Question Re: what are NODE Functions in Technology Q&A

what are NODE Functions

Former Member — Fri, 01 Aug 2008 06:46:13 GMT

experts

what are NODE Functions

Re: what are NODE Functions

Former Member — Fri, 01 Aug 2008 06:50:33 GMT

Hi,

If we have a requirement one node at sender side occurs only once but many times it needs at receiver side then this case we need node functions.

For sorting the data either ascending/decending order, remove the context of particular node.

We have one node at sender side that is not mandatory at sender side but it is mandatory at receiver side then we can use map with default node function.

Below are node function with explanation

Node functions:

Sort : sort the values in each context.

Collapse context : It removes the supress and empty values that are in the same context.

Remove Context : It producess plain stream of values. It removes all level contexts.

Map with default : Inserts default value specified in the function properties into empty contexts.

Split by value : It inserts the context after events specified. events are each value, value changed and empty value.

Exists : It ckecks weather the node exists or not.

Replace value : It replacess the value of the source field to the value specified in the function.

Sort by key : Sort values in second queue by keys from first queue

Create If : It producess the nodes based on the IF condition.

Format by example : Takes values from first queue and inserts them in structure of second queue

for more details

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

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

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

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

Regards.

Re: what are NODE Functions

Santhosh_Vellingiri — Fri, 01 Aug 2008 06:51:35 GMT

Hi,

Following are the Node Function.

createIf

removeContexts

replaceValue

exists

SplitByValue

collapseContexts

useOneAsMany

sort

sortByKey

mapWithDefault

formatByExample

Also have a look at this help documentation

http://help.sap.com/saphelp_NW04/helpdata/en/43/c4cdfc334824478090739c04c4a249/frameset.htm

Thanks

SaNv...

Re: what are NODE Functions

Former Member — Fri, 01 Aug 2008 07:31:27 GMT

For clear expalnation abt node functions

Have a look at these links

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

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/9202d890-0201-0010-1588-adb5e89a6638

Edited by: malini balasubramaniam on Aug 1, 2008 9:32 AM

Re: what are NODE Functions

Former Member — Fri, 01 Aug 2008 07:43:21 GMT

NODE FUNCTIONS

1.createIf,

2.removeContexts,

3.replaceValue,

4.Exists,

5.SplitByValue,

6.collapseContexts,

7.useOneAsMany,

8.sort,

9.sortByKey,

10.mapwithDefault,

11.formatByExample

1. remove context:

You use removeContexts () to delete all the top contexts for an element. This removes all top hierarchy levels, so that all elements of the target queue are assigned to a root element of the source queue.

Advanced user-defined functions can import either just one context into the input arrays, or complete queues. Make your selection by selecting or deselecting the Save Entire Queue in Cache checkbox in the function editor.

2. split by value:

The SplitByValue() function is the counterpart to removeContexts(): Instead of deleting a context, you can insert a context change in the source value queue. You then receive this element for each inserted context change instead of a top node element. However, for this to be possible, the top node source field must be assigned a top node target field and minOccurs must be >0. You can insert a context change in the queue after each value, after each change to the value, or after each tag without a value.

3. collapse context:

Using collapseContexts() puts the first values of all contexts into a context. Empty contexts are replaced with an empty string:

This can be useful if an upper-level node is to be created each time a lower-level node exists, for example. The function is useful in combination with the SplitByValue function.

4. Use one as many

You require the function useOneAsMany() if a field that only occurs once needs to be replicated as often as another field occurs in the outbound message so that the fields can be written to the target structure in pairs as a record.

Example:

If “Default” is the default value and

A|B1,B2| |C| |D

is the inbound queue,

mapWithDefault returns the following outbound queue:

A | B1,B2 | Default | C | Default |D.

http://help.sap.com/saphelp_nw04/helpdata/en/2c/2d8c4024d26e1de10000000a1550b0/frameset.htm

5. Map with default

Replaces empty contexts in the inbound queue with a default value, which you specify in the function properties.

6.copyValue

You use CopyValue() for a frequently occurring element to copy the value of a position in the source structure and assign it to a target field. The value is copied each time the target field occurs in the target structure. However, it is copied a maximum of maxOccurs times

7).createIf

You use createIf() to create a tag in the target structure depending on a condition.

8).exists

You use this function to determine whether a particular source field exists in the XML instance to be processed. If it does, exists() returns the value true, otherwise it returns the value false.

9).Use

You use this function if you need to synchronize two queues of equal length with reference to their context change. The mapping runtime takes the values from the first queue, and the context change from the second queue. If the two inbound queues do not have the same number of values, the mapping runtime triggers an exception.

10)sort

Sorts all values of the multiply-occurring inbound field I within the existing or set context. The sorting process is stable (the order of elements that are the same is not switched) and it sorts the values in O(n*log(n)) steps. Using the function properties, you can specify whether values are to be sorted numerically or lexicographically (case-sensitive or non case-sensitive) and in ascending or descending order.

11)sortByKey

Like sort, but with two inbound parameters to sort (key/value) pairs. The sort process can be compared to that of a table with two columns.

● Using the first parameter, you pass key values from the first column, which are used to sort the table. If you have classified the key values as numeric in the function properties, they must not be equal to the constant ResultList.SUPPRESS. See also: The ResultList Object

● Using the second parameter, you pass the values from the second column of the table.

If there is a discrepancy between the number of keys and values, the mapping runtime triggers an exception. The function returns a queue with the values sorted according to the keys.

Nice blogs..

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

Hope this info is useful to you..

Re: what are NODE Functions

Former Member — Fri, 01 Aug 2008 07:44:01 GMT

For understanding node functions this blog will help you

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

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/be05e290-0201-0010-e997-b6e55f9548dd

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

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

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/190eb190-0201-0010-0ab3-e69f70b6c257

http://help.sap.com/saphelp_nw04/helpdata/en/55/7ef3003fc411d6b1f700508b5d5211/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/a8/bfc6373c8fea43bdb3541535bcbd43/frameset.htm

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/8a57d190-0201-0010-9e87-d8f327e1dba7

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

http://help.sap.com/saphelp_nw04/helpdata/en/79/2835b7848c458bb42cf8de0bcc1ace/frameset.htm

Sravaya Talanki- Message Mapping(Node Function) Part-1

Sravaya Talanki- Message Mapping(Node Function) Part-2

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

Standard Functions

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

Advanced mapping function(mapwithdefault,formatbyexample,sort,sortbykey)

msg splitting

Number Formatting

Use one as many optimization

mapping- createif, removecontext,splitbyvalue

queues in message mapping

Handling mixed content

Simple java code in graphical mapping - XI

Value Mapping

Value Mapping1

cheers

Re: what are NODE Functions

Former Member — Fri, 01 Aug 2008 13:40:54 GMT

HI,

It is standard xi functions in Mapping window, under node function different categories is thre like text, constand etc. If node functions not satisfy current requiremet will choose UDF functions.

I hope clear now

Re: what are NODE Functions

Former Member — Sun, 03 Aug 2008 07:26:21 GMT

thanq