User defined functions with examples

[Former Member]

Hi,

Being am a trainee i didnt understand much about the user-defined functions at my training period..

Will you plz tell about them with best examples as u developed in real time and their requirement in scenario..

I tried for them very much in SDN..that is not statisfactory

Regards

guna

[Former Member]

Hi Gunashekar,

UDF user defined function in graphical mapping if ur business requirements are not fulfiled by std functions.

UDF's are user defined functions are of two types,simple UDF which takes in one input and gives out one output and the second one is advanced UDF where in u can access more than one fields,and the result is passed on to ResultList.

UDF can be used in graphical mapping depends upon the requirement.

1) If u wanted to do manuplication in data which can not be done by using the standared XI function that time we go for UDF.

2) For doing Lookup we write the code in UDF and pass the value to R3 system.

Lookup - /people/alessandro.guarneri/blog/2006/03/27/sap-xi-lookup-api-the-killer

DB lookup - /people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler

SOAP Lookup - /people/bhavesh.kantilal/blog/2006/11/20/webservice-calls-from-a-user-defined-function

3) If u need to compare the input value and pass the other value based on comparision that time can go for UDF.

here u need to write

if(A.equals("somevalue"))

{

output Somevalue

}

else

{

output different value

}

4) IF u have a requirement where u need to dynamically take the value from file adapters then u write UDF.

/people/michal.krawczyk2/blog/2005/11/10/xi-the-same-filename-from-a-sender-to-a-receiver-file-adapter--sp14

/people/william.li/blog/2006/04/18/dynamic-configuration-of-some-communication-channel-parameters-using-message-mapping

There are many different requirement for which we can go ahead with UDF.

For business requirement and business logic we have to write UDFs.check some exaples.

UDF

http://flickr.com/photos/8764045@N06/

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/be05e290-0201-0010-e997-b6e...

Example 1

http://www.flickr.com/photo_zoom.gne?id=544183191&size=o

http://www.flickr.com/photo_zoom.gne?id=544183195&size=o

http://www.flickr.com/photo_zoom.gne?id=544183225&size=o

http://www.flickr.com/photo_zoom.gne?id=544183233&size=o

Example 2

http://www.flickr.com/photo_zoom.gne?id=545133789&size=o

http://www.flickr.com/photo_zoom.gne?id=545133791&size=o

http://www.flickr.com/photo_zoom.gne?id=545133801&size=o

http://www.flickr.com/photo_zoom.gne?id=545133807&size=o

http://www.flickr.com/photo_zoom.gne?id=545133811&size=o

http://www.flickr.com/photo_zoom.gne?id=545138911&size=o

http://www.flickr.com/photo_zoom.gne?id=545138913&size=o

http://www.flickr.com/photo_zoom.gne?id=545138915&size=o

http://www.flickr.com/photo_zoom.gne?id=545138917&size=o

http://www.flickr.com/photo_zoom.gne?id=545138947&size=o

http://www.flickr.com/photo_zoom.gne?id=545138951&size=o

http://www.flickr.com/photo_zoom.gne?id=545005958&size=o

Example 3

http://www.flickr.com/photo_zoom.gne?id=549186611&size=o

http://www.flickr.com/photo_zoom.gne?id=549186651&size=o

http://java.sun.com/j2se/1.5.0/docs/api/

/people/krishna.moorthyp/blog/2006/07/29/documentation-html-editor-in-xi

/people/sap.user72/blog/2006/02/06/xi-mapping-tool-exports

http://help.sap.com/saphelp_nw04/helpdata/en/43/c4cdfc334824478090739c04c4a249/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/22/e127f28b572243b4324879c6bf05a0/content.htm

/people/stefan.grube/blog/2005/12/30/test-user-defined-functions-for-the-xi-graphical-mapping-tool-in-developer-studio

http://help.sap.com/bp_bpmv130/Documentation/Operation/MappingXI30.pdf

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d046c490

Regards,

Vinod.