Help with jsp page and bpel process

Question

I learnt BPEL process is a web service and it could be invoked.
I want to write a jsp page to do it.
I read about Locator, Idelliveryservice,normalizedmessage...
The method addPart of normalizedmessage class take only one string (other than payload) or an element.
If i have 2 or more variables in payload, have i to use
normmessage.addPart(...,var1)
normmessage.addPart(...,var2)
normmessage.addPart(...,var3)
or have i to put all the variable in an element and use only once addPart?
Thanks
Ema
PS-Is there a precise example about this problem? i read only "loandemo" process and "helloworld" process.

Answer 1

Here's how I built mine:
String xml = "<EmailControlProcessRequest xmlns=\"http://xmlns.oracle.com/EmailControl\">"
+ "<input>" + input + "</input>" + "<changeType>" + changeType + "</changeType>" + "<days>" + days + "</days>" + "</EmailControlProcessRequest>"
Basically, look inside JDev to see the how your whole variable is formed. Then, build your xml string according to how it's built.
My variable is built like this:
<EmailControlProcessRequest>
<input>input info</input>
<changeType>changeType info</changeType>
<days>days info</days>
</EmailControlProcessRequest>
Then, after that, I do this:
NormalizedMessage nm = new NormalizedMessage();
nm.addPart("payload", xml);