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>6.101. setaddtable_int(integer, integer, text, name, text)</A
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><P
> <P
><B
>Function Properties</B
></P
><P
><B
>Language: </B
>PLPGSQL</P
><P
><B
>Return Type: </B
>integer</P
>
setAddTable_int (set_id, tab_id, tab_fqname, tab_idxname, tab_comment)
This function processes the SET_ADD_TABLE event on remote nodes,
adding a table to replication if the remote node is subscribing to its
replication set.
</P><PRE
CLASS="PROGRAMLISTING"
>declare
p_set_id alias for $1;
p_tab_id alias for $2;
p_fqname alias for $3;
p_tab_idxname alias for $4;
p_tab_comment alias for $5;
v_tab_relname name;
v_tab_nspname name;
v_local_node_id int4;
v_set_origin int4;
v_sub_provider int4;
v_relkind char;
v_tab_reloid oid;
v_pkcand_nn boolean;
v_prec record;
begin
-- ----
-- Grab the central configuration lock
-- ----
lock table sl_config_lock;
-- ----
-- For sets with a remote origin, check that we are subscribed
-- to that set. Otherwise we ignore the table because it might
-- not even exist in our database.
-- ----
v_local_node_id := getLocalNodeId('_schemadoc');
select set_origin into v_set_origin
from sl_set
where set_id = p_set_id;
if not found then
raise exception 'Slony-I: setAddTable_int(): set % not found',
p_set_id;
end if;
if v_set_origin != v_local_node_id then
select sub_provider into v_sub_provider
from sl_subscribe
where sub_set = p_set_id
and sub_receiver = getLocalNodeId('_schemadoc');
if not found then
return 0;
end if;
end if;
-- ----
-- Get the tables OID and check that it is a real table
-- ----
select PGC.oid, PGC.relkind, PGC.relname, PGN.nspname into v_tab_reloid, v_relkind, v_tab_relname, v_tab_nspname
from "pg_catalog".pg_class PGC, "pg_catalog".pg_namespace PGN
where PGC.relnamespace = PGN.oid
and slon_quote_input(p_fqname) = slon_quote_brute(PGN.nspname) ||
'.' || slon_quote_brute(PGC.relname);
if not found then
raise exception 'Slony-I: setAddTable_int(): table % not found',
p_fqname;
end if;
if v_relkind != 'r' then
raise exception 'Slony-I: setAddTable_int(): % is not a regular table',
p_fqname;
end if;
if not exists (select indexrelid
from "pg_catalog".pg_index PGX, "pg_catalog".pg_class PGC
where PGX.indrelid = v_tab_reloid
and PGX.indexrelid = PGC.oid
and PGC.relname = p_tab_idxname)
then
raise exception 'Slony-I: setAddTable_int(): table % has no index %',
p_fqname, p_tab_idxname;
end if;
-- ----
-- Verify that the columns in the PK (or candidate) are not NULLABLE
-- ----
v_pkcand_nn := 'f';
for v_prec in select attname from "pg_catalog".pg_attribute where attrelid =
(select oid from "pg_catalog".pg_class where oid = v_tab_reloid)
and attname in (select attname from "pg_catalog".pg_attribute where
attrelid = (select oid from "pg_catalog".pg_class PGC,
"pg_catalog".pg_index PGX where
PGC.relname = p_tab_idxname and PGX.indexrelid=PGC.oid and
PGX.indrelid = v_tab_reloid)) and attnotnull <> 't'
loop
raise notice 'Slony-I: setAddTable_int: table % PK column % nullable', p_fqname, v_prec.attname;
v_pkcand_nn := 't';
end loop;
if v_pkcand_nn then
raise exception 'Slony-I: setAddTable_int: table % not replicable!', p_fqname;
end if;
select * into v_prec from sl_table where tab_id = p_tab_id;
if not found then
v_pkcand_nn := 't'; -- No-op -- All is well
else
raise exception 'Slony-I: setAddTable_int: table id % has already been assigned!', p_tab_id;
end if;
-- ----
-- Add the table to sl_table and create the trigger on it.
-- ----
insert into sl_table
(tab_id, tab_reloid, tab_relname, tab_nspname,
tab_set, tab_idxname, tab_altered, tab_comment)
values
(p_tab_id, v_tab_reloid, v_tab_relname, v_tab_nspname,
p_set_id, p_tab_idxname, false, p_tab_comment);
perform alterTableAddTriggers(p_tab_id);
return p_tab_id;
end;</PRE
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