;;======================================================================
;; Copyright 2017, Matthew Welland.
;;
;; This file is part of Megatest.
;;
;; Megatest is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; Megatest is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with Megatest. If not, see <http://www.gnu.org/licenses/>.
;;======================================================================
(declare (unit dbmod))
(module dbmod
*
(import scheme
chicken.base
(prefix sqlite3 sqlite3:)
typed-records
srfi-18
srfi-69
)
;;======================================================================
;; Database access
;;======================================================================
;; dbstruct vector containing all the relevant dbs like main.db, megatest.db, run.db etc
;; (use (srfi 18) extras tcp stack)
;; (use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64 format dot-locking z3 typed-records matchable)
;; (import (prefix sqlite3 sqlite3:))
;; (import (prefix base64 base64:))
;;
;; (declare (unit db))
;; (declare (uses common))
;; (declare (uses keys))
;; (declare (uses ods))
;; (declare (uses client))
;; (declare (uses mt))
;;
;; (include "common_records.scm")
;; (include "db_records.scm")
;; (include "key_records.scm")
;; (include "run_records.scm")
(define *number-of-writes* 0)
(define *number-non-write-queries* 0)
;;======================================================================
;; R E C O R D S
;;======================================================================
;; each db entry is a pair ( db . dbfilepath )
;; I propose this record evolves into the area record
;;
(defstruct dbr:dbstruct
(tmpdb #f)
(dbstack #f) ;; stack for tmp db handles, do not initialize with a stack
(mtdb #f)
(refndb #f)
(homehost #f) ;; not used yet
(on-homehost #f) ;; not used yet
(read-only #f)
(stmt-cache (make-hash-table))
(locdbs (make-hash-table)) ;; legacy junk in db_records
) ;; goal is to converge on one struct for an area but for now it is too confusing
;; record for keeping state,status and count for doing roll-ups in
;; iterated tests
;;
(defstruct dbr:counts
(state #f)
(status #f)
(count 0))
;;======================================================================
;; alist-of-alists
;;======================================================================
;;
;; (define (db:aa-set! dat key1 key2 val)
;; (let loop ((
;;======================================================================
;; hash of hashs
;;======================================================================
(define (db:hoh-set! dat key1 key2 val)
(let* ((subhash (hash-table-ref/default dat key1 #f)))
(if subhash
(hash-table-set! subhash key2 val)
(begin
(hash-table-set! dat key1 (make-hash-table))
(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))))
(define (db:get-cache-stmth dbstruct db stmt)
(let* ((stmt-cache (dbr:dbstruct-stmt-cache dbstruct))
(stmth (db:hoh-get stmt-cache db stmt)))
(or stmth
(let* ((newstmth (sqlite3:prepare db stmt)))
(db:hoh-set! stmt-cache db stmt newstmth)
newstmth))))
)