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8.102. setdroptable(integer)

Function Properties

PLPGSQLbigint
setDropTable (tab_id) Drop table tab_id from set on origin node, and generate SET_DROP_TABLE event to allow this to propagate to other nodes.
    declare
    	p_tab_id		alias for $1;
    	v_set_id		int4;
    	v_set_origin		int4;
    begin
    	-- ----
    	-- Grab the central configuration lock
    	-- ----
    	lock table sl_config_lock;
    
            -- ----
    	-- Determine the set_id
            -- ----
    	select tab_set into v_set_id from sl_table where tab_id = p_tab_id;
    
    	-- ----
    	-- Ensure table exists
    	-- ----
    	if not found then
    		raise exception 'Slony-I: setDropTable_int(): table % not found',
    			p_tab_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: setDropTable(): set % not found', v_set_id;
    	end if;
    	if v_set_origin != getLocalNodeId('_schemadoc') then
    		raise exception 'Slony-I: setDropTable(): set % has remote origin', v_set_id;
    	end if;
    
    	-- ----
    	-- Drop the table from the set and generate the SET_ADD_TABLE event
    	-- ----
    	perform setDropTable_int(p_tab_id);
    	return  createEvent('_schemadoc', 'SET_DROP_TABLE', 
    				p_tab_id::text);
    end;

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