devendra katiyar [http://community.jboss.org/people/dev.katiyar] created the discussion
"Event Listener Problem" To view the discussion, visit: http://community.jboss.org/message/569802#569802 -------------------------------------------------------------- I am implement Log Event Listener using example given in user guide <process name="EventListener" xmlns="http://jbpm.org/4.4/jpdl";> <on event="start"> <event-listener class="org.jbpm.examples.eventlistener.LogListener"> <field name="msg"><string value="start on process definition"/></field> </event-listener> </on> <start> <transition to="wait"/> </start> <state name="wait"> <on event="start"> <event-listener class="org.jbpm.examples.eventlistener.LogListener"> <field name="msg"><string value="start on activity wait"/></field> </event-listener> </on> <on event="end"> <event-listener class="org.jbpm.examples.eventlistener.LogListener"> <field name="msg"><string value="end on activity wait"/></field> </event-listener> </on> <transition to="park"> <event-listener class="org.jbpm.examples.eventlistener.LogListener"> <field name="msg"><string value="take transition"/></field> </event-listener> </transition> </state> <state name="park"/> </process> and LogListener class like below public class *LogListener* implements EventListener { // value gets injected from process definition String msg; public void notify(EventListenerExecution execution) { List<String> logs = (List<String>) execution.getVariable("logs"); if (logs==null) { logs = new ArrayList<String>(); execution.setVariable("logs", logs); } logs.add(msg); execution.setVariable("logs", logs); } } but when I am testing using Junit ProcessInstance processInstance = executionService.startProcessInstanceByKey("EventListener"); In above line getting Nullpointer Exception? can any one help regards this , or any other reference to implement Event Listener in jbpm4 Thanks all -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/569802#569802] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]
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