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

Similar Messages

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.
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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
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is server-processed.
Does anyone know where to look for documenation on basing a
block on stored procedures ? The online help does not contain
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Has anyone used this technique successfully and can tell me
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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

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.

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Hi All
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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?
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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

Generating webform based on pl/sql procedures

Who can tell me to solve the following problem with trigger-event 'QUERY_PROCEDURE':
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Advanced:   How to traverse a tree representation in PL/SQL (procedure)?

I am looking to write a method that will create a collection of records, each of which represents a node in a tree.
TYPE t_all_folders IS TABLE OF get_all_folders%ROWTYPE INDEX BY PLS_INTEGER;
v_all_folders t_all_folders;
so first need help in figuring out what the cursor 'get_all_folders' would look like
I have a folder structure represented in a database that is used basically to show visually
(with a front end app) a folder structure (much like a folder structure in a file system).
So each row has an entry in the 'folders' table like do:
table folder:
     column           column
     folder_id          name
     1                    folder1               <= say this is a root folder
     2                    folder2               <= say this is a root folder
     3                    folder3               <= say this is a root folder
     4                    folder1a          <= all below are child folders..
     5                    folder1b
     6                    folder1c
     7                    folder1aa
     8                    folder1ab
     There is nothing in this table that indicates a hiearchy.
The hiearchy is represented by another single table with two columns
(I cannot change this, it is what it is)
There is no left node or right node (not like a tree), just imagine sub folders.
table: parent_child
     column          column
     parent_id     child_id
such that visually when the tables are queried and the UI uses a folder icon to
represent each row:
it would look like this:
     folder1                              1
          - folder1a                         2
               -folder1aa                    3
               - folder1ab                    4
          - folder1b                         5
               - folder1ba                    6
               - folder1bb                    7
          - folder1c                         8
     folder2                              9
     folder3                              10
I am attempting to create a query that will add to a collection folder records in the
order above (1..10)
In other words traverse the tree depth first going from:
          folder1 -> folder1a -> folder1aa -> folder1ab ->(back out to next level) folder1b -> folder1ba -> folder1bb -> folder1c
          then add folder2 (and traverse down that hiearch if needed)
          and then add folder3 to the colleciton and traverse down that hiearchy if there is one
          and continue adn so on.
          The requirement is to have them added to the collection in that order and when I iterate through the collection,
          they would of course need to be pulled out in that order (so use vararray with a counter to iterate through
          after the collection has been created.
After the collection has been created, I have to iterate in that specific order to create records in another table where there is a column that requires an integer value that is the 1... order they come out of the collection
and then have to iterate again and do something else in that order (and then other things - all the while needing in that order).
Edited by: user12200443 on Nov 19, 2012 11:49 AM

awesome, thanks for the help.
put this in 'schema.sql' and run to create a reference schema and data for the example
drop sequence seq_folders;
CREATE SEQUENCE seq_folders
INCREMENT BY 1
MINVALUE 1
START WITH 1
CACHE 1000;
drop table folders;
create table folders (
     folder_id number not null,
     name varchar2(20) not null
drop table parent_child;
create table parent_child (
     parent_id number not null,
     child_id number not null);
-- creation order (in order to have parent)
-- folder1
-- folder2
-- folder3
-- folder1a
-- folder1b
-- folder1c
-- folder1aa
-- folder1ab
-- folder1ac
-- folder1aaa
-- folder1aba
-- folder1aab
-- folder1abb
-- folder1aac
-- folder1abc
-- Visual hiearchy
-- folder1                              1
--      folder1a                         2
--           folder1aa               3
--                folder1aaa          4
--                folder1aab          5
--                folder1aac          6
--           folder1ab               7
--                folder1aba          8
--                folder1abb          9
--           folder1ac               10
--      folder1b                         11
--      folder1c                         12
-- folder2                              13
-- folder3                              14
--- insert folders
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder2');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder3');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1a');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1b');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1c');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1aa');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1ab');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1ac');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1aaa');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1aba');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1aab');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1abb');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1aac');
insert into folders(folder_id, name) values(seq_folders.nextval, 'folder1abc');
commit;
-- setup hiearchy
insert into parent_child(parent_id, child_id) values (0, (select folder_id from folders where name = 'folder1'));
insert into parent_child(parent_id, child_id) values (0, (select folder_id from folders where name = 'folder2'));
insert into parent_child(parent_id, child_id) values (0, (select folder_id from folders where name = 'folder3'));
-- 1a,1b,1c
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1'), (select folder_id from folders where name = 'folder1a'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1'), (select folder_id from folders where name = 'folder1b'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1'), (select folder_id from folders where name = 'folder1c'));
-- aa,ab,ac
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1a'), (select folder_id from folders where name = 'folder1aa'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1a'), (select folder_id from folders where name = 'folder1ab'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1a'), (select folder_id from folders where name = 'folder1ac'));
-- aaa,aba,aab
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1aa'), (select folder_id from folders where name = 'folder1aaa'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1aa'), (select folder_id from folders where name = 'folder1aab'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1aa'), (select folder_id from folders where name = 'folder1aac'));
-- aba,abb,abc
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1ab'), (select folder_id from folders where name = 'folder1aba'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1ab'), (select folder_id from folders where name = 'folder1abb'));
insert into parent_child(parent_id, child_id) values ((select folder_id from folders where name ='folder1ab'), (select folder_id from folders where name = 'folder1abc'));
commit;
then run this to get the error message
WITH joined_data     AS
     SELECT     f.folder_id,     f.name,     pc.parent_id
     FROM     folders     f
     JOIN     parent_child     pc ON pc.child_id = f.folder_id
SELECT     j.*,     ROWNUM
AS r_num
FROM joined_data     j
START WITH     parent_id =0
CONNECT BY     parent_id= PRIOR child_id
ORDER SIBLINGS BY     name;
thanks for the help, hopefully I can find a way to read the rows/record into a data structure (does not have to be a single sql statement - can be anything I can do in PL/SQL.
Edited by: user12200443 on Nov 19, 2012 5:55 PM

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

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

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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)
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blk varchar2(30) := 'DEFAULT';
l_url varchar2(4000);
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p_block_name => blk,
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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

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Hi,
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Hi!
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avClieNm in varchar2,
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anCsNo in CMS_CLIENTS.CS_NO%type,
avClieNm in varchar2,
avSearchType in varchar2,
avLotyCd in CMS_LOCATION_TYPES.CD%type) IS
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vAddCond varchar2(1000);
vSupLevel varchar2(50);
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' CLIENT_NAME,'||
' clie.CS_NO,'||
' clna.BIRTH_DT dob'
' from CMS_CLIENT_NAMES clna,'||
'CMS_CLIENTS clie'||
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if avSearchType= 'C' then
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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

Include Button that executes PL/SQL procedure to SQL query based region

I would like to add two columns to a SQL query region.
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For example, I would like to have a manager approve or deny adding an additional employee to the department.
There would be one button for APPROVE. And, one button for DENY.
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Is there any way to add a button to a SQL Query based report region where that button executes a stored proc? If so, what is the basic process for doing this?Conditional page item? You can associate processes with buttons on a page

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There is also a report region that generates a table based on the department selected from the select list (if the user is an admin) or the value stored in the hidden form field if the user is not.
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I would love to be able to generate my menus and
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Users should have the ability to write server-side
code wherever they feel like it. The way htmlDB works
right now I spend more time trying to figure out how
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Fusion in like 1/10 of the time that it takes me to
build one using htmlDB. I understand that this is not
meant for the hard-core programmer but no web
programming application in today's day and age should
prevent experts from getting under the hood.And I can build a Portal in HTML DB in 1/10 the time it will take me to do it in any other language. It's like anything else - proficiency comes with practice and work.
As for getting under the hood, there is plenty of places you can do that with HTML DB. Keep in mind that HTML DB itself is an HTML DB application, so the limits on what you can build with HTML DB are virtually limitless.
Sorry for the vent there. After spending the last 2
days trying to figure out how to implement such a
straightforward thing and now being informed that it
can't be done kind of bugged me.I understand your frustration, as I've been there before. My rule for beginners is that if you are writing more than a line or two of code in the first week, you're doing something wrong. Stop, take a break, and then use the ample resources (including searching this forum) to help solve your problem. There are plenty of resources available for you to learn about HTML DB on the HTML DB home page: http://otn.oracle.com/htmldb
Good luck,
- Scott -

Call PL/SQL procedure from htmldb_delete_message Javascript

Hi Guys,
I am a bit of a novice when it come to JavaScript; I have written a PL/SQL procedure that deletes multiple records based on a primary key:
PROCEDURE clear_alterations (p_eco IN VARCHAR2)
IS
BEGIN
DELETE FROM xxmel_apex_eco_alterations
WHERE eco = p_eco;
END clear_alterations;
I can run that straight from a normal button, but I want the htmldb_delete_message dialog box to pop up to confirm whether to delete or not. When the user clicks 'OK' I want the record to be deleted and if cancel, do nothing.
I have managed to get the confirmation box to appear but cant see how to call the PLSQL based on the 'OK' button being pressed.
Any help would be great,
Thanks
Chris

Hi Cashy,
By using Ajax you can call that process. Create that process as a application process. If you are using ApEx4.0 you can create that process as page level.
This stuff you can call on the population of the delete message...check for the id through javascript then call the function.
Thanks and Regards
Maheswara

Best Practice for ViewObjects when inserting data through pl/sql procedure

My applications is oracle form based enterprise level application and we are now developing new module in ADF 11g but there is restriction that all data insertion, updation, and deletion will be through oracle pl/sql procedures. Now my question is that adf pages should be binded with ViewObjects based on Entity Object or with Viewobjects not based on Entity / sql query. Currently I have developed pages with programmatic ViewObjects which are neither based on Entity Objects nor on sql query. In those view objects, i create transient attributes and then used it to create adf pages. Then on save, i extract the data from ViewObject's current row and pass it to procedure. This is working fine but just wondering whether this approach is ok or there is better alternative for that. Ideally i want to create ViewObjects based on EntityObject but don't finding any way to synchronize entityObjects with data inserted through procedures.

Hi,
I create a EO for the Database-View and override the doDML()-Method. For insert/update and delete I call the pl/sql-functions.
See "38.5 Basing an Entity Object on a PL/SQL Package API" in Oracle® Fusion Middleware Fusion Developer's Guide for Oracle Application Development
Framework.

N level tree based on PL/SQL procedure

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