* elmo.el (elmo-folder-synchronize): Fix description of the return value.

[elisp/wanderlust.git] / elmo / modb.el

diff --git a/elmo/modb.el b/elmo/modb.el
index 7dd2782..b42261e 100644 (file)
--- a/elmo/modb.el
+++ b/elmo/modb.el
@@ -33,6 +33,7 @@
 (eval-when-compile (require 'cl))
 
 (require 'luna)
+(require 'modb-entity)
 
 (eval-and-compile
   (luna-define-class modb-generic () (location         ; location for save.
@@ -91,27 +92,44 @@ FLAG is a symbol which is one of the following:
 `answered'  ... Message which is answered.
 `cached'    ... Message which is cached.")
 
+(luna-define-generic elmo-msgdb-flag-count (msgdb)
+  "Return a list of cons cell as (flag . count).
+The count is number of message which is set flag in the MSGDB.")
+
 (luna-define-generic elmo-msgdb-list-messages (msgdb)
   "Return a list of message numbers in the MSGDB.")
 
 (luna-define-generic elmo-msgdb-list-flagged (msgdb flag)
   "Return a list of message numbers which is set FLAG in the MSGDB.")
 
-;;; (luna-define-generic elmo-msgdb-search (msgdb condition &optional numbers)
-;;;   "Search and return list of message numbers.
-;;; MSGDB is the ELMO msgdb structure.
-;;; CONDITION is a condition structure for searching.
-;;; If optional argument NUMBERS is specified and is a list of message numbers,
-;;; messages are searched from the list.")
+(luna-define-generic elmo-msgdb-search (msgdb condition &optional numbers)
+  "Search and return list of message numbers.
+MSGDB is the ELMO msgdb structure.
+CONDITION is a condition structure for searching.
+If optional argument NUMBERS is specified and is a list of message numbers,
+messages are searched from the list.
+Return t if the condition is unsupported.")
+
+(luna-define-generic elmo-msgdb-match-condition (msgdb condition number
+                                                      &optional numbers)
+  "Check whether the condition of the message is satisfied or not.
+MSGDB is the msgdb to search from.
+CONDITION is the search condition.
+NUMBER is the message number to check.
+If optional argument NUMBERS is specified and is a list of message numbers,
+messages are searched from the list.
+Return CONDITION itself if no entity exists in msgdb.")
 
 (luna-define-generic elmo-msgdb-append-entity (msgdb entity &optional flags)
   "Append a ENTITY with FLAGS into the MSGDB.
 Return non-nil if message-id of entity is duplicated.")
 
 (luna-define-generic elmo-msgdb-delete-messages (msgdb numbers)
-  "Delete messages which are contained NUMBERS from MSGDB.")
+  "Delete messages which are contained NUMBERS from MSGDB.
+Return non-nil if messages is deleted successfully.")
 
-(luna-define-generic elmo-msgdb-sort-entities (msgdb predicate &optional app-data)
+(luna-define-generic elmo-msgdb-sort-entities (msgdb predicate
+                                                    &optional app-data)
   "Sort entities of MSGDB, comparing with PREDICATE.
 PREDICATE is called with two entities and APP-DATA.
 Should return non-nil if the first entity is \"less\" than the second.")
@@ -122,6 +140,9 @@ KEY is a number or a string.
 A number is for message number in the MSGDB.
 A string is for message-id of the message.")
 
+(luna-define-generic elmo-msgdb-message-entity-handler (msgdb)
+  "Get modb entity handler instance which corresponds to the MSGDB.")
+
 ;;; generic implement
 ;;
 (luna-define-method elmo-msgdb-load ((msgdb modb-generic))
@@ -153,6 +174,29 @@ A string is for message-id of the message.")
 (luna-define-method elmo-msgdb-length ((msgdb modb-generic))
   0)
 
+(luna-define-method elmo-msgdb-search ((msgdb modb-generic)
+                                      condition &optional numbers)
+  t)
+
+(luna-define-method elmo-msgdb-match-condition ((msgdb modb-generic)
+                                               condition
+                                               number
+                                               &optional numbers)
+  (let ((entity (elmo-msgdb-message-entity msgdb number)))
+    (if entity
+       (elmo-msgdb-message-match-condition
+        (elmo-msgdb-message-entity-handler msgdb)
+        condition
+        entity
+        (elmo-msgdb-flags msgdb number)
+        (or numbers (elmo-msgdb-list-messages msgdb)))
+      condition)))
+
+(luna-define-method elmo-msgdb-message-entity-handler ((msgdb modb-generic))
+  (or modb-entity-default-cache-internal
+      (setq modb-entity-default-cache-internal
+           (luna-make-entity modb-entity-default-handler))))
+
 ;; for on demand loading
 (provide 'modb-generic)