topic Customized handling of UserTasks in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/customized-handling-of-usertasks/m-p/160189#M114174 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I start using Activiti and would like to use my own front-end for user tasks. So I want my custom code to be called each time a user task is created. My options are:</SPAN><BR /><SPAN>- Poll for taskService.createTaskQuery().taskCandidateGroup(group.list(); for all groups and all users I know, this seem to be very expensive.</SPAN><BR /><SPAN>- Add a TaskListener to my user tasks in my xml processes definitions. This looks great, but I need to do that for all user tasks and all processes that my code will start, so I guess this could be automated.</SPAN><BR /><SPAN>- I try to automate this by modifying on the fly all created Process like this:</SPAN><BR /><PRE class="language-none line-numbers"><CODE><BR />BpmnModel model = new BpmnModel();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Process process;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;XMLInputFactory xif = XMLInputFactory.newInstance();<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;XMLStreamReader xtr = null;<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;InputStreamReader in = new InputStreamReader(getClass().getClassLoader().getResourceAsStream("myprocess.bpmn20.xml"), "UTF-8");<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;xtr = xif.createXMLStreamReader(in);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;process = new ProcessParser().parse(xtr, model);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // I can modify here my process and add the TaskListeners<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (UserTask userTask : process.findFlowElementsOfType(UserTask.class)) {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // Add the listener, but how?<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} catch (Exception e) {<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw new RuntimeException("Could create process from xml.", e);<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR /><BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;String deploymentId = repositoryService<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.createDeployment()<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.addBpmnModel("dynamic-model.bpmn", model).name("Dynamic process deployment.")<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.deploy()<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.getId();<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>‍</SPAN></SPAN></CODE></PRE><SPAN>The two issue with this way is that </SPAN><BR /><SPAN>- I don't see how to add the listeners programmaticaly to the UserTask.</SPAN><BR /><SPAN>- It looks like I circumvent a lot of logic this way (validation of the xml for instance), so I would prefer a way with less impact.</SPAN><BR /><BR /><SPAN>What is the preferred way to do this?</SPAN><BR /><BR /><SPAN>Thanks in advance</SPAN></BODY></HTML> Fri, 20 Dec 2013 14:56:31 GMT jolivier 2013-12-20T14:56:31Z Customized handling of UserTasks https://connect.hyland.com/t5/alfresco-archive/customized-handling-of-usertasks/m-p/160189#M114174 Hi,I start using Activiti and would like to use my own front-end for user tasks. So I want my custom code to be called each time a user task is created. My options are:- Poll for taskService.createTaskQuery().taskCandidateGroup(group.list(); for all groups and all users I know, this seem to be very Fri, 20 Dec 2013 14:56:31 GMT https://connect.hyland.com/t5/alfresco-archive/customized-handling-of-usertasks/m-p/160189#M114174 jolivier 2013-12-20T14:56:31Z Re: Customized handling of UserTasks https://connect.hyland.com/t5/alfresco-archive/customized-handling-of-usertasks/m-p/160190#M114175 <HTML><HEAD></HEAD><BODY><SPAN>The best way to solve this is to add a Task listener for every process definition that gets deployed. You can do this by adding a BpmnParseHandler like described in the userguide.</SPAN><BR /><BR /><A href="http://activiti.org/userguide/index.html#advanced_parseHandlers" rel="nofollow noopener noreferrer">http://activiti.org/userguide/index.html#advanced_parseHandlers</A><BR /><BR /><SPAN>Best regards,</SPAN></BODY></HTML> Mon, 23 Dec 2013 11:37:03 GMT https://connect.hyland.com/t5/alfresco-archive/customized-handling-of-usertasks/m-p/160190#M114175 trademak 2013-12-23T11:37:03Z