Python util.from_n3函数代码示例

 def test_util_from_n3_expectliteralwithdatatypefrombool(self):
     s = 'true'
     res = util.from_n3(s)
     self.assertEqual(res, Literal(True))
     s = 'false'
     res = util.from_n3(s)
     self.assertEqual(res, Literal(False))

def get_semantic_associations(fn=None, limit=None):
    if not fn:
        verified_mappings = get_verified_mappings()
        semantic_associations = get_dbpedia_pairs_from_mappings(
            verified_mappings)
        semantic_associations = [URIRefify(p) for p in semantic_associations]
    else:
        semantic_associations = []
        with gzip.open(fn) if fn.endswith('.gz') else open(fn) as f:
            # expects a file with one space separated pair of n3 encoded IRIs
            # per line
            r = csv.DictReader(
                f,
                delimiter=b' ',
                doublequote=False,
                escapechar=None,
                quoting=csv.QUOTE_NONE,
            )
            assert r.fieldnames == ['source', 'target']
            for i, row in enumerate(r):
                if limit and i >= limit:
                    break
                source = from_n3(row['source'].decode('UTF-8'))
                target = from_n3(row['target'].decode('UTF-8'))
                semantic_associations.append((source, target))
    return semantic_associations

 def test_util_from_n3_expectpartialidempotencewithn3(self):
     for n3 in ('<http://ex.com/foo>',
                '"foo"@de',
                #'"\\""', # exception as '\\"' --> '"' by orig parser as well
                '"""multi\n"line"\nstring"""@en'):
         self.assertEqual(util.from_n3(n3).n3(), n3,
                          'from_n3(%(n3e)r).n3() != %(n3e)r' % {'n3e': n3})

 def test_util_from_n3_expectsameasn3parser(self):
     def parse_n3(term_n3):
         ''' Disclaimer: Quick and dirty hack using the n3 parser. '''
         prepstr = ("@prefix  xsd: <http://www.w3.org/2001/XMLSchema#> .\n"
                    "<urn:no_use> <urn:no_use> %s.\n" % term_n3)
         g = ConjunctiveGraph()
         g.parse(data=prepstr, format='n3')
         return [t for t in g.triples((None, None, None))][0][2]
     
     for n3 in (# "michel", # won't parse in original parser
                # "_:michel", # BNodes won't be the same
                '"michel"',
                '<http://example.org/schema>',
                '"michel"@fr',
                # '"michel"@fr^^xsd:fr', # FIXME: invalid n3, orig parser will prefer datatype
                # '"true"^^xsd:boolean', # FIXME: orig parser will expand xsd prefix
                '42',
                'true',
                'false',
                '"""multi\nline\nstring"""@en',
                '<http://ex.com/foo>',
                '"foo"@de',
                '"\\""@en',
                '"""multi\n"line"\nstring"""@en'):
         res, exp = util.from_n3(n3), parse_n3(n3)
         self.assertEquals(res, exp,
             'from_n3(%(n3e)r): %(res)r != parser.notation3: %(exp)r' % {
                     'res': res, 'exp': exp, 'n3e':n3})

 def lookup_blanks(self, g, bn, conn):
     """Recursively find any relevant blank nodes for
     the current lookup
     @param g The graph
     @param bn The blank node ID (starting _:)
     @param conn The database connection
     """
     cursor = conn.cursor()
     cursor.execute("""select subject, property, object from triples where
     page="<BLANK>" """, (bn[2:],))
     rows = cursor.fetchall()
     if rows:
         for s, p, o in rows:
             g.add((from_n3(s), from_n3(p), from_n3(o)))
         if o.startswith("_:"):
             self.lookup_blanks(g, o, conn)
     cursor.close()

 def ask_NODE(self, g, sections, var, prompt):
     answer = self.input(prompt)
     if answer.startswith("c") and var.classhint and var.classhint in sections:
         s = sections[answer[1:].strip()]
         node = s.construct(g, sections, None)
         print("back to {}".format(self.name), file=self.out)
         return node
     elif answer:        
         return util.from_n3(answer)
     else:
         return None

    def summarize(self, id):
        """Summarize an id
        @param id The id
        @return A RDFlib Graph or None if the ID is not found
        """
        g = ConjunctiveGraph()
        conn = sqlite3.connect(self.db)
        cursor = conn.cursor()

        cursor.execute(
            """select subject, property, object from triples where
            subject=?""", ("<%s%s>" % (BASE_NAME, unicode_escape(id)),))
        rows = cursor.fetchall()
        added = 0
        if rows:
            for s, p, o in rows:
                for f in FACETS:
                    if added < 20 and str(p)[1:-1] == f["uri"]:
                        g.add((from_n3(s), from_n3(p), from_n3(o)))
                        added += 1
            conn.close()
        return g

    def lookup(self, id):
        """Resolve a single id
        @param id The id
        @return A RDFlib Graph or None if the ID is not found
        """
        g = ConjunctiveGraph()
        g.bind("lemon", "http://lemon-model.net/lemon#")
        g.bind("owl", str(OWL))
        conn = sqlite3.connect(self.db)
        cursor = conn.cursor()

        cursor.execute(
            """select subject, property, object from triples where
            page=?""", (unicode_escape(id),))
        rows = cursor.fetchall()
        if rows:
            for s, p, o in rows:
                g.add((from_n3(s), from_n3(p), from_n3(o)))
                if o.startswith("_:"):
                    self.lookup_blanks(g, o, conn)
            conn.close()
            return g
        else:
            return None

    def list_values(self, offset, limit, prop):
        """
        Produce a list of all possible values for a particular property
        @param offset Where to start listing
        @param limit Number of values to list
        @param prop The property to list for
        @return A tuple consisting of a boolean indicating if there are more
        results and list of values that exist (as N3)
        """
        conn = sqlite3.connect(self.db)
        cursor = conn.cursor()
        if not offset:
            offset = 0
        cursor.execute("""SELECT DISTINCT object, obj_label, count(*)
                          FROM triples WHERE property=? AND head=0
                          GROUP BY oid ORDER BY count(*) DESC
                          LIMIT ? OFFSET ?""", (prop, limit + 1, offset))
        row = cursor.fetchone()
        n = 0
        results = []
        while n < limit and row:
            obj, label, count = row
            n3 = from_n3(obj)
            if type(n3) == Literal:
                results.append({'link': obj, 'label': n3.value,
                                'count': count})
            elif type(n3) == URIRef:
#                u = self.unname(str(n3))
#                if u:
#                    s, _ = u
                if label:
                    results.append({'link': obj, 'label': label,
                                    'count': count})
                else:
#                        results.append({'link': obj, 'label': s,
#                                        'count': count})
#                else:
                    results.append({'link': obj,
                                    'label': yuzu.displayer.DISPLAYER.apply(
                                        str(n3)),
                                    'count': count})
            n += 1
            row = cursor.fetchone()
        conn.close()
        return n == limit, results

def srtsx_body2(r, vars):
    for v in vars:
        val = from_n3(r[vars.index(v)])
        if isinstance(val, URIRef):
            yield ("    <binding name=\"%s\"><uri>%s</uri></binding>"
                   % (v, str(val)))
        elif isinstance(val, BNode):
            yield ("    <binding name=\"%s\"><bnode>%s</bnode></binding>"
                   % (v, str(val)))
        elif val.language:
            yield ("    <binding name=\"%s\"><literal xml:lang=\"%s\">"
                   "%s</literal></binding>" % (v, val.language, str(val)))
        elif val.datatype:
            yield("     <binding name=\"%s\"><literal datatype=\"%s\">"
                  "%s</literal></binding>" % (v, val.datatype, str(val)))
        else:
            yield("     <binding name=\"%s\"><literal>%s</literal></binding>"
                  % (v, str(val)))

def srtsj_body2(r, vars):
    for v in vars:
        val = from_n3(r[vars.index(v)])
        if not val:
            yield ""
        if isinstance(val, URIRef):
            yield ("      \"%s\": { \"type\": \"uri\", \"value\": \"%s\" }"
                   % (v, str(val)))
        elif isinstance(val, BNode):
            yield ("      \"%s\": { \"type\": \"bnode\", \"value\": \"%s\" }"
                   % (v, str(val)))
        elif val.language:
            yield ("      \"%s\": { \"type\": \"literal\", \"xml:lang\": "
                   "\"%s\", \"value\": \"%s\" }" % (v, val.language, str(val)))
        elif val.datatype:
            yield ("      \"%s\": { \"type\": \"literal\", \"datatype\": "
                   "\"%s\", \"value\": \"%s\" }" % (v, val.datatype,
                                                    str(val)))
        else:
            yield ("      \"%s\": { \"type\": \"literal\", \"value\": \"%s\" }"
                   % (v, str(val)))

#.........这里部分代码省略.........
        #cursor.execute("select * from senses where wordid=? and casedwordid is NULL", (word_id,))
        cursor.execute("select * from senses where wordid=?", (word_id,))
    else:
        cursor.execute("select casedwordid from casedwords where cased=?",(cased_lemma,))
        row = cursor.fetchone()
        if row is None:
            return None
        casedwordid, = row
        cursor.execute("select * from senses where casedwordid=?", (casedwordid,))
    for _, casedwordid, synsetid, senseid, sensenum, lexid, tagcount, old_sensekey, sensekey in cursor.fetchall():
        # NB. This could also be achieved by querying "casedwordid is NULL" however
        # this is significantly slower, so we filter in Python checking we return cased
        # forms only for cased lemmas
        if cased_lemma.islower() == bool(casedwordid):
            continue
        if sensekey[-1] == pos:
            this_pos_found = True
            _, sensekey2 = sensekey.split('#')
            sense_uri = entry_name(cased_lemma, pos, sensekey2)
            graph.add((entry_uri, lemon.sense, sense_uri))
            graph.add((sense_uri, RDF.type, lemon.LexicalSense))
            graph.add((sense_uri, lemon.reference, synset_name(context, synsetid, pos)))
            graph.add((sense_uri, wn_ontology.sense_number, Literal(sensenum)))
            graph.add((sense_uri, wn_ontology.tag_count, Literal(tagcount)))
            graph.add((sense_uri, wn_ontology.lex_id, Literal(lexid)))
            graph.add((sense_uri, wn_ontology.old_sense_key, Literal(old_sensekey)))

            # Now adjective positions
            cursor.execute("select position from adjpositions where synsetid=? and wordid=?", (synsetid, word_id))
            rows = cursor.fetchall()
            for position, in rows:
                graph.add((sense_uri, wn_ontology.adjposition,
                           URIRef(wn_ontology.term(quote_plus(context.adjposition_names[position])))))

            # Add definition also to sense
            cursor.execute("select definition from synsets where synsetid=?", (synsetid,))
            for definition, in cursor.fetchall():
                graph.add((sense_uri, wn_ontology.gloss, Literal(definition, lang=context.lang)))

            # Sense links
            cursor.execute("select senseid2, linkid from lexlinks where senseid1=?", (senseid,))
            for senseid2, linkid in cursor.fetchall():
                cursor.execute("select sensekey from senses where senseid=?", (senseid2,))
                sensekey3, = cursor.fetchone()
                sense2_lemma, sense2_key = sensekey3.split('#')
                pos2 = sensekey3[-1]
                sense_uri2 = entry_name(sense2_lemma, pos2, sense2_key)
                graph.add((sense_uri, wn_ontology.term(context.linktypes[linkid]), sense_uri2))

            # Verb frames (maybe only if pos=='v'?)
            cursor.execute("select sentenceid from vframesentencemaps where synsetid=? and wordid=?",
                           (synsetid, word_id))
            for sentenceid, in cursor.fetchall():
                graph.add((sense_uri, wn_ontology.verb_frame_sentence,
                           Literal(context.vframesentences[sentenceid], lang=context.lang)))

            # Sense tags
            cursor.execute("select position, senseid from sensetags inner join taggedtexts on sensetags.sensetagid=taggedtexts.sensetagid where new_sensekey=?",(sensekey,)) # unindexed
            for position, senseid in cursor.fetchall():
                cursor.execute("select sensekey from senses where senseid=?",(senseid,))
                for sensekey, in cursor.fetchall():
                    if position:
                        comp_uri = entry_name(sensekey[0:sensekey.index('#')].replace("_"," "),sensekey[-1],'Component-' + str(position+1))
                        graph.add((sense_uri, wn_ontology.sense_tag, comp_uri))
            
            # LexVo Link
            graph.add((sense_uri, OWL.sameAs, translate_to_lexvo(old_sensekey, pos)))

                 
    if not this_pos_found:
        return None

    if pos == "p":
        words = lemma.split(" ")
        node = BNode()
        comp1 = entry_name(lemma, pos, "Component-1")
        graph.add((entry_uri, lemon.decomposition, node))
        graph.add((node, RDF.first, comp1))
        graph.add((comp1, RDFS.label, Literal(words[0], lang=context.lang)))
        graph.add((comp1, RDF.type, lemon.Component))

        for idx in range(1,len(words)):
            node2 = BNode()
            graph.add((node, RDF.rest, node2))
            node = node2
            comp_uri = entry_name(lemma, pos, "Component-" + str(idx + 1))
            graph.add((node, RDF.first, comp_uri))
            graph.add((comp_uri, RDFS.label, Literal(words[idx], lang=context.lang)))
            graph.add((comp_uri, RDF.type, lemon.Component))
        graph.add((node, RDF.rest, RDF.nil))

    try:
        cursor.execute("select fragment, property, object from entrytriples where lemma=?",(quote_plus(lemma)+"-"+pos,))
        for f, p, o in cursor.fetchall():
            graph.add((entry_name(lemma,pos,f), from_n3(p), from_n3(o)))
    except:
        pass


    return graph

 def test_util_from_n3_expectliteralwithescapedquote(self):
     s = '"\\""'
     res = util.from_n3(s, default=None, backend=None)
     self.assert_(res, Literal('\\"', lang='en'))

 def test_util_from_n3_expectliteralmultiline(self):
     s = '"""multi\nline\nstring"""@en'
     res = util.from_n3(s, default=None, backend=None)
     self.assert_(res, Literal('multi\nline\nstring', lang='en'))

 def test_util_from_n3_expectliteralwithtrailingbackslash(self):
     s = '"trailing\\\\"^^<http://www.w3.org/2001/XMLSchema#string>'
     res = util.from_n3(s)
     self.assert_(res, Literal('trailing\\', datatype=XSD['string']))
     self.assert_(res.n3(), s)