topic NullPointerException in ExecutionEntity in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28243#M14282 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I want to display a list of running process instances in my UI, and here's what I did:</SPAN><BR /><BR /><SPAN>Called runtimeService.createProcessInstanceQuery().list();</SPAN><BR /><SPAN>For each of them </SPAN><BR /><SPAN>{</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp; called repositoryService.findProcessDefinitionById(processInstance.getProcessDefinitionId()) to get the definition name.</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp; called processInstance.findActiveActivityIds()</SPAN><BR /><SPAN>}</SPAN><BR /><BR /><SPAN>In the last line, I get an exception as follows:</SPAN><BR /><BR /><SPAN>Caused by: java.lang.NullPointerException</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.activiti.engine.impl.runtime.ExecutionEntity.ensureProcessDefinitionInitialized(ExecutionEntity.java:195)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.activiti.pvm.impl.runtime.ExecutionImpl.getProcessDefinition(ExecutionImpl.java:296)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.activiti.engine.impl.runtime.ExecutionEntity.ensureActivityInitialized(ExecutionEntity.java:235)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.activiti.pvm.impl.runtime.ExecutionImpl.collectActiveActivityIds(ExecutionImpl.java:274)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.activiti.pvm.impl.runtime.ExecutionImpl.findActiveActivityIds(ExecutionImpl.java:269)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;…</SPAN><BR /><BR /><SPAN>Note: this was the first thing requested from the engine when the process is run.</SPAN><BR /><SPAN>By looking at the code, I guess this happens when the process definition is loaded in a way that doesn't parse the process definition. When we call findActiveActivityIds it tries to load and parse the definition too. I guess (I'm not sure) that CommandContext.getCurrent() is returning null when called in this context.</SPAN><BR /><BR /><SPAN>Should I add this to JIRA?</SPAN><BR /><SPAN>And is there a better way to do what I was doing originally?</SPAN></BODY></HTML> Wed, 29 Sep 2010 08:10:05 GMT iravanchi 2010-09-29T08:10:05Z NullPointerException in ExecutionEntity https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28243#M14282 Hi,I want to display a list of running process instances in my UI, and here's what I did:Called runtimeService.createProcessInstanceQuery().list();For each of them {&nbsp;&nbsp;&nbsp; called repositoryService.findProcessDefinitionById(processInstance.getProcessDefinitionId()) to get the definition name.&nbsp;&nbsp;&nbsp; called Wed, 29 Sep 2010 08:10:05 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28243#M14282 iravanchi 2010-09-29T08:10:05Z Re: NullPointerException in ExecutionEntity https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28244#M14283 <HTML><HEAD></HEAD><BODY><SPAN>Congrats, you have found a bug <span class="lia-unicode-emoji" title=":winking_face:">😉</span></SPAN><BR /><BR /><SPAN>Actually, the findActiveActivityIds() should be removed from the ProcessInstance and you should use the getActiveActivityIds() on the runtimeService instead.</SPAN><BR /><BR /><SPAN>I have removed the operation from the ProcessInstance interface.</SPAN></BODY></HTML> Wed, 29 Sep 2010 08:39:59 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28244#M14283 jbarrez 2010-09-29T08:39:59Z Re: NullPointerException in ExecutionEntity https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28245#M14284 <HTML><HEAD></HEAD><BODY><SPAN>Well, in general, should I report such issues in JIRA?</SPAN><BR /><SPAN>I haven't seen any clear guideline on when to report bugs on JIRA.</SPAN><BR /><SPAN>I already have an account, but I'm not sure when to use it.</SPAN></BODY></HTML> Wed, 29 Sep 2010 10:37:59 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28245#M14284 iravanchi 2010-09-29T10:37:59Z Re: NullPointerException in ExecutionEntity https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28246#M14285 <HTML><HEAD></HEAD><BODY><SPAN>Yes, if you find such a bug, please put it in Jira. So the guideline is: if something is not as you expect it, report it!</SPAN><BR /><BR /><SPAN>Even if it is not a real bug, we learn how end users are using Activiti.</SPAN></BODY></HTML> Fri, 01 Oct 2010 09:14:13 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointerexception-in-executionentity/m-p/28246#M14285 jbarrez 2010-10-01T09:14:13Z