Lucas_Werkmeister_WMDE created this task.
Lucas_Werkmeister_WMDE added projects: Wikidata wb_terms Trailblazing, Wikidata.

TASK DESCRIPTION
  The current implementation, `TermPropertyLabelResolver`, uses a `TermIndex` 
to get all the property labels in a certain language at once, cache that in 
memcached, and then look up property IDs by label. We should do something 
similar in the normalized schema – i. e., still pre-fetch everything (and still 
cache it, using the same key if possible) instead of actually searching for a 
single text in the term storage – but without implementing `TermIndex` (because 
we don’t want to implement full search support yet).
  
  However, the current interfaces for the new term store would only allow us to 
get all the term IDs for properties (effectively the entire content of 
`wbt_property_terms`), then resolve all those terms to a giant array, and then 
filter for labels in a certain language afterwards. We can’t afford to transfer 
all that data between PHP and the database, so instead the `wbt_property_terms` 
and `wbt_term_in_lang` parts will have to exchange JOIN conditions somehow, so 
that we can load all property labels in a certain language with just one query. 
(It still won’t be as efficient as in `wb_terms`, but with caching it should do 
for a while, and we can investigate improvements later.)

TASK DETAIL
  https://phabricator.wikimedia.org/T225003

EMAIL PREFERENCES
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To: Lucas_Werkmeister_WMDE
Cc: alaa_wmde, Aklapper, Lucas_Werkmeister_WMDE, darthmon_wmde, Premeditated, 
Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, 
rosalieper, Wikidata-bugs, aude, Lydia_Pintscher, Mbch331
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