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"""RDF utilities
This module is a collection of functions that handle SPARQL queries.
"""
from typing import Tuple
from string import Template
from urllib.parse import unquote
from urllib.parse import urlparse
from SPARQLWrapper import JSON, SPARQLWrapper
from gn3.monads import MonadicDict
PREFIXES = {
"dcat": "http://www.w3.org/ns/dcat#",
"dct": "http://purl.org/dc/terms/",
"ex": "http://example.org/stuff/1.0/",
"fabio": "http://purl.org/spar/fabio/",
"foaf": "http://xmlns.com/foaf/0.1/",
"generif": "http://www.ncbi.nlm.nih.gov/gene?cmd=Retrieve&dopt=Graphics&list_uids=",
"genotype": "http://genenetwork.org/genotype/",
"gn": "http://genenetwork.org/id/",
"gnc": "http://genenetwork.org/category/",
"gnt": "http://genenetwork.org/term/",
"owl": "http://www.w3.org/2002/07/owl#",
"phenotype": "http://genenetwork.org/phenotype/",
"prism": "http://prismstandard.org/namespaces/basic/2.0/",
"publication": "http://genenetwork.org/publication/",
"pubmed": "http://rdf.ncbi.nlm.nih.gov/pubmed/",
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"rdfs": "http://www.w3.org/2000/01/rdf-schema#",
"skos": "http://www.w3.org/2004/02/skos/core#",
"taxon": "https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=",
"up": "http://purl.uniprot.org/core/",
"xkos": "http://rdf-vocabulary.ddialliance.org/xkos#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
}
RDF_PREFIXES = "\n".join([f"PREFIX {key}: <{value}>"for key, value in PREFIXES.items()])
def sparql_query(
sparql_conn: SPARQLWrapper, query: str,
) -> Tuple[MonadicDict, ...]:
"""Run a SPARQL query and return the bound variables."""
def __add_value_to_dict(key, value, my_dict):
_values = set()
if key in my_dict:
if isinstance(my_dict[key], list):
_values = set(my_dict[key])
else:
_values = set([my_dict[key]])
_values.add(value)
if _values:
return list(_values)
return value
sparql_conn.setQuery(query)
sparql_conn.setReturnFormat(JSON)
parsed_response: dict = {}
results = sparql_conn.queryAndConvert()["results"]["bindings"] # type: ignore
if results:
for result in results:
if "s" in result: # A CONSTRUCT
key = result["p"]["value"] # type: ignore
value = result["o"]["value"] # type: ignore
parsed_response[key] = __add_value_to_dict(
key, value, parsed_response
)
elif "key" in result: # A SELECT
parsed_response[
result["key"] # type: ignore
] = __add_value_to_dict(
result["key"], result["value"], # type: ignore
parsed_response
)
return (MonadicDict(parsed_response),)
def get_url_local_name(string: str) -> str:
"""Get the last item after a '/" from a URL"""
if string.startswith("http"):
url = urlparse(string)
return unquote(url.path).rpartition("/")[-1]
return string
def get_dataset_metadata(
sparql_conn: SPARQLWrapper, name: str
) -> MonadicDict:
"""Return info about dataset with a given NAME"""
response: MonadicDict = MonadicDict()
for key, value in sparql_query(
sparql_conn,
Template("""
$prefix
CONSTRUCT {
?dataset ?predicate ?term .
?dataset gnt:classifiedUnder ?inbredSetName .
?dataset gnt:usesNormalization ?normalizationLabel .
?typePredicate ex:DatasetType ?typeName .
} WHERE {
?dataset rdf:type dcat:Dataset .
?dataset ?predicate ?term .
?dataset xkos:classifiedUnder ?inbredSet .
gnc:Set skos:member ?inbredSet .
?dataset (rdfs:label|dct:identifier) "$name" .
?inbredSet rdfs:label ?inbredSetName .
OPTIONAL {
?dataset xkos:classifiedUnder ?type .
gnc:DatasetType skos:member ?type .
?type ?typePredicate ?typeName .
?type (skos:altLabel|skos:prefLabel) ?typeName .
} .
OPTIONAL {
?dataset gnt:usesNormalization ?normalization .
?normalization rdfs:label ?normalizationLabel .
}
FILTER (!regex(str(?predicate), '(classifiedUnder|usesNormalization)','i')) .
}""")
.substitute(
prefix=RDF_PREFIXES,
name=name
)
)[0].items():
response[key] = value
return response
def get_publication_metadata(
sparql_conn: SPARQLWrapper, name: str
):
"""Return info about a publication with a given NAME"""
__metadata_query = """
$prefix
CONSTRUCT {
gn:publication ?publicationTerm ?publicationValue .
gn:publication ?predicate ?subject .
} WHERE {
$name ?publicationTerm ?publicationValue .
?publication ?publicationTerm ?publicationValue .
OPTIONAL {
?subject ?predicate ?publication .
} .
VALUES ?publicationTerm {
gn:pubMedId gn:title gn:volume
gn:abstract gn:pages gn:month gn:year gn:author
}
VALUES ?predicate {
gn:phenotypeOfPublication
}
}
"""
response: MonadicDict = MonadicDict()
for key, value in sparql_query(
sparql_conn,
Template(__metadata_query)
.substitute(
prefix=RDF_PREFIXES,
name=name
)
)[0].items():
response[key] = value
if isinstance(value, str) and not key.endswith("pubMedId"):
response[key] = value.map(get_url_local_name) # type: ignore
return response
def get_phenotype_metadata(
sparql_conn: SPARQLWrapper, name: str
):
"""Return info about a phenotype with a given NAME"""
__metadata_query = """
$prefix
CONSTRUCT {
?phenotype ?pPredicate ?pValue .
?phenotype ?publicationTerm ?publicationValue .
?phenotype gn:speciesName ?speciesName .
?phenotype gn:inbredSetName ?inbredSetBinomialName .
?phenotype gn:datasetName ?datasetFullName .
} WHERE {
?phenotype ?pPredicate ?pValue .
OPTIONAL {
?phenotype gn:phenotypeOfPublication ?publication .
?publication ?publicationTerm ?publicationValue .
} .
OPTIONAL {
?phenotype gn:phenotypeOfDataset ?dataset .
?dataset gn:name ?datasetFullName .
?dataset gn:datasetOfInbredSet ?inbredSet .
?inbredSet gn:binomialName ?inbredSetBinomialName .
?inbredSet gn:inbredSetOfSpecies ?species .
?species gn:displayName ?speciesName .
} .
FILTER( ?phenotype = phenotype:$name ) .
MINUS {
?phenotype rdf:type ?pValue .
}
MINUS {
?publication rdf:type ?publicationValue .
}
}
"""
result: MonadicDict = MonadicDict()
for key, value in sparql_query(
sparql_conn,
Template(__metadata_query)
.substitute(name=name,
prefix=RDF_PREFIXES)
)[0].items():
result[key] = value
return result
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