Looking for an example of "function that returns the error text.

Environment: APEX 3.1.1.00.09 on AIX 5.3

I'm looking for an example implementation of the posting of the "function that returns the error text.

I would like to write a database function that does the validation logic and return the text of the error.

Is it possible to create multiple lines of text of error based on error conditions?

I'm trying to use it at the end of the input data to go on the set of the 'document' to the entry and highlight all error conditions encountered before the 'document' is subject to additional processing.

I wrote the function and reference it in a posting as ' validate_stuff (: P3_DOC_SEQ); »

I have an error message "validate_stuff is not a procedure or is not defined.

The object is a function, not a procedure. It is defined to return a parameter VARCHAR2 hoped posting if it is not NULL.

When I run the SQL function * more and spend in a number of documents are returned the correct error messages.

Any direction is greatly appreciated.

-gary

Hi Gary,.

You must RETURN the result of the function:

BEGIN
 RETURN validate_stuff(:P3_DOC_SEQ);
END;

Andy

Tags: Database

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Go to a function that returns a Boolean

Short version of the question: Boolean values can be returned by a pl/sql function?
I've implemented a short function which returns a Boolean value; When I compile it I get an error:
Error report:
ORA-06550: line 5, column 32:
PLS-00382: expression is of the wrong type
ORA-06550: line 6, column 4:
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* Cause: Usually a PL/SQL compilation error.
* Action:
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EDIT

I was aware of the fact I had not provided examples of code - and was just one question fairly open. I hope that this example will show what does not work!

I have a function that returns a Boolean value:

create or replace
FUNCTION myFunc (s_in IN VARCHAR2) RETURN a Boolean value
IS
s_out BOOLEAN: = TRUE;
BEGIN
RETURN s_out;
END FUNCTION3;
I try and call the function in the following script:
DECLARE
s_in varchar2 (20): = "Hello";
s_out boolean;
BEGIN
SELECT myfunction (s_in) INTO s_out FROM DUAL;
END;
That's when I get the error. But sorry, I was looking for too many error messages! I have worked that the one I posted above is because put_line can accept only strings and numbers not Boolean, the mistake that this function returns is:
ORA-06550: line 5, column 32:
PLS-00382: expression is of the wrong type
ORA-06550: line 5, column 11:
PLS-00382: expression is of the wrong type
06550 00000 - "line %s, column % s:\n%s".
* Cause: Usually a PL/SQL compilation error.
* Action:
However, I suppose that the comment of Frank Kulash is perhaps the reason why I see this?

Post edited by: 2922851

Hi, Chris,.

2922851 wrote:

Short version of the question: Boolean values can be returned by a pl/sql function?

Sure. If you are having problems, post your code (both the function and some PL/SQL that calls it).

The BOOLEAN data type exists only in PL/SQL, not in SQL, so if the function returns a BOOLEAN value, then you can't call it in a SQL statement, even if this SQL statement is used within PL/SQL. For this reason, a lot of guys write functions that return a NUMBER (1 or 0) or a string (' t ' or 'F') rather than return a BOOLEAN value.

I've implemented a short function which returns a Boolean value; When I compile it I get an error:

Error report:

ORA-06550: line 5, column 32:

PLS-00382: expression is of the wrong type

ORA-06550: line 6, column 4:

PLS-00306: wrong number or types of arguments in the call to "PUT_LINE '.

ORA-06550: line 6, column 4:

PL/SQL: Statement ignored

06550 00000 - "line %s, column % s:\n%s".

* Cause: Usually a PL/SQL compilation error.

* Action:

This error indicates a problem calling put_line; It has nothing to do with what returns the function.

How to expose a function that returns a XML as a Web Service?

---------------------------------------------------------------------------------
Oracle Database 11 g Release 11.2.0.3.0 - 64 bit Production
PL/SQL Release 11.2.0.3.0 - Production
"CORE 11.2.0.3.0 Production."
AMT for 64-bit Windows: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
---------------------------------------------------------------------------------

After reviewing the documentation of oracle on the generation of xml data in the database, I managed to select normal tables and return a result xml exactly as I want:

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create or replace 
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create or replace 
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<Parent ID="1">
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) RETURN CLOB
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As you can see, I just need a simple way to transport information between a Windows CE handheld computer and our database. Use functions that return simple values.
Do I have to return the data as xml?
What return value I should use? Varchar2 throws a buffer error output.

---------
It is my first post here, also my first contact with OracleDB, and Web Services.

Hello

Welcome to Oracle and XML DB!

After reviewing the documentation of oracle on the generation of xml data in the database, I managed to select normal tables and return a result xml exactly as I want:

Have you also read about the SQL/XML functions?
You don't have to create objects of type SQL to generate XML data.

Using only XMLElement, XMLAgg, XMLAttributes, etc., you should be able to generate any kind of structure complex relational data and with total control over the names (which you don't have with the types of objects).
Your example can be rewritten to:

SELECT XMLElement("Parent",
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                        , c.name as "Name"
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             WHERE c.parent_id = p.id
           )
         )
       )
FROM parent p
WHERE p.id = :parent_id ;

It's perfect, but how to expose this result as a Web Service like this link?
[...]
Do I have to return the data as xml?

Yes.
Define the return as XMLType data type:

FUNCTION GET_CHILDREN (
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)
RETURN XMLTYPE
AS
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Thanks for the help
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How to call a function that returns a SYS_REFCURSOR?

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Hello

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HTH
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