How can I get a detail block to requery after a database change?

Question

Hi, I have a master/detail form. When the status of the master record changes, I need to update a date in one of the detail records. If I use SQL to update the detail row in the database in the ON-CHANGE trigger of the master block, how can I get the detail block to requery to show the change? When I try doing a go_block from any of the ...UPDATE triggers, it says it is restricted.

Answer 1

wjpenfold,
Do you have a "Relationship" defined between your Master and Detail blocks? If so, you simply need to requery your master block and the detail block will automatically be requeried. If you can't use a relationship, then you can use can create a timer in the trigger that updates the database and then in the When-Timer-Expired (WTE) trigger you can go to the detail block and execute a query. For example:
/* Sample On-Change trigger */
DECLARE
   timer_id  TIMER;
BEGIN
....your code here that performs the update....
   /* Now create an instance of a timer */
   timer_id := Create_Timer ('upd_detail',1,NO_REPEAT);
END;
/* Sample Form Level When-Timer-Expired trigger */
DECLARE
   timer_id   TIMER;
BEGIN
   -- Find the timer first
   timer_id := FIND_TIMER('upd_detail');
   IF NOT ID_NULL(timer_id) THEN
      GO_BLOCK('DETAIL_BLOCK');
      Execute_Query;
   END IF;
END;Hope this helps,
Craig B-)
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