Programming concepts required to develop UDF?

Question

Hi Experts,
i've never created an UDF, but knows the procedure how to create it.....I want to know wht are the basic java packages are required and some basic functions like setParamter(), getParameter() etc. which are important to know being an XI developer. can anyone list down those function names along with some description and details of parameters are needed...
i've gone thru SAP Help but unable to locate any such functions.......
Regards
Faisal
points will b rewarded for useful answers
Edited by: Abdul Faisal on Apr 30, 2008 7:12 PM

Answer 1

Hi Abdil,
How to create user defined functions in xi.   
Go thru this -http://www.flickr.com/photos/8764045@N06
Please follow the steps mentioned in below link
http://help.sap.com/saphelp_nw04/helpdata/en/f8/2857cbc374da48993c8eb7d3c8c87a/frameset.htm
Also refer below links to know more about UDF
udf
/people/krishna.moorthyp/blog/2006/07/29/documentation-html-editor-in-xi
/people/sap.user72/blog/2006/02/06/xi-mapping-tool-exports
1. To create a new user-defined function, in the data-flow editor, choose Create New Function (This
graphic is explained in the accompanying text), which is located on the lower left-hand side of the
screen. In the menu, choose Simple Function or Advanced Function.
2. In the window that appears, specify the attributes of the new function:
Name
Technical name of the function. The name is displayed in the function chooser and on the data-flow
object.
Description
Description of how the function is used.
Cache
Function type (see above)
Argument Count
In this table, you specify the number of input values the function can process, and name them. All
functions are of type String.
3. In the window that appears, you can create Java source code:
a. You can import Java packages to your methods from the Imports input field, by specifying them
separated by a comma or semi-colon:
You do not need to import the packages java.lang., java.util., java.io., and java.lang.reflect. since
all message mappings require these packages and therefore import them. You should be able to
access standard JDK and J2EE packages of the SAP Web Application Server by simply specifying the
package under Import. In other words, you do not have to import it as an archive into the Integration
Repository. You can also access classes of the SAP XML Toolkit, the SAP Java Connector, and the
SAP Logging Service (see also: Runtime Environment (Java-Mappings)).
In addition to the standard packages, you can also specify Java packages that you have imported as
archives and that are located in the same, or in an underlying software component version as the
message mapping.
b. Create your Java source text in the editor window or copy source text from another editor.
4. Confirm with Save and Close.
5. User-defined functions are limited to the message mapping in which you created the function. To
save the new function, save the message mapping.
6. To test the function, use the test environment.
The new function is now visible in the User-Defined function category. When you select this category,
a corresponding button is displayed in the function chooser pushbutton bar. To edit, delete, or add the
function to the data-flow editor, choose the arrow next to the button and select from the list box
displayed.
Thanks,
Satya Kuamr
Reward if it is useful..