topic Re: Workflows Question in Alfresco Forum

Workflows Question

riadhazzouz — Tue, 23 Apr 2019 10:40:42 GMT

How can I execute a java code once a workflow is started ?ExecutionListener is the solution ?Any Examples ?

Re: Workflows Question

francesco_forna — Tue, 23 Apr 2019 15:34:32 GMT

Hi,

in your BPMN definition you can define a start task like this:

<startEvent id="alfrescoStartevent" name="Alfresco start"
            activiti:formKey="bpm:startTask">
    <extensionElements>
        <activiti:executionListener event="start" 
                class="your.java.class" />
    </extensionElements>
    <outgoing>flow1</outgoing>
    <outputSet/>
</startEvent>

So when the workflow starts your java class will be executed. You class must

extends BoostedWorkflowListener implements ExecutionListener

and ovveride the

notify(DelegateExecution execution)

Re: Workflows Question

sp2 — Wed, 24 Apr 2019 04:55:28 GMT

You can user activiti:executionListener when workflow start.

Ex.

<definitions>
<process id="id" name="name" isExecutable="true">
<extensionElements>
<activiti:executionListener event="start" class="com.workflow.StartWorkflowListener"></activiti:executionListener>
</extensionElements>
<startEvent id="startevent1" name="Start" activiti:formKey="wf:startProcess"></startEvent>
</process>
</definitions>

package com.workflow;
public class StartWorkflowListener implements ExecutionListener {
@Override
public void notify(DelegateExecution execution) throws Exception {
}
}

Re: Workflows Question

riadhazzouz — Wed, 24 Apr 2019 07:31:20 GMT

Thanks.
I created a bpmn file in this location \pfe\pfe-platform-jar\src\main\resources\alfresco\module\pfe-platform-jar\workflow
I pasted the process definition there, and I changed the class.

In the notify method I added a simple message to display System.out.println("hello");

and it didn't shows up.

I removed the extends WorkflowListener.

Are these the correct steps ?

Thanks.

Re: Workflows Question

riadhazzouz — Wed, 24 Apr 2019 07:46:18 GMT

Thanks.

I added a System.out.println("hello"); in the notify function, and I got nothing.
I removed extends BoostedWorkflowListener because I didn't find from where to import it.
Any ideas ?

Re: Workflows Question

francesco_forna — Wed, 24 Apr 2019 07:54:59 GMT

Yes,

sorry the BoostedWorkflowListener is a my class. You have only to implement

org.activiti.engine.delegate.ExecutionListener

Re: Workflows Question

sp2 — Wed, 24 Apr 2019 08:18:12 GMT

Are you able to start workflow?

Make sure that your class is accessible from bpmn file.

Re: Workflows Question

riadhazzouz — Wed, 24 Apr 2019 08:19:10 GMT

Yes, that's what I did, and probably I'm still missing something. it didn't work out.
does it work with all kind of workflows ?
or with a custom one in your case related to the id="alfrescoStartevent", is it related to a custom process ?

Thanks.

Re: Workflows Question

riadhazzouz — Wed, 24 Apr 2019 10:10:20 GMT

Yes, I started a simple new task, and the message wasn't displayed in the console.
and yes the class is accessible from the bpmn file.

here is my code :

bpmn file in the workflow folder :

and java class :

package com.pfe.listeners;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.ExecutionListener;

public class DebutWorkflow implements ExecutionListener {

@Override
public void notify(DelegateExecution execution) throws Exception {
// TODO Auto-generated method stub
System.out.println("hello");
}

}

Thanks.

Re: Workflows Question

riadhazzouz — Wed, 24 Apr 2019 10:54:25 GMT

I tried to create a custom workflow and it worked. how can I use it on all types of workflow?
thanks

Re: Workflows Question

aht — Thu, 25 Apr 2019 08:48:45 GMT

If you use Eclipse... try to download and install Activiti Designer - https://www.activiti.org/designer/

Re: Workflows Question

sp2 — Sat, 04 May 2019 03:28:49 GMT

You need to override all existing workflow.

Re: Workflows Question

riadhazzouz — Tue, 07 May 2019 13:41:39 GMT

Thanks.