def _get_inline_preview(self, link, store=None):
"""Query RDFstore for graph and convert selected fields to JSON dictionary. """
graph = None
try:
if settings.RDF_USE_LOCAL_GRAPH:
record = RDFRecord(source_uri=link)
if record.exists():
graph = record.get_graph()
else:
raise UnknownGraph("unable to find {}".format(link))
else:
if not store:
store = get_rdfstore()
store = store.get_graph_store
named_graph = "{}/graph".format(link.rstrip('/'))
graph = store.get(named_graph=named_graph, as_graph=True)
except UnknownGraph as ug:
logger.warn("Unable to find Graph for: {}".format(link))
return None
preview_fields = settings.EDM_API_INLINE_PREVIEW
preview_predicates = [URIRef(pred) for pred in preview_fields.keys()]
inline_dict = {}
for pred, obj in graph.predicate_objects():
if pred in preview_predicates:
inline_dict[preview_fields[str(pred)]] = str(obj)
if 'delving_hubId' in preview_fields.values():
hub_id, spec = self.get_hub_id()
inline_dict['delving_hubId'] = hub_id
return inline_dict
def test__get_rdf_base_url__return_base_url_from_settings(settings):
settings.RDF_BASE_URL = "http://testserver"
base_url = RDFRecord.get_rdf_base_url()
assert base_url
assert base_url == "testserver"
base_url = RDFRecord.get_rdf_base_url(prepend_scheme=True, scheme="https")
assert base_url
assert base_url == "https://testserver"
def get_context_data(self, **kwargs):
context = super(NaveDocumentTemplateView, self).get_context_data(**kwargs)
absolute_uri = self.request.build_absolute_uri()
target_uri = RDFRecord.get_internal_rdf_base_uri(absolute_uri)
if "detail/foldout/" in target_uri:
slug = self.kwargs.get('slug')
record = ElasticSearchRDFRecord(hub_id=slug)
graph = record.get_graph_by_id(self.kwargs.get('slug'))
if graph is not None:
target_uri = record.source_uri
else:
logger.warn("Unable to find source_uri for slug: {}".format(slug))
else:
target_uri = RDFRecord.get_internal_rdf_base_uri(absolute_uri)
record = ElasticSearchRDFRecord(hub_id=self.kwargs.get('slug'))
graph = record.get_graph_by_source_uri(target_uri)
if graph is None:
raise UnknownGraph("URI {} is not known in our graph store".format(target_uri))
if "/resource/cache/" in target_uri:
target_uri = target_uri.rstrip('/')
cache_resource = CacheResource.objects.filter(document_uri=target_uri)
if cache_resource.exists():
graph = cache_resource.first().get_graph()
elif settings.RDF_USE_LOCAL_GRAPH:
mode = self.request.REQUEST.get('mode', 'default')
acceptance = True if mode == 'acceptance' else False
context['acceptance'] = acceptance
elif '/resource/aggregation' in target_uri:
target_named_graph = "{}/graph".format(target_uri.rstrip('/'))
graph, nr_levels = RDFModel.get_context_graph(store=rdfstore.get_rdfstore(), named_graph=target_named_graph)
else:
graph, nr_levels = RDFModel.get_context_graph(
store=rdfstore.get_rdfstore(),
target_uri=target_uri
)
# todo: remove: should no longer be necessary with the addition of common.middleware.ForceLangMiddleware
language = self.request.GET.get('lang', None)
if language:
activate(language)
bindings = GraphBindings(
about_uri=target_uri,
graph=graph,
excluded_properties=settings.RDF_EXCLUDED_PROPERTIES
)
context['resources'] = bindings
context['absolute_uri'] = RDFRecord.get_external_rdf_url(target_uri, self.request)
for rdf_type in bindings.get_about_resource().get_types():
search_label = rdf_type.search_label.lower()
content_template = settings.RDF_CONTENT_FOLDOUTS.get(search_label)
if content_template:
self.template_name = content_template
break
context['points'] = RDFModel.get_geo_points(graph)
return context
def _process_action(self, action):
try:
self.spec = action["dataset"]
process_verb = action["action"]
record = None
if process_verb in ["clear_orphans"]:
purge_date = action.get("modification_date")
if purge_date:
orphans_removed = RDFRecord.remove_orphans(spec=self.spec, timestamp=purge_date)
logger.info("Deleted {} orphans for {} before {}".format(orphans_removed, self.spec, purge_date))
elif process_verb in ["disable_index"]:
RDFRecord.delete_from_index(self.spec)
logger.info("Deleted dataset {} from index. ".format(self.spec))
elif process_verb in ["drop_dataset"]:
RDFRecord.delete_from_index(self.spec)
DataSet.objects.filter(spec=self.spec).delete()
logger.info("Deleted dataset {} from index. ".format(self.spec))
else:
record_graph_uri = action["graphUri"]
graph_ntriples = action["graph"]
acceptance_mode = action.get("acceptanceMode", "false")
acceptance = True if acceptance_mode is not None and acceptance_mode.lower() in ["true"] else False
content_hash = action.get("contentHash", None)
from lod.utils.resolver import ElasticSearchRDFRecord
record = ElasticSearchRDFRecord(spec=self.spec, rdf_string=graph_ntriples)
try:
rdf_format = record.DEFAULT_RDF_FORMAT if "<rdf:RDF" not in graph_ntriples else "xml"
record.from_rdf_string(
rdf_string=graph_ntriples, named_graph=record_graph_uri, input_format=rdf_format
)
except ParseError as e:
self.rdf_errors.append((e, action))
logger.error(e, action)
return None
self.records_stored += 1
self.es_actions[(record.hub_id, content_hash)] = record.create_es_action(
action=process_verb,
store=self.store,
context=True,
flat=True,
exclude_fields=None,
acceptance=acceptance,
doc_type="void_edmrecord",
record_type="mdr",
content_hash=content_hash,
)
if settings.RDF_STORE_TRIPLES:
self.sparql_update_queries[(record.hub_id, content_hash)] = record.create_sparql_update_query(
acceptance=acceptance
)
return record
except KeyError as ke:
self.json_errors.append((ke, action))
self.records_with_errors += 1
return None
def identify(self):
"""Return the OAI-PMH Identify request.
See http://www.openarchives.org/OAI/openarchivesprotocol.html#Identify
"""
self.template_name = 'oaipmh/identify.xml'
identify_data = {
'name': 'OAI-PMH repository for {}'.format(settings.SITE_NAME),
# perhaps an oai_admins method with default logic settings.admins?
'admins': (email for name, email in settings.ADMINS),
'earliest_date': '1990-02-01T12:00:00Z', # placeholder
# should probably be a class variable/configuration
'deleted': 'no', # no, transient, persistent (?)
# class-level variable/configuration (may affect templates also)
'granularity': 'YYYY-MM-DDThh:mm:ssZ', # or YYYY-MM-DD
# class-level config?
'compression': 'deflate', # gzip? - optional
# description - optional
# (place-holder values from OAI docs example)
'identifier_scheme': 'oai',
'repository_identifier': "{}".format(RDFRecord.get_rdf_base_url(prepend_scheme=True)),
'identifier_delimiter': '_',
'sample_identifier': '{}_spec_localId'.format(settings.SITE_NAME)
}
return self.render_to_response(identify_data)
def test_store_remote_cached_resource(self):
test_uri = "http://nl.dbpedia.org/resource/Ton_Smits"
resource = CacheResource.get_remote_lod_resource(test_uri)
store = rdfstore._rdfstore_test
assert len(resource) > 0
store._clear_all()
graph_store = store.get_graph_store
cache_graph = "http://{}/resource/cache#graph".format(RDFRecord.get_rdf_base_url())
self.assertFalse(
store.ask(
query="where {{<{}> ?p ?o}}".format(test_uri)
))
response = CacheResource.store_remote_cached_resource(resource, graph_store, cache_graph)
assert response is not None
assert response
self.assertTrue(
store.ask(
query="where {{<{}> ?p ?o}}".format(test_uri)
)
)
# cacheUrl is no longer being added
self.assertFalse(
store.ask(
query="where {{<{}> <http://schemas.delving.org/nave/terms/cacheUrl> ?o}}".format(
test_uri)
)
)
def generate_proxyfield_uri(self, label, language=None):
label = label.replace(' ', '_')
if language:
label = "{}/{}".format(language, label)
return "{}/resource/dataset/{}/{}".format(
RDFRecord.get_rdf_base_url(prepend_scheme=True),
self.spec,
label
)
def get(self, request, *args, **kwargs):
target_uri = os.path.splitext(request.build_absolute_uri())[0].replace('/data/', '/resource/')
if not self.request.path.startswith("/data"):
target_uri = re.sub('/[a-z]{2}/resource/', '/resource/', target_uri, count=1)
if target_uri.endswith('graph'):
target_uri = re.sub("/graph", "", target_uri)
extension_ = self.kwargs.get('extension')
rdf_format = mime_to_extension(get_lod_mime_type(extension_, self.request))
if rdf_format == "rdf":
rdf_format = "xml"
resolved_uri = RDFRecord.get_internal_rdf_base_uri(target_uri)
if "/resource/cache/" in target_uri:
# old lookup rdfstore.get_rdfstore().get_cached_source_uri(target_uri)
target_uri = target_uri.split('/resource/cache/')[-1]
if 'geonames.org' in target_uri:
target_uri = '{}/'.format(target_uri)
if CacheResource.objects.filter(document_uri=target_uri).exists():
cache_object = CacheResource.objects.filter(document_uri=target_uri).first()
content = cache_object.get_graph().serialize(format=rdf_format)
else:
raise UnknownGraph("URI {} is not known in our graph store".format(target_uri))
elif settings.RDF_USE_LOCAL_GRAPH:
mode = self.request.REQUEST.get('mode', 'default')
acceptance = True if mode == 'acceptance' else False
local_object = ElasticSearchRDFRecord(source_uri=resolved_uri)
local_object.get_graph_by_source_uri(uri=resolved_uri)
if not local_object.exists():
# todo: temporary work around for EDMRecords not saved with subjects
logger.warn("Unable to find graph for: {}".format(resolved_uri))
raise UnknownGraph("URI {} is not known in our graph store".format(resolved_uri))
mode = self.get_mode(request)
if mode in ['context', 'api', 'api-flat']:
# get_graph(with_mappings=True, include_mapping_target=True, acceptance=acceptance)
content = local_object.get_context_graph(with_mappings=True, include_mapping_target=True)
if mode in ['api', 'api-flat']:
bindings = GraphBindings(about_uri=resolved_uri, graph=content)
index_doc = bindings.to_index_doc() if mode == 'api' else bindings.to_flat_index_doc()
content = json.dumps(index_doc)
rdf_format = 'json-ld'
else:
content = content.serialize(format=rdf_format)
else:
content = local_object.get_graph()
content = content.serialize(format=rdf_format)
elif self.store.ask(uri=resolved_uri):
target_uri = resolved_uri
content = self.get_content(target_uri, rdf_format, request)
return HttpResponse(
content,
content_type='{}; charset=utf8'.format(result_extension_to_mime(rdf_format))
)
def get_resolved_uri(context, uri):
"""Returns resolved uri, or Cached URI."""
request = context['request']
request_base = urlparse(request.build_absolute_uri()).netloc
rdf_base = urlparse(uri).netloc
if request_base in settings.RDF_ROUTED_ENTRY_POINTS and rdf_base in RDFRecord.get_rdf_base_url():
resolved_uri = uri.replace(rdf_base, request_base)
elif rdf_base not in request_base:
resolved_uri = get_cache_url(uri)
else:
return uri
return resolved_uri
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.base_uri = r'{}/resource'.format(RDFRecord.get_rdf_base_url(prepend_scheme=True))
if self.get_namespace_prefix():
namespace_string = 'http://{}/resource/ns/{}/'.format(
RDF_BASE_URL.replace("http://", ""),
self.get_namespace_prefix()
)
self.ns = Namespace(namespace_string)
self.rdf_type_base = Namespace("{}/{}/".format(self.base_uri, self.get_rdf_type().lower()))
if namespace_string not in settings.RDF_SUPPORTED_NAMESPACES:
namespace_manager.bind(self.get_namespace_prefix(), self.ns)
self.ns_dict = dict(list(namespace_manager.namespaces()))
self.graph = None
def process_narthex_file(self, spec, store=None, acceptance=False, path=None, console=False):
start = datetime.now()
if not store:
store = rdfstore.get_rdfstore()
if not path:
processed_fname = self.get_narthex_processed_fname()
else:
processed_fname = path
print("started processing {} for dataset {}".format(processed_fname, spec))
with open(processed_fname, 'r') as f:
rdf_record = []
lines = 0
records = 0
stored = 0
new = 0
not_orphaned = []
sparql_update_queries = []
es_actions = []
# set orphaned records
for line in f:
lines += 1
exists, named_graph, content_hash = self.is_line_marker(line)
if exists:
new += 1
records += 1
triples = " ".join(rdf_record)
record = ElasticSearchRDFRecord(rdf_string=triples, spec=spec)
try:
record.from_rdf_string(named_graph=named_graph, rdf_string=triples, input_format="xml")
es_actions.append(record.create_es_action(doc_type="void_edmrecord", record_type="mdr", context=True))
except Exception as ex:
if console:
print("problem with {} for spec {} caused by {}".format(triples, spec, ex))
else:
logger.error("problem with {} for spec {} caused by {}".format(triples, spec, ex))
rdf_record[:] = []
if settings.RDF_STORE_TRIPLES:
sparql_update_queries.append(
record.create_sparql_update_query(acceptance=acceptance)
)
nr_sparql_updates = len(sparql_update_queries)
if settings.RDF_STORE_TRIPLES and nr_sparql_updates > 0 and nr_sparql_updates % 50 == 0:
store.update("\n".join(sparql_update_queries))
sparql_update_queries[:] = []
if records % 100 == 0 and records > 0:
logger.info("processed {} records of {} at {}".format(records, spec, ctime()))
if console:
print("processed {} records of {} at {}".format(records, spec, ctime()))
if len(es_actions) > 100:
self.bulk_index(es_actions, spec)
es_actions[:] = []
else:
rdf_record.append(line)
# store the remaining bulk items
self.bulk_index(es_actions, spec)
if settings.RDF_STORE_TRIPLES and len(sparql_update_queries) > 0:
store.update("\n".join(sparql_update_queries))
logger.info(
"Dataset {}: records inserted {}, records same content hash {}, lines parsed {}, total records processed {}".format(
spec, new, stored, lines, records)
)
print("Finished loading {spec} with {lines} and {records} in {seconds}\n".format(
spec=spec,
lines=lines,
records=records,
seconds=datetime.now() - start
))
RDFRecord.remove_orphans(spec, start.isoformat())
return lines, records
def save(self, *args, **kwargs):
# point to resource and not page or data
source_uri = self.source_uri.replace('/data/', '/resource/').replace('/page/', '/resource/')
# rewrite to base url
self.source_uri = RDFRecord.get_internal_rdf_base_uri(source_uri)
super(UserGeneratedContent, self).save(*args, **kwargs)
def get_context_data(self, **kwargs):
# todo later add acceptance mode
target_uri = self.request.build_absolute_uri().replace('/page/', '/resource/')
if "?" in target_uri:
target_uri = re.sub("\?.*$", '', target_uri)
# target_uri = target_uri.split('?')[:-1]
if not self.request.path.startswith("/page"):
target_uri = re.sub('/[a-z]{2}/resource/', '/resource/', target_uri, count=1)
if target_uri.endswith('graph'):
target_uri = re.sub("/graph$", "", target_uri)
context = super(LoDHTMLView, self).get_context_data(**kwargs)
# default and test mode
mode = self.request.REQUEST.get('mode', 'default')
acceptance = True if mode == 'acceptance' else False
if not acceptance:
acceptance = self.request.COOKIES.get('NAVE_ACCEPTANCE_MODE', False)
object_local_cache = None
cached = False
context['about'] = target_uri
context['ugc'] = None
if "/resource/cache/" in target_uri:
# lookup solution # rdfstore.get_rdfstore().get_cached_source_uri(target_uri)
cached = True
target_uri = target_uri.split('/resource/cache/')[-1]
if target_uri.endswith("about.rdf"):
target_uri = re.sub('about.rdf$', '', target_uri)
else:
target_uri = target_uri.rstrip('/')
resolved_uri = RDFRecord.get_internal_rdf_base_uri(target_uri)
if UserGeneratedContent.objects.filter(source_uri=resolved_uri).exists():
context['ugc'] = UserGeneratedContent.objects.filter(source_uri=resolved_uri)
if settings.RDF_USE_LOCAL_GRAPH:
object_local_cache = ElasticSearchRDFRecord(source_uri=resolved_uri)
object_local_cache.get_graph_by_source_uri(uri=resolved_uri)
if not object_local_cache.exists():
context['source_uri'] = target_uri
context['unknown_graph'] = True
return context
target_uri = resolved_uri
elif self.store.ask(uri=resolved_uri):
target_uri = resolved_uri
context['source_uri'] = target_uri
context['about_label'] = target_uri.split('/')[-1]
context['about_spec'] = target_uri.split('/')[-2]
context['cached'] = cached
# special query for skos
def is_skos():
return self.store.ask(
query="where {{<{subject}> <{predicate}> <{object}>}}".format(
subject=target_uri, predicate=RDF.type, object=SKOS.Concept))
if object_local_cache:
# todo: add code to retrieve proxyresources
# (with_mappings=True, include_mapping_target=True, acceptance=acceptance)
graph = object_local_cache.get_context_graph(with_mappings=True, include_mapping_target=True)
nr_levels = 4
elif cached:
if CacheResource.objects.filter(document_uri=target_uri).exists():
cache_object = CacheResource.objects.filter(document_uri=target_uri).first()
graph = cache_object.get_graph()
nr_levels = 3
else:
context['unknown_graph'] = True
return context
elif is_skos():
graph, nr_levels = RDFModel.get_skos_context_graph(store=self.store, target_uri=target_uri)
# nav_tree = RDFModel.get_nav_tree(target_uri=target_uri, store=self.store)
# todo finish the nav tree implementation
if 'skos_nav' in self.request.GET:
return context
elif '/resource/aggregation' in target_uri:
target_named_graph = "{}/graph".format(target_uri.rstrip('/'))
graph, nr_levels = RDFModel.get_context_graph(store=self.store, named_graph=target_named_graph)
else:
graph, nr_levels = RDFModel.get_context_graph(target_uri=target_uri, store=self.store)
graph_contains_target = graph.query("""ASK {{ <{}> ?p ?o }} """.format(target_uri)).askAnswer
if not graph_contains_target or len(graph) == 0:
context['unknown_graph'] = True
return context
if context['about'].endswith('/'):
context['about'] = context['about'].rstrip('/')
context['graph'] = graph
context['nr_levels'] = nr_levels
context['namespaces'] = [(prefix, uri) for prefix, uri in graph.namespaces()]
graph_bindings = GraphBindings(target_uri, graph, excluded_properties=settings.RDF_EXCLUDED_PROPERTIES)
context['skos_links'], context['skos_filter'] = graph_bindings.get_all_skos_links()
context['resources'] = graph_bindings
resource = graph_bindings.get_about_resource()
context['items'] = resource.get_items(as_tuples=True)
rdf_type = graph_bindings.get_about_resource().get_type()
context['rdf_type'] = rdf_type
context['content_template'] = self.get_content_type_template(rdf_type.search_label)
context['graph_stats'] = RDFModel.get_graph_statistics(graph)
context['alt'] = ""
context['points'] = RDFModel.get_geo_points(graph)
# DEEPZOOM VALUE(S)
zooms = graph_bindings.get_list('nave_deepZoomUrl')
if zooms:
context['deepzoom_count'] = len(zooms)
context['deepzoom_urls'] = [zoom.value for zoom in zooms]
# EXPERT MODE
expert_mode = self.request.COOKIES.get('NAVE_DETAIL_EXPERT_MODE', False)
if expert_mode:
# do expert mode stuff like more like this
context['expert_mode'] = True
if settings.MLT_DETAIL_ENABLE and object_local_cache:
context['data'] = {'items': object_local_cache.get_more_like_this()}
if settings.MLT_BANNERS and isinstance(settings.MLT_BANNERS, dict) and object_local_cache:
from collections import OrderedDict
context['data'] = {"mlt_banners": OrderedDict()}
for name, config in settings.MLT_BANNERS.items():
mlt_fields = config.get("fields", None)
if mlt_fields and any(".raw" in field for field in mlt_fields):
# .raw fields don't work with MORE LIKE THIS queries so are
# queried directly.
context['data']['mlt_banners'][name] = object_local_cache.get_raw_related(
query_fields=mlt_fields,
filter_query=config.get("filter_query", None),
graph_bindings=graph_bindings
)
else:
context['data']['mlt_banners'][name] = object_local_cache.get_more_like_this(
mlt_count=10,
mlt_fields=mlt_fields,
filter_query=config.get("filter_query", None)
)
view_modes = {
'properties': "rdf/_rdf_properties.html"
}
display_mode = self.request.GET.get('display')
if display_mode:
self.template_name = view_modes.get(display_mode, self.template_name)
return context
def get_external_uri(context, absolute_uri):
return RDFRecord.get_external_rdf_url(absolute_uri, context['request'])
def get_hub_id(self):
*rest, spec, local_id = self.about_uri.split('/')
local_id = RDFRecord.clean_local_id(local_id)
return "{}_{}_{}".format(self.org_id, spec, local_id), spec
