on 04-22-2008 10:57 AM
Hi Experts,
can anyone suggest me weblog(s) which explains step by step procedure to create an UDF?
Regards
Faisal
Hi Abdul,
Activities
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.
Regards
Seshagiri
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can use 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/
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
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Hi,
And also check these
/people/krishna.moorthyp/blog/2006/07/29/documentation-html-editor-in-xi
/people/sap.user72/blog/2006/02/06/xi-mapping-tool-exports
Regards
Seshagiri
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Hello Abdul,
step-by-step creation of UDF in Message mapping Editor
To create a new user-defined function, choose Create New Function () in the data-flow editor at the bottom of the screen, on the left-hand side.
2. Specify the attributes of the new function in the subsequent window:
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).
Arguments:
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 subsequent window, 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 kumar
Reward if it is useful...
Edited by: SATYA KUMAR AKKARABOYANA on Apr 22, 2008 12:12 PM
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