[jbpm-issues] [JBoss JIRA] Commented: (JBPM-1776) BusinessCalendar.add(Date, Duration) delivers unexpected results
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https://jira.jboss.org/jira/browse/JBPM-1776?page=com.atlassian.jira.plug...
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juanm pd commented on JBPM-1776:
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I thing JBPM-1776 should not have been rejected.
I agree with Petr Nejedly. Negative durations must be supported.
Negative duration are needed in common business use cases. For example, the user specifies
a date for a meeting to take place, and 2 business days before that date, we want to send
a remind mail to the attendees, or create a task to prepare the material for the
meeting... We work for the administration, and have real use cases involving legal terms
and time limits when negative durations are needed, furthermore, negative business
durations.
According to the jbpm documentation
(http://docs.jboss.com/jbpm/v3.2/userguide/html_single/#duration), it should be supported,
as it clearly stands that the 'Duedate' may be expressed as the sum or
substraction (+/-) of a duration to a basedate:
16.1. Duedate
As mentioned the due date is composed of a duration and a base date. If this base date is
ommitted,
the duration is relative to the date (and time) at the moment of calculating the duedate.
The format is:
duedate ::= [<basedate> +/-] <duration>
BusinessCalendar.add(Date, Duration) delivers unexpected results
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Key: JBPM-1776
URL: https://jira.jboss.org/jira/browse/JBPM-1776
Project: jBPM
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: jBPM 3.2.3
Environment: java.version 1.5.0_13
java.vm.version 1.5.0_13-b05
os.name Windows XP
os.version 5.1
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Created-By: 1.7.0-b21 (Sun Microsystems Inc.)
Implementation-Title: jBPM Core Library
Implementation-Version: 3.2.3 (date:18-Jun-2008 00:51)
Implementation-URL: http://www.jboss.org/
Implementation-Vendor: JBoss Inc.
Implementation-Vendor-Id: http://www.jboss.org/
Reporter: J���¼rgen Lampe
Assignee: Alejandro Guizar
Fix For: jBPM 3.2.x
When subtracting business time amounts from a date, the result is after the date and not
- as one would expect - before this date.
Examples:
Sat Nov 01 00:00:00 CET 2008 + 2 business days -> Tue Nov 04 17:00:00 CET 2008 - OK
Sat Nov 01 00:00:00 CET 2008 - 2 business days -> Sun Nov 02 18:00:00 CET 2008 -
unexpected
Sat Nov 01 00:00:00 CET 2008 + 2 business hours -> Mon Nov 03 11:00:00 CET 2008 - OK
Sat Nov 01 00:00:00 CET 2008 -2 business hours -> Mon Nov 03 07:00:00 CET 2008 -
unexpected
Data was created by use of small test program:
Date date=new SimpleDateFormat("dd.MM.yyyy").parse("01.11.2008");
String[] durStrs= {"+ 2 business days", "- 2 business days",
"+ 2 business hours", "-2 business hours"};
BusinessCalendar calendar= new BusinessCalendar();
for (String durStr: durStrs) {
Duration duration= new Duration(durStr);
Date d= calendar.add(date, duration);
System.out.println(" "+date+" "+durStr+" ->
"+d);
}
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