apps-android-commons/app/src/main/resources/queries/query_for_item.rq
Sonal Yadav e5dbcfc2a1
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Optimise SPARQL query for single entity metadata using wikibase:label (#6376)
* Optimize SPARQL query for single entity metadata using wikibase:label service

- Use SERVICE wikibase:label for efficient retrieval of labels and descriptions in preferred language
- Remove redundant label/description fetching logic
- Prevent Cartesian product and improve query performance for

* appeded all possible Wikidata languages

* Remove duplicate 'en'

* Update query_for_item.rq

* formatting, comments

---------

Co-authored-by: Sonal Yadav <sonalyadav@Sonals-MacBook-Air.local>
Co-authored-by: Nicolas Raoul <nicolas.raoul@gmail.com>
2025-07-16 17:22:10 +09:00

49 lines
1.8 KiB
SPARQL

SELECT
?item
?itemLabel
?itemDescription
?class
?classLabel
?pic
?destroyed
?endTime
?wikipediaArticle
?commonsArticle
?commonsCategory
?dateOfOfficialClosure
?pointInTime
WHERE {
SERVICE <https://query.wikidata.org/sparql> {
VALUES ?item {${ENTITY}}
}
# Get item label/class label/description in the preferred language of the user, or fallback.
SERVICE wikibase:label { bd:serviceParam wikibase:language "${LANG},en,aa,ab,ae,af,ak,am,an,ar,as,av,ay,az,ba,be,bg,bh,bi,bm,bn,bo,br,bs,ca,ce,ch,co,cr,cs,cu,cv,cy,da,de,dv,dz,ee,el,eo,es,et,eu,fa,ff,fi,fj,fo,fr,fy,ga,gd,gl,gn,gu,gv,ha,he,hi,ho,hr,ht,hu,hy,hz,ia,id,ie,ig,ii,ik,io,is,it,iu,ja,jv,ka,kg,ki,kj,kk,kl,km,kn,ko,kr,ks,ku,kv,kw,ky,la,lb,lg,li,ln,lo,lt,lu,lv,mg,mh,mi,mk,ml,mn,mo,mr,ms,mt,my,na,nb,nd,ne,ng,nl,nn,no,ny,oc,oj,om,or,os,pa,pi,pl,ps,pt,qu,rm,rn,ro,ru,rw,sa,sc,sd,se,sg,sh,si,sk,sl,sm,sn,so,sq,sr,ss,st,su,sv,sw,ta,te,tg,th,ti,tk,tl,tn,to,tr,ts,tt,tw,ty,ug,uk,ur,uz,ve,vi,vo,wa,wo,xh,yi,yo,za,zh,zu". }
# Get class (such as forest or bridge)
OPTIONAL {?item p:P31/ps:P31 ?class}
# Get picture (items without a picture will be shown in red on the Nearby map)
OPTIONAL {?item wdt:P18 ?pic}
# Get existence (whether an item still exists or not)
OPTIONAL {?item wdt:P576 ?destroyed}
OPTIONAL {?item wdt:P582 ?endTime}
OPTIONAL {?item wdt:P3999 ?dateOfOfficialClosure}
OPTIONAL {?item wdt:P585 ?pointInTime}
# Get Commons category
OPTIONAL {?item wdt:P373 ?commonsCategory}
# Get Wikipedia article
OPTIONAL {
?wikipediaArticle schema:about ?item.
?wikipediaArticle schema:isPartOf <https://en.wikipedia.org/>. # TODO internationalization
}
# Get Commons article
OPTIONAL {
?commonsArticle schema:about ?item.
?commonsArticle schema:isPartOf <https://commons.wikimedia.org/>.
}
}