topic How to make an event listener in nuxeo IDE in Nuxeo Forum

How to make an event listener in nuxeo IDE

Parul_Puri — Fri, 03 Jun 2016 06:18:33 GMT

I am trying to schedule an event in nuxeo IDE but facing error while creating event listener in IDE:

the scheduler contribution is:

<?xml version="1.0"?>

<component name="org.nuxeo.sample.ScheduleCall" version="1.0">
<extension target="org.nuxeo.ecm.core.scheduler.SchedulerService"
 point="schedule">
 <schedule id="testschedule">
 <username>Administrator</username>
 <eventId>my_user_created</eventId>
 <eventCategory>default</eventCategory>

 <cronExpression>0 1 * * * ?</cronExpression>
 </schedule>
 </extension>  
</component>

the listener contribution is:

<component name="org.nuxeo.sample.listener.contrib.ScheduleListener">

  <extension target="org.nuxeo.ecm.core.event.EventServiceComponent"
    point="listener">

    <listener name="schedulelistener" async="false" postCommit="false"
      class="org.nuxeo.sample.ScheduleListener" priority="100">
    
          <event>my_user_created</event>
         </listener>
  </extension>

</component>

The listener java class is:

package org.nuxeo.sample;



import org.nuxeo.ecm.core.api.ClientException;
import org.nuxeo.ecm.core.api.CoreSession;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.nuxeo.ecm.core.api.NuxeoException;
import org.nuxeo.ecm.core.event.Event;
import org.nuxeo.ecm.core.event.EventContext;
import org.nuxeo.ecm.core.event.EventListener;
import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
public class ScheduleListener implements EventListener {

    public void handleEvent(Event event) throws ClientException {
    	try{
    		
    		
    		EventContext ctx = event.getContext();
            if (!(ctx instanceof DocumentEventContext)) {
                return;
            }
        
          
    		DocumentModel doc = ((DocumentEventContext)ctx).getSourceDocument();
    		if(doc==null){
    			return;
    		}
    		
    		String doctype = doc.getType();
    		
    		System.out.println("*******"+doctype);
    		
       }
    	catch (Exception e){
    		e.printStackTrace();
    		
    	}
    }
    

}

The error is:

2016-06-03 11:47:01,005 ERROR [Quartz_Worker-1] [org.nuxeo.ecm.core.event.impl.EventServiceImpl] Exception during timezoneSelector sync listener execution, continuing to run other listeners
java.lang.ClassCastException: org.nuxeo.ecm.core.event.impl.EventContextImpl cannot be cast to org.nuxeo.ecm.core.event.impl.DocumentEventContext
	at org.nuxeo.ecm.user.center.profile.localeProvider.UserLocaleSelectorListener.handleEvent(UserLocaleSelectorListener.java:43)
	at org.nuxeo.ecm.core.event.impl.EventServiceImpl.fireEvent(EventServiceImpl.java:200)
	at org.nuxeo.ecm.core.scheduler.EventJob.execute(EventJob.java:119)
	at org.nuxeo.ecm.core.scheduler.EventJob.execute(EventJob.java:65)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
2016-06-03 11:47:01,008 WARN  [Nuxeo-Work-default-4] [org.nuxeo.ecm.platform.ec.notification.NotificationEventListener] Can not handle notification on a event that is not bound to a DocumentEventContext

Re: How to make an event listener in nuxeo IDE

Yousuf_Nejati — Mon, 06 Jun 2016 16:13:18 GMT

Have you investigated this further?

java.lang.ClassCastException: org.nuxeo.ecm.core.event.impl.EventContextImpl cannot be cast to org.nuxeo.ecm.core.event.impl.DocumentEventContext

I believe your problem is here, as I'm sure you are aware:

 DocumentModel doc = ((DocumentEventContext)ctx).getSourceDocument();

Seems as though you should be specifying an index because the event data is exposed as a list of arguments. Does that many any sense?

See the source code:

http://community.nuxeo.com/api/nuxeo/5.4/javadoc/org/nuxeo/ecm/core/event/EventContext.html

http://community.nuxeo.com/api/nuxeo/5.4/javadoc/org/nuxeo/ecm/core/event/impl/DocumentEventContext.html

https://github.com/nuxeo/nuxeo/blob/434093e97825bf7e02578efd428e71f588704f20/nuxeo-core/nuxeo-core-event/src/main/java/org/nuxeo/ecm/core/event/impl/ShallowEvent.java

Hope this helps!

-Y

Re: How to make an event listener in nuxeo IDE

Parul_Puri — Tue, 07 Jun 2016 05:23:23 GMT

Thank you, yes the error lies on this line only. My IDE wasn't appropriately configured so now this error is gone but I am unable to get any output now. I just want to see if the output is printed after regular intervals. Please let me know if you can help with this error

Re: How to make an event listener in nuxeo IDE

Yousuf_Nejati — Tue, 07 Jun 2016 19:19:38 GMT

Hey Parul,

Re: How to make an event listener in nuxeo IDE

Parul_Puri — Wed, 08 Jun 2016 12:35:01 GMT

The server log says there is an error with calling nuxeo online services but I don't know if it has anything to do with my code

Re: How to make an event listener in nuxeo IDE

Yousuf_Nejati — Wed, 08 Jun 2016 16:09:20 GMT

Hi Parul,