Examples: Advanced

Download and test this process definition: File:Advanced.par.

The taks will be assigned to an user called "monkiki" so you need to create this user and log as him to see the task assignment. Also you can assing this task to another user from the process instance workflow administration.

Process image

Process definition

<?xml version="1.0" encoding="UTF-8"?>
<process-definition  xmlns="urn:jbpm.org:jpdl-3.2"  name="advanced">
  <start-state name="start">
    <transition to="task-node"></transition>
  </start-state>
 
  <task-node name="task-node">
    <task name="guess_a_number">
      <assignment actor-id="monkiki"></assignment>
      <event type="task-create">
        <script>taskInstance.start();</script>
      </event>
    </task>
    <transition to="decision"></transition>
  </task-node>
 
  <decision name="decision">
    <handler class="com.openkm.sample.VerifyNumber"></handler>
      <transition to="task-node" name="no"></transition>
      <transition to="end" name="yes"></transition>
    </decision>
 
  <end-state name="end"></end-state>
</process-definition>

Process handlers

package com.openkm.sample;

import com.openkm.bean.form.Input;

import org.jbpm.graph.exe.Comment;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.node.DecisionHandler;

public class VerifyNumber implements DecisionHandler {
  private static final long serialVersionUID = 1L;

  @Override
  public String decide(ExecutionContext executionContext) throws Exception {
    Input numberStr = (Input) executionContext.getContextInstance().getVariable("number");
    Input guessStr = (Input) executionContext.getContextInstance().getVariable("guess");
    System.out.println("numberStr: " + numberStr);
    System.out.println("guessStr: " + numberStr);

    Integer guess = Integer.valueOf(guessStr.getValue());
    Integer number;

    if (numberStr != null && !numberStr.equals("")) {
      number = Integer.valueOf(numberStr.getValue());
    } else {
      number = 10;
    }
	
    if (guess > number) {
      System.out.println("Too high!");
      executionContext.getToken().addComment(new Comment("system", guess + " is too high!"));
      return "no";
    } else if (guess < number) {
      System.out.println("Too low!");
      executionContext.getToken().addComment(new Comment("system", guess + " is too low!"));
      return "no";
    } else {
      System.out.println("Great!");
      executionContext.getToken().addComment(new Comment("system", guess + " is great!"));
      return "yes";
    }
  }
}

Form definition

<?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="run_config">
    <input label="Number to guess" name="number" />
    <button name="submit" label="Submit" />
  </workflow-form>
  <workflow-form task="guess_a_number">
    <input label="Guess" name="guess" />
    <button name="submit" label="Submit" />
  </workflow-form>
</workflow-forms>