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from io import StringIO
from rdflib import Dataset, Graph, logger, plugin
from rdflib.graph import ReadOnlyGraphAggregate
from rdflib.namespace import RDF, RDFS
from rdflib.store import Store
from rdflib.term import URIRef
TEST_GRAPH_1N3 = """
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix : <http://test/> .
:foo a rdfs:Class.
:bar :d :c.
:a :d :c.
"""
TEST_GRAPH_2N3 = """
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix : <http://test/> .
@prefix log: <http://www.w3.org/2000/10/swap/log#>.
:foo a rdfs:Resource.
:bar rdfs:isDefinedBy [ a log:Formula ].
:a :d :e.
"""
TEST_GRAPH_3N3 = """
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix log: <http://www.w3.org/2000/10/swap/log#>.
@prefix : <http://test/> .
<> a log:N3Document.
"""
SPARQL_Q = """
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT *
FROM NAMED <http://example.com/graph1>
FROM NAMED <http://example.com/graph2>
FROM NAMED <http://example.com/graph3>
FROM <http://www.w3.org/2000/01/rdf-schema#>
WHERE {?sub ?pred rdfs:Class }"""
SPARQL_Q2 = """
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?class
WHERE { GRAPH ?graph { ?member a ?class } }"""
SPARQL_Q3 = """
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX log: <http://www.w3.org/2000/10/swap/log#>
SELECT ?n3Doc
WHERE {?n3Doc a log:N3Document }"""
def test_aggregate_raw():
mem_store = plugin.get("Memory", Store)()
graph1 = Graph(mem_store)
graph2 = Graph(mem_store)
graph3 = Graph(mem_store)
for n3_str, graph in [
(TEST_GRAPH_1N3, graph1),
(TEST_GRAPH_2N3, graph2),
(TEST_GRAPH_3N3, graph3),
]:
graph.parse(StringIO(n3_str), format="n3")
g = ReadOnlyGraphAggregate([graph1, graph2, graph3])
# Test triples
assert len(list(g.triples((None, RDF.type, None)))) == 4
assert len(list(g.triples((URIRef("http://test/bar"), None, None)))) == 2
assert len(list(g.triples((None, URIRef("http://test/d"), None)))) == 3
# Test __len__
assert len(g) == 8
# assert context iteration
for g in g.contexts():
assert isinstance(g, Graph)
# Test __contains__
assert (URIRef("http://test/foo"), RDF.type, RDFS.Resource) in g
bar_predicates = [URIRef("http://test/d"), RDFS.isDefinedBy]
assert (
len(list(g.triples_choices((URIRef("http://test/bar"), bar_predicates, None))))
== 2
)
def test_aggregate2():
mem_store = plugin.get("Memory", Store)()
graph1 = Graph(mem_store, URIRef("http://example.com/graph1"))
graph2 = Graph(mem_store, URIRef("http://example.com/graph2"))
graph3 = Graph(mem_store, URIRef("http://example.com/graph3"))
for n3_str, graph in [
(TEST_GRAPH_1N3, graph1),
(TEST_GRAPH_2N3, graph2),
(TEST_GRAPH_3N3, graph3),
]:
graph.parse(StringIO(n3_str), format="n3")
graph4 = Graph(mem_store, RDFS)
graph4.parse(data=TEST_GRAPH_1N3, format="n3")
g = Dataset(store=mem_store, default_union=True)
assert g is not None
assert len(list(g.quads((None, None, None, None)))) == 11
assert len(list(g.contexts())) == 5
logger.debug(list(g.contexts()))
assert (
len(list(g.quads((None, None, None, URIRef("http://example.com/graph2"))))) == 4
)
assert (
len(
list(
g.quads(
(None, None, None, URIRef("http://www.w3.org/2000/01/rdf-schema#"))
)
)
)
== 6
)
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