How to start with PAPI

Question

Hi
Can someone suggest a better way to start with PAPI usage.
may be a beginners guide in a precise way.. or a sample project that i can carryout locally on my machine without enterprise server.
a guide that describes the scenarios which require PAPI...
Any help is appreciated..
Regds,
Viswanath

Answer 1

Here's a step by step document on how you could use the Java PAPI using JDeveloper 11: http://www.4shared.com/file/126507332/e814a3a8/CallingPapi.html. The Oracle BPM project I used for this step-by-step document is also in this zip file. If you're curious, this also describes how to download, install and start JDeveloper 11.
In this example, you could create a new participant (e.g. "remotePapi") for PAPI session. On Enterprise you are actually creating the session to connect to the Directory Service and not a specific process or Engine.
This is not formal Oracle documentation, but I know that getting PAPI to work is sometimes a challenge and thought this might help. I tried to write it with the "Java Newbie" in mind so do not panic if you aren't an expert in Java (I'm sure not ).
This is a simple example that uses most of the logic found in the PAPI documentation on http://download.oracle.com/docs/cd/E13154_01/bpm/docs65/papi/index.html?t=modules/papi/c_Head_PAPI.html in the "Writing Your First Java PAPI Program" section of this document.
The document provides a step-by-step description on how how to use PAPI to:
<li> interface to processes running on an Oracle BPM Enterprise Engine using the same logic that is in the Oracle BPM PAPI documentation
<li> interface to processes running on an Oracle BPM Studio Engine
<li> list processes currently running on the Engine using the same logic that is in the Oracle BPM PAPI documentation
<li> list the work item instances running on the Engine using the same logic that is in the Oracle BPM PAPI documentation
<li> create a new work item instance in a process and pass in input argument variables to the new instance as it is created.
I have a similar example of how to do this using PAPI-WS using SOAP-UI. Instead of using SOAP-UI, it could have been any outside environment that could invoke web services.
Hope you find this useful,
Dan