Accept Name Specification
=========================

Signature:
    NetDB_Name.accept (
                        p_op_uid      int,       -- user reserving name
                        p_reserved    timestamp, -- timestamp the reserved name was reserved
                        p_name_id     int,       -- ID of the reserved name
                        p_name_type   varchar,   -- type of the reserved name
                        p_referent_id int,       -- ID of the whatever the name applies to,
                                                 --   or the ID of the received_by name for an MX.
                        p_lock        timestamp, -- lock of the referent_id
                        p_mx_pref     int        -- mx preference
                      )
        returns nothing

Implementation:
    -- Verify that the user has reserved the name or
    --   if the name  is an MX, verify that it already exists in
    --   either a reserved or accepted state.
    if ( p_op_uid has not reserved the name being accepted or
         p_name_type == "MX" but the name does not exist in any state )
        error

    -- validate the referent_id and verify it is locked.
    if (name_type == 'alias')
        -- Find what the alias points to.
        (alias_parent, parent_type) = get_alias_terminal_parent (p_referent_id, ...)

        -- Make sure it's locked.
        NetDB_Util.locked_or_die (p_op_uid, p_lock, alias_parent, parent_type)

    elsif (name_type = 'address' or 'domain' or 'interface' or 'network' or 'node')
        NetDB_Util.locked_or_die (op_p_uid, p_lock, p_referent_id, p_name_type);

    elsif (v_type = 'mx') then
        -- All validation of the MX is done in the insert.
        NetDB_MXrecord.ins (p_op_uid, p_lock, fullname, p_referent_id, p_mx_pref);

    else
        error

    -- accept the name by clearing the reservation (user, timestamp) and setting
    -- setting the appropriate column with the referent_id.
    update the name table; clearing the reservation and setting the
      appropriate column with the referent_id
    where the id == p_name_id