Workflow Course: Exercise 7

Step 1 - How user can assign task to other

The idea of this exercise is one user assign a task to other.

To do it you should:

• Create two forms in one user will set the user who will execute the next task.
• First task will be assigned to user okmAdmin.
• Create a class which implements AssignmentHandler and assign to taks2.

Diagram

Resources

Example of forms.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE workflow-forms PUBLIC "-//OpenKM//DTD Workflow Forms 2.1//EN"
                                "http://www.openkm.com/dtd/workflow-forms-2.1.dtd">
<workflow-forms>
  <workflow-form task="task1">
    <input label="username" name="username" />
    <button name="submit" label="Submit" />
  </workflow-form>
  <workflow-form task="task2">
    <button name="submit" label="Submit" />
  </workflow-form>
</workflow-forms>

Example of ActorAssignment.java:

package com.openkm.workflow.exercise.exercise6;

import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.taskmgmt.def.AssignmentHandler;
import org.jbpm.taskmgmt.exe.Assignable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.openkm.bean.form.Input;

public class ActorAssigment implements AssignmentHandler {
    private static final long serialVersionUID = 1L;
    private static Logger log = LoggerFactory.getLogger(ActorAssigment.class);
    
    @Override
    public void assign(Assignable assignable, ExecutionContext executionContext) throws Exception {
        log.info("Evaluating assigment");
        Input username = (Input) executionContext.getContextInstance().getVariable("username");
        
        if (username != null) {
            log.info("Task assigned to '{}'", username.getValue());
            assignable.setActorId(username.getValue());
        } else {
            log.info("Task assigned to 'okmAdmin'");
            assignable.setActorId("okmAdmin");
        }
    }
}