6.132. updaterelname(integer, integer)

Function Properties

Language: PLPGSQL

Return Type: integer

updateRelname(set_id, only_on_node)

declare
        p_set_id                alias for $1;
        p_only_on_node          alias for $2;
        v_no_id                 int4;
        v_set_origin            int4;
begin
        -- ----
        -- Grab the central configuration lock
        -- ----
        lock table sl_config_lock;

        -- ----
        -- Check that we either are the set origin or a current
        -- subscriber of the set.
        -- ----
        v_no_id := getLocalNodeId('_schemadoc');
        select set_origin into v_set_origin
                        from sl_set
                        where set_id = p_set_id
                        for update;
        if not found then
                raise exception 'Slony-I: set % not found', p_set_id;
        end if;
        if v_set_origin <> v_no_id
                and not exists (select 1 from sl_subscribe
                        where sub_set = p_set_id
                        and sub_receiver = v_no_id)
        then
                return 0;
        end if;
    
        -- ----
        -- If execution on only one node is requested, check that
        -- we are that node.
        -- ----
        if p_only_on_node > 0 and p_only_on_node <> v_no_id then
                return 0;
        end if;
        update sl_table set 
                tab_relname = PGC.relname, tab_nspname = PGN.nspname
                from pg_catalog.pg_class PGC, pg_catalog.pg_namespace PGN 
                where sl_table.tab_reloid = PGC.oid
                        and PGC.relnamespace = PGN.oid;
        update sl_sequence set
                seq_relname = PGC.relname, seq_nspname = PGN.nspname
                from pg_catalog.pg_class PGC, pg_catalog.pg_namespace PGN
                where sl_sequence.seq_reloid = PGC.oid
                and PGC.relnamespace = PGN.oid;
        return p_set_id;
end;