Programmatically Accessing the Human Workflow Tasks' Payloads

Question

Hi Everybody,
I hope I'm not over the line here but I would like to ask for help.
I am using the Human Workflow Tasks Services (*web services*), specially the Task Query Service and the Task Service, to retrieve the tasks' list of a user and change the outcomes.
The problem is that when I am trying the getPayload() method , it always return null .
Any solution please?
Regards

Answer 1

Hello
First, Thank you for the 2 links.
I tried this exemple but It didn't work for me.
I used the java code bellow :
+try {+
IWorkflowServiceClient wfSvcClient = null;
ITaskQueryService taskQuerySvc = null;
IWorkflowContext wfCtx = null;
+// 1. this step is optional since configuration can be set in wf_client_config.xml file+
Map<CONNECTION_PROPERTY, String> properties = new HashMap<CONNECTION_PROPERTY, String>();
+if (WorkflowServiceClientFactory.REMOTE_CLIENT.equals(clientType)) {+
properties.put(CONNECTION_PROPERTY.EJB_INITIAL_CONTEXT_FACTORY,
+"weblogic.jndi.WLInitialContextFactory");+
properties.put(CONNECTION_PROPERTY.EJB_PROVIDER_URL,
+"t3://192.9.200.77:7001");+
properties.put(CONNECTION_PROPERTY.EJB_SECURITY_CREDENTIALS,
+"weblogic");+
properties.put(CONNECTION_PROPERTY.EJB_SECURITY_PRINCIPAL, "weblogic");
+} else if (WorkflowServiceClientFactory.SOAP_CLIENT.equals(clientType)) {+
properties.put(CONNECTION_PROPERTY.SOAP_END_POINT_ROOT,
+"http://192.9.200.77:7001");+
properties.put(CONNECTION_PROPERTY.SOAP_IDENTITY_PROPAGATION,"non-saml"); // optional
+}+
+// 2. gets IWorkflowServiceClient for specified client type+
wfSvcClient = WorkflowServiceClientFactory.getWorkflowServiceClient(clientType, properties, null);
+.............+
When I run it using the REMOTE or SOAP mode , I have the same result: An exception occurs with the execution of the .getWorkflowServiceClient() method .
Exception in thread "main" java.lang.NoClassDefFoundError: oracle/jrf/PortabilityLayerException
+     at oracle.bpel.services.workflow.client.WorkflowServiceClientFactory.getWorkflowServiceClient(WorkflowServiceClientFactory.java:358)+
+     at idee.soa.HWTask.getTaskdetails(HWTask.java:55)+
+     at idee.soa.MainTest.main(MainTest.java:11)+
Caused by: java.lang.ClassNotFoundException: oracle.jrf.PortabilityLayerException
+     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)+
+     at java.security.AccessController.doPrivileged(Native Method)+
+     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)+
+     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)+
+     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)+
+     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)+
+     ... 3 more+
Please, I need your help :(
Regards