Discussion :

[bil.dev]

salut

J'ai essayé de faire les exemples qui se trouvent dans http://docs.jboss.org/jbpm/v3/usergu...ignmentexample
mais j'ai quelques problèmes...

Voici le code de la classe de test:

Code :

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package simple;
 
import junit.framework.TestCase;
 
import org.jbpm.context.exe.ContextInstance;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.graph.exe.Token;
import org.jbpm.taskmgmt.exe.TaskInstance;
 
public class TesterHelloWorldProcess extends TestCase {
 
    public void testTaskAssignment() {
          // The process shown below is based on the hello world process.
          // The state node is replaced by a task-node.  The task-node 
          // is a node in JPDL that represents a wait state and generates 
          // task(s) to be completed before the process can continue to 
          // execute.  
          ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
            "<process-definition name='the baby process'>" +
            "  <start-state>" +
            "    <transition name='baby cries' to='t' />" +
            "  </start-state>" +
            "  <task-node name='t'>" +
            "    <task name='change nappy'>" +
            "      <assignment class='com.sample.action.MyTaskmgmtAssignmentHandler' />" +
            "    </task>" +
            "    <transition to='end' />" +
            "  </task-node>" +
            "  <end-state name='end' />" +
            "</process-definition>"
          );
 
          // Create an execution of the process definition.
          ProcessInstance processInstance = 
              new ProcessInstance(processDefinition);
          Token token = processInstance.getRootToken();
 
          // Let's start the process execution, leaving the start-state 
          // over its default transition.
          token.signal();
          // The signal method will block until the process execution 
          // enters a wait state.   In this case, that is the task-node.
          assertSame(processDefinition.getNode("t"), token.getNode());
 
          // When execution arrived in the task-node, a task 'change nappy'
          // was created and the NappyAssignmentHandler was called to determine
          // to whom the task should be assigned.  The NappyAssignmentHandler 
          // returned 'papa'.
 
          // In a real environment, the tasks would be fetched from the
          // database with the methods in the org.jbpm.db.TaskMgmtSession.
          // Since we don't want to include the persistence complexity in 
          // this example, we just take the first task-instance of this 
          // process instance (we know there is only one in this test
          // scenario).
          TaskInstance taskInstance = (TaskInstance)  
              processInstance
                .getTaskMgmtInstance()
                .getTaskInstances()
                .iterator().next();
 
          // Now, we check if the taskInstance was actually assigned to 'papa'.
          assertEquals("papa", taskInstance.getActorId() );
 
          // Now we suppose that 'papa' has done his duties and mark the task 
          // as done. 
          taskInstance.end();
          // Since this was the last (only) task to do, the completion of this
          // task triggered the continuation of the process instance execution.
 
          assertSame(processDefinition.getNode("end"), token.getNode());
        }
 
}

voici le code du handler

Code :

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package com.sample.action;
 
import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.exe.ExecutionContext;
 
public class MyTaskmgmtAssignmentHandler implements ActionHandler {
 
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
 
    public void execute(ExecutionContext executionContext) throws Exception {
 
        System.err.println("code executer dans le actionHandler predefini!");
    }
 
}

et enfin voici l'erreur:

00:16:39,701 [main] INFO JbpmConfiguration : using jbpm configuration resource 'jbpm.cfg.xml'
00:16:39,701 [main] DEBUG JbpmConfiguration : loading defaults in jbpm configuration
00:16:39,779 [main] DEBUG ObjectFactoryImpl : adding object info 'default.jbpm.context'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.hibernate.cfg.xml'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.business.calendar'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.default.modules'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.converter'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.action.types'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.node.types'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.parsers'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.varmapping'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'resource.mail.templates'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.byte.block.size'
00:16:39,794 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.task.instance.factory'
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.variable.resolver'
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.mail.smtp.host'
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.mail.address.resolver'
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.mail.from.address'
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpm.job.executor'
00:16:39,810 [main] DEBUG JbpmConfiguration : loading specific configuration...
00:16:39,810 [main] DEBUG ObjectFactoryImpl : adding object info 'jbpmConfiguration'
00:16:39,826 [main] INFO StaleObjectLogConfigurer : stale object exceptions will be hidden from logging
00:16:39,966 [main] DEBUG NodeTypes : node 'page' will not be available. class 'org.jboss.seam.pageflow.Page' couldn't be loaded
00:16:39,966 [main] DEBUG NodeTypes : node 'start-page' will not be available. class 'org.jboss.seam.pageflow.Page' couldn't be loaded
00:16:40,013 [main] DEBUG GraphElement : event 'process-start' on 'ProcessDefinition(the baby process)' for 'Token(/)'
00:16:40,029 [main] DEBUG GraphElement : event 'before-signal' on 'StartState(60991f)' for 'Token(/)'
00:16:40,029 [main] DEBUG GraphElement : event 'node-leave' on 'StartState(60991f)' for 'Token(/)'
00:16:40,029 [main] DEBUG GraphElement : event 'transition' on 'Transition(baby cries)' for 'Token(/)'
00:16:40,029 [main] DEBUG GraphElement : event 'node-enter' on 'TaskNode(t)' for 'Token(/)'
00:16:40,076 [main] DEBUG GraphElement : event 'task-create' on 'Task(change nappy)' for 'Token(/)'
00:16:40,138 [main] ERROR Delegation : couldn't load delegation class 'com.sample.action.MyTaskmgmtAssignmentHandler'
java.lang.ClassNotFoundException: class 'com.sample.action.MyTaskmgmtAssignmentHandler' could not be found by the process classloader
at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:118)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jbpm.instantiation.Delegation.instantiate(Delegation.java:140)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.performAssignmentDelegation(TaskMgmtInstance.java:266)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.performAssignment(TaskMgmtInstance.java:244)
at org.jbpm.taskmgmt.exe.TaskInstance.assign(TaskInstance.java:198)
at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(TaskMgmtInstance.java:197)
at org.jbpm.graph.node.TaskNode.execute(TaskNode.java:168)
at org.jbpm.graph.def.Node.enter(Node.java:318)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:393)
at org.jbpm.graph.node.StartState.leave(StartState.java:70)
at org.jbpm.graph.exe.Token.signal(Token.java:192)
at org.jbpm.graph.exe.Token.signal(Token.java:140)
at simple.TesterHelloWorldProcess.testTaskAssignment(TesterHelloWorldProcess.java:203)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
.....

Quel est le problème ?

Merci d'avance

[bil.dev]

re
y a pas peut etre une conf à faire pour regler l'affaire de ce ProcessClassLoader

java.lang.ClassNotFoundException: class 'com.sample.action.MyTaskmgmtAssignmentHandler' could not be found by the process classloader
at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:118)
at java.lang.ClassLoader.loadClass(Unknown Source)