JCO - PI 7.1 problems

Question

We are setting up a scenario: Java program -> PI 7.1 -> SAP ECC 6.0
The JAVA program is using JCO libraries to do RFC calls to PI. PI calls ECC 6 through ABAP proxies (which works fine).
Could someone please share their experience in integrating JCO with PI?
Do we really have to define a physical function module on the PI side in order for JCO to load the function template or could we somehow JUST use the PI RFC adapter?
We would very much try to avoid defining our own function modules in PI. The message structures are huge, and as I see it we have to define these structures as input parameters to our function modules (by hand!).
Please advice - Thanks

Answer 1

Stefan Grube wrote:
Instead of using JCO, you should use web service infrastructure in your Java application.
> Define a web service in PI and create a web service client in your application.
>
> This can be done easily with NWDS.
or possibly a java proxy connectivity.