Issue 18787: Extend BPMN with a element that subclasses an existing BPMN element (bpmn2-rtf)
Source:  (, )
Nature: Clarification
Severity: Minor
Summary: 'Section 8.2.3 Extensibility' on page 57 of the BPMN 2.0 specification states:


"The BPMN metamodel is aimed to be extensible. This allows BPMN adopters to extend the specified metamodel in a way that allows them to be still BPMN-compliant."


On page 58 it is stated that:


"Every BPMN element which subclasses the BPMN BaseElement can be extended by additional attributes. This works by associating a BPMN element with an ExtensionDefinition, which was defined at the BPMN model definitions level (element Definitions)."


Question:
Is it possible to extend BPMN with an element that subclasses an existing BPMN element?


For example, is it possible to extend BPMN with a new task element that subclasses the BPMN Task, similar to how e.g. a ManualTask or UserTask subclasses the BPMN Task? If this is possible, could you provide an example?

Resolution: 
Revised Text: 
Actions taken:
July 2, 2013: received issue
Discussion: 

End of Annotations:=====

m: webmaster@omg.org
Date: 02 Jul 2013 06:58:27 -0400
To: <issues@omg.org>
Subject: Issue/Bug Report


*******************************************************************************
Name:            Mark van Roermund
Employer:        Perceptive Software
mailFrom:        mark.vanroermund@perceptivesoftware.com
Terms_Agreement: I agree
Specification:   BPMN
Section:         8.2.3
FormalNumber:    ormal/2011-01-03
Version:         2.0
Doc_Year:        2011
Doc_Month:       January
Doc_Day:         03
Page:            57
Title:           Extend BPMN with a element that subclasses an existing BPMN element
Nature:          Clarification
Severity:        Minor
CODE:            3TMw8
B1:              Report Issue
Remote Name:     194.69.32.52
Remote User:     
HTTP User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36
Time:            06:58 AM


Description:


'Section 8.2.3 Extensibility' on page 57 of the BPMN 2.0 specification states:


"The BPMN metamodel is aimed to be extensible. This allows BPMN adopters to extend the specified metamodel in a way that allows them to be still BPMN-compliant."


On page 58 it is stated that:


"Every BPMN element which subclasses the BPMN BaseElement can be extended by additional attributes. This works by associating a BPMN element with an ExtensionDefinition, which was defined at the BPMN model definitions level (element Definitions)."


Question:
Is it possible to extend BPMN with an element that subclasses an existing BPMN element?


For example, is it possible to extend BPMN with a new task element that subclasses the BPMN Task, similar to how e.g. a ManualTask or UserTask subclasses the BPMN Task? If this is possible, could you provide an example?


Any help is greatly appreciated.


Best regards,
Mark van Roermund