Bind the output data (Xml) from BPEL process to ADF SelectOneChoice Control

Question

Hello,
My requirement is to invoke a BPEL process from ADF page and display returned results in a select one choice (drop down box).
I have created a Data Control for the BPEL process through Web service data control and tried to invoke the BPEL process. I could see from the BPEL console that BPEL process is getting invoked. But the ADF doesn't bind any of the output to Select one choice.
It doesn't even show any error.
Can you plz help me how to bind the output of the BPEL process to ADF SelectOneChoice control.
The Xml Which I recieve from BPEL process is
<outputVariable><part xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="payload"><DBConnectDemoProcessResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.oracle.com/DBConnectDemo">
<StatusTrans xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/DBSelect">
<transId>1</transId>
<fromStatus>Open</fromStatus>
<toStatus>Assigned</toStatus>
</StatusTrans>
<StatusTrans xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/DBSelect">
<transId>2</transId>
<fromStatus>Open</fromStatus>
<toStatus>Pending</toStatus>
</StatusTrans>
<StatusTrans xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/DBSelect">
<transId>3</transId>
<fromStatus>Open</fromStatus>
<toStatus>Closed</toStatus>
</StatusTrans>
<StatusTrans xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/top/DBSelect">
<transId>4</transId>
<fromStatus>Open</fromStatus>
<toStatus>Cancelled</toStatus>
</StatusTrans>
</DBConnectDemoProcessResponse>
</part></outputVariable>
And the toStatus node values viz, Assigned, Pending, Closed, Cancelled should get binded to the SelectOneChoice control
Waiting for your valuable inputs,
Regards,
babloo.

Answer 1

I have been still trying for the solution. I have modified the XSD created by the jdeveloper to,
<schema attributeFormDefault="unqualified"
     elementFormDefault="qualified"
     targetNamespace="http://xmlns.oracle.com/StateTransitions"
     xmlns="http://www.w3.org/2001/XMLSchema">
     <element name="StateTransitionsProcessRequest">
          <complexType>
               <sequence>
               <element name="input" type="string"/>
               </sequence>
          </complexType>
     </element>
     <element name="StateTransitionsProcessResponse">
          <complexType>
               <sequence maxOccurs="unbounded">
<element name="stateChanges">
<complexType>
<sequence>
<element name="fromState" type="string" />
<element name="toState" type = "string" />
</sequence>
</complexType>
</element>
</sequence>
          </complexType>
     </element>
</schema>
And I have given this XSD url while creating the Web Service Data Control by deploying it into the Oracle App server.
So, I can see the tree structure of "Return" as "StateTransitionsProcessResponse->StateChanges->toState,fromState"
I have binded the toState field of the Data Control to the SelectOneChoice ADF control in a jspx page by using List binding editor.
I have selected,
Base data source as "Variables" (Currently I don't need to update any table),
List Data source as "process: getStateTransitions.process.StateTransitionsProcessResponse.stateChanges" (Web Service Data Control)
Base Data source attribute as "process_input"
List Data Source Attribute as "toState"
I can initiate the web service (BPEL process) by providing the necessary input value like 'Open' or 'Pending' or 'Assigned' but the SelectOneChoice control doesn't populate with any values.
Waiting for valuable inputs!
Thanks and Regards,
babloo.