Oracle Forms Developer – Form Builder Reference, Volume 1

Pre-Insert trigger
Description
Fires during the Post and Commit Transactions process, before a row is inserted. It fires once for each
record that is marked for insert.
Definition Level form or block
Legal Commands
SELECT statements, DML statements (DELETE, INSERT, UPDATE), unrestricted built-ins
Enter Query Mode no
Usage Notes
Use a Pre-Insert trigger to perform the following tasks:
• change item values
• keep track of the date a record is created and store that in the record prior to committing
On Failure
Form Builder performs the following steps when the Pre-Insert trigger fails:
• sets the error location
• rolls back to the most recent savepoint
Fires In
Post and Commit Transactions
See Process Flowcharts
Pre-Insert trigger examples
Example
This example assigns a primary key field based on a sequence number, and then writes a row into an
auditing table, flagging creation of a new order.
DECLARE
CURSOR next_ord IS SELECT orderid_seq.NEXTVAL FROM dual;
BEGIN
482
/*
** Fetch the next sequence number from the
** explicit cursor directly into the item in
** the Order record. Could use SELECT...INTO,
** but explicit cursor is more efficient.
*/
OPEN next_ord;
FETCH next_ord INTO :Order.OrderId;