Function notmuch_sys::notmuch_database_needs_upgrade [−] [src]

pub unsafe extern "C" fn notmuch_database_needs_upgrade(
    database: *mut notmuch_database_t
) -> notmuch_bool_t

Can the database be upgraded to a newer database version?

If this function returns TRUE, then the caller may call notmuch_database_upgrade to upgrade the database. If the caller does not upgrade an out-of-date database, then some functions may fail with notmuch_status_t::UPGRADE_REQUIRED. This always returns FALSE for a read-only database because there's no way to upgrade a read-only database.