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Fix _notmuch_message_create to catch Xapian DocNotFoundError.

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This function is only supposed to be called with a doc_id that
was queried from the database already. So there's an internal
error if no document with that doc_id can be found in the database.

In that case, return NULL.
This commit is contained in:
Carl Worth 2009-10-23 05:45:29 -07:00
parent 17548e314a
commit 69b25a75ec
1 changed files with 22 additions and 1 deletions
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23
message.cc
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@ -108,6 +108,22 @@ _notmuch_message_destructor (notmuch_message_t *message)
return 0;
}
/* Create a new notmuch_message_t object for an existing document in
* the database.
*
* Here, 'talloc owner' is an optional talloc context to which the new
* message will belong. This allows for the caller to not bother
* calling notmuch_message_destroy on the message, and no that all
* memory will be reclaimed with 'talloc_owner' is free. The caller
* still can call notmuch_message_destroy when finished with the
* message if desired.
*
* The 'talloc_owner' argument can also be NULL, in which case the
* caller *is* responsible for calling notmuch_message_destroy.
*
* If no document exists in the database with document ID of 'doc_id'
* then this function returns NULL.
*/
notmuch_message_t *
_notmuch_message_create (const void *talloc_owner,
notmuch_database_t *notmuch,
@ -127,7 +143,12 @@ _notmuch_message_create (const void *talloc_owner,
talloc_set_destructor (message, _notmuch_message_destructor);
message->doc = notmuch->xapian_db->get_document (doc_id);
try {
message->doc = notmuch->xapian_db->get_document (doc_id);
} catch (const Xapian::DocNotFoundError &error) {
talloc_free (message);
return NULL;
}
return message;
}