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create or replace function londiste.find_rel_oid(tbl text, kind text)
returns oid as $$
declare
res oid;
pos integer;
schema text;
name text;
begin
pos := position('.' in tbl);
if pos > 0 then
schema := substring(tbl for pos - 1);
name := substring(tbl from pos + 1);
else
schema := 'public';
name := tbl;
end if;
select c.oid into res
from pg_namespace n, pg_class c
where c.relnamespace = n.oid
and c.relkind = kind
and n.nspname = schema and c.relname = name;
if not found then
if kind = 'r' then
raise exception 'table not found';
elsif kind = 'S' then
raise exception 'seq not found';
else
raise exception 'weird relkind';
end if;
end if;
return res;
end;
$$ language plpgsql strict stable;
create or replace function londiste.find_table_oid(tbl text)
returns oid as $$
begin
return londiste.find_rel_oid(tbl, 'r');
end;
$$ language plpgsql strict stable;
create or replace function londiste.find_seq_oid(tbl text)
returns oid as $$
begin
return londiste.find_rel_oid(tbl, 'S');
end;
$$ language plpgsql strict stable;
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