zaclys/searxng
1
0
Fork 1
mirror of https://github.com/searxng/searxng synced 2024-01-01 18:24:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

[fix] openstreetmap engine: optmizer SPARQL query

Browse Source 
add
hint:Query hint:optimizer "None".
to the SPARQL query to keep the response time small.

It tells the optimizer to follow the path from ?item to the different property values
instead of the other way around.
See https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/query_optimization#Property_paths
This commit is contained in:
Alexandre Flament 2021-09-25 11:16:22 +02:00
parent 6f11b61cd5
commit ab569c1e12
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
searx/engines/openstreetmap.py
View File

@ -42,6 +42,7 @@ route_re = re.compile('(?:from )?(.+) to (.+)')
wikidata_image_sparql = """
select ?item ?itemLabel ?image ?sign ?symbol ?website ?wikipediaName
where {
hint:Query hint:optimizer "None".
values ?item { %WIKIDATA_IDS% }
OPTIONAL { ?item wdt:P18|wdt:P8517|wdt:P4291|wdt:P5252|wdt:P3451|wdt:P4640|wdt:P5775|wdt:P2716|wdt:P1801|wdt:P4896 ?image }
OPTIONAL { ?item wdt:P1766|wdt:P8505|wdt:P8667 ?sign }