3:39 a.m.
Guo-Guang Chiou [http://community.jboss.org/people/taitung.wilbert] created the
discussion
"fail to fire a rule task~~ frustrated"
To view the discussion, visit: http://community.jboss.org/message/631470#631470
--------------------------------------------------------------
http://community.jboss.org/servlet/JiveServlet/showImage/2-631470-17155/t...
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-631470-171...
I defined a process as the above.
between 2 script task there is a rule task.
here is my rule content. it's very simple.
============================================================
#created on: 2011/10/11
#list any import classes here.
import org.drools.runtime.process.WorkflowProcessInstance;
#declare any global variables here
rule rule1
ruleflow-group "validate"
when
then
System.out.println( "TEST RULE ^^^" );
end
=============================================================
and process content is as following.
========================================================================================================
<?xml version="1.0" encoding="UTF-8"?>
<definitions id="Definition"
targetNamespace="http://www.jboss.org/drools"
typeLanguage="http://www.java.com/javaTypes"
expressionLanguage="http://www.mvel.org/2.0"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL
BPMN20.xsd"
xmlns:g="http://www.jboss.org/drools/flow/gpd"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
xmlns:tns="http://www.jboss.org/drools">
<process processType="Private" isExecutable="true"
id="testrule" name="TestRule"
tns:packageName="defaultPackage" >
<!-- nodes -->
<startEvent id="_1" name="StartProcess" />
<scriptTask id="_2" name="Script"
scriptFormat="http://www.java.com/java" >
<script>System.out.println("Before rule\n");
org.drools.runtime.StatefulKnowledgeSession ksession =
(org.drools.runtime.StatefulKnowledgeSession)
kcontext.getKnowledgeRuntime();
ksession.fireAllRules();
System.out.println("After rule\n");</script>
</scriptTask>
<businessRuleTask id="_3" name="Rule"
g:ruleFlowGroup="validate" >
</businessRuleTask>
<endEvent id="_4" name="End" >
<terminateEventDefinition/>
</endEvent>
<scriptTask id="_5" name="Script"
scriptFormat="http://www.java.com/java" >
<script>System.out.println("DONE");</script>
</scriptTask>
<!-- connections -->
<sequenceFlow id="_1-_2" sourceRef="_1"
targetRef="_2" />
<sequenceFlow id="_2-_3" sourceRef="_2"
targetRef="_3" />
<sequenceFlow id="_5-_4" sourceRef="_5"
targetRef="_4" />
<sequenceFlow id="_3-_5" sourceRef="_3"
targetRef="_5" />
</process>
<bpmndi:BPMNDiagram>
<bpmndi:BPMNPlane bpmnElement="testrule" >
<bpmndi:BPMNShape bpmnElement="_1" >
<dc:Bounds x="16" y="16" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_2" >
<dc:Bounds x="96" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_3" >
<dc:Bounds x="208" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_4" >
<dc:Bounds x="432" y="16" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_5" >
<dc:Bounds x="320" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_1-_2" >
<di:waypoint x="40" y="40" />
<di:waypoint x="136" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_2-_3" >
<di:waypoint x="136" y="40" />
<di:waypoint x="248" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_5-_4" >
<di:waypoint x="360" y="40" />
<di:waypoint x="456" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_3-_5" >
<di:waypoint x="248" y="40" />
<di:waypoint x="360" y="40" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
========================================================================================================
in the first script task.
I have a code snippet to call fireAllRules in order to trigger rule task to work.
==================================================================
System.out.println("Before rule\n");
org.drools.runtime.StatefulKnowledgeSession ksession =
(org.drools.runtime.StatefulKnowledgeSession)
kcontext.getKnowledgeRuntime();
ksession.fireAllRules();
System.out.println("After rule\n");
===================================================================
and then I deployed all these artifacts to Guvnor repository by using Gnvnor plugin in
eclipse.
the I open a browser to http://localhost:8080/jbpm-console to start a process.
i have been trying many ways to try to fire a rule task to work.
however,
It always stops at rule task and can not mve to next script task.
I don't know why it goes this way.
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-631470-171...
(http://community.jboss.org/servlet/JiveServlet/showImage/2-631470-17156/S...)
log file is attached.
any suggest and help will be appreciated.
Guo-Guang
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9:52 a.m.
New subject: [jBPM] - Re: fail to fire a rule task~~ frustrated
Francesco Pietrobelli [http://community.jboss.org/people/francesco.pietrobelli] created
the discussion
"Re: fail to fire a rule task~~ frustrated"
To view the discussion, visit: http://community.jboss.org/message/631504#631504
--------------------------------------------------------------
The behavior that you describe is correct, that is you invoke fireAllRules() before the
process reached the business rule task and so at the time you invoke fireAllRules() there
aren't any active rules.
A simple solution is to add an EventProcessListener to the StatefulKnowledgeSession and
then for every ProcessNodeTriggeredEvent, if the node is a business rule task, call the
fireAllRules() method. But if you using jbpm-console to run the process I don't have
any suggestion because i don't know how to manage the StatefulKnowledgeSession
incapsulated in jbpm-console.
--------------------------------------------------------------
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10:37 a.m.
New subject: [jBPM] - Re: fail to fire a rule task~~ frustrated
Guo-Guang Chiou [http://community.jboss.org/people/taitung.wilbert] created the
discussion
"Re: fail to fire a rule task~~ frustrated"
To view the discussion, visit: http://community.jboss.org/message/631520#631520
--------------------------------------------------------------
hi, Francesco.
thanks for your reply.
Finally, I found a way to run rule task on jbpm-console.
here is my process definition..
=================================================================================
<?xml version="1.0" encoding="UTF-8"?>
<definitions id="Definition"
targetNamespace=" http://www.jboss.org/drools
http://www.jboss.org/drools"
typeLanguage=" http://www.java.com/javaTypes
http://www.java.com/javaTypes"
expressionLanguage=" http://www.mvel.org/2.0
http://www.mvel.org/2.0"
xmlns=" http://www.omg.org/spec/BPMN/20100524/MODEL
http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance
http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" http://www.omg.org/spec/BPMN/20100524/MODEL
http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd"
xmlns:g=" http://www.jboss.org/drools/flow/gpd
http://www.jboss.org/drools/flow/gpd"
xmlns:bpmndi=" http://www.omg.org/spec/BPMN/20100524/DI
http://www.omg.org/spec/BPMN/20100524/DI"
xmlns:dc=" http://www.omg.org/spec/DD/20100524/DC
http://www.omg.org/spec/DD/20100524/DC"
xmlns:di=" http://www.omg.org/spec/DD/20100524/DI
http://www.omg.org/spec/DD/20100524/DI"
xmlns:tns=" http://www.jboss.org/drools
http://www.jboss.org/drools">
<process processType="Private" isExecutable="true"
id="testrule" name="TestRule"
tns:packageName="defaultPackage" tns:version="16" >
<extensionElements>
<tns:import name="org.drools.event.*" />
</extensionElements>
<!-- nodes -->
<startEvent id="_1" name="StartProcess" />
<scriptTask id="_2" name="Script" scriptFormat="
http://www.java.com/java http://www.java.com/java" >
<script>System.out.println("Before rule\n");
//java.util.Iterator itr =
kcontext.getKnowledgeRuntime().getKnowledgeBase().getStatefulKnowledgeSessions().iterator();
//boolean called = false;
org.drools.event.AgendaEventListener lis = new org.drools.event.AgendaEventListener(){
public void
activationCancelled(org.drools.event.ActivationCancelledEvent arg0,
org.drools.WorkingMemory arg1)
{
}
public void
activationCreated(org.drools.event.ActivationCreatedEvent arg0,
org.drools.WorkingMemory arg1)
{
}
public void afterActivationFired(
org.drools.event.AfterActivationFiredEvent arg0,
org.drools.WorkingMemory arg1) {
}
public void afterRuleFlowGroupActivated(
org.drools.event.RuleFlowGroupActivatedEvent arg0,
org.drools.WorkingMemory arg1) {
System.out.println("firing all
rules");
arg1.fireAllRules();
}
public void afterRuleFlowGroupDeactivated(
org.drools.event.RuleFlowGroupDeactivatedEvent arg0,
org.drools.WorkingMemory arg1) {
}
public void
agendaGroupPopped(org.drools.event.AgendaGroupPoppedEvent arg0,
org.drools.WorkingMemory arg1)
{
}
public void
agendaGroupPushed(org.drools.event.AgendaGroupPushedEvent arg0,
org.drools.WorkingMemory arg1)
{
}
public void beforeActivationFired(
org.drools.event.BeforeActivationFiredEvent arg0,
org.drools.WorkingMemory arg1) {
}
public void beforeRuleFlowGroupActivated(
org.drools.event.RuleFlowGroupActivatedEvent arg0,
org.drools.WorkingMemory arg1) {
}
public void beforeRuleFlowGroupDeactivated(
org.drools.event.RuleFlowGroupDeactivatedEvent arg0,
org.drools.WorkingMemory arg1) {
}
};
//if(itr.hasNext())
//{
System.out.println("casting..");
org.drools.runtime.StatefulKnowledgeSession ksession =
(org.drools.runtime.StatefulKnowledgeSession) kcontext.getKnowledgeRuntime();
try{
org.drools.impl.StatefulKnowledgeSessionImpl s =
(org.drools.impl.StatefulKnowledgeSessionImpl)ksession;
s.session.addEventListener(lis) ;
System.out.println("listener is added");
//called = true;
}
catch(Exception ex)
{
System.out.println("================================================================================================================");
System.out.println(ex.getMessage());
System.out.println("================================================================================================================");
}
//}
//if(called==false)
//{
// System.out.println("no session found");
//}</script>
</scriptTask>
<businessRuleTask id="_3" name="Rule"
g:ruleFlowGroup="validate" >
</businessRuleTask>
<endEvent id="_4" name="End" >
<terminateEventDefinition/>
</endEvent>
<scriptTask id="_5" name="Script" scriptFormat="
http://www.java.com/java http://www.java.com/java" >
<script>
System.out.println("Rule Task is done"); </script>
</scriptTask>
<!-- connections -->
<sequenceFlow id="_1-_2" sourceRef="_1"
targetRef="_2" />
<sequenceFlow id="_2-_3" sourceRef="_2"
targetRef="_3" />
<sequenceFlow id="_5-_4" sourceRef="_5"
targetRef="_4" />
<sequenceFlow id="_3-_5" sourceRef="_3"
targetRef="_5" />
</process>
<bpmndi:BPMNDiagram>
<bpmndi:BPMNPlane bpmnElement="testrule" >
<bpmndi:BPMNShape bpmnElement="_1" >
<dc:Bounds x="16" y="16" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_2" >
<dc:Bounds x="96" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_3" >
<dc:Bounds x="208" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_4" >
<dc:Bounds x="432" y="16" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_5" >
<dc:Bounds x="320" y="16" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_1-_2" >
<di:waypoint x="40" y="40" />
<di:waypoint x="136" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_2-_3" >
<di:waypoint x="136" y="40" />
<di:waypoint x="248" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_5-_4" >
<di:waypoint x="360" y="40" />
<di:waypoint x="456" y="40" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_3-_5" >
<di:waypoint x="248" y="40" />
<di:waypoint x="360" y="40" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
=================================================================================
--------------------------------------------------------------
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Guo-Guang Chiou