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 expensive.- 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.- I try to automate this by modifying on the fly all created Process like this:
BpmnModel model = new BpmnModel();
Process process;
try {
XMLInputFactory xif = XMLInputFactory.newInstance();
XMLStreamReader xtr = null;
InputStreamReader in = new InputStreamReader(getClass().getClassLoader().getResourceAsStream("myprocess.bpmn20.xml"), "UTF-8");
xtr = xif.createXMLStreamReader(in);
process = new ProcessParser().parse(xtr, model);
// I can modify here my process and add the TaskListeners
for (UserTask userTask : process.findFlowElementsOfType(UserTask.class)) {
// Add the listener, but how?
}
} catch (Exception e) {
throw new RuntimeException("Could create process from xml.", e);
}
String deploymentId = repositoryService
.createDeployment()
.addBpmnModel("dynamic-model.bpmn", model).name("Dynamic process deployment.")
.deploy()
.getId();
The two issue with this way is that - I don't see how to add the listeners programmaticaly to the UserTask.- 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.What is the preferred way to do this?Thanks in advance
