Does LDS 1.1 Support use-defined functions?

Does LDS 1.1 Support use-defined functions? I'm working with the W3C use case
REL Q12 which fails with the function, but succeeds if I "inline" the function.

LD 1.1 does not support User Defined Functions. This feature was omitted for performance
reasons.
- Mike
"Mark Maxey" <[email protected]> wrote:
>
Does LDS 1.1 Support use-defined functions? I'm working with the W3C
use case
REL Q12 which fails with the function, but succeeds if I "inline" the
function.

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File scenario error in Used defined function

Hi Everyone,
I was doing file to file scenario, i want to get the same source file name in target also.
I created the structure as FileName, Company, Address. I did direct mapping for Company and Address
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I mentioned the following code in Used defined function
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When i test the mapping in IR, with sample data, i am getting this error.
RuntimeException in Message-Mapping transformation: Runtime exception during processing target field mapping /ns0:Target_File_MT/FileName. The message is: Exception:[java.lang.NullPointerException] in class com.sap.xi.tf._Source_File_to_Target_File_MM_ method DynamicFile$[, com.sap.aii.mappingtool.tf3.rt.Context@1763e46]
Could anyone please help me with the issue.
I have done only IR part, I didnot configured ID.
Regards,
Varun.

HI,
Check Adapter Specific Message attributes.This blog will help you
The specified item was not found.
You can also go for variable substitution :-
When you specify the target directory and file name schema, you have option of setting variables and defining them in a table. The variables are replaced by elements from the XML structure at runtime.
http://help.sap.com/saphelp_nw2004s/helpdata/en/8e/464442c1a1c253e10000000a1550b0/content.htm
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Edited by: ALAN WANG on Sep 16, 2008 10:44 AM

HI,
Check Adapter Specific Message attributes.This blog will help you
The specified item was not found.
You can also go for variable substitution :-
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create or replace
FUNCTION FACTORIAL
n IN NUMBER
RETURN NUMBER IS
val NUMBER :=1;
tem number :=n;
BEGIN
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END LOOP;
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cames the error message:
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How to use a user defined function in XI

Hi Experts,
I would like learn how to use a user defined function in Xi during mapping . Is there any step by step on that.
Besides during when me make communcaton channels I see the following tabs...Paramters ..Identifiers ...Module...
The module that is given here ...where and how it is used.

Hi,
You can write UDFs in java in Graphical mapping to enhance your XI Graphical mapping functionality
The steps for doing it would be:
1. Click on Create New function Button found on Bottom left corner on your XI Mapping window.
2. Write your java code.
3. Run the Mapping Test as usual.
>>The module that is given here ...where and how it is used.
The adapters in the Adapter Framework convert XI messages to the protocols of connected external systems and the other way around. When doing so, some
functionality might need to be added specific to a situation which is possible with the use of custom modules.
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<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/da5675d1-0301-0010-9584-f6cb18c04805">How to develop a module for reading file name in a sender file adapter XI 3.0</a>
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Hi
I did the following test to see how expensive it is to use user defined functions in SQL queries, and found that it is really expensive.
Calling SQRT in SQL costs less than calling a dummy function that just returns
the parameter value; this has to do with context switchings, but how can we have
a decent performance compared to Oracle provided functions?
Any comments are welcome, specially regarding the performance of UDF in sql
and for solutions.
create or replace function f(i in number) return number is
begin
return i;
end;
declare
l_start   number;
l_elapsed number;
n number;
begin
select to_char(sysdate, 'sssssss')
    into l_start
    from dual;
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    select max(rownum)
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select to_char(sysdate, 'sssssss')
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    from dual;
for i in 1 .. 20 loop
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select to_char(sysdate, 'sssssss')
    into l_start
    from dual;
for i in 1 .. 20 loop
    select max(f(rownum))
      into n
      from t_tdz12_a0090;
end loop;
select to_char(sysdate, 'sssssss') - l_start
    into l_elapsed
    from dual;
dbms_output.put_line('third: '||l_elapsed);
end;
Results:
   first: 303
   second: 1051
   third: 1515
Kind regards
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I find that inline SQL is bad for performance but
good to simplify SQL. I keep thinking that it should
be possible somehow to use a function to improve
performance but have never seen that happen.inline SQL is only bad for performance if the database design (table structure, indexes etc.) is poor or the way the SQL is written is poor.
Context switching between SQL and PL/SQL for a User defined function is definitely a way to slow down performance.
Obviously built-in Oracle functions are going to be quicker than User-defined functions because they are written into the SQL and PL/SQL engines and are optimized for the internals of those engines.
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performance, shaving microseconds off execution time.
Consider using the NOCOPY hints for your parameters
to use pointers instead of copying values. NOCOPY
is a hint rather than a directive so it may or may
not work. Optimize any SQL in the called function.
Don't do anything in loops that does not have to be
done inside a loop.Well, yes, but it's even better to keep all processing in SQL where possible and only resort to PL/SQL when absolutely necessary.
The on-line documentation has suggested that using a
DETERMINISTIC function can improve performance but I
have not been able to demonstrate this and there are
notes in Metalink suggesting that this does not
happen. My experience is that DETERMINISTIC
functions always get executed. There's supposed to
be a feature in 11g that acually caches function
return values.Deterministic functions will work well if used in conjunction with a function based index. That can improve access times when querying data on the function results.
You can use DBMS_PROFILER to get run-time statistics
for each line of your function as it is executed to
help tune it.Or code it as SQL. ;)

How to use StreamTransformationException in user-defined function?

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Error in conditional map using User Defined Function

All,
In my mapping I basically have a user defined function that returns the filename of my inbound file from the adapter-specific message attributes (file adapter). I know this is coded properly because if I simply assign this function to my destination field I can see the filename in the payload XML.
However if I conditionally check that returned value using if,then,else I get an error message stating:
"During the application mapping com/sap/xi/tf/_MaterialData2ZcustProdMastMulti_ a com.sap.aii.utilxi.misc.api.BaseRuntimeException was thrown: RuntimeException in Message-Mapping transformation"
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Can you give yourself points for solving

Does LDS 1.1 Support use-defined functions?

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