Block based on PL/SQL Procedure

Hello,
I have been thinking about building an architecture with
database views to support block querying and stored procedures
for DML. By doing this I keep the forms entirely seperated from
the table model, which is good maintenance. Changes to the data
model will affect the views and the stored procedures, not so
much the forms. Another advantage is that block-fields that come
from lookup-tables will be queryable and updateable without too
much programming. And of course perfomance is good since all SQL
is server-processed.
Does anyone know where to look for documenation on basing a
block on stored procedures ? The online help does not contain
too much on this.
Has anyone used this technique successfully and can tell me
about a few advantages of it ? Disadvantages ?
Regards
/Stefan Nilsson, Sigma
null

Yes, I've tried that since Forms 5.0. I remember 3 possible
sources for the block, FROM CLAUSE SUBQUERY, TRANSACTIONAL
TRIGGERS , and PROCEDURES.
Advantages,
It is now easier to design screen with any functionality, like
blocks where you are going to manipulate columns from different
tables. Exactly what you have in mind when you mentioned about
views.
It also supports sources other than relational tables .like
the object tables or even non-Oracle data sources.
All you have to code are procedures to support the SELECT,
LOCK, INSERT, DELETE, and UPDATE functions.
Disadvantages,
You have to code advanced PL/SQL procedures. Price to pay for
excellent functionality.
I can't exactly remember the documentation, but there is a
book titlted Advanced Developers or domething...
Stefan Nilsson (guest) wrote:
: Hello,
: I have been thinking about building an architecture with
: database views to support block querying and stored procedures
: for DML. By doing this I keep the forms entirely seperated from
: the table model, which is good maintenance. Changes to the data
: model will affect the views and the stored procedures, not so
: much the forms. Another advantage is that block-fields that
come
: from lookup-tables will be queryable and updateable without too
: much programming. And of course perfomance is good since all
SQL
: is server-processed.
: Does anyone know where to look for documenation on basing a
: block on stored procedures ? The online help does not contain
: too much on this.
: Has anyone used this technique successfully and can tell me
: about a few advantages of it ? Disadvantages ?
: Regards
: /Stefan Nilsson, Sigma
null

Similar Messages

Dynamic sql and block based on a stored procedure

Hi!
I'm triying to generate a block based on a stored procedure. I want the stored procedure to execute a dynamic sql, but I'm having getting the error "PLS-00455 cursor 'AULOCASLATE' cannot be used in dynamic SQL OPEN statement".
I have the following code:
CREATE OR REPLACE package pkg_f0015 is
type rClieInstSlate is record
(clie_id CMS_CLIENTS.ID%type
,client_nm varchar2(1000)
,cs_no CMS_CLIENTS.CS_NO%type
,dob CMS_CLIENT_NAMES.BIRTH_DT%type);
type tClieInstSlate is table of rClieInstSlate;
type uClieInstSlate is ref cursor return rClieInstSlate;
procedure prLocationSlateQry(
auLocaSlate in out uClieInstSlate, anCsNo in CMS_CLIENTS.CS_NO%type,
avClieNm in varchar2,
avSearchType in varchar2,
avLotyCd in CMS_LOCATION_TYPES.CD%type);
end pkg_f0015;
CREATE OR REPLACE PACKAGE BODY pkg_cms_f0015 is
procedure PRLocationSlateQry( auLocaSlate in out uClieInstSlate,
anCsNo in CMS_CLIENTS.CS_NO%type,
avClieNm in varchar2,
avSearchType in varchar2,
avLotyCd in CMS_LOCATION_TYPES.CD%type) IS
vSelect varchar2(5000);
vAddCond varchar2(1000);
vSupLevel varchar2(50);
begin
vSelect := 'select clie.ID,'||
' CLIENT_NAME,'||
' clie.CS_NO,'||
' clna.BIRTH_DT dob'
' from CMS_CLIENT_NAMES clna,'||
'CMS_CLIENTS clie'||
' where clna.CLIE_ID = clie.ID';
if avSearchType= 'C' then
vAddCond := ' and clie.CS_NO = nvl('||anCsNo||',clie.CS_NO)';
vSelect := vSelect || vAddCond;
open auLocaSlate for vSelect;
end if;
end PRLocationSlateQry;
end;
I wonder if what I want is possible

OK,
Now it works. Previously we had the parameter p_guid declared as RAW, which obviously is not any good. :)
Radovan
Edited by: biciste on Apr 28, 2009 4:57 PM

Module component based on pl/sql procedure....

Hi everyone,
could anybody help me with step by step instructions on how to generate module component which is based on PL/SQL procedure and how the procedure must look like.
Well, I make it in Forms Builder but I want to build it in oracle designer too, just to have consistent state of all forms in designer.
Well, what to say at the end... thanks a lot for help,
Zlatko

I'm a user of the Web PL/SQL generator, not the Forms generator, so I was hoping that someone else would step in with some help for you. Seeing as no-one else gave this a try, here is my two cents worth:
As far as I know, the module components based on a procedure expect to use the Table API (TAPI) packages, and I think they can optionally use the Module API (MAPI) packages. I think MAPI calls TAPI, so if you use MAPI, you must also generate TAPI. These are generated from the Design Editor, TAPI from the Table Definition. The Web PL/SQL generator REQUIRES the TAPI, so I'm very familiar with them. The on-line help has some good descriptions of TAPI.
The advantage of using TAPI/MAPI instead of direct table updates from your Form is that TAPIs can enforce business rules at the database level, no matter how your table is updated, whether with Forms, Web PL/SQL or even SQL*Plus. They can also do trigger-like actions that would not be possible with actual database triggers (can you say, mutating table?) You might also want to use TAPI if you have both Forms modules and Web PL/SQL modules against the same table.
Now - if someone with more Forms generator experience than I wants to chime in with a better answer, please do, especially if anything I said is wrong.

Generating webform based on pl/sql procedures

Who can tell me to solve the following problem with trigger-event 'QUERY_PROCEDURE':
I want te generate een webform base on pl/sql-procedures in stead of tables or views. In my module only query is allowed.
In order to implement the module I created a MAPI and a TAPI.
When i run the form i notice that my enter-query argument doesn't has any effect. All the records are shown instead of one. The fill of the 'default_where' clause has has no effect.
In formsbuilder i notice that only parameter 'bk_data' is given. The where_clause has been erased.
How can i run the MAPI-procedure 'qry' including a 'where_clause' on runtime?

Dear All,
This thread helped me a lot since I was facing the same problem and had a doubt that QBE is not supported by stored procedures (MAPI) and this thread confirms it.
BUT what about module components based on Queries (i.e. FROM clause) ?
It says in the Designer Forms Generation training material that is also does not support QBE, BUT forms supports QBE for blocks based on Queries is support in the Forms Developer.
When I added a WHERE restriction the designer generates this inside the FROM Clause property of the block rather than in the WHERE Clause property of the block, and so i receiver an error ORA-01008 not all variables bound.
Can anybody tell me how can i force designer to generate the WHERE restriction in the WHERE Clause property of the block rather than the FROM Clause property of the block?

ViewObject based on PL/SQL procedure

Hi there,
I'm using JDeveloper 11.1.1.6.0.
I'm wondering if i can base my ViewObject on a PL/SQL procedures out parameter instead of a SQL query?
It is also ok when the view object is not updateable.
Is there a way to achieve this? perhaps directly over the ViewObject, or otherwise over an EntityObject?
Thanks in advance.

Hi,
its quite a time ago but there are some information from Avrom
http://www.avromroyfaderman.com/framework-for-database-api-based-adf-bc/
The sourcecode was hosted on samplecode.oracle.com which seems not to be available....
Nevertheless you might find some usefull information on an older version
http://www.avromroyfaderman.com/framework-for-database-api-based-adf-bc/framework-for-package-api-based-adf-business-components/
Andreas.

Function Activity based on PL/SQL procedure

Hi All
I have a function activity in a workflow, which is based on a PL/SQL procedure. When I make any changes to the package or the stored procedure, workflow gives "Could not find package or program unit" error, even though the status of the package is valid in database.
Essentially everytime I re-apply the package, I get this error. I then drop the package and then recreate it. Even then the error is not resolved immediately. Does this requires Apache bounce? Is there any other step that I am missing when we make changes to database packages that are based on workflow activities?
It would be of great help if someone can throw light on the above.
Many thanks in advance
cheers
Murari

Hi,
Have you tried searching this forum for the error message? There are plenty of posts about it here, on the WorkflowFAQ forum, and also in my blog about the issue, why it happens, and how you can avoid it.
HTH,
Matt
WorkflowFAQ.com - the ONLY independent resource for Oracle Workflow development
Alpha review chapters from my book "Developing With Oracle Workflow" are available via my website http://www.workflowfaq.com
Have you read the blog at http://thoughts.workflowfaq.com ?
WorkflowFAQ support forum: http://forum.workflowfaq.com

N level tree based on PL/SQL procedure

Hi everyone,
I want to display a tree of n levels of employees (n is not known in advance) :
Root(Boss)
| Employee1
| Employee11
......... | Employee1NN...
| Employee12
| EmployeeN
.....| EmployeeNN..
The problem is that I don't have access to tables containing the employees. For each employee I get the "sub-employees" list by calling a PL/SQL stored procedure getEmployees(masterEmployeeName).
So is there a way in ApEx to create a n level and sublevel tree, each level corresponding to a PL/SQL procedure ?
Best regards,
Othman.

Hi Othman,
I haven't tried this for a while, the last time I had to do anything like this was to construct a folder structure starting from a root folder.
Assuming that you can retrieve ID's and employee names in your function, the principle would be something like:
1 - Create two collections - one for the Tree (to hold ID, Name and Parent ID) and one to hold a list of Employee IDs
2 - Into the Tree collection, create a new member and insert 0, Root, null (Where 0 is the ID for the top boss and Root is whatever name you need to give this), into c001, c002 and c003
3 - Into the Employee collection, create a new member and insert 0 into column c001
4 - Now create a loop to run while the Employee collection contains at least one member
5 - In the loop:
5 A) Get the value from c001 in the first member in the collection (this will be the "Parent ID")
5 B) run your function to retrieve a list of employees relating to that Parent ID, if any
5 C) Loop through the list and insert a member into the Tree collection: ID, Name, Parent ID and insert the employee's ID into the Employee collection
5 D) Delete the first member from the Employee collection and resequence the collection (to give you a new member number 1)
6 - Eventually, you will have no members left in the Employee Collection - your loop should terminate
7 - You should now have a complete structure in the Tree collection which can be used on the page
Regards
Andy

How to generate a form based on PL/SQL-procedures instead of tables?

Hi all,
I'm trying to generate a form based on a package, which has procedures for insert/update/delete/select. In Forms, this is no problem. It is unclear to me how to do this in Oracle Designer (10g). Online Help of Designer doesn't clear things up a lot, it seems I have to generate a table API and a module component API. But when I do this, these are generated as file and no definitions are created in Designer. So what do I base my block on?
Can somebody assist me in this?
Kind regards,
Ronald

Hi:
Thank you for reply to my question.
I have tried your codes and apply them the following the form. However, I always got the following error:
Error: (WWV-00000)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
My codes is:
declare
request_no number;
blk varchar2(30) := 'DEFAULT';
l_url varchar2(4000);
begin
request_no := p_session.get_value_as_NuMBER(
p_block_name => blk,
p_attribute_name => 'A_WORK_REQUEST_ID');
l_url := 'portal30.wwa_app_module.link?p_arg_names=_moduleid&p_arg_values=11880470335&p_arg_names=_sessionid&p_arg_values=&p_arg_names=work_request_id&p_arg_values='||request_no;
portal30.wwa_app_module.set_target(l_url,'call');
end;
then,
I created another form which has two fields and the dattype of pk is varchar2 and change manually put the pk's p_arg_value into the url.
e.g.
l_url:='PORTAL30.wwa_app_module.link?p_arg_names=_moduleid&p_arg_values=9029417810&p_arg_names=WORK_AREA_CD&p_arg_values=APP';
portal30.wwa_app_module.set_target(l_url,'call');
However, I still get the error message as below:
Error: (WWV-00000)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
No conversion performed for type INTEGER, value . (WWC-49102)
Your help would be highly appreciated.
Wei Ye

Reports based on PL/SQL Procedure/Function

Hi all,
After some serious Google and forum searches, it appears as if this is something that just isn't possible (or easy to do).
I've been charged with creating an APEX application that displays reports. There are a series of Procedures that will be written to return a result set, updated to take into account some filters that a user would provide. The key here is that the report won't be displayed until AFTER a user inputs some filters on a form and hits a Submit button. The project requires this functionality - allowing the report to be displayed and THEN filtered using the APEX IR Control is not desired (not my decision).
There doesn't seem to be an easy way to define a report in this manner. It appears that the query for a report query needs to be known ahead of time.
So, with that setup - is there a way to define an APEX report based on the return result of a PL/SQL function? OR is there a way to define a report using a SQL Query that is built based on user inputs?
Any help would be appreciated.
- Pedro

Hi,
Check if this post help you.
Dynamic html table
And normal reports can be also created from select that function is returning.
http://www.oracle.com/technology/products/database/application_express/howtos/dynamic_report.html
Br, Jari
Edit:
Maybe useful
http://www.apex-blog.com/oracle-apex/dynamic-report-regions-tutorial-32.html
http://www.oracleapplicationexpress.com/2009/02/interactive-report-based-on-plsql.html
Edited by: jarola on Sep 9, 2009 5:14 PM

Problems with creation of a block based on a procedure

Hi,
I have created a block based on a database procedure. This procedure has a PL/SQL table as IN OUT parameter.
I am able to create a multi-line text item and display the contents of the pl/sql table in it.
I want to edit the data in the text item and save it back into that pl/sql table.
I understand that i have to have a separate insert-procedure for doing that. Right?
Should this procedure be a database procedure?
My pl/sql table is contained in a package specification in the database.
From forms how can i access it?
When i tried it says 'cannot directly access remote package variable or cursor'.
Please can you help solve my problem?
Thanks,
Saju.

check out : http://www.summitsoftwaredesign.com/scripts/forms_blocks.html

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.

Troubleshooting blocks based on stored procedures

Hello,
I'm creating a form block that is based on a stored procedure. I've followed the steps in note 66887.1 "Basing a Block on a Stored Procedure - Sample Code", but am still having problems. Currently, the stored procedure runs successfully when I call it from SQL*Developer, but I receive a "FRM-40301: Query caused no records to be retrieved. Re-enter" when I run it from the form.
I'm not sure how to troubleshoot this problem. I tried using the Forms Debugger, but that didn't seem to provide any visibility to what Forms was doing. Can anyone suggest a way to troubleshoot problems like this?
Thanks,
Cindy

Hi Tony
Did youuse a REF CURSOR or table of records??I'm using a REF CURSOR.
Here's the signature of the procedure I'm specifying as the "Query Data Source Name":
PROCEDURE do_query(p_combined IN varchar2,
p_legal IN varchar2,
p_maiden IN varchar2,
p_preferred IN varchar2,
p_indrfn IN varchar2,
p_birthdate IN varchar2,
p_sex IN number,
p_unit IN number,
p_writingsys1 IN varchar2,
p_writingsys2 IN varchar2,
results IN OUT name_query_cur)
Here's the definition of the name_query_cur ref cursor type:
TYPE return_rec IS RECORD(
indrfn cms_name.naindrfn%TYPE,
legal varchar2(485),
maiden varchar2(485),
preferred varchar2(485),
birthdate varchar2(8),
unit cms_unit.ununit%TYPE,
sex cms_individual.insex%TYPE,
baptized cms_individual.inbaptized%TYPE,
priesthood cms_individual.inpriesthood%TYPE,
unitcountry cms_individual.inunitcountry%TYPE,
secured cms_individual.insecured%TYPE,
phsecured cms_individual.inphsecured%TYPE,
privilege cms_individual.inprivilege%TYPE,
confidential cms_individual.inconfidential%TYPE,
recordstatus cms_individual.inrecordstatus%TYPE
TYPE name_query_cur IS REF CURSOR RETURN return_rec;
Do you have all the columns listed in the Query Data Source Columns? In "Query Data Source Columns", I have listed all the columns of the ref cursor. So, I have the following columns specified there:
indrfn
legal
maiden
preferred
birthdate
unit
sex
baptized
priesthood
unitcountry
secured
phsecured
privilege
confidential
recordstatus
And did you set the Query Data Source Arguments??Yes, I set this to match the arguments to the do_query routine. I gave each argument the exact same name as it had in the do_query routine. So, this is currently set as:
p_combined IN varchar2 value=:control.combined
p_legal IN varchar2 value= :member_lov.legal
p_maiden IN varchar2 value= :member_lov.maiden
p_preferred IN varchar2 value= :member_lov.preferred
p_indrfn IN varchar2 value= :member_lov.indrfn
p_birthdate IN varchar2 value= :member_lov.birthdate
p_sex IN number value= :member_lov.sex
p_unit IN number value= :member_lov.unit
p_writingsys1 IN varchar2 value= 'Latn'
p_writingsys2 IN varchar2 value= left this blank
results IN OUT name_query_cur value=left this blank
The blocks based on the ref cursor should have all the items which arethere in the ref cursor type. If the number of items does not match the
individual items in the ref cursor type when you execute query you'll get FRM-40350 Query caused no records to be retrieved.
The items in the block exactly match the ref cursor. They are the exact same names, types, and in the exact same order as the ref cursor columns.
Make sure you have listed all the columns, and make sure your REF Cursor returns rows in SQL*Plus.The ref cursor returns rows in SQL*Plus, just not in Forms.
Can you see anything I've missed or done wrong?

Forms [32 Bit] Version 6.0.5.0.2 :: BLock based on stored procedure

Trying to develop a form having a block based
on stored procedure. My form works fine if
the stored procedure having REF CURSOR as one
of the argument but if I am using dynamic SQL
in my procedure I can not use Strong REF CURSOR, so I had to use Pl/Sql Table as one of the parameter in the proceudre.
In that case when I run my form and Execute the query it just comes out of the form without displaying anything and also it doesn't throw any error.
Don't know what I am doing wrong.
Pl. Help...
null

I drilled down the proble further and identified that i can
recreatr the problem in any 7.3.4 database ....
But in 8.0.5 it's working fine .....
Is developer 6.0 is going to support Oracle 7.3.4
it'll be highly appreciated if any one from Oracle development
team can give me a response
Thanks in advance...
Lebon Mathew (guest) wrote:
: Problem : If a block value is refered in
: a LOv - record group query
: the form cannot adjust the out put .. and
: is not generating.....
: Record group query which works :
: select security_role, sec_role_desc, database_role
: from security_role
: where wnd_appln = 'XXXXXXXXX'
: order by security_role, database_role
: Record group query which is not working :
: select security_role, sec_role_desc, database_role
: from security_role
: where wnd_appln = :APP_ROLES_BK.wnd_appln
: order by security_role, database_role
: Error Generated :
: FRM-30064: Unable to parse statement icrgg/icrggc: hicrg.
: Record Group SECURITY_ROLE_LOV
: Form: EMPLOYEE
: FRM-30085: Unable to adjust form for output.
: Table structure :
: CREATE TABLE security_role
: security_role VARCHAR2(15) NOT NULL,
: sec_role_desc VARCHAR2(20) NOT NULL,
: open_nsr VARCHAR2(1),
: open_pkt VARCHAR2(1),
: chg_wk_grp VARCHAR2(10),
: asgn_anlst VARCHAR2(10),
: updt_oth_wkgp_pkt VARCHAR2(1),
: admin_tasks VARCHAR2(1),
: create_po VARCHAR2(1),
: billing_changes VARCHAR2(1),
: invoice_changes VARCHAR2(1),
: change_owner VARCHAR2(1),
: wnd_appln VARCHAR2(15),
: database_role VARCHAR2(20)
: PCTFREE 10
: PCTUSED 40
: INITRANS 1
: MAXTRANS 255
: TABLESPACE wa0dat0t01
: STORAGE (
: INITIAL 32768
: NEXT 8192
: PCTINCREASE 0
: MINEXTENTS 1
: MAXEXTENTS 121
: w@w Lebon Mathew
: WellsFargo - Telecom Applications
: (415)-477 6445
null

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

How to pass multiple parameters while calling a pl/sql procedure based serv

Hi,
I have a pl/sql procedure based service that needs to be invoked from the bpel console for testing purpose. This procedure accepts multiple input values which are of varchar2,boolean and datetime data types. How can I get the bpel console to throw a UI where I can enter these values --in other words where(which file and where) can I specify that these are the input parameters that need to be entered along with their types.
Thanks for yr help!

Change the payload of the request 'Process WSDL' message type. Change the element of the payload for the RequestMessage to be 'InputParameters' from the XSD generated by the DB Adapter wizard.
Edit the payload (Element) - Choose 'Project Schema Files'. Select 'InputParameters' from the XSD.
You can also change the ResponseMessage by doing the same thing, except that you select 'OutputParameters' from the XSD.

Block based on PL/SQL Procedure

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