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[net-charts] modify process-datelist to cycle balancelist once

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This will deconstruct process-datelist to not call the utility
(gnc:accounts-get-comm-total-*) functions which are still slow,
because they will cycle through the balancelist for each account. In a
large enough report, the balance list may be thousands of entries
long, and we don't want to cycle through them every time.

This commit will loop all so that the balances are cycled once only.
This commit is contained in:
Christopher Lam 2018-09-25 09:59:54 +08:00
parent ab97eed979
commit a86d17e77d
1 changed files with 52 additions and 41 deletions
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93
gnucash/report/standard-reports/net-charts.scm
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@ -327,52 +327,69 @@
currentbal
(cons currentbal balancelist)))))))))
;; This calculates the balances for all the 'accounts' for each
;; element of the list 'dates'. If income?==#t, the signs get
;; reversed according to income-sign-reverse general option
;; settings. Uses the collector->monetary conversion function
;; above. Returns a list of gnc-monetary.
(define (process-datelist account-balances accounts dates income?)
;; This calculates the balances for all the 'account-balances' for
;; each element of the list 'dates'. Uses the collector->monetary
;; conversion function above. Returns a list of gnc-monetary.
(define (process-datelist account-balances dates left-col?)
(define (get-nth-balance account n)
(let ((acct-balances (cdr (assoc account account-balances))))
(list-ref acct-balances n)))
(define (collector-minus coll1 coll2)
(let ((res (gnc:make-commodity-collector)))
(res 'merge coll1 #f)
(res 'minusmerge coll2 #f)
res))
(define (get-nth-interval account n)
(let ((bal1 (get-nth-balance account n))
(bal2 (get-nth-balance account (1+ n))))
(- bal2 bal1)))
(define accountlist
(if inc-exp?
(if left-col?
(assoc-ref classified-accounts ACCT-TYPE-INCOME)
(assoc-ref classified-accounts ACCT-TYPE-EXPENSE))
(if left-col?
(assoc-ref classified-accounts ACCT-TYPE-ASSET)
(assoc-ref classified-accounts ACCT-TYPE-LIABILITY))))
(define (monetary->collector mon)
(let ((c (gnc:make-commodity-collector)))
(c 'add (gnc:gnc-monetary-commodity mon) (gnc:gnc-monetary-amount mon))
c))
(define filtered-account-balances
(filter
(lambda (a)
(member (car a) accountlist))
account-balances))
(define (acc-balances->list-of-balances lst)
;; input: (list (list acc1 bal0 bal1 bal2 ...)
;; (list acc2 bal0 bal1 bal2 ...) ...)
;; whereby list of balances are numbers in the acc's currency
;; output: (list <mon-coll0> <mon-coll1> <mon-coll2>)
(define list-of-collectors
(let loop ((n (length dates)) (result '()))
(if (zero? n) result
(loop (1- n) (cons (gnc:make-commodity-collector) result)))))
(let loop ((lst lst))
(when (pair? lst)
(let innerloop ((list-of-collectors list-of-collectors)
(list-of-balances (cdar lst)))
(when (pair? list-of-balances)
((car list-of-collectors) 'add
(xaccAccountGetCommodity (caar lst))
(car list-of-balances))
(innerloop (cdr list-of-collectors) (cdr list-of-balances))))
(loop (cdr lst))))
list-of-collectors)
(let loop ((dates dates)
(dates-idx 0)
(acct-balances (acc-balances->list-of-balances filtered-account-balances))
(result '()))
(if (if inc-exp?
(null? (cdr dates))
(null? dates))
(reverse result)
(loop (cdr dates)
(1+ dates-idx)
(cons (collector->monetary
((if inc-exp?
(if income?
gnc:accounts-get-comm-total-income
gnc:accounts-get-comm-total-expense)
gnc:accounts-get-comm-total-assets)
accounts
(lambda (account)
(monetary->collector
(gnc:make-gnc-monetary
(xaccAccountGetCommodity account)
(if inc-exp?
(get-nth-interval account dates-idx)
(get-nth-balance account dates-idx))))))
(if inc-exp? (cadr dates) (car dates)))
result)))))
(cdr acct-balances)
(cons
(collector->monetary
(if inc-exp?
(collector-minus (car acct-balances) (cadr acct-balances))
(car acct-balances))
(if inc-exp? (cadr dates) (car dates)))
result)))))
(gnc:report-percent-done 1)
(set! commodity-list (gnc:accounts-get-commodities
@ -392,15 +409,9 @@
(let* ((account-balancelist (map account->balancelist accounts))
(assets-list (process-datelist
account-balancelist
(if inc-exp?
accounts
(assoc-ref classified-accounts ACCT-TYPE-ASSET))
dates-list #t))
(liability-list (process-datelist
account-balancelist
(if inc-exp?
accounts
(assoc-ref classified-accounts ACCT-TYPE-LIABILITY))
dates-list #f))
(net-list (map monetary+ assets-list liability-list))
(dates-list (if inc-exp?