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>8.24. altertableaddtriggers(p_tab_id integer)</A
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><P
> <P
><B
>Function Properties</B
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><P
><B
>Language: </B
>PLPGSQL</P
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><B
>Return Type: </B
>integer</P
>
alterTableAddTriggers(tab_id)
Adds the log and deny access triggers to a replicated table.
</P><PRE
CLASS="PROGRAMLISTING"
>declare
v_no_id int4;
v_tab_row record;
v_tab_fqname text;
v_tab_attkind text;
v_n int4;
v_trec record;
v_tgbad boolean;
begin
-- ----
-- Grab the central configuration lock
-- ----
lock table sl_config_lock;
-- ----
-- Get our local node ID
-- ----
v_no_id := getLocalNodeId('_schemadoc');
-- ----
-- Get the sl_table row and the current origin of the table.
-- ----
select T.tab_reloid, T.tab_set, T.tab_idxname,
S.set_origin, PGX.indexrelid,
slon_quote_brute(PGN.nspname) || '.' ||
slon_quote_brute(PGC.relname) as tab_fqname
into v_tab_row
from sl_table T, sl_set S,
"pg_catalog".pg_class PGC, "pg_catalog".pg_namespace PGN,
"pg_catalog".pg_index PGX, "pg_catalog".pg_class PGXC
where T.tab_id = p_tab_id
and T.tab_set = S.set_id
and T.tab_reloid = PGC.oid
and PGC.relnamespace = PGN.oid
and PGX.indrelid = T.tab_reloid
and PGX.indexrelid = PGXC.oid
and PGXC.relname = T.tab_idxname
for update;
if not found then
raise exception 'Slony-I: alterTableAddTriggers(): Table with id % not found', p_tab_id;
end if;
v_tab_fqname = v_tab_row.tab_fqname;
v_tab_attkind := determineAttKindUnique(v_tab_row.tab_fqname,
v_tab_row.tab_idxname);
execute 'lock table ' || v_tab_fqname || ' in access exclusive mode';
-- ----
-- Create the log and the deny access triggers
-- ----
execute 'create trigger "_schemadoc_logtrigger"' ||
' after insert or update or delete on ' ||
v_tab_fqname || ' for each row execute procedure logTrigger (' ||
pg_catalog.quote_literal('_schemadoc') || ',' ||
pg_catalog.quote_literal(p_tab_id::text) || ',' ||
pg_catalog.quote_literal(v_tab_attkind) || ');';
execute 'create trigger "_schemadoc_denyaccess" ' ||
'before insert or update or delete on ' ||
v_tab_fqname || ' for each row execute procedure ' ||
'denyAccess (' || pg_catalog.quote_literal('_schemadoc') || ');';
perform alterTableAddTruncateTrigger(v_tab_fqname, p_tab_id);
perform alterTableConfigureTriggers (p_tab_id);
return p_tab_id;
end;</PRE
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