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git://git.savannah.gnu.org/guix/data-service.git
synced 2023-12-14 03:23:03 +01:00
d3913a14d5
squee, returns all data as strings, and expects strings as inputs to queries. So, keeping the ids as strings was easy initially, but it means that you can't tell from the type whether it should be quoted, or not... Therefore, handle ids as strings, converting them to numbers when they're fetched from the database, and back to strings as part of the queries.
54 lines
1.8 KiB
Scheme
54 lines
1.8 KiB
Scheme
;;; Guix Data Service -- Information about Guix over time
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;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
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;;;
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;;; This program is free software: you can redistribute it and/or
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;;; modify it under the terms of the GNU Affero General Public License
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;;; as published by the Free Software Foundation, either version 3 of
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;;; the License, or (at your option) any later version.
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;;;
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Affero General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Affero General Public
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;;; License along with this program. If not, see
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;;; <http://www.gnu.org/licenses/>.
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(define-module (guix-data-service model location)
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#:use-module (ice-9 match)
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#:use-module (guix utils)
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#:use-module (squee)
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#:export (location->location-id))
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(define select-existing-location
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(string-append
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"SELECT id "
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"FROM locations "
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"WHERE file = $1 AND line = $2 AND column_number = $3"))
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(define insert-location
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(string-append
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"INSERT INTO locations "
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"(file, line, column_number) VALUES "
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"($1, $2, $3) "
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"RETURNING id"))
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(define (location->location-id conn location)
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(match location
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(($ <location> file line column)
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(string->number
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(match (exec-query conn
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select-existing-location
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(list file
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(number->string line)
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(number->string column)))
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(((id)) id)
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(()
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(caar
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(exec-query conn
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insert-location
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(list file
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(number->string line)
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(number->string column))))))))))
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