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Geography: Clean up the SPARQL statement.

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This commit is contained in:
Valentin Lorentz 2021-11-08 23:46:51 +01:00
parent 3b7379ec0f
commit 849acb21f4
1 changed files with 6 additions and 8 deletions
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14
plugins/Geography/wikidata.py
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@ -40,20 +40,21 @@ SPARQL_URL = "https://query.wikidata.org/sparql"
TIMEZONE_QUERY = string.Template("""
SELECT ?item ?itemLabel ?rank ?endtime ?appliestopart ?utcoffset ?tzid (MIN(?area) AS ?min_area) WHERE {
# find all entities that the subject is part of, recursively
# find all ?item entities that the subject is part of, recursively;
wd:$subject (wdt:P131*) ?item.
# Get all timezones (returns a superset of "?item wdt:P421 ?timezone", as it does not filter on rank)
?item p:P421 ?statement.
?statement ps:P421 ?timezone.
# TODO: order the final result based on the rank?
?statement wikibase:rank ?rank.
# fetch the end of validity of the given statement (TODO: check it)
OPTIONAL { ?statement pq:P582 ?endtime. }
# filter out statements that applies only to a part of ?item...
{
# filter out statements that apply only to a part of ?item...
FILTER NOT EXISTS {
?statement pq:P518 ?appliestopart.
}
@ -72,23 +73,20 @@ SELECT ?item ?itemLabel ?rank ?endtime ?appliestopart ?utcoffset ?tzid (MIN(?are
# store the identifier of the object the statement applies to
BIND(IF(BOUND(?appliestopart),?appliestopart,?item) AS ?statementsubject).
#OPTIONAL { ?statementsubject wdt:P1082 ?population. }
# Get the area, will be used to order by specificity
OPTIONAL { ?statementsubject wdt:P2046 ?area. }
# ?timezone wdt:P31 ?timezonetype.
# ?timezone wdt:P31 wd:Q17272692. # only keep IANA timezones
# ?timezone wdt:P31 wd:Q17272482. # only keep UTC offsets
{
# Get either an IANA timezone ID...
?timezone wdt:P6687 ?tzid.
}
UNION
{
# ... or an absolute UTC offset that is not subject to DST
# ... or an absolute UTC offset
?timezone p:P2907 ?utcoffset_statement.
?utcoffset_statement ps:P2907 ?utcoffset.
# unless it is only valid in certain periods of the year (DST vs normal time)
FILTER NOT EXISTS {
?utcoffset_statement pq:P1264 ?utcoffset_validinperiod.
}