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database: Add private find_unique_doc_id and find_unique_document functions

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These are a generalization of the unique-ness testing of
notmuch_database_find_message. More preparation for
firectory timestamps.
This commit is contained in:
Carl Worth 2009-10-23 14:24:07 -07:00
parent edbf7f645c
commit 668f20bdfb
2 changed files with 45 additions and 4 deletions
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48
database.cc
View file

@ -92,12 +92,51 @@ find_doc_ids (notmuch_database_t *notmuch,
free (term);
}
static notmuch_private_status_t
find_unique_doc_id (notmuch_database_t *notmuch,
const char *prefix_name,
const char *value,
unsigned int *doc_id)
{
Xapian::PostingIterator i, end;
find_doc_ids (notmuch, prefix_name, value, &i, &end);
if (i == end) {
*doc_id = 0;
return NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND;
} else {
*doc_id = *i;
return NOTMUCH_PRIVATE_STATUS_SUCCESS;
}
}
static Xapian::Document
find_document_for_doc_id (notmuch_database_t *notmuch, unsigned doc_id)
{
return notmuch->xapian_db->get_document (doc_id);
}
static notmuch_private_status_t
find_unique_document (notmuch_database_t *notmuch,
const char *prefix_name,
const char *value,
Xapian::Document *document,
unsigned int *doc_id)
{
notmuch_private_status_t status;
status = find_unique_doc_id (notmuch, prefix_name, value, doc_id);
if (status) {
*document = Xapian::Document ();
return status;
}
*document = find_document_for_doc_id (notmuch, *doc_id);
return NOTMUCH_PRIVATE_STATUS_SUCCESS;
}
static void
insert_thread_id (GHashTable *thread_ids, Xapian::Document doc)
{
@ -125,14 +164,15 @@ notmuch_message_t *
notmuch_database_find_message (notmuch_database_t *notmuch,
const char *message_id)
{
Xapian::PostingIterator i, end;
notmuch_private_status_t status;
unsigned int doc_id;
find_doc_ids (notmuch, "msgid", message_id, &i, &end);
status = find_unique_doc_id (notmuch, "msgid", message_id, &doc_id);
if (i == end)
if (status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
return NULL;
return _notmuch_message_create (notmuch, notmuch, *i);
return _notmuch_message_create (notmuch, notmuch, doc_id);
}
/* Return one or more thread_ids, (as a GPtrArray of strings), for the

1
notmuch-private.h
View file

@ -91,6 +91,7 @@ typedef enum _notmuch_private_status {
/* Then add our own private values. */
NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG,
NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND,
NOTMUCH_PRIVATE_STATUS_LAST_STATUS
} notmuch_private_status_t;