*
*/
const char *
-notmuch_database_status_string (notmuch_database_t *notmuch);
+notmuch_database_status_string (const notmuch_database_t *notmuch);
/**
* Commit changes and close the given notmuch database.
notmuch_status_t
notmuch_database_end_atomic (notmuch_database_t *notmuch);
+/**
+ * Return the committed database revision and UUID.
+ *
+ * The database revision number increases monotonically with each
+ * commit to the database. Hence, all messages and message changes
+ * committed to the database (that is, visible to readers) have a last
+ * modification revision <= the committed database revision. Any
+ * messages committed in the future will be assigned a modification
+ * revision > the committed database revision.
+ *
+ * The UUID is a NUL-terminated opaque string that uniquely identifies
+ * this database. Two revision numbers are only comparable if they
+ * have the same database UUID.
+ */
+unsigned long
+notmuch_database_get_revision (notmuch_database_t *notmuch,
+ const char **uuid);
+
/**
* Retrieve a directory object from the database for 'path'.
*
* Return the query_string of this query. See notmuch_query_create.
*/
const char *
-notmuch_query_get_query_string (notmuch_query_t *query);
+notmuch_query_get_query_string (const notmuch_query_t *query);
/**
* Return the notmuch database of this query. See notmuch_query_create.
*/
notmuch_database_t *
-notmuch_query_get_database (notmuch_query_t *query);
+notmuch_query_get_database (const notmuch_query_t *query);
/**
* Exclude values for notmuch_query_set_omit_excluded. The strange
* notmuch_query_set_sort.
*/
notmuch_sort_t
-notmuch_query_get_sort (notmuch_query_t *query);
+notmuch_query_get_sort (const notmuch_query_t *query);
/**
* Add a tag that will be excluded from the query results by default.