elmo/modb-standard.el

   1 ;;; modb-standard.el --- Standartd Implement of MODB.
   2
   3 ;; Copyright (C) 2003 Yuuichi Teranishi <teranisi@gohome.org>
   4
   5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   6 ;;      Hiroya Murata <lapis-lazuli@pop06.odn.ne.jp>
   7 ;; Keywords: mail, net news
   8
   9 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
  10
  11 ;; This program is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15 ;;
  16 ;; This program is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20 ;;
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25 ;;
  26
  27 ;;; Commentary:
  28 ;;
  29
  30 ;;; Code:
  31 ;;
  32 (eval-when-compile (require 'cl))
  33
  34 (require 'elmo-util)
  35 (require 'modb)
  36
  37 (defcustom modb-standard-divide-number 500
  38   "*Standard modb divide entity number."
  39   :type '(choice (const :tag "Not divide" nil)
  40                  number)
  41   :group 'elmo)
  42
  43 (defvar modb-standard-entity-filename "entity"
  44   "Message entity database.")
  45
  46 (defvar modb-standard-flag-filename "flag"
  47   "Message number <=> Flag status database.")
  48
  49 (defvar modb-standard-msgid-filename "msgid"
  50   "Message number <=> Message-Id database.")
  51
  52 (eval-and-compile
  53   (luna-define-class modb-standard (modb-generic)
  54                      (number-list       ; sorted list of message numbers.
  55                       entity-map        ; number, msg-id -> entity mapping.
  56                       flag-map          ; number -> flag-list mapping
  57                       flag-count        ; list of (FLAG . COUNT)
  58                       overview-handler  ; instance of modb-entity-handler.
  59                       ))
  60   (luna-define-internal-accessors 'modb-standard))
  61
  62 ;; for internal use only
  63 (defsubst modb-standard-key (number)
  64   (concat "#" (number-to-string number)))
  65
  66 (defsubst modb-standard-entity-id (entity)
  67   (if (eq 'autoload (car-safe entity))
  68       (cddr entity)
  69     (elmo-msgdb-message-entity-field
  70      (elmo-message-entity-handler entity)
  71      entity 'message-id)))
  72
  73 (defsubst modb-standard-entity-map (modb)
  74   (or (modb-standard-entity-map-internal modb)
  75       (modb-standard-set-entity-map-internal
  76        modb
  77        (elmo-make-hash (elmo-msgdb-length modb)))))
  78
  79 (defsubst modb-standard-flag-map (modb)
  80   (or (modb-standard-flag-map-internal modb)
  81       (modb-standard-set-flag-map-internal
  82        modb
  83        (elmo-make-hash (elmo-msgdb-length modb)))))
  84
  85 (defsubst modb-standard-set-message-modified (modb number)
  86   (if modb-standard-divide-number
  87       (let ((section (/ number modb-standard-divide-number))
  88             (modified (modb-generic-message-modified-internal modb)))
  89         (unless (memq section modified)
  90           (modb-generic-set-message-modified-internal
  91            modb (cons section modified))))
  92     (modb-generic-set-message-modified-internal modb t)))
  93
  94 (defsubst modb-standard-set-flag-modified (modb number)
  95   (modb-generic-set-flag-modified-internal modb t))
  96
  97 (defsubst modb-standard-message-flags (modb number)
  98   (cdr (elmo-get-hash-val (modb-standard-key number)
  99                           (modb-standard-flag-map-internal modb))))
 100
 101 (defsubst modb-standard-match-flags (check-flags flags)
 102   (catch 'done
 103     (while check-flags
 104       (when (memq (car check-flags) flags)
 105         (throw 'done t))
 106       (setq check-flags (cdr check-flags)))))
 107
 108 (defsubst modb-standard-countup-flags (modb flags &optional delta)
 109   (let ((flag-count (modb-standard-flag-count-internal modb))
 110         (delta (or delta 1))
 111         elem)
 112     (dolist (flag flags)
 113       (if (setq elem (assq flag flag-count))
 114           (setcdr elem (+ (cdr elem) delta))
 115         (setq flag-count (cons (cons flag delta) flag-count))))
 116     (modb-standard-set-flag-count-internal modb flag-count)))
 117
 118 ;; save and load functions
 119 (defun modb-standard-load-msgid (modb path)
 120   (let* ((alist (elmo-object-load
 121                  (expand-file-name modb-standard-msgid-filename path)))
 122          (table (or (modb-standard-entity-map-internal modb)
 123                     (elmo-make-hash (length alist))))
 124          numbers info)
 125     (dolist (pair alist)
 126       (setq info (cons 'autoload pair))
 127       (elmo-set-hash-val (modb-standard-key (car pair)) info table)
 128       (elmo-set-hash-val (cdr pair) info table)
 129       (setq numbers (cons (car pair) numbers)))
 130     (modb-standard-set-number-list-internal modb (nreverse numbers))
 131     (modb-standard-set-entity-map-internal modb table)))
 132
 133 (defun modb-standard-save-msgid (modb path)
 134   (let ((table (modb-standard-entity-map-internal modb))
 135         entity alist)
 136     (dolist (number (modb-standard-number-list-internal modb))
 137       (setq entity (elmo-get-hash-val (modb-standard-key number) table))
 138       (setq alist (cons (cons number (modb-standard-entity-id entity))
 139                         alist)))
 140     (elmo-object-save
 141      (expand-file-name modb-standard-msgid-filename path)
 142      (nreverse alist))))
 143
 144 (defun modb-standard-load-flag (modb path)
 145   (let ((table (or (modb-standard-flag-map-internal modb)
 146                    (elmo-make-hash (elmo-msgdb-length modb)))))
 147     (dolist (info (elmo-object-load
 148                    (expand-file-name modb-standard-flag-filename path)))
 149       (modb-standard-countup-flags modb (cdr info))
 150       (elmo-set-hash-val (modb-standard-key (car info)) info table))
 151     (modb-standard-set-flag-map-internal modb table)))
 152
 153 (defun modb-standard-save-flag (modb path)
 154   (let (table flist info)
 155     (when (setq table (modb-standard-flag-map-internal modb))
 156       (mapatoms
 157        (lambda (atom)
 158          (setq info (symbol-value atom))
 159          (when (cdr info)
 160            (setq flist (cons info flist))))
 161        table))
 162     (elmo-object-save
 163      (expand-file-name modb-standard-flag-filename path)
 164      flist)))
 165
 166 (defsubst modb-standard-entity-filename (section)
 167   (if section
 168       (concat modb-standard-entity-filename
 169               "-"
 170               (number-to-string section))
 171     modb-standard-entity-filename))
 172
 173 (defsubst modb-standard-loaded-message-id (msgdb number)
 174   "Get message-id for autoloaded entity."
 175   (let ((ret (elmo-get-hash-val
 176               (modb-standard-key number)
 177               (modb-standard-entity-map-internal msgdb))))
 178     (cond
 179      ((null ret)
 180       ;; Garbage entity.
 181       (elmo-clear-hash-val (modb-standard-key number)
 182                            (modb-standard-entity-map-internal msgdb))
 183       nil)                              ; return nil.
 184      ((eq (car-safe ret) 'autoload)
 185       (cdr (cdr ret)))                  ; message-id.
 186      ((elmo-msgdb-message-entity-field (elmo-message-entity-handler ret)
 187                                        ret 'message-id)) ; Already loaded.
 188      (t (error "Internal error: invalid msgdb status")))))
 189
 190 (defun modb-standard-load-entity (modb path &optional section)
 191   (let ((table (or (modb-standard-entity-map-internal modb)
 192                    (elmo-make-hash (elmo-msgdb-length modb))))
 193         (objects (elmo-object-load
 194                   (expand-file-name
 195                    (modb-standard-entity-filename section)
 196                    path)))
 197         number msgid)
 198     (cond ((eq (car objects) 'modb-standard-entity-handler)
 199            ;; (standard PARAMETERS ENTITY*)
 200            (let ((handler (apply #'luna-make-entity
 201                                  (car objects)
 202                                  (car (cdr objects))))
 203                  entity)
 204              (dolist (element (cdr (cdr objects)))
 205                (setq entity (cons handler (cons nil element))
 206                      number (elmo-msgdb-message-entity-number handler entity)
 207                      msgid  (modb-standard-loaded-message-id modb number))
 208                (when msgid
 209                  (elmo-msgdb-message-entity-set-field
 210                   handler entity 'message-id msgid)
 211                  (elmo-set-hash-val (modb-standard-key number) entity table)
 212                  (elmo-set-hash-val msgid entity table)))))
 213           (t
 214            ;; legacy format
 215            (dolist (entity objects)
 216              (setq number (elmo-msgdb-message-entity-number
 217                            (elmo-message-entity-handler entity)
 218                            entity)
 219                    msgid (modb-standard-loaded-message-id modb number))
 220              (when msgid
 221                (setcar entity msgid)
 222                (elmo-set-hash-val (modb-standard-key number) entity table)
 223                (elmo-set-hash-val msgid entity table)))))
 224     (modb-standard-set-entity-map-internal modb table)))
 225
 226 (defsubst modb-standard-save-entity-1 (modb path &optional section)
 227   (let ((table (modb-standard-entity-map-internal modb))
 228         (filename (expand-file-name
 229                    (modb-standard-entity-filename (car section)) path))
 230         (handler (elmo-msgdb-message-entity-handler modb))
 231         entity entities)
 232     (dolist (number (or (cdr section)
 233                         (modb-standard-number-list-internal modb)))
 234       (when (setq entity (elmo-msgdb-message-entity modb number))
 235         (unless (modb-entity-handler-equal-p
 236                  handler
 237                  (elmo-message-entity-handler entity))
 238           (setq entity (elmo-msgdb-copy-message-entity
 239                         (elmo-message-entity-handler entity)
 240                         entity handler)))
 241         (setq entities (cons (cdr (cdr entity)) entities))))
 242     (if entities
 243         (elmo-object-save filename
 244                           (nconc
 245                            (list (luna-class-name handler)
 246                                  (modb-entity-handler-dump-parameters handler))
 247                            entities))
 248       (ignore-errors (delete-file filename)))))
 249
 250 (defun modb-standard-save-entity (modb path)
 251   (let ((modified (modb-generic-message-modified-internal modb)))
 252     (cond ((listp modified)
 253            (let ((sections (mapcar 'list modified))
 254                  section)
 255              (dolist (number (modb-standard-number-list-internal modb))
 256                (when (setq section (assq (/ number modb-standard-divide-number)
 257                                          sections))
 258                  (nconc section (list number))))
 259              (dolist (section sections)
 260                (modb-standard-save-entity-1 modb path section))))
 261           (modified
 262            (modb-standard-save-entity-1 modb path)))))
 263
 264 ;;; Implement
 265 ;;
 266 (luna-define-method elmo-msgdb-load ((msgdb modb-standard))
 267   (let ((inhibit-quit t)
 268         (path (elmo-msgdb-location msgdb)))
 269     (when (file-exists-p (expand-file-name modb-standard-flag-filename path))
 270       (modb-standard-load-msgid msgdb path)
 271       (modb-standard-load-flag msgdb path)
 272       (unless modb-standard-divide-number
 273         (modb-standard-load-entity msgdb path))
 274       t)))
 275
 276 (luna-define-method elmo-msgdb-save ((msgdb modb-standard))
 277   (let ((path (elmo-msgdb-location msgdb))
 278         (inhibit-quit t))
 279     (when (elmo-msgdb-message-modified-p msgdb)
 280       (modb-standard-save-msgid  msgdb path)
 281       (modb-standard-save-entity msgdb path)
 282       (modb-generic-set-message-modified-internal msgdb nil))
 283     (when (elmo-msgdb-flag-modified-p msgdb)
 284       (modb-standard-save-flag msgdb path)
 285       (modb-generic-set-flag-modified-internal msgdb nil))))
 286
 287 (luna-define-method elmo-msgdb-append :around ((msgdb modb-standard)
 288                                                msgdb-append)
 289   (when (> (elmo-msgdb-length msgdb-append) 0)
 290     (if (eq (luna-class-name msgdb-append) 'modb-standard)
 291         (let ((numbers (modb-standard-number-list-internal msgdb-append))
 292               duplicates)
 293           ;; number-list
 294           (modb-standard-set-number-list-internal
 295            msgdb
 296            (nconc (modb-standard-number-list-internal msgdb)
 297                   numbers))
 298           ;; entity-map
 299           (let ((table (modb-standard-entity-map msgdb))
 300                 entity msg-id)
 301             (dolist (number numbers)
 302               (setq entity (elmo-msgdb-message-entity msgdb-append number)
 303                     msg-id (modb-standard-entity-id entity))
 304               (if (elmo-get-hash-val msg-id table)
 305                   (setq duplicates (cons number duplicates))
 306                 (elmo-set-hash-val msg-id entity table))
 307               (elmo-set-hash-val (modb-standard-key number)
 308                                  entity
 309                                  table)))
 310           ;; flag-map
 311           (let ((table (modb-standard-flag-map msgdb)))
 312             (mapatoms
 313              (lambda (atom)
 314                (elmo-set-hash-val (symbol-name atom)
 315                                   (symbol-value atom)
 316                                   table))
 317              (modb-standard-flag-map msgdb-append)))
 318           ;; flag-count
 319           (dolist (pair (modb-standard-flag-count-internal msgdb-append))
 320             (modb-standard-countup-flags msgdb (list (car pair)) (cdr pair)))
 321           ;; modification flags
 322           (dolist (number (modb-standard-number-list-internal msgdb-append))
 323             (modb-standard-set-message-modified msgdb number)
 324             (modb-standard-set-flag-modified msgdb number))
 325           duplicates)
 326       (luna-call-next-method))))
 327
 328 (luna-define-method elmo-msgdb-clear :after ((msgdb modb-standard))
 329   (modb-standard-set-number-list-internal msgdb nil)
 330   (modb-standard-set-entity-map-internal msgdb nil)
 331   (modb-standard-set-flag-map-internal msgdb nil)
 332   (modb-standard-set-flag-count-internal msgdb nil))
 333
 334 (luna-define-method elmo-msgdb-length ((msgdb modb-standard))
 335   (length (modb-standard-number-list-internal msgdb)))
 336
 337 (luna-define-method elmo-msgdb-flag-available-p ((msgdb modb-standard) flag)
 338   t)
 339
 340 (luna-define-method elmo-msgdb-flags ((msgdb modb-standard) number)
 341   (modb-standard-message-flags msgdb number))
 342
 343 (luna-define-method elmo-msgdb-set-flag ((msgdb modb-standard)
 344                                          number flag)
 345   (case flag
 346     (read
 347      (elmo-msgdb-unset-flag msgdb number 'unread))
 348     (uncached
 349      (elmo-msgdb-unset-flag msgdb number 'cached))
 350     (t
 351      (let ((cur-flags (modb-standard-message-flags msgdb number))
 352            new-flags diff)
 353        (unless (memq flag cur-flags)
 354          (setq new-flags (cons flag cur-flags))
 355          (setq diff (elmo-list-diff-nonsortable new-flags cur-flags))
 356          (modb-standard-countup-flags msgdb (car diff))
 357          (modb-standard-countup-flags msgdb (cadr diff) -1)
 358          (elmo-set-hash-val (modb-standard-key number)
 359                             (cons number new-flags)
 360                             (modb-standard-flag-map msgdb))
 361          (modb-standard-set-flag-modified msgdb number))))))
 362
 363 (luna-define-method elmo-msgdb-unset-flag ((msgdb modb-standard)
 364                                            number flag)
 365   (case flag
 366     (read
 367      (elmo-msgdb-set-flag msgdb number 'unread))
 368     (uncached
 369      (elmo-msgdb-set-flag msgdb number 'cached))
 370     (all
 371      (modb-standard-countup-flags msgdb
 372                                   (modb-standard-message-flags msgdb number)
 373                                   -1)
 374      (elmo-clear-hash-val (modb-standard-key number)
 375                           (modb-standard-flag-map msgdb)))
 376     (t
 377      (let ((cur-flags (modb-standard-message-flags msgdb number))
 378            (inhibit-quit t)
 379            new-flags diff)
 380        (when (memq flag cur-flags)
 381          (setq new-flags (delq flag (copy-sequence cur-flags)))
 382          (setq diff (elmo-list-diff-nonsortable new-flags cur-flags))
 383          (modb-standard-countup-flags msgdb (car diff))
 384          (modb-standard-countup-flags msgdb (cadr diff) -1)
 385          (elmo-set-hash-val (modb-standard-key number)
 386                             (cons number new-flags)
 387                             (modb-standard-flag-map msgdb))
 388          (modb-standard-set-flag-modified msgdb number))
 389        (when (eq flag 'unread)
 390          (elmo-msgdb-unset-flag msgdb number 'new))))))
 391
 392 (luna-define-method elmo-msgdb-flag-count ((msgdb modb-standard))
 393   (modb-standard-flag-count-internal msgdb))
 394
 395 (luna-define-method elmo-msgdb-list-messages ((msgdb modb-standard))
 396   (copy-sequence
 397    (modb-standard-number-list-internal msgdb)))
 398
 399 (luna-define-method elmo-msgdb-list-flagged ((msgdb modb-standard) flag)
 400   (let (entry matched)
 401     (case flag
 402       (read
 403        (dolist (number (modb-standard-number-list-internal msgdb))
 404          (unless (memq 'unread (modb-standard-message-flags msgdb number))
 405            (setq matched (cons number matched)))))
 406       (uncached
 407        (dolist (number (modb-standard-number-list-internal msgdb))
 408          (unless (memq 'cached (modb-standard-message-flags msgdb number))
 409            (setq matched (cons number matched)))))
 410       (any
 411        (mapatoms
 412         (lambda (atom)
 413           (setq entry (symbol-value atom))
 414           (unless (and (eq (length (cdr entry)) 1)
 415                        (eq (car (cdr entry)) 'cached))
 416             ;; If there is a flag other than cached, then the message
 417             ;; matches to `any'.
 418             (setq matched (cons (car entry) matched))))
 419         (modb-standard-flag-map msgdb)))
 420       (digest
 421        (let ((flags (append elmo-digest-flags
 422                             (elmo-get-global-flags t t))))
 423          (mapatoms
 424           (lambda (atom)
 425             (setq entry (symbol-value atom))
 426             (when (modb-standard-match-flags flags (cdr entry))
 427               (setq matched (cons (car entry) matched))))
 428           (modb-standard-flag-map msgdb))))
 429       (t
 430        (mapatoms
 431         (lambda (atom)
 432           (setq entry (symbol-value atom))
 433           (when (memq flag (cdr entry))
 434             (setq matched (cons (car entry) matched))))
 435         (modb-standard-flag-map msgdb))))
 436     matched))
 437
 438 (luna-define-method elmo-msgdb-search ((msgdb modb-standard)
 439                                        condition &optional numbers)
 440   (if (vectorp condition)
 441       (let ((key (elmo-filter-key condition))
 442             results)
 443         (cond
 444          ((and (string= key "flag")
 445                (eq (elmo-filter-type condition) 'match))
 446           (setq results (elmo-msgdb-list-flagged
 447                          msgdb
 448                          (intern (elmo-filter-value condition))))
 449           (if numbers
 450               (elmo-list-filter numbers results)
 451             results))
 452          ((member key '("first" "last"))
 453           (let* ((numbers (or numbers
 454                               (modb-standard-number-list-internal msgdb)))
 455                  (len (length numbers))
 456                  (lastp (string= key "last"))
 457                  (value (string-to-number (elmo-filter-value condition))))
 458             (when (eq (elmo-filter-type condition) 'unmatch)
 459               (setq lastp (not lastp)
 460                     value (- len value)))
 461             (if lastp
 462                 (nthcdr (max (- len value) 0) numbers)
 463               (when (> value 0)
 464                 (let* ((numbers (copy-sequence numbers))
 465                        (last (nthcdr (1- value) numbers)))
 466                   (when last
 467                     (setcdr last nil))
 468                   numbers)))))
 469          (t
 470           t)))
 471     t))
 472
 473 (luna-define-method elmo-msgdb-append-entity ((msgdb modb-standard)
 474                                               entity &optional flags)
 475   (when entity
 476     (let ((number (elmo-msgdb-message-entity-number
 477                    (elmo-message-entity-handler entity) entity))
 478           (msg-id (elmo-msgdb-message-entity-field
 479                    (elmo-message-entity-handler entity) entity 'message-id))
 480           duplicate)
 481       (when (and number msg-id)
 482         ;; number-list
 483         (modb-standard-set-number-list-internal
 484          msgdb
 485          (nconc (modb-standard-number-list-internal msgdb)
 486                 (list number)))
 487         ;; entity-map
 488         (let ((table (modb-standard-entity-map msgdb)))
 489           (setq duplicate (elmo-get-hash-val msg-id table))
 490           (elmo-set-hash-val (modb-standard-key number) entity table)
 491           (elmo-set-hash-val msg-id entity table))
 492         ;; modification flags
 493         (modb-standard-set-message-modified msgdb number)
 494         ;; flag-map
 495         (when flags
 496           (elmo-set-hash-val
 497            (modb-standard-key number)
 498            (cons number flags)
 499            (modb-standard-flag-map msgdb))
 500           (modb-standard-countup-flags msgdb flags)
 501           (modb-standard-set-flag-modified msgdb number))
 502         duplicate))))
 503
 504 (luna-define-method elmo-msgdb-update-entity ((msgdb modb-standard)
 505                                               entity values)
 506   (let ((handler (elmo-message-entity-handler entity)))
 507     (when (elmo-msgdb-message-entity-update-fields handler entity values)
 508       (modb-standard-set-message-modified
 509        msgdb
 510        (elmo-msgdb-message-entity-number handler entity))
 511       t)))
 512
 513 (luna-define-method elmo-msgdb-delete-messages ((msgdb modb-standard)
 514                                                 numbers)
 515   (let ((number-list (modb-standard-number-list-internal msgdb))
 516         (entity-map (modb-standard-entity-map-internal msgdb))
 517         (flag-map (modb-standard-flag-map-internal msgdb))
 518         key entity)
 519     (dolist (number numbers)
 520       (setq key (modb-standard-key number)
 521             entity (elmo-get-hash-val key entity-map))
 522       (when entity
 523         ;; number-list
 524         (setq number-list (delq number number-list))
 525         ;; entity-map
 526         (elmo-clear-hash-val key entity-map)
 527         (elmo-clear-hash-val (modb-standard-entity-id entity) entity-map)
 528         ;; flag-count (must be BEFORE flag-map)
 529         (modb-standard-countup-flags
 530          msgdb
 531          (modb-standard-message-flags msgdb number)
 532          -1)
 533         ;; flag-map
 534         (elmo-clear-hash-val key flag-map)
 535         (modb-standard-set-message-modified msgdb number)
 536         (modb-standard-set-flag-modified msgdb number)))
 537     (modb-standard-set-number-list-internal msgdb number-list)
 538     (modb-standard-set-entity-map-internal msgdb entity-map)
 539     (modb-standard-set-flag-map-internal msgdb flag-map)
 540     t))
 541
 542 (luna-define-method elmo-msgdb-sort-entities ((msgdb modb-standard)
 543                                               predicate &optional app-data)
 544   (message "Sorting...")
 545   (let ((numbers (modb-standard-number-list-internal msgdb)))
 546     (modb-standard-set-number-list-internal
 547      msgdb
 548      (sort numbers (lambda (a b)
 549                      (funcall predicate
 550                               (elmo-msgdb-message-entity msgdb a)
 551                               (elmo-msgdb-message-entity msgdb b)
 552                               app-data))))
 553     (message "Sorting...done")
 554     msgdb))
 555
 556 (defun modb-standard-message-entity (msgdb key load)
 557   (let ((ret (elmo-get-hash-val
 558               key
 559               (modb-standard-entity-map-internal msgdb)))
 560         (inhibit-quit t))
 561     (if (eq 'autoload (car-safe ret))
 562         (when (and load modb-standard-divide-number)
 563           (modb-standard-load-entity
 564            msgdb
 565            (elmo-msgdb-location msgdb)
 566            (/ (nth 1 ret) modb-standard-divide-number))
 567           (modb-standard-message-entity msgdb key nil))
 568       ret)))
 569
 570 (luna-define-method elmo-msgdb-message-number ((msgdb modb-standard)
 571                                                message-id)
 572   (let ((ret (elmo-get-hash-val
 573               message-id
 574               (modb-standard-entity-map-internal msgdb))))
 575     (if (eq 'autoload (car-safe ret))
 576         ;; Not loaded yet but can return number.
 577         (nth 1 ret)
 578       (elmo-message-entity-number ret))))
 579
 580 (luna-define-method elmo-msgdb-message-field ((msgdb modb-standard)
 581                                               number field &optional type)
 582   (let ((ret (elmo-get-hash-val
 583               (modb-standard-key number)
 584               (modb-standard-entity-map-internal msgdb))))
 585     (if (and (eq 'autoload (car-safe ret)) (eq field 'message-id))
 586         ;; Not loaded yet but can return message-id
 587         (cdr (cdr ret))
 588       (elmo-message-entity-field (elmo-msgdb-message-entity
 589                                   msgdb (modb-standard-key number))
 590                                  field type))))
 591
 592 (luna-define-method elmo-msgdb-message-entity ((msgdb modb-standard) key)
 593   (when key
 594     (modb-standard-message-entity
 595      msgdb
 596      (cond ((stringp key) key)
 597            ((numberp key) (modb-standard-key key)))
 598      'autoload)))
 599
 600 (luna-define-method elmo-msgdb-message-entity-handler ((msgdb modb-standard))
 601   (or (modb-standard-overview-handler-internal msgdb)
 602       (modb-standard-set-overview-handler-internal
 603        msgdb
 604        (luna-make-entity 'modb-standard-entity-handler
 605                          :mime-charset
 606                          (modb-generic-mime-charset-internal msgdb)))))
 607
 608 (require 'product)
 609 (product-provide (provide 'modb-standard) (require 'elmo-version))
 610
 611 ;;; modb-standard.el ends here