How to invoke Bpel process from java using 'bpel process WSDL'

I want to call bpel process from java using bpel wsdl.
could any one point me to any url/sample.
Thanks
Nagajyothy

Hi Seshagiri,
Thanks for providing links and initial steps to create web service proxy(using Jdeveloper 11g).
I created a web service proxy.
provided the needed inputs.
when I ran the client app, bpel process(has a human task) got invoked but faulted with exception as below
Operation 'initiateTask' failed with exception 'EJB Exception: : java.lang.ExceptionInInitializerError[[
     at oracle.tip.pc.services.common.ServiceFactory.getAuthorizationServiceInstance(ServiceFactory.java:147)
     at oracle.bpel.services.workflow.task.impl.TaskService.initiateTask(TaskService.java:1159)
     at oracle.bpel.services.workflow.task.impl.TaskService.initiateTask(TaskService.java:502)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
please help me in solving the above problem.
Thanks
Nagajyothy

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Hi.....
When initiating a BPEL process from JAVA the code is working fine and the Process is getting initiated.But while using that code in J2EE project as a java code and while calling that method Error is occuring.....
Here by i am attaching my JAVA Code which runs as an applicateion and package which runs in Server....
JSP and Java Method Used:
JSP Code:
===============
<%@ page import=" bo.callbpel" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>FEATT - I30</title>
</head>
<body>
<%
String input=request.getParameter("dnvalue");
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String Output=p.Initiate(input);
out.print("The Input Given to the BPEL Process is : "+input);
%>
<BR><BR><BR><BR><BR><BR>
<%
out.print("The Reply from BPEL Process is : "+Output);
%>
</body>
</html>
Java Code:
package bo;
import com.oracle.bpel.client.Locator;
import com.oracle.bpel.client.NormalizedMessage;
import com.oracle.bpel.client.delivery.IDeliveryService;
import java.util.Map;
import java.util.Properties;
import oracle.xml.parser.v2.XMLElement;
/*import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest ;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession; */
//import java.util.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class callbpel {
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          xml=xml+"<ns1:input>"+input+"</ns1:input>";
          xml=xml+"</ns1:BPELProcess1ProcessRequest>";
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          NormalizedMessage nm = new NormalizedMessage();
          System.out.println("After creating the NormalizedMessage object.*.*.*...");
          //msgProps.put("conversationId",uniqueBpelId);
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          System.out.println("After calling the BPELProcess1 .*.*.*...");
          Map payload = res.getPayload();
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          replyText=xmlEl.getText();
          System.out.println("Reply from BPEL Process>>>>>>>>>>>>> "+replyText);
          catch (Exception e) {
          System.out.println("Exception : "+e);
          e.printStackTrace();
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While Creating and Object for the Class callbpel and Whilw Calling that Method
callbpel p=new callbpel();
String Output=p.Initiate(input);
Its throwing an Error:
Error Occured is:
After creating the locator object......
Before creating the NormalizedMessage object......
After creating the NormalizedMessage object.*.*.*...
Before creating response object......
Apr 24, 2008 9:12:00 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NoClassDefFoundError: javax/ejb/EJBException
     at com.oracle.bpel.client.util.ExceptionUtils.handleServerException(ExceptionUtils.java:76)
     at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:254)
     at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:83)
     at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:53)
     at bo.callbpel.Initiate(callbpel.java:55)
     at org.apache.jsp.output_jsp._jspService(output_jsp.java:55)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
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     at java.lang.Thread.run(Unknown Source)
For Running JSP i am Using Eclipse 3.2.0 and apache-tomcat-5.5.25
Please Provide me a Solution......
Thanks in Advance.....
Regards,
Suresh K

Have got the same problem. Scenario at my end is little different though.
I am trying to invoke a BPEL process from an ESB Service.
I am trying to look into it..
However, would be grateful, if someone can give some insight into this since many are running into this issue without being able to fix.
Ashish.

Invoking a BPEL process from java

Hello,
I tried invoking a BPEL process from java. I got the following error:
Error deserializing
return value: java.io.InvalidClassException:
javax.xml.namespace.QName, local class incompatible:
classdesc stream serialVersionUID = ..., local class serialVersionUID = ...
Thank you for helping me.

Hello,
Here is the code I use:
Properties props = new Properties();
Locator locator = null;
props.put("orabpel.platform", "ias_10g" );
props.put("java.naming.factory.initial","com.evermind.server.rmi.RMIInitialContextFactory" );
props.put("java.naming.provider.url","opmn:ormi://host:port/orabpel" );
props.put("java.naming.security.principal", "adminuser" );
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Exception in thread "main" java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.oracle.bpel.client.BPELProcessHandle; local class incompatible: stream classdesc serialVersionUID = 5429682712928177644, local class serialVersionUID = 8176841433835717563
at com.oracle.bpel.client.util.ExceptionUtils.handleServerException(ExceptionUtils.java:82)
at com.oracle.bpel.client.Locator.listProcesses(Locator.java:309)
Thanks for help.
Edited by: 857737 on 14 sept. 2012 10:00

Error Invoking a BPEL process from JAVA

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***************** SOURCE **************************************
Locator locator = new Locator("default", "bpel");
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System.out.println(deliveryService.LOCAL_SERVICE_NAME);
NormalizedMessage nm = new NormalizedMessage();
nm.addPart("payload", xml );
NormalizedMessage res =
deliveryService.request("LOAD_DB_5", "process", nm);
********************* ERROR ************************************
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     at java.lang.Thread.run(Thread.java:595)
08/07/23 17:07:21      at com.oracle.bpel.client.util.BeanRegistry.lookupDeliveryBean(BeanRegistry.java:293)
08/07/23 17:07:21      at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:250)
08/07/23 17:07:21      at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:83)
08/07/23 17:07:21      at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:53)
08/07/23 17:07:21      at amaos.xml.loadData.LoadXml.loadData(LoadXml.java:31)
08/07/23 17:07:21      at amaos.view.beans.FileProcessor.fileUploaded(FileProcessor.java:159)
08/07/23 17:07:21      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
08/07/23 17:07:21      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
08/07/23 17:07:21      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
08/07/23 17:07:21      at java.lang.reflect.Method.invoke(Method.java:585)
08/07/23 17:07:21      at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146)
08/07/23 17:07:21      at oracle.adf.view.faces.component.UIXComponentBase.__broadcast(UIXComponentBase.java:1087)
08/07/23 17:07:21      at oracle.adf.view.faces.component.UIXEditableValue.broadcast(UIXEditableValue.java:247)
08/07/23 17:07:21      at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:269)
08/07/23 17:07:21      at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:363)
08/07/23 17:07:21      at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:98)
08/07/23 17:07:21      at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
08/07/23 17:07:21      at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
08/07/23 17:07:21      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
08/07/23 17:07:21      at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
08/07/23 17:07:21      at amaos.view.UploadQuestionary.doFilter(UploadQuestionary.java:24)
08/07/23 17:07:21      at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
08/07/23 17:07:21      at amaos.view.UploadQuestionary.doFilter(UploadQuestionary.java:24)
08/07/23 17:07:21      at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:17)
08/07/23 17:07:21      at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162)
08/07/23 17:07:21      at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:17)
08/07/23 17:07:21      at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228)
08/07/23 17:07:21      at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197)
08/07/23 17:07:21      at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:171)
08/07/23 17:07:21      at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103)
08/07/23 17:07:21      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
08/07/23 17:07:21      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
08/07/23 17:07:21      at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
08/07/23 17:07:21      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
08/07/23 17:07:21      at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
08/07/23 17:07:21      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
08/07/23 17:07:21      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
08/07/23 17:07:21      at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
08/07/23 17:07:21      at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
08/07/23 17:07:21      at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
08/07/23 17:07:21      at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
08/07/23 17:07:21      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
08/07/23 17:07:21      at java.lang.Thread.run(Thread.java:595)
Any help is welcome!
Thanks

Hi
You are trying to create a locator object with default values which does not work at all times.Use Locator("default",prop) where prop is a properties object and set the values according to your environment.
The following properties values must be set
Properties props=new Properties();
props.setProperty("orabpel.platform","ias_10g");
props.setProperty("java.naming.factory.initial","com.evermind.server.rmi.RMIInitialContextFactory");
props.setProperty("java.naming.provider.url", "url value");
props.setProperty("java.naming.security.principal","domain user name");
props.setProperty("java.naming.security.credentials","password");
props.setProperty("dedicated.rmicontext", "true");

Invoking asynchronous BPEL process from java ui

Hi,
I am invoking an asynchronous BPEL process from java ui.
I read somewhere that i can obtain an instance handler uing the lookupInstance() method of class Locator using the conversation id provided by the class NormalizedMessage.
My code looks like this
// Connect to Oracle BPEL server
Locator locator = new Locator("default","bpel");
IDeliveryService deliveryService = (IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME );
// Construct a normalized message and send to Oracle BPEL Process Manager
NormalizedMessage nm = new NormalizedMessage();
nm.addPart("payload", xml);
// Initiate the BPEL process
deliveryService.post("MyLoanFlow", "initiate", nm);
//Obtain the instance handler
IInstanceHandle handle = locator.lookupInstance(NormalizedMessage.CONVERSATION_ID);
But this is giving the error - can not find any instance with conversation id 'conversationId'.
Also, if i try to obtain a list of instance handles associated with a process , it does not contain the most recently created instance
IBPELProcessHandle ph = locator.lookupProcess("MyLoanFlow");
IInstanceHandle[] iHandler = ph.listInstances();
out.println(iHandler.length + "<br>");
if i invoke the process for the first time the output is 0.
can you please help me. it is urgent.

Hi Sudipto,
Regarding your second question,
deliveryService.post("MyLoanFlow", "initiate", nm);
IBPELProcessHandle ph = locator.lookupProcess("MyLoanFlow");
IInstanceHandle[] iHandler = ph.listInstances();
out.println(iHandler.length + "<br>");
---- returns 0 ---
This is because MyLoanFlow is an asynchronous process in your case. So the control is returned to your java block immediately after the request for a new instance is posted. And your second line of code(querying for the list of instances) is executed even before the instance is created on the server side. You can verify this in two ways:
1. try creating an instance of a synchronous process using IDeliveryService.request - this will always result in the increment since the current thread is blocked till the new instance is created.
2. for your case, you can try
Thread.currentThread().sleep(500); - just allow the server some time for completing the instance before you query it for the list of instances..
and wrt question 1,
//Obtain the instance handler
IInstanceHandle handle = locator.lookupInstance(NormalizedMessage.CONVERSATION_ID);
But this is giving the error - can not find any instance with conversation id 'conversationId'.
For setting the conversationId, you could do so by including the following inside your .bpel file
<bpelx:exec name="test-setConversationId" language="java" version="1.4">
<![CDATA[
setConversationId("conversationId");
]]>
</bpelx:exec>
The code:
IInstanceHandle ins = locator.lookupInstanceByConversationId(NormalizedMessage.CONVERSATION_ID);
should fetch you the required instance in this case.
HTH,
Anuj

How to call a BPEL process from Java ?

How can I call a BPEL process from Java?
The Java client should be outside of the PEL engine.
Does someone have a piece of sample code for
a "Hello world" java-to-bpel call (+ java client src)?

http://www.oracle.com/technology/products/ias/bpel/pdf/orabpel-Tutorial7-InvokingBPELProcesses.pdf

How to invoke Bpel process from java using 'bpel process WSDL'

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