BPEL and conversational services

For some reason my earlier post failed. It threw up some weird error.
I am building a BPEL which is composed of synchronous web services. The simplest of these business processes has a single synchronous web service call. The web service returns an array of java beans.
1. My web service has been deployed on the oc4j. It is not a JAX-RPC service but an oracle J2EE web service. I used the endpoint in the properties for the webservice to create the partner link but it gives me "The downloade of the specified resource has failed" error.
the endpoint url looks like this http://db2yg41:8888/expenseApp-ExpenseServices-context-root/ItmTypeDBService
I also tried appending a ?wsdl at the end but that failed too.
2. how do I assign a XML schema for the input and output variables of the Business process? My schemas are defined in a business services project in JDev.
3. What is the best practise for modeling such business processes which are composed of such conversational services. I want to have minimum number of transformations.
Should I have my conversational service accept XML or is it good to stick to java beans? I personally prefer having these web services accept and return java bean instances to avoid another transformation within the webservice.In that case how do I perform the transformation on the business process side?
4.If I need to expose these business processes to the presentation layer, what is the best approach?
Thanks,
Jeevak

Hi Edwin,
I hope we are on the same note with what I meant by a conversational service, I meant either async/sync services, nothing more sophisticated than that.
Here is what I am trying to implement
1. I have the xml schemas for the input and output messages of the process. Some of these processes are complex involvign user tasks and tasklists which we can deal with later.
2. The simplest one contains an invoke activity. The web service interacts with the toplink layer. Currently it just extracts the data from the toplink POJOs into java beans and returns an array of these beans. I would prefer returning an array of the POJOs unless it is better returning an xml doc.
My concerns
1. If I use xml docs for the synchronous service it would mean performing redundant transformations. What do you suggest is the best way to transform the xml docs into beans and back both in the process as well as in the service. I have read about orajaxb for oracle j2ee web services and xml facade within the BPEL. I want to reduce the number of transformations and the amount of code I need to write since time is an important consideration
2. I am using the endpoint url provided by the web service properties in jdev. The problem is that the BPEL server is unable to locate this service that has been deployed in the standalone oc4j container. This is an immediate problem that I need to address.
3. Isnt there a way to expose the business process through a facade layer, or should it always be invoked as a web service?
Thank you.
Jeevak

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Edited by: Aagaard on Oct 30, 2008 8:59 PM
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Edited by: 849655 on Aug 9, 2011 2:36 PM

So is there any further info I can provide or anything like that? I am still no closer to solving this it appears...
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Edited by: Arun Vikram on Mar 4, 2010 10:45 PM

Is there any workflow or decision service in ur bpel???
if present,...the ant is not getting ../SVNCopy/Code/AuthorizeCredit/decisionservices and ../SVNCopy/Code/ManageCustomerCreditEligibility/AuthorizeCreditBS/public_html folders.
Edited by: krish.chaitnya on Mar 4, 2010 11:20 PM

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