Java API to work with Oracle Workflow

Question

Hi,
I'm new to Oracle Workflow. Currently, I'm starting to work on a java front-end to work with some features of Oracle Workflow.
The only thing I know, is that I should be using workflow 2.6.3, and someone gave me a jar which is supposed to be the java API to the workflow, and a link to some online info:
http://download-uk.oracle.com/docs/cd/B19306_01/workflow.102/b15855/toc.htm
The api I received, was a jar file named "wfapi.jar". It was sent to me by email, don't know where they got it from.
And that's it ... it's the only info I received.
Searching the web, I found this interesting article:
http://www.oracle.com/technology/products/ias/workflow/release262/wfjavawp.pdf
That teaches me how to work with the java API, but the document itself is intended for release 2.6.2 (november 2001). So I started doing the first coding, and found that I have no way of implementing the instruction: "import oracle.apps.fnd.common.*;"
Seems I don't have the "common" part of the package ... that just pops up two reasons:
1. I don't have the complete java API;
2. This code is for version 2.6.2, and in version 2.6.3 of the API the "common" was removed (which I think it would be quite odd).
So I endup with no way of testing, and don't know the product well enough to start working and learning with it.
Anyone can give me some lights?
Where can I find a complete and definite complete java API?
What about some guide with some examples on how to start working with the API?
Where can I search the demo java programs?
If I download the Oracle Workflow 2.6.3 from oracle.com, will I be able to get that API? Will I need to install it to get the API? Do I need the Oracle DB to be installed first?
I would appreciate some help on how I can startup using this, or what should I look for, and most importantly, where?
Thank you very much.
----- code example -----
To test using what I got, I've ran the following code:
          String sUser = "myuser";
          String sPass = "mypass";
          String sJdbc = "jdbc:oracle:thin:@";
          String sStrg = "myserver:1520:mysid";
          String sCharSet = null;
          WFDB myDB;
          WFContext ctx;
          myDB = new WFDB(sUser, sPass, sJdbc, sStrg);
          sCharSet = System.getProperty("CHARSET");
          if(sCharSet==null) {  //cannot be null
               sCharSet = "UTF8";
This just gives me the following message:
[22-11-2005 14:58:54:328 GMT] 7b4542dd WebGroup E SRVE0026E: [Servlet Error]-[oracle/apps/fnd/common/VersionInfo]: java.lang.NoClassDefFoundError: oracle/apps/fnd/common/VersionInfo
     at      at oracle.apps.fnd.wf.WFDB.<clinit>(WFDB.java:27).null(Unknown Source)
So it seems the "common" is needed after all ...

Answer 1

Hi,
Can any one Please Help me out am Stuck up with the following Exception While trying to invoke a External java Function.
Step 1: Written the attached Java Class from "Oracle WorkFlow's Developers's" guide.
Ref: http://www.stanford.edu/dept/itss/docs/oracle/10g/workflow.101/b10284/deffa02.htm#stdjfa
Step 2: In builder created a process and created a Java Function
<package-name>.<class-name>
Step 3: Compiled the Java Class,and Created a jar file and included the jar and the required .jar files [which are required to make that class compile free] in the class path.
Step 4: We modified the wfjvlsnr.bat by including the custom jar file which was created and the dependent jar files in the classpath and ran the Java Agent.
Step 5: Invoked the Process from client, once the process is invoked we are getting
Unable to load class gov.oracle.apps.fnd.wf.SampleWF
java.lang.ClassNotFoundException: gov.oracle.apps.fnd.wf.SampleWF
Tue Oct 10 14:33:38 GMT+05:30 2006 Enqueuing VAC02/VAC02 gov.oracle.apps.fnd.wf.SampleWF
null
Unable to load class gov.oracle.apps.fnd.wf.SampleWF
: java.lang.ClassNotFoundEx
ception: gov.oracle.apps.fnd.wf.SampleWF
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