Invoke BPEL process with the webservice interface

Question

I'm using Oracle BPEL PM 10.1.2.x.
Follow the example comes with the BPEL PM, i can invoke the BPEL process in a J2EE project (with the webservice interface). The example named "UseStockReviewSheet".
Then i tried to invoke the BPEL process i designed with Eclipse BPEL Designer. The version of BPEL designer for Eclipse is 0.9.13.
I failed and got following errors:
09/03/17 16:55:53 com.oracle.bpel.client.BPELFault: faultName: {{http://schemas.
xmlsoap.org/ws/2003/03/business-process/}selectionFailure}
messageType: {null}
parts: {{summary=<summary>变量/表达式结果为空.
尝试读取/复制第 50 行的 xpath 变量/表达式 "bpws:getVariableData('input','payload
','/tns:CreditFlowRequest/tns:input')" 时, 发现为空。.
请确保变量/表达式结果 "bpws:getVariableData('input','payload','/tns:CreditFlowRe
quest/tns:input')" 非空。.
</summary>}}
09/03/17 16:55:53 at com.collaxa.cube.engine.ext.wmp.BPELAssignWMP.checkEx
pressionFromValue(BPELAssignWMP.java:972)
09/03/17 16:55:53 at com.collaxa.cube.engine.ext.wmp.BPELAssignWMP.evalFro
mValue(BPELAssignWMP.java:504)
09/03/17 16:55:53 at com.collaxa.cube.engine.ext.wmp.BPELAssignWMP.__execu
teStatements(BPELAssignWMP.java:122)
09/03/17 16:55:53 at com.collaxa.cube.engine.ext.wmp.BPELActivityWMP.perfo
rm(BPELActivityWMP.java:188)
09/03/17 16:55:53 at com.collaxa.cube.engine.CubeEngine.performActivity(Cu
beEngine.java:3408)
09/03/17 16:55:53 at com.collaxa.cube.engine.CubeEngine.handleWorkItem(Cub
eEngine.java:1836)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.message.instance.Per
formMessageHandler.handleLocal(PerformMessageHandler.java:75)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.DispatchHelper.handl
eLocalMessage(DispatchHelper.java:166)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.DispatchHelper.sendM
emory(DispatchHelper.java:252)
09/03/17 16:55:53 at com.collaxa.cube.engine.CubeEngine.endRequest(CubeEng
ine.java:5438)
09/03/17 16:55:53 at com.collaxa.cube.engine.CubeEngine.createAndInvoke(Cu
beEngine.java:1217)
09/03/17 16:55:53 at com.collaxa.cube.engine.delivery.DeliveryService.hand
leInvoke(DeliveryService.java:511)
09/03/17 16:55:53 at com.collaxa.cube.engine.ejb.impl.CubeDeliveryBean.han
dleInvoke(CubeDeliveryBean.java:335)
09/03/17 16:55:53 at ICubeDeliveryLocalBean_StatelessSessionBeanWrapper16.
handleInvoke(ICubeDeliveryLocalBean_StatelessSessionBeanWrapper16.java:1796)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.message.invoke.Invok
eInstanceMessageHandler.handle(InvokeInstanceMessageHandler.java:37)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.DispatchHelper.handl
eMessage(DispatchHelper.java:125)
09/03/17 16:55:53 at com.collaxa.cube.engine.dispatch.BaseScheduledWorker.
process(BaseScheduledWorker.java:70)
09/03/17 16:55:53 at com.collaxa.cube.engine.ejb.impl.WorkerBean.onMessage
(WorkerBean.java:86)
09/03/17 16:55:53 at com.evermind.server.ejb.MessageDrivenBeanInvocation.r
un(MessageDrivenBeanInvocation.java:123)
09/03/17 16:55:53 at com.evermind.server.ejb.MessageDrivenHome.onMessage(M
essageDrivenHome.java:755)
09/03/17 16:55:53 at com.evermind.server.ejb.MessageDrivenHome.run(Message
DrivenHome.java:928)
09/03/17 16:55:53 at com.evermind.util.ReleasableResourcePooledExecutor$My
Worker.run(ReleasableResourcePooledExecutor.java:186)
09/03/17 16:55:53 at java.lang.Thread.run(Thread.java:534)
<2009-03-17 16:55:53,640> <ERROR> <default.collaxa.cube.xml> com.oracle.bpel.cli
ent.BPELFault: faultName: {{http://schemas.xmlsoap.org/ws/2003/03/business-proce
ss/}selectionFailure}
messageType: {null}
parts: {{summary=<summary>变量/表达式结果为空.
尝试读取/复制第 50 行的 xpath 变量/表达式 "bpws:getVariableData('input','payload
','/tns:CreditFlowRequest/tns:input')" 时, 发现为空。.
请确保变量/表达式结果 "bpws:getVariableData('input','payload','/tns:CreditFlowRe
quest/tns:input')" 非空。.
</summary>}}
I can invoke my BPEL process in BPEL console, not in J2EE project. bpws:getVariableData('input','payload','/tns:CreditFlowRequest/tns:input')" is null.
The error message contains some Chineses word. I'm new to BPEL, hope someone can give me a hint on how to solve this problem.
Thanks a billion!
--Sunny 2009-3-18

Answer 1

Following is the java class invoking BPEL process with the webservice interface.
package com.otn.samples;
import javax.xml.namespace.QName;
import javax.xml.rpc.JAXRPCException;
import javax.xml.rpc.ParameterMode;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceException;
import javax.xml.rpc.ServiceFactory;
import javax.xml.rpc.encoding.XMLType;
import javax.xml.rpc.soap.SOAPFaultException;
import org.apache.axis.client.Call;
* @version 2.0 $Date: 07-mar-2005.05:07:45 $
* @author Copyright (c) 2004 by Oracle. All Rights Reserved.
public class CreditFlowClient
private static QName SERVICE_NAME;
private static QName PORT_TYPE;
private static QName OPERATION_NAME;
private static String SOAP_ACTION;
private static String STYLE;
private static String THIS_NAMESPACE = "http://samples.otn.com";
private static String PARAMETER_NAMESPACE = "http://samples.otn.com";
private String location;
static
SERVICE_NAME = new QName(THIS_NAMESPACE,"CreditFlow");
PORT_TYPE = new QName(THIS_NAMESPACE,"CreditFlow") ;
OPERATION_NAME = new QName(THIS_NAMESPACE,"creditFlowRequest");
SOAP_ACTION = "initiate";
STYLE = "wrapped";
public void setLocation(String location)
this.location = location;
public void initiate(String ssn)
try
/* Create Service and Call object */
ServiceFactory serviceFactory = ServiceFactory.newInstance();
Service service = serviceFactory.createService( SERVICE_NAME );
Call call = (Call)service.createCall( PORT_TYPE );
/* Set all of the stuff that would normally come from WSDL */
call.setTargetEndpointAddress( location );
call.setProperty(Call.SOAPACTION_USE_PROPERTY, Boolean.TRUE);
call.setProperty(Call.SOAPACTION_URI_PROPERTY, SOAP_ACTION);
call.setProperty( Call.OPERATION_STYLE_PROPERTY , STYLE );
call.setOperationName(OPERATION_NAME);
call.addParameter(new QName(PARAMETER_NAMESPACE,"ssn"), XMLType.XSD_STRING, ParameterMode.IN);
Object[] params = new Object[1];
params[0] = ssn;
/* Invoke the service */
call.invokeOneWay(params);
System.out.println( "CreditFlow BPEL process initiated" );
catch (SOAPFaultException e)
System.err.println("Generated fault: ");
System.out.println (" Fault Code = " + e.getFaultCode());
System.out.println (" Fault String = " + e.getFaultString());
catch (JAXRPCException e)
System.err.println("JAXRPC Exception: " + e.getMessage());
catch (ServiceException e)
System.err.println("Service Exception: " + e.getMessage());
public static void main(String[] args)
String ssn = "12-123-126";
String location = "http://localhost:9700/orabpel/default/CreditFlow";
CreditFlowClient client = new CreditFlowClient();
if(args.length == 1)
     ssn = args[0];
else if(args.length ==2)
location = args[0];
ssn = args[1];
client.setLocation( location );
client.initiate( ssn );
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