XI PIPELINE STEPS

[Former Member]

Hi Experts,

I have seen a lot of discussion on Pipeline steps but I am not clear with few things. This is w.r.t 7.1 EHP 1. The XI Pipeline steps happen in ABAP stack. During this process the Operation mapping is called during Interface Determination and the mapping is executed. Now ESR and ID are part of Java Stack then where does the mapping gets executed.In ABAP stack or Java Stack? Also how exactly the Adapter Engine and Integration Engine communicate between themselves during the execution of Pipeline steps.

Regards,

Shaibayan

[Former Member · Accepted solution]

Hi Shaibayan,

Check out the below SAP help page:

http://help.sap.com/saphelp_nw73ehp1/helpdata/en/f9/f73f529e71462cb6efcd7a44e2fe99/content.htm

Its for PI 7.3 EHP 1 but it will suffice your question. Both the stacks have their runtime engines (CPA Cache for Java Stack and SXI_CACHE in ABAP stack) which uses information from the Integration Directory for message processing.

Also check out this thread to understand the message flow between ABAP and JAVA stack:

http://scn.sap.com/people/siva.maranani/blog/2005/05/25/understanding-message-flow-in-xi

Regards

Bikash

[Former Member · Accepted solution]

Hi Bikash,

Thanks for the docs. After going through this I have a understanding that the Pipeline steps happen in IE i.e. ABAP stack and the Interface Determination and Operation Mapping and then Message Mapping details are stored in the Runtime Cache of the IE from where it is executed. So the conclusion that I can make is even though the ESR and ID objects reside in Java the execution takes part from the Cache of IE i.e. ABAP stack. Am I correct?

Regards,

Shaibayan

[Former Member]

This message was moderated.

[Harish]

Hi Shaibayan,

In single stack there is no integration engine. Please check the below SAP help page

https://help.sap.com/saphelp_nw73ehp1/helpdata/en/aa/d306159ee24c35a76b9b8abcc0c95a/content.htm

regards,

Harish