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>       setmovesequence(p_new_set_id integer, p_seq_id integer)
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>8.116. setmovesequence(p_new_set_id integer, p_seq_id integer)</A
></H1
><P
>       <P
><B
>Function Properties</B
></P
><P
><B
>Language: </B
>PLPGSQL</P
><P
><B
>Return Type: </B
>bigint</P
>
 
       setMoveSequence(p_seq_id, p_new_set_id) - This generates the
SET_MOVE_SEQUENCE event, after validation, notably that both sets
exist, are distinct, and have exactly the same subscription lists
        </P><PRE
CLASS="PROGRAMLISTING"
>declare
	v_old_set_id		int4;
	v_origin			int4;
begin
	-- ----
	-- Get the sequences current set
	-- ----
	select seq_set into v_old_set_id from sl_sequence
			where seq_id = p_seq_id;
	if not found then
		raise exception 'Slony-I: setMoveSequence(): sequence %d not found', p_seq_id;
	end if;
	
	-- ----
	-- Check that both sets exist and originate here
	-- ----
	if p_new_set_id = v_old_set_id then
		raise exception 'Slony-I: setMoveSequence(): set ids cannot be identical';
	end if;
	select set_origin into v_origin from sl_set
			where set_id = p_new_set_id;
	if not found then
		raise exception 'Slony-I: setMoveSequence(): set % not found', p_new_set_id;
	end if;
	if v_origin != getLocalNodeId('_schemadoc') then
		raise exception 'Slony-I: setMoveSequence(): set % does not originate on local node',
				p_new_set_id;
	end if;

	select set_origin into v_origin from sl_set
			where set_id = v_old_set_id;
	if not found then
		raise exception 'Slony-I: set % not found', v_old_set_id;
	end if;
	if v_origin != getLocalNodeId('_schemadoc') then
		raise exception 'Slony-I: set % does not originate on local node',
				v_old_set_id;
	end if;

	-- ----
	-- Check that both sets are subscribed by the same set of nodes
	-- ----
	if exists (select true from sl_subscribe SUB1
				where SUB1.sub_set = p_new_set_id
				and SUB1.sub_receiver not in (select SUB2.sub_receiver
						from sl_subscribe SUB2
						where SUB2.sub_set = v_old_set_id))
	then
		raise exception 'Slony-I: subscriber lists of set % and % are different',
				p_new_set_id, v_old_set_id;
	end if;

	if exists (select true from sl_subscribe SUB1
				where SUB1.sub_set = v_old_set_id
				and SUB1.sub_receiver not in (select SUB2.sub_receiver
						from sl_subscribe SUB2
						where SUB2.sub_set = p_new_set_id))
	then
		raise exception 'Slony-I: subscriber lists of set % and % are different',
				v_old_set_id, p_new_set_id;
	end if;

	-- ----
	-- Change the set the sequence belongs to
	-- ----
	perform setMoveSequence_int(p_seq_id, p_new_set_id);
	return  createEvent('_schemadoc', 'SET_MOVE_SEQUENCE', 
			p_seq_id::text, p_new_set_id::text);
end;</PRE
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