Updating record in a data block based on view in oracle forms

hi all ,
We have two data blocks in our custom oracle form.The first data block is for search criteria provided with buttons 'GO' and 'ADD ROW' and the second data block is based on a view that fetches record when user clicks on GO based on the the criteria specified in the above block. The Below block contains one SAVE button too.
We have a requirement when GO button is pressed and corresponding records are shown in the below block, user should be able to edit the record. Want to know how to make it editable?
Help appreciated....!!!

Your view is based on how many tables and does it include all NOT NULL fields from all tables?

Similar Messages

Query on Data Block based on View

Hi,
I am new to forms and am trying to modify an existing form which currently works in the following way :
The same form is used for insert/updates/queries.
The data block is based on a table and a post query trigger is written which updates the other text items on the canvas(which come from different tables) based on the values returned by the data block. Since the query functionality is based only on the table, you cannot query on the other items that are on the canvas. I need to make the query work on the other items that come from different tables.
I created a view which joins all the tables but when I query although it returns the right record I get an error message " Cannot insert into or update view"
I'm not sure what the best way to resolve this is ?
Any suggestions ?
Thanks
Preeti

Thanks for the replies.
I created an updateable view and an instead of trigger. The Form is now queryable on all fields and the insert to the table works beautifully.
However, now I'm getting an error on Update. Updating any column on the form results in a
ORA-01733: virtual column not allowed here
FRM-40501: ORACLE error: unable to reserve record for update or delete.
The code for the view is :
select a.*,
B.vendor_name as Supplier_name,
     'PRE' AS TO_OWNER,
     C.vendor_site_code as supplier_site,
     ARCH.vendor_name AS Architect,
     p.segment1 as Project,
     ph.segment1 as PO_number,
     decode(a.interface_status,'I','Interfaced', 'U', 'UnInterfaced',
     'P', 'Partial',null) Interface_display_status,
     decode(a.approval_status,'A','Approved', 'P', 'Partial',
     'R', 'Rejected', 'U','Unapproved',null) Approval_display_status
from idc_aia_g702 a, po_vendors b,
po_vendor_sites_all C,
PO_VENDORS ARCH,
pa_projects_all p,
po_headers_all ph
where b.vendor_id = a.vendor_id
AND A.vendor_site_Id (+) = C.vendor_site_id
AND A.VIA_ARCHITECT_VENDOR_ID = ARCH.VENDOR_ID (+)
and a.project_id = p.project_id
and a.po_header_id = ph.po_header_id;
I know I have to do something on either the data block property palette or the individual item property palette and clicking on any field within the form in order to update it results in the error mentioned above.
Shd I have all the item props as Query Only set to Yes ? or the ones for Table A as Query Only set to N and the other table columns as Y ?
Thanks
Preeti

9i Forms Challenge! Query records from a data block based on this view

According to Oracle Support, it is not unusual that complicated views like the one shown below fail to work in Forms. They recommend that I "try using a When-validate trigger" to solve the problem. I would be grateful if someone could show me how. It would also be helpful if someone could explain why Forms would have a problem querying such a view in the first place.
Thanks very much!
CREATE TABLE t (
id NUMBER,
property VARCHAR2(2),
val NUMBER
INSERT INTO t VALUES ( 1, 'A', 10 );
INSERT INTO t VALUES ( 1, 'B', 11 );
INSERT INTO t VALUES ( 2, 'A', 12 );
INSERT INTO t VALUES ( 2, 'B', 13 );
INSERT INTO t VALUES ( 3, 'A', 14 );
|| This view produces an ORA-01403 no data found error
|| in Oracle Forms 9i.
CREATE OR REPLACE VIEW t_v
AS
SELECT id,
MAX( DECODE( property, 'A', val, NULL ) ) AS a_val,
MAX( DECODE( property, 'B', val, NULL ) ) AS b_val
FROM t
GROUP BY id;

Steve,
Your suggestion to put the view definition into the tablename field of the forms properties sheet was fruitful.
Instead of the ORA-01403 error (No data found), I get ORA-24347 (Warning of a NULL column in an aggregate function). This error led me to discover bug 2457121, filed 11-Jul-2002, through Metalink. This bug is reported to only be a problem in Forms 9.0.2.7. It is reported to be fixed in Forms version 9.0.2.12.
Thanks for your interest and help.
- Doug

Inserting/updating data in control block based on view

Hi!
I`ve created a block based on a view to display data.
I want this block to be insertable and updateable, that is I will use a on-insert/update trigger to call an insert/update procedure located in the database.
When trying to change/insert a value in the block, the error message "Error: Can not insert into or update data in a view" pops up. I`ve tried to get rid of this error, without success.
How can I make a data block based on a view insertable and updateable?
My guess is that this have something to do with locking the records(there is no rowid in the view)... but I'm not sure.
Pls advise!!

Morten
As well as on-update, on-insert, on-delete triggers you also need an on-lock,
(even though it might just contain null;) otherwise the form will try to lock the view and fail.
Actually your terminology is wrong, the block being based on a table or view is not a control block. A control block is not based on anything and has no default functionality for communicating with the database. If it was a control block, the on- triggers would not fire.

Forms9i, data block based on stored procedures, refresh on update ?

Hi,
I am using
Forms [32 Bit] Version 9.0.2.9.0 (Production)
Oracle9i Enterprise Edition Release 9.2.0.5.0 - 64bit Production
     With the Partitioning, OLAP and Oracle Data Mining options
     JServer Release 9.2.0.5.0 - Production
Oracle Toolkit Version 9.0.4.0.23 (Production)
PL/SQL Version 9.0.1.3.1 (Production)
Oracle Procedure Builder V9.0.2.0.7 Build #1022 - Production
PL/SQL Editor (c) WinMain Software (www.winmain.com), v1.0 (Production)
Oracle Query Builder 9.0.2.0.0 - Production
Oracle Virtual Graphics System Version 9.0.1.5.0 (Production)
Oracle Tools GUI Utilities Version 9.0.4.0.9 (Production)
Oracle Multimedia Version 9.0.4.0.9 (Production)
Oracle Tools Integration Version 9.0.2.0.0 (Production)
Oracle Tools Common Area Version 9.0.1.0.0
Oracle CORE     9.0.1.2.0     ProductionI have a module based on stored procedures. I have defined query, lock and update procedure. All of them are working as they should, I mean that when looking at the input and output from these procedures I don't see anything blatantly wrong.
Now, when I update a table field in the form and call the update stored procedure, this procedure takes the updated values in considerations, updates some more fields, and remove some records.
It is working as it should, except for two details :
1- I don't see the values updated by the procedure in the Form;
2- even though some records were removed from the table by the procedure, I still see all my records.
Is there a way to display the returned table?
And, is there any documentation about data block based on stored procedures, what are the required signatures and limitations of those stored procedures, what a lock procedure is supposed to do (mine does 'null;' ...), how to map a collection type defined in Oracle to a Form data block ? Any link will be appreciated, I have found half a dozen page vaguely detailing this on Google, but nothing that can compare to a usual Oracle manual. Maybe I have missed something.
Thank you for your help.
adsm

Yes, I was hoping to use these procedures to map the collection type returned to the database to the block data. I guess I was wrong. Except for the initial query and reading some other information from the database, I don't have to use these procedures as I do not write anything to it.
Thank you for your help, I will go on from there.
So, it means that I will have to iterate through my collection inside Forms and manipulate my data row by row. Or, is there a way to pass an Oracle collection type between the database and the Forms client and have it displayed without having to iterate through the rows and mapping each field?
adsm

Data Blocks Based on Stored Procedures

Is it possible to to create a data block based on a stored procedure, and create a dynamic list as a drop down box?
I have a form that runs successfully that has a data block based on a stored procedure. I add my trigger to create and populate the record group. Then in the Property Palette, when I change ITEM TYPE from TEXT ITEM to LIST ITEM, I receive the following runtime error:
FRM-40350: Query caused no records to be retrived.
Note: the tlist/list item runs successfully on a data block based on a table.

1) go to the block property to remove the same item column, then re-add the item; Since the property may remember the old text type;
make sure the record value for the list tiem from stored procedure is among the list elements!
Last sort is to do:
2) you may re-create your gui based on the table by setting the list type this time, then set the block property to be based on the stored procedure.

Single and Multiple Records On Same Data Block?

Hi all,
Im using forms 6i with db 9i.
Im having a nested table which contains a column of datatype TYPE(table of varchar2(100)).
Now i want to create a data block based on the nested table.
So, I want only one column should be multirecord in the block.
When i set the block level NO OF RECORDS PROPERTY to multiple, then all the items in the block getting changed as
multi records.
Is that possible to have multirecord for a particular field OR how to fix this issue?
Regards
Sankar MN
Edited by: SankarMCA on Oct 17, 2010 9:55 PM

Hi Baiq,
Thanks for your responses. I moved the multirecord item into a separate block(control block) and it worked.
But still im having a doubt regarding this.
How can we map a db column which has datatype of TYPE(Collection) to a particular item in forms?
Because when i try to create a new datablock based on that table im not able to move that collection column from
the available columns to database items in the datablock wizard. It seems like disabled and tree node structure and
im not able to select the same.
Next thing, Even though we assigned those column manually, How the commit_form save that multirecord column
with multiple values?
So kindly let me know how to solve this case if possible.
Regards
Sankar MN
Edited by: SankarMCA on Oct 18, 2010 7:14 AM

Data block based on procedure

While working on a form with a data block based on a procedure, I keep getting error
FRM-40364 The data type of item '%' does not match the corresponding column in the stored procedure.
I have compared the items many times and found no mismatch. When the items are resorted (in both the data block and the procedure) and everything is recompiled, the
"not matching" item referenced sometimes changes, though the types have not been changed. Has anyone solved a similar situation?

Hi,
Yes I did use the wizard,
I agve it the package.proc name for query.
it pulled up the field delivery ID,
Hit finish, because I do not need update/delete/inserts.
the query data source columns and arguments was defaulted correctly.
THe QUERY-PROCEDURE was built by default.
It is giving me an error though: wrong number or types of arguments in call to POPULATE_BLOCK..
DECLARE
bk_data HSM_WSH_DEL_UTIL.DEL_TBL;
BEGIN
hsm_wsh_del_util.do_query(bk_data);
PLSQL_TABLE.POPULATE_BLOCK(bk_data, 'NEW_DELIVERIES');
END;

Counting number of records in a data block

hi folks,
Simple question for you guys: How can I count number of records in a data block.
In other words, say I have 10 detail records listed on a data block (one of my columns is a non-database item for entering a number). Now I just want to do somethin like:
Select count(*) From <data_block> into lnRecCount
Where <non-database column> <> 0 ;
Can I do this in a button trigger? I can't get it to work?
Thanks,
bob

You should make a routine that go through records of the block and count the records that agree with your condition.

Does adding a field to a table affect a data block based on the table?

If I make a change to a table like adding a field does it affect data data blocks based on the table?

The other place I have seen where adding a new column to a table causes problems is when a programmer codes: Select * from table.
If that is coded in a form, the form will need to be recompiled before it will work properly.

Data block based on stored procedure with input arguments

Hi,
I am able to create a data block based on stored procedure.
but I want that procedure to take input arguments as well and I am facing the issue while setting the value for that input arguments from another block item.
Please somebody help, How to set the value for input argument from another control block- item?.(Note :Data block is based on the stored procedure)
Thanks in Advance,
Anandan Muthukannan

I did exactly the same way you mentioned.
But while building the form, The call to the procedure in 'QUERY-PROCEDURE' trigger has been modified like this way
procedure_name(qp_data,':BLOCK.ITEM');
so in procedure i am getting the value as ':BLOCK.ITEM' not the expected value.

Problem updating data block based on a view

Hi,
I have a data block that is based on a fairly complex view, which I want to make update-able. The default Forms behavior, of course, is to not allow this.
In an attempt to get around this, I defined an 'ON-LOCK' trigger, where I specified a single statement 'LOCK_RECORD;'. I also defined an ON-UPDATE trigger that will later call some stored PL/SQL procedures to effect the actual update (using INSTEAD-OF triggers and such). For now, I just display a message saying 'updation not currently supported'.
However, a problem occurs when I make a change to an item in the data block, don't attempt to save it, yet try to navigate to the next record. The form simply hangs and the only thing I can do is kill the process.
I'm deploying this form as within Oracle Apps 11i. I suspect this has something to do with the lock record but don't know how to get around this.
Does any one have any suggestions?
Thanks,
Niranjan Ramakrishnan

Your lock will be removed whenever the forms does a commit or rollback. In 'normal' forms processing the on-update trigger will fire as part of the commit form processing, which also includes a database commit which will remove any locks that have been taken out. Should the user clear the form a database rollback will be performed which will also remove any locks. You should not need to do any explicit removal of locks yourself.
I would not recommend not having any kind of lock processing, as Sudha says, as this could easily lead to changes to record's being lost. As long as the locking of table(s) is always done in the same order deadlocking should not occur.
You may make want to make the locking process a SELECT ... FOR UPDATE NOWAIT so if the record is already locked the user is informed and can try again later, rather than an unknown wait until the record becomes available.

Help with Data Block Based on Procedure--getting compilation error

I am trying to create a datablock based on a procedure , but im getting errors in compilation:
Errors are :
1) identifier 'HSM_WSH_DEL_UTIL.DEL_TBL' must be declared
2)PL/SQL ERROR 320 at line 7, column 27
the declaration of the type of this expression is incomplete or malformed
ANy Help would be appreciated !
Heres my pkg spec and body for the data block:
CREATE OR REPLACE PACKAGE hsm_wsh_del_util IS
TYPE del_record is record
(delivery_id number);
TYPE del_tbl is table of del_record INDEX BY BINARY_INTEGER;
procedure do_query(p_del IN OUT del_tbl);
END hsm_wsh_del_util ;
CREATE OR REPLACE PACKAGE BODY hsm_wsh_del_util IS
procedure do_query(p_del IN OUT del_tbl)
IS
idx number :=1;
CURSOR DELIVERY IS
SELECT DELIVERY_ID
FROM abc_deliveries;
begin
FOR CUR IN DELIVERY LOOP
p_del(idx).delivery_id :=cur.delivery_id;
idx:= idx+1;
END LOOP;
end do_query;
END hsm_wsh_del_util;
Edited by: 981170 on Mar 13, 2013 1:08 PM

Hi,
Yes I did use the wizard,
I agve it the package.proc name for query.
it pulled up the field delivery ID,
Hit finish, because I do not need update/delete/inserts.
the query data source columns and arguments was defaulted correctly.
THe QUERY-PROCEDURE was built by default.
It is giving me an error though: wrong number or types of arguments in call to POPULATE_BLOCK..
DECLARE
bk_data HSM_WSH_DEL_UTIL.DEL_TBL;
BEGIN
hsm_wsh_del_util.do_query(bk_data);
PLSQL_TABLE.POPULATE_BLOCK(bk_data, 'NEW_DELIVERIES');
END;

Inserting multiple records in a data block

Hi, how do i insert multiple rows from a record group into a data block. Thanks

You do it manually. Copy the values and move to the next record in the record group and in the block.
You might like the concept of basing a block on a stored procedure better. Check out the stored procedure based block sample that comes with the Oracle Forms demos.

Forms Data-Block based on stored procedures - REF CURSOR feature NOT FUNCTIONING

This topic is related to another topic in this forum titled "FORMS HOW TO SET QUERY SOURCE ARGUMENTS??" I posted my message there as well. I am posting as a NEW TOPIC so that it catches the attention of Oracle Support.
I built a data form based on a stored procedure and REF CURSOR IN OUT parameter.
My procedure takes a IN parameter to fill in the criteria for the OPEN <cursor_variable> select ... where ... statement.
In the Value setting of the Query source Arguments , I set the VALUE to ":BLOCK_NAME.ITEM_NAME" at design time to supply the input value to the procedure. this works to the extent of making available the form item value to the stored procedure parameter. I verified this by doing an insert into some debug table , of the incoming parameter value inside my stored procedure.
The cursor gets opened properly into the REF cursor variable. I verified this by fetching a record into a local variable and inserting the value into a debug table again in the stored procedure.
(I took care to close and re-open the REF cursor variable again - so that the front-end can continue to fetch it from the first record. )
***** PROBLEM **************
But the front end forms runtime is giving me a FRM-40301 - query returned no records even though the REF cursor is returned properly opened.
Did anybody else face the same problem ??
Please post what you found.
Thanks,
Shankaran
null

This topic is discussed at length in another thread "How Set Value For Query DataSource Arguments?"
But I am posting the findings here as well.
THIS TOPIC IS CLOSED.
My Bad. The problem Cause : I did not include all columns in the
cursor rowtype in the Data-block. In the wizard for the data block , I selected ONLY the columns that I needed. But I was doing a Select * from <my_table> in my open cursor <Cursor-Variable> .... The <Cursor Variable>
itself was declared <my_table>%rowtype
FIX : The Data Block structure (columns included as items) should match the cursor record Structure. One may or may not
display all the columns in the LAYOUT though.
But I don't understand why it gives such a misleading message like FRM-40301 Query retrieved no records. Oracle Team fix it.
Hope this helps people who face the same problem.
Thanks,

Updating record in a data block based on view in oracle forms

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