I don't really know whether your rule will be activated or not, but you are missing the ksession.fireAllRules() call. Try to add a Logger to your session to see if the rule gets activated or not.

Best, 

2010/5/19 HONG DENG <denghongster@gmail.com>

I paste all information here :

HelloWorldSample.rf  :

<?xml version="1.0" encoding="UTF-8"?>
<process xmlns="http://drools.org/drools-5.0/process"
        xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
        xs:schemaLocation="http://drools.org/drools-5.0/process drools-processes-5.0.xsd"
        type="RuleFlow" name="flow" id="com.sample.evaluation" package-name="org.drools.bpmn2" >

 <header>
 </header>

 <nodes>
   <start id="1" name="Start" x="44" y="139" width="48" height="48" />
   <humanTask id="2" name="thefirstone" x="156" y="140" width="80" height="40" >
     <work name="Human Task" >
       <parameter name="ActorId" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
         <value></value>
       </parameter>
       <parameter name="Comment" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
         <value>You need to perform a self-evaluation</value>
       </parameter>
       <parameter name="Content" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
       </parameter>
       <parameter name="Priority" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
       </parameter>
       <parameter name="Skippable" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
         <value>false</value>
       </parameter>
       <parameter name="TaskName" >
         <type name="org.drools.process.core.datatype.impl.type.StringDataType" />
         <value>firstHumanTask</value>
       </parameter>
     </work>
   </humanTask>
   <end id="3" name="End" x="290" y="140" width="80" height="40" />
 </nodes>

 <connections>
   <connection from="1" to="2" />
   <connection from="2" to="3" />
 </connections>

</process>

assignment.dslr:
package org.drools.examples.process.order

import org.drools.process.instance.impl.WorkItemImpl
import org.drools.workflow.instance.node.WorkItemNodeInstance

expander assignment.dsl

/********** Generic assignment rules **********/

rule "Assign actor" salience 30
when
    There is a human task
then 

    Set actor id "mary"
end

assignment.dsl:

[condition][HumanTaskWorkItem]- with actor id "{actorId}"=parameters['ActorId'] == "{actorId}"

[condition][HumanTaskWorkItem]- without actor id=parameters['ActorId'] == null

[condition][HumanTaskWorkItem]- with task name "{taskName}"=parameters['TaskName'] == "{taskName}"

[condition][HumanTaskWorkItem]There is a human task=workItemNodeInstance: WorkItemNodeInstance( ) workItem: WorkItemImpl( name == "Human Task" ) from workItemNodeInstance.workItem

[consequence][]Set actor id "{actorId}"=workItem.setParameter("ActorId", "{actorId}"); update(workItemNodeInstance);

[condition][HumanTaskWorkItem]- with priority {priority}=parameters['Priority'] == {priority}

[condition][HumanTaskWorkItem]Process "{processId}" contains a human task=workItemNodeInstance: WorkItemNodeInstance( processInstance.processId == "{processId}" ) workItem: WorkItemImpl( name == "Human Task" ) from workItemNodeInstance.workItem

and have following code to start a process instance:

package com.sample;

/**

 * This is a sample file to launch a process.

 */

public class ProcessTest {

public static final void main(String[] args) {

try {

//start humantask component

startHumanTaskComponent();

// load up the knowledge base

KnowledgeBase kbase = readKnowledgeBase();

StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");

ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new WSHumanTaskHandler());

// start a new process instance

Map<String, Object> params = new HashMap<String, Object>();

params.put("employee", "Administrator");

ksession.startProcess("com.sample.evaluation", params);

} catch (Throwable t) {

t.printStackTrace();

}

}

private static KnowledgeBase readKnowledgeBase() throws Exception {

KnowledgeBuilderConfiguration conf = KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();

//  ((PackageBuilderConfiguration) conf).initSemanticModules();

//  ((PackageBuilderConfiguration) conf).loadSemanticModule("BPMN2SemanticModule.conf");

 KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(conf);

//  kbuilder.add(ResourceFactory.newClassPathResource("hellowWorld.bpmn"), ResourceType.DRF);

 kbuilder.add(ResourceFactory.newClassPathResource("HelloWorldSample.rf"), ResourceType.DRF);

 kbuilder.add(ResourceFactory.newClassPathResource("assignment.dsl"), ResourceType.DSL);

 kbuilder.add(ResourceFactory.newClassPathResource("assignment.dslr"), ResourceType.DSLR);

 KnowledgeBuilderErrors errors = kbuilder.getErrors();

 if (errors.size() > 0) {

   for (KnowledgeBuilderError error: errors) {

     System.err.println(error);

   }

   throw new IllegalArgumentException("Could not parse knowledge.");

 }

 KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();

 kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

 return kbase;

}

private static void startHumanTaskComponent(){

EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.drools.task");

TaskService taskService = new TaskService(emf,SystemEventListenerFactory.getSystemEventListener());

User a = new User("john");

User b = new User("mary");

TaskServiceSession taskSession = taskService.createSession(); 

taskSession.addUser(new User("Administrator"));

taskSession.addUser(a);

taskSession.addUser(b);

MinaTaskServer server = new MinaTaskServer( taskService );

Thread thread = new Thread( server );

thread.start();

}

}

2010/5/19 Esteban Aliverti <esteban.aliverti@gmail.com>:

> A good start could be to give us more info, like your rules, your flow and
> how are you executing them. ;)
> Best,
>
> On Wed, May 19, 2010 at 6:39 AM, HONG DENG <denghongster@gmail.com> wrote:
>>
>> hi , i am a drools flow newbie.I want to  using "assignment rule"
>> assign a actor to a HumanTask. I have write a dsl and dslr files and
>> following code :
>>
>>  
>> kbuilder.add(ResourceFactory.newClassPathResource("HelloWorldSample.rf"),
>> ResourceType.DRF);
>>   kbuilder.add(ResourceFactory.newClassPathResource("assignment.dsl"),
>> ResourceType.DSL);
>>   kbuilder.add(ResourceFactory.newClassPathResource("assignment.dslr"),
>> ResourceType.DSLR);
>>
>> but when i start a process instance and the token arrive at a
>> humantask,the "assignment rule" couldn't be firing.
>> who can tell me how can i do it?
>> _______________________________________________
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
> --
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

--
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Esteban Aliverti

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users