3:16 p.m.
byungwoojun [http://community.jboss.org/people/byungwoojun] created the discussion
"jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/589366#589366
--------------------------------------------------------------
1) Subprocess Loop Type:
According to the jBPM 5 user guide and some jBPM 5 blogs, the "looping back"
seems to be supported from the subprocess (and multi instance). However, from the Eclipse
BPMN2 Process editor (which came with the jBPM 5 installation), I couldn't find any
subprocess property field for the subprocess looping. How do I set the subprocess loop
type from the Eclipse BPMN2 Process editor?
The Oryx-based designer integrated with Guvnor has the subprocess loop type, but this
designer does NOT allow me to "save" any process defintion with the subprocess
(does NOT support the subprocess enum yet),as I reported earlier.
So, I cannot use either BPMN 2 designer to define the looping subprocess. Does anyone have
a suggestion for this? Any help will be appreciated.
2) Process Loop back:
For putting the loop back in a process, one blog suggested using a converging parallel
gateway and a diverging gateway as follows:
http://community.jboss.org/servlet/JiveServlet/showImage/2-589366-11474/l...
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-589366-114...
But, the "Hello Again" acitivity was never executed. It seems to me that the
converging parellel gatway <+> is waiting for the "Hello Back" before it
goes to the "Hello Again" activity. It is possible my configuration is
incorrect. If the process loop back is possible, how do I do it?
Thanks,
bwj
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5:17 p.m.
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
bpmn2user [http://community.jboss.org/people/bpmn2user] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/589934#589934
--------------------------------------------------------------
Yes! Looping is possible.
You might be missing something. It might be possible to suggest the modifications to your
test code if you could share it.
Could you post the sample code used?
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noon
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
byungwoojun [http://community.jboss.org/people/byungwoojun] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/590151#590151
--------------------------------------------------------------
First of all, thank you very much for your reply! After your reply (thanks for the
inspiration), I modifed my bpmn file, replacing the first converging parallel gateway with
the converging "exclusive" gateway. See the attached bpmn file. After the
changing, the loop worked! So, the process has the converging exclusive gateway followed
by the diverging exclusive gateway. Now, I think it is obvious.
BTW, do have a suggestion for my question #1 (Subprocess looptype attribute from the
Eclipse BPMN 2 Process Editor)?
Thanks,
bwj
http://community.jboss.org/servlet/JiveServlet/showImage/2-590151-11674/l...
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-590151-116...
=========================
processTest2.java
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.compiler.BPMN2ProcessFactory;
import org.drools.compiler.ProcessBuilderFactory;
import org.drools.impl.EnvironmentFactory;
import org.drools.io.ResourceFactory;
import org.drools.logger.KnowledgeRuntimeLogger;
import org.drools.logger.KnowledgeRuntimeLoggerFactory;
import org.drools.marshalling.impl.ProcessMarshallerFactory;
import org.drools.runtime.KnowledgeSessionConfiguration;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.process.ProcessRuntimeFactory;
import org.jbpm.bpmn2.BPMN2ProcessProviderImpl;
import org.jbpm.marshalling.impl.ProcessMarshallerFactoryServiceImpl;
import org.jbpm.process.builder.ProcessBuilderFactoryServiceImpl;
import org.jbpm.process.instance.ProcessRuntimeFactoryServiceImpl;
import org.jbpm.process.workitem.wsht.WSHumanTaskHandler;
/**
* This is a sample file to launch a process.
*/
public class ProcessTest2 {
public static final void main(String[] args) {
try {
// load up the knowledge base
KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = createSession(kbase);
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession,
"test");
// start a new process instance
Map<String, Object> params = new HashMap<String, Object>();
params.put("count", 1);
ksession.startProcess("looptest777", params);
logger.close();
} catch (Throwable t) {
t.printStackTrace();
}
}
private static KnowledgeBase readKnowledgeBase() throws Exception {
ProcessBuilderFactory.setProcessBuilderFactoryService(new
ProcessBuilderFactoryServiceImpl());
ProcessMarshallerFactory.setProcessMarshallerFactoryService(new
ProcessMarshallerFactoryServiceImpl());
ProcessRuntimeFactory.setProcessRuntimeFactoryService(new
ProcessRuntimeFactoryServiceImpl());
BPMN2ProcessFactory.setBPMN2ProcessProvider(new BPMN2ProcessProviderImpl());
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("looptest777.bpmn"),
ResourceType.BPMN2);
return kbuilder.newKnowledgeBase();
}
private static StatefulKnowledgeSession createSession(KnowledgeBase kbase) {
Properties properties = new Properties();
properties.put("drools.processInstanceManagerFactory",
"org.jbpm.process.instance.impl.DefaultProcessInstanceManagerFactory");
properties.put("drools.processSignalManagerFactory",
"org.jbpm.process.instance.event.DefaultSignalManagerFactory");
KnowledgeSessionConfiguration config =
KnowledgeBaseFactory.newKnowledgeSessionConfiguration(properties);
return kbase.newStatefulKnowledgeSession(config, EnvironmentFactory.newEnvironment());
}
}
looptest777.bpmn
================
<?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">
<itemDefinition id="_countItem" structureRef="Integer" />
<process processType="Private" isExecutable="true"
id="looptest777" name="looptest777.b" >
<!-- process variables -->
<property id="count" itemSubjectRef="_countItem"/>
<!-- nodes -->
<startEvent id="_1" name="Start" />
<scriptTask id="_2" name="Hello" >
<script>System.out.println("Hello");
</script>
</scriptTask>
<scriptTask id="_4" name="Hello Again" >
<script>System.out.println("Hello Again");</script>
</scriptTask>
<exclusiveGateway id="_5" name="Gateway"
gatewayDirection="Diverging" />
<endEvent id="_6" name="End" >
<terminateEventDefinition/>
</endEvent>
<scriptTask id="_7" name="Hello Back" >
<script>System.out.println("Hello back");
count += 1;
System.out.println("count: " + count);
kcontext.setVariable("count", count);
</script>
</scriptTask>
<scriptTask id="_8" name="Hello Post" >
<script>System.out.println("Hello Post");</script>
</scriptTask>
<exclusiveGateway id="_10" name="Gateway"
gatewayDirection="Converging" />
<!-- connections -->
<sequenceFlow id="_1-_2" sourceRef="_1" targetRef="_2"
/>
<sequenceFlow id="_10-_4" sourceRef="_10" targetRef="_4"
/>
<sequenceFlow id="_4-_5" sourceRef="_4" targetRef="_5"
/>
<sequenceFlow id="_8-_6" sourceRef="_8" targetRef="_6"
/>
<sequenceFlow id="_5-_7" sourceRef="_5" targetRef="_7"
name="loop back" >
<conditionExpression xsi:type="tFormalExpression" >return count <
3;</conditionExpression>
</sequenceFlow>
<sequenceFlow id="_5-_8" sourceRef="_5" targetRef="_8"
name="otherwise" >
<conditionExpression xsi:type="tFormalExpression" language="
http://www.jboss.org/drools/rule http://www.jboss.org/drools/rule"
>eval(true)</conditionExpression>
</sequenceFlow>
<sequenceFlow id="_2-_10" sourceRef="_2" targetRef="_10"
/>
<sequenceFlow id="_7-_10" sourceRef="_7" targetRef="_10"
/>
</process>
<bpmndi:BPMNDiagram>
<bpmndi:BPMNPlane bpmnElement="looptest777" >
<bpmndi:BPMNShape bpmnElement="_1" >
<dc:Bounds x="27" y="150" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_2" >
<dc:Bounds x="95" y="152" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_4" >
<dc:Bounds x="286" y="205" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_5" >
<dc:Bounds x="411" y="156" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_6" >
<dc:Bounds x="609" y="152" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_7" >
<dc:Bounds x="287" y="94" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_8" >
<dc:Bounds x="492" y="156" width="80"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_10" >
<dc:Bounds x="202" y="149" width="48"
height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_1-_2" >
<di:waypoint x="51" y="174" />
<di:waypoint x="135" y="176" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_10-_4" >
<di:waypoint x="226" y="173" />
<di:waypoint x="326" y="229" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_4-_5" >
<di:waypoint x="326" y="229" />
<di:waypoint x="435" y="180" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_8-_6" >
<di:waypoint x="532" y="180" />
<di:waypoint x="633" y="176" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_5-_7" >
<di:waypoint x="435" y="180" />
<di:waypoint x="327" y="118" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_5-_8" >
<di:waypoint x="435" y="180" />
<di:waypoint x="532" y="180" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_2-_10" >
<di:waypoint x="135" y="176" />
<di:waypoint x="226" y="173" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_7-_10" >
<di:waypoint x="327" y="118" />
<di:waypoint x="226" y="173" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
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12:42 a.m.
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
Kris Verlaenen [http://community.jboss.org/people/KrisVerlaenen] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/590229#590229
--------------------------------------------------------------
If you want to specifiy multiple instances (execute a part of your process multiple times,
once for each element in a collection), you should use the MultipleInstances node type
from the palette, that allows you to specify the collection to load from etc.
Kris
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7:02 a.m.
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
byungwoojun [http://community.jboss.org/people/byungwoojun] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/590330#590330
--------------------------------------------------------------
Kris, thanks! I enjoyed the webinar last Thursday.
I know the MultipleInstances node can do looping, but to me, it depends on the input
collection (size). I need a subprocess looping based on the "do until" or
"while' condition. So, an acitivity inside of the subprocess returns a value, and
based on the value, a gateway inside of the subprocess decides the looping.
Speaking of the MultipleInstances node, I think activities inside of the node can be
executed parallely or sequentially. How do I set the behavior from the Eclipse BPMN 2
Editor? I saw the Guvnor Designer (Oryx-based) has a subprocess property field where I can
change the behavior (but as you may know, I couldn't save any subprocess using the
Guvnor designer for now - at the webinar, you told us your team is working on the designer
with Intalio and I assueme the 5.1 release fixes the issue).
Thanks again for great work!!!
bwj
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12:42 p.m.
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
bpmn2user [http://community.jboss.org/people/bpmn2user] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/590407#590407
--------------------------------------------------------------
+I need a subprocess looping based on the "do until" or "while'
condition. So, an acitivity inside of the subprocess returns a value, and based on the
value, a gateway inside of the subprocess decides the looping.+
I modfied the code to include a sub-process here.
http://community.jboss.org/people/bpmn2user/blog/2011/03/01/jbpm5--subpro...
http://community.jboss.org/people/bpmn2user/blog/2011/03/01/jbpm5--subpro...
The loop condition can be set inside the sub-process, though it is passed as a paramter
from the parent process in this example.
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1:16 p.m.
New subject: [jBPM] - Re: jBPM 5 Loop Type support?
byungwoojun [http://community.jboss.org/people/byungwoojun] created the discussion
"Re: jBPM 5 Loop Type support?"
To view the discussion, visit: http://community.jboss.org/message/590417#590417
--------------------------------------------------------------
Hi bpmn2user,
Very nice! Thank you very much for your reply and blog! I just imported and tested your
code. It worked. Using your method, I learned how to achieve the subprocess looping (do
util, while) even though there seems to be no "built-in" (property-based)
subprocess loop type from the Eclipse BPMN2 Editor. Until, the Eclipse BPMN2 designer
conforms to the full BPMN 2, I can use your method.
Thanks again, your suggestion is very useful!!!
bwj
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