Use FOR... LOOP counter in the treatment of PL/SQL procedures with nest. Table

Hi all!
I learn PL/SQL on the book by Steve Bobrovsky (specified below, sample comes from it) and I have a question.

In the procedure of the below specified program used a currentElement integer variable to get the reference to the line in the nested table of data type % ROWTYPE.
Meanwhile, the program itself uses a common FOR... LOOP counter I have.

DECLARE
 TYPE partsTable IS TABLE OF parts%ROWTYPE;
 tempParts partsTable := partsTable();
 CURSOR selectedParts IS 
  SELECT * FROM parts ORDER BY id;
 currentPart selectedParts%ROWTYPE;
 currentElement INTEGER;
 PROCEDURE printParts(p_title IN VARCHAR2, p_collection IN partsTable) IS
  BEGIN
   DBMS_OUTPUT.PUT_LINE(' ');
   DBMS_OUTPUT.PUT_LINE(p_title || ' elements: ' || p_collection.COUNT);
   currentElement := p_collection.FIRST;
   FOR i IN 1 .. p_collection.COUNT
   LOOP
    DBMS_OUTPUT.PUT('Element #' || currentElement || ' is ');
     IF tempParts(currentElement).id IS NULL THEN DBMS_OUTPUT.PUT_LINE('an empty element.');
     ELSE DBMS_OUTPUT.PUT_LINE('ID: ' || tempParts(currentElement).id || ' DESCRIPTION: ' || tempParts(currentElement).description);
     END IF;
    currentElement := p_collection.NEXT(currentElement);
   END LOOP;
 END printParts;
BEGIN
 FOR currentPart IN selectedParts
 LOOP
  tempParts.EXTEND(2);
  tempParts(tempParts.LAST) := currentPart;
 END LOOP;
 printParts('Densely populated', tempParts);
 FOR i IN 1 .. tempParts.COUNT
 LOOP
  IF tempParts(i).id is NULL THEN tempParts.DELETE(i);
  END IF;
 END LOOP;
 FOR i IN 1 .. 50
 LOOP
  DBMS_OUTPUT.PUT('-');
 END LOOP;
 printParts('Sparsely populated', tempParts);
END;
/

When I substituted a global variable of INTEGER type such for... The LOOP counter, an APEX have returned an error "ORA-01403: no data found.

DECLARE
 TYPE partsTable IS TABLE OF parts%ROWTYPE;
 tempParts partsTable := partsTable();
 CURSOR selectedParts IS 
  SELECT * FROM parts ORDER BY id;
 currentPart selectedParts%ROWTYPE;
 PROCEDURE printParts(p_title IN VARCHAR2, p_collection IN partsTable) IS
  BEGIN
   DBMS_OUTPUT.PUT_LINE(' ');
   DBMS_OUTPUT.PUT_LINE(p_title || ' elements: ' || p_collection.COUNT);
   FOR i IN 1 .. p_collection.COUNT
   LOOP
    DBMS_OUTPUT.PUT('Element is ');
     IF tempParts(i).id IS NULL THEN DBMS_OUTPUT.PUT_LINE('an empty element.');
     ELSE DBMS_OUTPUT.PUT_LINE('ID: ' || tempParts(i).id || ' DESCRIPTION: ' || tempParts(i).description);
     END IF;
   END LOOP;
 END printParts;
BEGIN
 FOR currentPart IN selectedParts
 LOOP
  tempParts.EXTEND(2);
  tempParts(tempParts.LAST) := currentPart;
 END LOOP;
 printParts('Densely populated', tempParts);
 FOR i IN 1 .. tempParts.COUNT
 LOOP
  IF tempParts(i).id is NULL THEN tempParts.DELETE(i);
  END IF;
 END LOOP;
 FOR i IN 1 .. 50
 LOOP
  DBMS_OUTPUT.PUT('-');
 END LOOP;
 printParts('Sparsely populated', tempParts);
END;
/

When I tried to manage this code in SQL * Plus, the following picture emerged:

Densely populated elements: 10
Element is an empty element.
Element is ID: 1 DESCRIPTION: Fax Machine
Element is an empty element.
Element is ID: 2 DESCRIPTION: Copy Machine
Element is an empty element.
Element is ID: 3 DESCRIPTION: Laptop PC
Element is an empty element.
Element is ID: 4 DESCRIPTION: Desktop PC
Element is an empty element.
Element is ID: 5 DESCRIPTION: Scanner
--------------------------------------------------
Sparsely populated elements: 5
DECLARE
*                                                 
ERROR at line 1:                                  
ORA-01403: no data found                          
ORA-06512: at line 14                             
ORA-06512: at line 35

What's not in the code (or what I did not understand)? Help please!

Your error occurs because you are dealing with a sparsely populated collection and using an index for items that do not exist.

For collections of the low density of population, you must iterate through using FIRST and THEN as modeled not from 1 to COUNT.

The crucial difference between your code and the example is:

tempParts(i)

Which, as you have demonstrated, doesn't work very well (!) if there is no item (i).

The code example is a little unusual in my opinion.

   currentElement := p_collection.FIRST;
   FOR i IN 1 .. p_collection.COUNT
   LOOP
    ...
    currentElement := p_collection.NEXT(currentElement);
   END LOOP;

It works, but it's an unusual way to iterate through a collection of rare which is perhaps most often done like this:

   currentElement := p_collection.FIRST;
   WHILE(currentElement IS NOT NULL)
   LOOP
    ...
    currentElement := p_collection.NEXT(currentElement);
   END LOOP;

Which is perhaps less open to confusion.

In the end, the distinction between

tempParts(currentElement).id

and

tempParts(i).id

is crucial.

Tags: Database

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create or replace type type_table1 as object(var1 varchar2(50),var2 varchar2(50))
/
create or replace type type_table2 as table of type_table1
/
create or replace PROCEDURE TEST_PROCEDURE1 (p_cursor IN OUT SYS_REFCURSOR)
AS
BEGIN
OPEN p_cursor FOR
SELECT ENAME,JOB FROM EMP;
END;
/
create or replace function test_function1 (rc in sys_refcursor )
return type_table2 is
v_emptype type_table2 := type_table2(); -- Declare a local table structure and initialize it
v_cnt number := 0;
v_var1 varchar2(20);
v_var2 varchar2(20);
begin
if rc%isopen
  then
    dbms_output.put_line('rc is open');
  else
    dbms_output.put_line('rc is not open');
 end if;
loop
fetch rc into v_var1, v_var2;
exit when rc%NOTFOUND;
v_emptype.extend;
v_cnt := v_cnt + 1;
v_emptype(v_cnt) := type_table1(v_var1, v_var2);
end loop;
close rc;
return v_emptype;
end;
/
variable rc refcursor
exec TEST_PROCEDURE1(:rc)
set serveroutput on
SELECT * FROM TABLE(test_function1(:rc))
/
SELECT * FROM TABLE(test_function1(:rc))
                    *
ERROR at line 1:
ORA-01001: invalid cursor
ORA-06512: at "SCOTT.TEST_FUNCTION1", line 15

rc is not open
SQL>

Now IN OUT parameter edit mode:

set serveroutput off
create or replace function test_function1 (rc in out sys_refcursor )
return type_table2 is
v_emptype type_table2 := type_table2(); -- Declare a local table structure and initialize it
v_cnt number := 0;
v_var1 varchar2(20);
v_var2 varchar2(20);
begin
if rc%isopen
  then
    dbms_output.put_line('rc is open');
  else
    dbms_output.put_line('rc is not open');
 end if;
loop
fetch rc into v_var1, v_var2;
exit when rc%NOTFOUND;
v_emptype.extend;
v_cnt := v_cnt + 1;
v_emptype(v_cnt) := type_table1(v_var1, v_var2);
end loop;
close rc;
return v_emptype;
end;
/
variable rc refcursor
exec TEST_PROCEDURE1(:rc)
set serveroutput on
declare
v_emptype type_table2 := type_table2();
begin
v_emptype := test_function1(:rc);
end;
/
rc is open

PL/SQL procedure successfully completed.

SQL>

Problem is that you can't call the procedure/function with parameters in/out OUT of SQL.

SY.

Is it possible to implement the sequences to browse to project with several tables of contents and conditionalized modules

I use RoboHelp 9 with WebHelp output.
I have five outings, which one contains help for common functions, while the other four contain help for modules under license. When a user opens a module under license assistance, the user sees the soul help and authorized assistance. In addition, the files are conditionalized so that the unauthorized search a help licensed module brings nothing.
I have been solving problems with the previous topic and the next topic which, thanks William, I learned are associated with browse sequences. After having tried various configurations, I have a few questions:
- HR support a sequence to travel alone in a project, even when the project has several outputs & fakes?
- If HR supports a sequence to browse only, does that mean that there is no way to create a unique navigation for each separate output sequence?
- If HR supports several sequences of travel, which is the workflow?
I also maintain a table of 'master' contents which contains all the modules, frequent and without a license. What I've done for now is to autocreate a browse sequence based on the table of contents "master." When I generate the output of a module under license, which is conditionalized, I only see the table of contents for this module and, therefore, can only travel between books and subbooks for this add-on. I also checked that the subjects that do not appear in the module conditionalized as for another module licensed, do not appear in the list of search results either.
Carol

Me again, Carol

You also questions about the functional differences between WebHelp and WebHelp Pro, so let me explain.

I know only two major differences other than (the additional benefits of analytical feedback reports) and the management of 'Zones' with authentication in RoboHelp Server.
1. The behavior of browse sequences as explained above
2. The fact that the categories of content are not supported in WebHelp Pro for this latest version 9.
In regards to sequences to browse you try to anticipate the various modules (licensed, etc.): multiple browse sequences are included in an single . File BRS. Sequences are defined in the XML code in the single file.

As a solution (for WebHelp and WebHelp Pro), you could create a Help.brs of the NPM. that you have already created a module; then backup and archive. Then create a change for the different module before generating again. The Help.brs of the NPM. will need to have the same name as your project, so you will have to manage the .brs desired file in the project folder when you build this version. All your other choices (table of contents, Index, conditional tags, etc) remains the same for the respective modules.

Finally, I notice that you generate apparently WebHelp Pro right now even if you are not published on the server of HR? This is really not the best practice. You must generate WebHelp plain for a web server that has no HR server on it (even if you can be getting away with it). Regarding your concern about "breaking" something; each output is placed in another! SSL! folder automatically when you build, so you should be able to generate WebHelp without interfering with the release of WebHelp Pro. Then, you can republish on the HR using WebHelp Pro Server, whenever the server is ready.

John Daigle

Adobe Certified RoboHelp and Captivate instructor

Evergreen, Colorado

www.showmethedemo.com

Call the PL/SQL procedure with different parameters?
I use PL/SQL for web development. I have a page of PL/SQL which collects information and returns the user off site with one return url (another PL/SQL procedure).

I have the return procedure with every documented return variable (default null) in order to always take the return. However, there are (reported... cannot reproduce because of the nature of the business) cases where a 404 error is returned because of the incompatibility of parameter.

Is it possible to proceed regardless of the parameters? Someone at - it suggestions?

Thank you!
user2960509 wrote:

My problem is that they sometimes send back of settings that do not match what I expect.

Use the interface "+ flexible +" mod_plsql - see the Oracle® HTTP Server mod_plsql user's Guide for the documented details.

The signature of the procedure parameter is as follows (it is called by mod_plsql using tables of name value pairs):
```
create or replace procedure Scott.MyWebProc( name_array owa.vc_arr, value_array owa.vc_arr) is
...
```
In your code, you just browse the berries to get the name values passed query string. You can even filled an associative array in your code (a table indexed by string and no number, where the index string represents the name of param)-this approach can make it pretty easy for the code make reference to a parameter, with little effort on your part to provide an interface to query by name for code to get the value of a parameter name.

To enable the flexible (aka parameter 2) call interface, precede the call to web with an exclamation character. For example
```
http://my-webserbver.my-domain.com/pls/dad/!scott.mywebproc?name-1=val-1&name-2=val-2..,name-n=val=n
```

Use FOR... LOOP counter in the treatment of PL/SQL procedures with nest. Table

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