Hyland Connect

mcasanket · ‎03-19-2012

Hi All,

I am using Activiti. I have put one service task that sends a mail. But I am getting errors when I start the server.

The task in 20bpm.xml.


<!– Send email Task starts –>
<serviceTask id="sendMail" activiti:type="mail">
  <extensionElements>
    <activiti:field name="from" stringValue="order-shipping@thecompany.com" />
    <activiti:field name="to" expression="mcasanket70@gmail.com" />
    <activiti:field name="subject" expression="Your order has been shipped" />
    <activiti:field name="html">
      <activiti:expression>
        <![CDATA[
          <html><body> This is an auto generated email. </body></html>
        ]]>
      </activiti:expression>
    </activiti:field>      
  </extensionElements>
</serviceTask>                
<!– Send email Task ends –>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The exception is :
org.activiti.engine.ActivitiException: couldn't instantiate class org.activiti.engine.impl.bpmn.behavior.MailActivityBehavior

I have read about activiti.cfg.xml file to configure the mail server. But I don't know where to find this file.

Thanking you!

afaust · ‎04-09-2012

Hello,

if you are using Activiti bunled within Alfresco, you should not be using the Mail task from Activiti. Instead use an Alfresco component for JavaScript execution and generate/send an email using the Alfresco email action. An example of this is illustrated on the Workflow with Activiti wiki page.

Regards
Axel

angello0571 · ‎06-08-2012

Hi everyone!

I am here to request your help one more time. I checked in the forum and someone put a wiki link with this page http://wiki.alfresco.com/wiki/Workflow_with_Activiti.
That is a great example where explain how to send an email in a userTask event because the activiti's emailTask does not work.
I did the example and it works perfectly into the listener of userTask.

Well, my requirement is the next one:

I'm doing a workflow, it has a boundary timer in a user task that after 1 minute should send
an email if the task has not been completed yet. I figure out to use a scriptTask to trigger the email into the start event.
Let me show you:

<!– Using a Script task –>
<scriptTask id="scripttask1" name="Send Email" scriptFormat="javascript">
        <extensionElements>
         <activiti:executionListener event="start" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
           <activiti:field name="script">
            <activiti:string>
                var mail = actions.create("mail");
                mail.parameters.to = "a@gmail.com";
                mail.parameters.subject = "send a workflow's email. second test! " + bpm_workflowDescription;
                mail.parameters.from = "b@gmail.com";
                mail.parameters.text = "2nd Test message! ";
                mail.execute(bpm_package);
            </activiti:string>
           </activiti:field>
         </activiti:executionListener>
        </extensionElements>
        <script><![CDATA[]]></script>
      </scriptTask>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

When the boundary timer runs, I got an exception:

Exception in thread "pool-1-thread-4" org.activiti.engine.ActivitiException: org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener doesn't implement interface org.activiti.engine.delegate.ExecutionListener nor interface org.activiti.engine.delegate.JavaDelegate
   at org.activiti.engine.impl.bpmn.helper.ClassDelegate.getExecutionListenerInstance(ClassDelegate.java:80)
   at org.activiti.engine.impl.bpmn.helper.ClassDelegate.notify(ClassDelegate.java:66)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:38)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)   ‍‍‍‍‍‍

I did a second try using this:
<!– Using the alfresco's Script task –>
<scriptTask id="scripttask1" name="Send Email" activiti:class="org.alfresco.repo.workflow.activiti.script.AlfrescoScriptDelegate">
<extensionElements>
     <activiti:field name="script">
      <activiti:string>
             var mail = actions.create("mail");
             mail.parameters.to = "a@gmail.com";
             mail.parameters.subject = "send a workflow's email. second test! " + bpm_workflowDescription;
             mail.parameters.from = "b@gmail.com";
             mail.parameters.text = "2nd Test message! ";
             mail.execute(bpm_package);
      </activiti:string>
     </activiti:field>
</extensionElements>
</scriptTask>
Again I get an exception:

Exception in thread "pool-1-thread-1" java.lang.NullPointerException
   at javax.script.ScriptEngineManager.getEngineByName(ScriptEngineManager.java:199)
   at org.activiti.engine.impl.scripting.ScriptingEngines.evaluate(ScriptingEngines.java:63)
   at org.activiti.engine.impl.bpmn.behavior.ScriptTaskActivityBehavior.execute(ScriptTaskActivityBehavior.java:43)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)‍‍‍‍‍‍

Does anybody could help me with a "tip" or a way to solve this ?
Maybe I'm not using the correct Class, or I have to use another component, anyway. I'll be alert of any help.
Thanks in advance guys.

afaust · ‎06-08-2012

Hello,

the event type in your first example appears to be incorrect. "start" and "end" are only possble for execution listeners - for task listeners you should use "create", "assign" or "complete".
By the way: Why are you using a ScriptTaskListener in an empty scriptTask? Better put that ScriptTaskListener on the following userTask (if there is only one) and save yourself the scriptTask.

Regards
Axel

angello0571 · ‎06-08-2012

Hi Axel,

That is exactly I was looking for more information about the Activiti API.

Ijust had to change the class Listener using org.alfresco.repo.workflow.activiti.listener.ScriptExecutionListener instead of org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener

The script right now looks like this:

<scriptTask id="scripttask1" name="Send Email" scriptFormat="javascript">
        <extensionElements>
         <activiti:executionListener event="start" class="org.alfresco.repo.workflow.activiti.listener.ScriptExecutionListener">
           <activiti:field name="script">
            <activiti:string>
                var mail = actions.create("mail");
                mail.parameters.to = "a@gmail.com";
                mail.parameters.subject = "send a workflow's email. second test! " + bpm_workflowDescription;
                mail.parameters.from = "b@gmail.com";
                mail.parameters.text = "2nd Test message! ";
                mail.execute(bpm_package);
            </activiti:string>
           </activiti:field>
         </activiti:executionListener>
        </extensionElements>
        <script><![CDATA[]]></script>
      </scriptTask>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Ah! I didn´t use a userTask because the email should be sent automaticly, that is the reason why I decided to use a scriptTask.

1 minute was just an example, I have to trigger the email after 5 days

Now that's is working!

Thank you for your time.

Hyland Connect

SendMail in Activiti not working...