topic TaskEntity.getCandidates() NPE in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71879#M46618 <HTML><HEAD></HEAD><BODY><SPAN>I'm trying to show task's candidate information in the GUI by invoking TaskEntity.getCandidates() in the following piece of code but then only NPE comes out</SPAN><BR /><PRE class="language-none line-numbers"><CODE><BR />Caused by: java.lang.NullPointerException<BR />&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.TaskEntity.getIdentityLinks(TaskEntity.java:339)<BR />&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.TaskEntity.getCandidates(TaskEntity.java:281)<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><PRE class="language-none line-numbers"><CODE><BR />Task t = engine.getTaskService()<BR />&nbsp;&nbsp;&nbsp; .createTaskQuery()<BR />&nbsp;&nbsp;&nbsp; .taskId(id).singleResult();<BR />String names = assignee(t);<BR /><BR />String assignee(Task task) {<BR />&nbsp;&nbsp;&nbsp; String assignee = task.getAssignee();<BR />&nbsp;&nbsp;&nbsp; if (assignee != null)<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return user(assignee);<BR />&nbsp;&nbsp;&nbsp; if (!(task instanceof TaskEntity))<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return null;<BR />&nbsp;&nbsp;&nbsp; List&lt;String&gt; candidates = new ArrayList&lt;String&gt;();<BR />&nbsp;&nbsp;&nbsp; for (IdentityLink c : ((TaskEntity) task).getCandidates()) {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (c.getGroupId() != null)<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; candidates.add(group(c.getGroupId()));<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; else if (c.getUserId() != null)<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; candidates.add(user(c.getUserId()));<BR />&nbsp;&nbsp;&nbsp; }<BR />&nbsp;&nbsp;&nbsp; return join(candidates.toArray(strings), ", ");<BR />}<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><SPAN>Activiti v5.6.</SPAN><BR /><SPAN>Is it me doing it wrong or I should raise an issue for that?</SPAN><BR /><SPAN>The required functionality is not exposed via interface, but as I learned from activiti-rest component, to obtain current process instance diagram you need to cast to impl, so my approach is legal until public API is created, I believe.</SPAN></BODY></HTML> Fri, 01 Jul 2011 20:01:15 GMT arkadi 2011-07-01T20:01:15Z TaskEntity.getCandidates() NPE https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71879#M46618 I'm trying to show task's candidate information in the GUI by invoking TaskEntity.getCandidates() in the following piece of code but then only NPE comes outCaused by: java.lang.NullPointerException&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.persistence.entity.TaskEntity.getIdentityLinks(TaskEntity.java:339)&nbsp;&nbsp;&nbsp; Fri, 01 Jul 2011 20:01:15 GMT https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71879#M46618 arkadi 2011-07-01T20:01:15Z Re: TaskEntity.getCandidates() NPE https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71880#M46619 <HTML><HEAD></HEAD><BODY><SPAN>If it's not in the public API (ie .impl package), then things like this NPE can happen.</SPAN><BR /><BR /><SPAN>The public method to do what you want is on the taskService:&nbsp; List&lt;IdentityLink&gt; getIdentityLinksForTask(String taskId);</SPAN></BODY></HTML> Mon, 04 Jul 2011 07:26:47 GMT https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71880#M46619 jbarrez 2011-07-04T07:26:47Z Re: TaskEntity.getCandidates() NPE https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71881#M46620 <HTML><HEAD></HEAD><BODY><SPAN>Thank you. That works. Somehow I missed the function while reading the API doc.</SPAN></BODY></HTML> Mon, 04 Jul 2011 10:27:41 GMT https://connect.hyland.com/t5/alfresco-archive/taskentity-getcandidates-npe/m-p/71881#M46620 arkadi 2011-07-04T10:27:41Z