8.102. setdropsequence(p_seq_id integer)

Function Properties

Language: PLPGSQL

Return Type: bigint

setDropSequence (seq_id) On the origin node for the set, drop sequence seq_id from replication set, and raise SET_DROP_SEQUENCE to cause this to replicate to subscriber nodes.

declare
	v_set_id		int4;
	v_set_origin		int4;
begin
	-- ----
	-- Grab the central configuration lock
	-- ----
	lock table sl_config_lock;

	-- ----
	-- Determine set id for this sequence
	-- ----
	select seq_set into v_set_id from sl_sequence where seq_id = p_seq_id;

	-- ----
	-- Ensure sequence exists
	-- ----
	if not found then
		raise exception 'Slony-I: setDropSequence_int(): sequence % not found',
			p_seq_id;
	end if;

	-- ----
	-- Check that we are the origin of the set
	-- ----
	select set_origin into v_set_origin
			from sl_set
			where set_id = v_set_id;
	if not found then
		raise exception 'Slony-I: setDropSequence(): set % not found', v_set_id;
	end if;
	if v_set_origin != getLocalNodeId('_schemadoc') then
		raise exception 'Slony-I: setDropSequence(): set % has origin at another node - submit this to that node', v_set_id;
	end if;

	-- ----
	-- Add the sequence to the set and generate the SET_ADD_SEQUENCE event
	-- ----
	perform setDropSequence_int(p_seq_id);
	return  createEvent('_schemadoc', 'SET_DROP_SEQUENCE',
					p_seq_id::text);
end;