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(db:hoh-set! dat key1 key2 val)))))
(define (db:hoh-get dat key1 key2)
(let* ((subhash (hash-table-ref/default dat key1 #f)))
(and subhash
(hash-table-ref/default subhash key2 #f))))
;; the stmt-cache is associated with a single db handle
;; so there is no need for the hoh stuff.
(define (db:get-cache-stmth dbdat run-id db stmt)
(let* (;; (dbdat (dbfile:get-dbdat dbstruct run-id))
(stmt-cache (dbr:dbdat-stmt-cache dbdat))
(stmth (db:hoh-get stmt-cache db stmt)))
(db:hoh-set! stmt-cache db stmt newstmth)
;; (db:hoh-set! stmt-cache db stmt newstmth)
(hash-table-set! stmt-cache stmt newstmth)
newstmth))))
;;======================================================================
;; SQLITE3 HELPERS
;;======================================================================
(define (db:general-sqlite-error-dump exn stmt . params)
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