,
thumbnail_image_url=image.thumbnail.url,
thumbnail_image_width=image.thumbnail.width,
thumbnail_image_height=image.thumbnail.height)
sparql_update(ru)
json = None
try:
json = rdfutils.object_to_json(sparql_graphs_for_user(request.user), COMMON_GRAPH_URI, str(USER), USER[subject_uuid])
except Exception, e:
print e
raise e
return json;
def update(self, request, user_id, entry_id, image_id):
# fix-up "self" user
if user_id.lower() == 'self':
user_id = request.user.id
try:
#body_obj = json.loads(request.body)
