1 # -*- coding: utf-8 -*-

     2 # copyright 2019 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

     3 # contact http://www.logilab.fr -- mailto:contact@logilab.fr

     4 #

     5 # This program is free software: you can redistribute it and/or modify it under

     6 # the terms of the GNU Lesser General Public License as published by the Free

     7 # Software Foundation, either version 2.1 of the License, or (at your option)

     8 # any later version.

     9 #

    10 # This program is distributed in the hope that it will be useful, but WITHOUT

    11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

    12 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more

    13 # details.

    14 #

    15 # You should have received a copy of the GNU Lesser General Public License

    16 # along with this program. If not, see <http://www.gnu.org/licenses/>.

    17 

    18 from rdflib import Namespace, ConjunctiveGraph, plugin

    19 import rdflib_jsonld  # noqa

    20 

    21 plugin.register("jsonld", plugin.Serializer, "rdflib_jsonld.serializer", "JsonLDSerializer")

    22 

    23 RDF_MIMETYPE_TO_FORMAT = {

    24     'application/rdf+xml': 'xml',

    25     'text/turtle': 'turtle',

    26     'text/n3': 'n3',

    27     'application/n-quads': 'nquads',

    28     'application/n-triples': 'nt',

    29     'application/trig': 'trig',

    30     'application/ld+json': 'json-ld',

    31 }

    32 

    33 namespaces = {

    34     "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",

    35     "schema": "http://schema.org/",

    36 }

    37 

    38 NS_VARS = {ns: Namespace(uri) for ns, uri in namespaces.items()}

    39 

    40 

    41 # dict: name of CWEType -> list of regid of adapters derived from EntityRDFAdapter

    42 ETYPES_ADAPTERS = {

    43 }

    44 

    45 

    46 def conjunctive_graph():

    47     """factory to build a ``ConjunctiveGraph`` and bind all namespaces

    48     """

    49     graph = ConjunctiveGraph()

    50     for vocab, rdfns in NS_VARS.items():

    51         graph.bind(vocab, rdfns)

    52     return graph

    53 

    54 

    55 def iter_rdf_adapters(entity):

    56     for adapter_id in ETYPES_ADAPTERS.get(entity.__regid__, ()):

    57         adapter = entity.cw_adapt_to(adapter_id)

    58         if adapter:

    59             yield adapter

    60 

    61 

    62 def add_entity_to_graph(graph, entity):

    63     for adapter in iter_rdf_adapters(entity):

    64         for triple in adapter.triples():

    65             graph.add(triple)