1 Reply Latest reply on Aug 30, 2010 10:56 AM by h4rlock

Custom BusinessCalendar

h4rlock Aug 27, 2010 9:59 AM

Hi there!

I have:

public class MyBusinessCalendar implements BusinessCalendar {

    public MyBusinessCalendar() {
        System.out.println("aaaaaaaa");
    }

    public Date add(final Date date, final String duration) {
        Date retDate = null;
        if ("dayOfTheDead".equals(duration)) {
            final GregorianCalendar gregorianCalendar = new GregorianCalendar();
            gregorianCalendar.set(Calendar.MONTH, Calendar.NOVEMBER);
            gregorianCalendar.set(Calendar.DAY_OF_MONTH, 1);
            retDate = gregorianCalendar.getTime();
        }
        return retDate;
    }

    public Date subtract(final Date date, final String duration) {
        // TODO Auto-generated method stub
        return null;
    }

}

and in my cfg:

<process-engine-context>
     <object class="my.own.MyBusinessCalendar" />
</process-engine-context>

And in my jpdl:

<task name="TaskTransaction2_step1"  duedate="#{dayOfTheDead} +3 days" candidate-groups="user">

The deployment is ok, but when I try to execute TaskTransaction2_step1 i get the following exception:

javax.el.PropertyNotFoundException: Cannot resolve identifier 'dayOfTheDead'

It all works if I write my task like this:

<task name="TaskTransaction2_step1"  duedate="dayOfTheDead" candidate-groups="user">

Any hint?

1. Re: Custom BusinessCalendar

h4rlock Aug 30, 2010 10:56 AM (in response to h4rlock)

I think the jBPM Develpers Guide is not correct in 2.1.2 Business Calendar:

 For example: 
public class CustomBusinessCalendar implements BusinessCalendar {
  
  public Date add(Date date, String duration) {
    if ("my next birthday".equals(duration)) {
      GregorianCalendar gregorianCalendar = new GregorianCalendar();
      gregorianCalendar.set(Calendar.MONTH, Calendar.JULY);
      gregorianCalendar.set(Calendar.DAY_OF_MONTH, 21);
      return gregorianCalendar.getTime();
    }
    return null;
  }
}     
To configure the jBPM engine to use this custom business calendar, just add      the following line to your jbpm.cfg.xml: 
<process-engine-context>
    <object  class="org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendar"
/>
</process-engine-context>  

Take a look at the       
org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendarImplTest for more information.

1) org.jbpm.test.custombusinesscalendarimpl.CustomBusinessCalendarImplTest doesn't exist

2) To add your EL expression in timers (at least for task's duedate) you have to:

- Write my.own.MyNextBirthday extends Date (or Calendar,GregorianCalendar...) and is equals to the date you want.

- Add to your cfg the following:

<object name="myNextBirthday" class="my.own.MyNextBirthday" />

3) Write your jpdl as follows:

<task name="TaskTransaction2_step1"  duedate="#{myNextBirthday} +3 days" candidate-groups="user">