Richard Newman e33fe71c47 Rework caching and use it inside the query engine. (#553) r=emily ... This puts caching in mentat_db, adds a reverse lookup capability for unique attributes, and populates bidirectional caches with a single SQL cursor walk. Differentiate between begin_read and begin_uncached_read. Note that we still allow toggling within InProgress, because there might be transient local state that makes starting a new transaction impossible.		2018-02-21 11:51:45 -08:00
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translate.rs	Rework caching and use it inside the query engine. (#553) r=emily	2018-02-21 11:51:45 -08:00