def get_graph(self, mode, **kwargs):
if mode == "graph" and 'named_graph' in kwargs:
graph = self.store.get_graph_store.get(named_graph=kwargs['named_graph'], as_graph=True)
elif mode == 'describe' and 'uri' in kwargs:
graph = self.store.describe(uri=kwargs['uri'])
elif mode in ['context', 'api', 'api-flat']:
if 'named_graph' in kwargs:
graph, _ = ElasticSearchRDFRecord.get_context_graph(self.store, named_graph=kwargs['named_graph'])
else:
graph, _ = ElasticSearchRDFRecord.get_context_graph(self.store, target_uri=kwargs['uri'])
else:
raise ValueError("Mode {} not supported".format(mode))
return graph
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_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
