How to insert new record or update existing record using a complex view?

Question

Currently I created this screen, there is no problems on display data, only on the update funtionality (it means insert / update / delete on the table for which the view is based on).
I have a table and a complex view in order to display the information from the table in a tabellar form (i.e up to 70 record in same "record" in the form, one for each item)
The view is like this
select a.f1, a.f2, get_value(a.pk1,1) a1, get_value(a.pk1,2) a2, get_value(a.pk1,3) a3............
from my_table a
where a.proj_id = user
and I want to permit the update of the field a1, a2, a3 in a multiposition canvas (tabellar).
I created an INSTEAD-OF trigger.
But it not work only in the form. I receive the error FRM-40654 when I try to change the existing value in the running form based on that view.
The view is woking and updatable using sql-plus.
If I query
select * from ALL_UPDATABLE_COLUMNS where table_name = 'SPV_BOQ_BOM_POS_ACTIVITIES';
in which 'SPV_BOQ_BOM_POS_ACTIVITIES' is the name of my view.
The question is: why if the view is updatable using SQL*Plus, is not updatable using Oracle Form 10gR2 ?
Someone could help me asap?
Thanks

Answer 1

I removed on the datablock three items that are not showed, one of this is the Sysdate of update on the table for which the view is based.
I removed also the on-lock trigger and the update from the form is NOT working fine.
But for now I can still mantaing the ON-LOCK trigger.
Is not a priority to remove this trigger.
I still have the problem when the field is null, it mean that in the table SP_BOQ_BOM_POS_ACTIVITIES the record not exist.
I try now to explayn better.
SPV_BOQ_BOM_POS_ACTIVITIES is the name of the view.
SP_BOQ_BOM_POS_ACTIVITIES is the name of the table.
This are the desc
desc SPV_BOQ_BOM_POS_ACTIVITIES
Describing SPV_BOQ_BOM_POS_ACTIVITIES....
NAME Null? Type
BOQ_HEADER_ID NOT NULL NUMBER(12,0)
BB_ID NOT NULL NUMBER(12,0)
BOQ_ID NOT NULL NUMBER(12,0)
PROJ_ID NOT NULL VARCHAR2(10)
ACT_GROUP_CODE VARCHAR2(30)
TOTAL_QTY NUMBER
ACT_CODE_1 VARCHAR2(4000)
QTY_1 NUMBER
ACT_CODE_2 VARCHAR2(4000)
QTY_2 NUMBER
ACT_CODE_3 VARCHAR2(4000)
QTY_3 NUMBER
ACT_CODE_4 VARCHAR2(4000)
QTY_4 NUMBER
ACT_CODE_5 VARCHAR2(4000)
QTY_5 NUMBER
ACT_CODE_6 VARCHAR2(4000)
QTY_6 NUMBER
USR_ID NOT NULL VARCHAR2(10)
LMOD NOT NULL DATE
INT_REV NOT NULL NUMBER(6,0)
The field QTY_1, QTY_2.... QTY_6 are calculated with a customer stored function from the table SP_BOQ_BOM_POS_ACTIVITIES.
Also the field ACT_CODE_1, ACT_CODE_2, .... ACT_CODE_6 are calculated with a customer stored function from the table SP_BOQ_BOM_POS_ACTIVITIES.
desc SP_BOQ_BOM_POS_ACTIVITIES
Describing SP_BOQ_BOM_POS_ACTIVITIES....
NAME Null? Type
BBPA_ID NOT NULL NUMBER(12,0)
BOQ_HEADER_ID NOT NULL NUMBER(12,0)
BB_ID NOT NULL NUMBER(12,0)
BOQ_ID NOT NULL NUMBER(12,0)
PROJ_ID NOT NULL VARCHAR2(10)
ACT_GROUP_CODE NOT NULL VARCHAR2(30)
ACT_CODE NOT NULL VARCHAR2(30)
QTY NUMBER(12,0)
FLG_MANUAL_CHANGE VARCHAR2(1)
USR_ID NOT NULL VARCHAR2(10)
LMOD NOT NULL DATE
INT_REV NOT NULL NUMBER(6,0)
If I use SQL Navigator this insert working fine
insert into SPV_BOQ_BOM_POS_ACTIVITIES
(BOQ_HEADER_ID, BB_ID, BOQ_ID, PROJ_ID, ACT_GROUP_CODE, ACT_CODE_1, QTY_1)
values (5050, 5015, 30486, 'B39368', 'TEST', '0101010101010101', 1709)
1 row(s) inserted
Instead using the Screen, at runtime, I receive the message:
FRM-40400 Transation Complete: 1 records applied and saved
but nothing is saved in the table SP_BOQ_BOM_POS_ACTIVITIES, and the view SPV_BOQ_BOM_POS_ACTIVITIES contain the calculated QTY_1 for the 'key', with null value.
Moreover If in the field QTY_1 (NUMBER) I put a character, instead a Number, just to see if the Screen attempts or not an UPDATE or AN INSERT, the message is FRM-40509: Oracle Error. UNABLE TO UPDATE RECORD. Why happen an Update and not an INSERT using the Screen?
In effect, the trial using SQL navigator of the following statement
insert into SPV_BOQ_BOM_POS_ACTIVITIES
(BOQ_HEADER_ID, BB_ID, BOQ_ID, PROJ_ID, ACT_GROUP_CODE, ACT_CODE_1, QTY_1)
values (5050, 5015, 30486, 'B39368', 'TEST', '0101010101010101', 'r');
I got Invalid Number and it's ok as answer from the database.
Edited by: fmariani on 30-apr-2009 1.51