Page History: public setifservicekeysoninsert (trigger function)
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Page Revision: 2010/02/11 09:24
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| Trigger Function | public.setifservicekeysoninsert |
Source
CREATE OR REPLACE FUNCTION public.setifservicekeysoninsert()
RETURNS trigger
LANGUAGE plpgsql
AS $function$
BEGIN
--
-- (Used with Trigger Insert with old style foreign key)
-- This condition keeps the ifServiceID inSync with the composite foreign key of nodeid, ipaddr, serviceid
-- This usually happens when a new record is written by our JDBC code (non-Hibernate DAO) for the old JDBC style
-- code has no knowledge of the new keys
--
IF NEW.ifServiceId IS NULL
THEN
SELECT ifsvc.id INTO NEW.ifserviceid
FROM ifservices ifsvc
WHERE (ifsvc.nodeid = NEW.nodeid AND ifsvc.ipAddr = NEW.ipAddr AND ifsvc.serviceid = NEW.serviceid);
IF NOT FOUND
THEN
RAISE EXCEPTION 'Outages Trigger Exception, Condition 1: No service found for... nodeid: % ipaddr: % serviceid: %', NEW.nodeid, NEW.ipAddr, NEW.serviceid;
END IF;
--
-- (Used with Trigger Insert with new style foreign key)
-- This condition keeps the composite foreign key of nodeid, ipaddr, serviceid inSync with the ifserviceid
-- This usually happens when a new record is written by our Hibernate DAOs... these DAOs have no knowledge of
-- the composite key columns
--
ELSIF NEW.ifServiceId IS NOT NULL AND (NEW.nodeId IS NULL OR NEW.ipAddr IS NULL OR NEW.serviceId IS NULL)
THEN
SELECT ifsvc.nodeId, ifsvc.ipAddr, ifsvc.serviceId INTO NEW.nodeId, NEW.ipAddr, NEW.serviceId
FROM ifservices ifsvc
WHERE (ifsvc.id = NEW.ifServiceId);
IF NOT FOUND THEN
RAISE EXCEPTION 'Outages Trigger Exception, Condition 2: No service found for serviceID: %', NEW.ifServiceId;
END IF;
END IF;
RETURN NEW;
END;
$function$
References