Node Functions

[Former Member]

Hi experts,

What is the need of node functions?

why we use Node functions?

Any real example?

Please I am very much confusing with These concepts

Thanks

Sushma.Maganti

[Former Member]

HI SUSHMA

MAPPINGS STANDARD NODE FUNCTIONS:

Remove Contexts: We use it to remove Header Contexts from source side. If we donu2019t want header context to repeat in target structure, use this. It removes repeated header contexts and all the items come under the same contexts.

Split by Value: This is counter part of remove context. Use this to add the header context at the target side. Suppose if we wan to separate header contexts for every value of item at source use this.

Copy Value: We can use this to copy the value of a position in the source structure and assign it to a target field for frequently occurring source structure element. The value is copied each time the target field occurs in the target structure.

Createif (): Use it to create a tag in the target structure depending on the condition. Use it, if the nodes at the target side have to be created only after certain condition is true. If value type is u2018INTENALu2019 Internal request node is created and if value type is u2018EXTERNALu2019 external request node is created.

Collapse Context: We use it, if we have to create empty tags in target for every context change in the source.

Exists: While mapping idoc structure to file structure, Lot of times we come across a scenario where the fields (occurrence=0) are not mandatory in the idoc. They are not populated in the source xml and they are required in the target xml (occurrence=1) which gives runtime exception that target element canu2019t be created.

refer the following links for further assitance

/people/sravya.talanki2/blog/2005/12/08/message-mapping-simplified-150-part-ii

/people/claus.wallacher/blog/2006/04/17/replication-of-nodes-using-the-graphical-mapping-tool

/people/claus.wallacher/blog/2006/08/15/duplicating-subtrees-and-numbering-them-using-the-graphical-mapping-tool

http://help.sap.com/saphelp_nw04/helpdata/en/21/3bb8c495125e4eb5969f0377885fe0/content.htm

/people/sravya.talanki2/blog/2005/08/16/message-mapping-simplified--part-i

/people/sundararamaprasad.subbaraman/blog/2006/02/21/real-example-for-formatbyexample

http://help.sap.com/saphelp_nw04/helpdata/en/1f/ea0fb12403844bbb6c4cbc8a00cda9/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/4b/d11e3e1c3b120ae10000000a114084/content.htm

cheers

reward points if found useful

Edited by: vemuganti naga phalguna on Jun 16, 2008 1:23 PM