Issue 18037: Not clear when to use ExecutionOccurrenceSpecification with ExecutionSpecification (uml25-ftf)
Source: Oracle (Darren Kumasawa, darren.kumasawa(at)oracle.com)
Nature: Revision
Severity: Significant
Summary: Location:
Page #607, 17.2.3 Semantics, Execution Specifications
Page #619, 17.5.3 Semantics, Execution Occurrence Specifications
Title: Not clear when to use ExecutionOccurrenceSpecification with ExecutionSpecification

Summary:
Page #607, 17.2.3 Semantics, Execution Specifications
"Typically the start occurrence and the finish occurrence will represent OccurrenceSpecifications such as a receive OccurrenceSpecification (of a Message) and the send OccurrenceSpecification (of a reply Message)."

Page #619, 17.5.3 Semantics, Execution Occurrence Specifications
"A ExecutionOccurrenceSpecification represents, on a lifeline, the start event or the end event of an ExecutionSpecification."

When should ExecutionOccurrenceSpecifications be used as start and finish of ExecutionSpecification, and when should Message/Destruction OccurrenceSpecifications be used instead?  The ExecutionOccurrenceSpecification is the only one that has a reference back to ExecutionSpecification.  Is there a guideline of when to use one over the other?

Resolution: 
Revised Text: 
Actions taken:
September 27, 2012: received issue
Discussion: 

End of Annotations:=====
s is issue # 18037

Problem: 17.021

Severity: Significant
Nature: Revision
Location:
Page #607, 17.2.3 Semantics, Execution Specifications
Page #619, 17.5.3 Semantics, Execution Occurrence Specifications
Title: Not clear when to use ExecutionOccurrenceSpecification with ExecutionSpecification
 
Summary:
Page #607, 17.2.3 Semantics, Execution Specifications
"Typically the start occurrence and the finish occurrence will represent OccurrenceSpecifications such as a receive OccurrenceSpecification (of a Message) and the send OccurrenceSpecification (of a reply Message)."
 
Page #619, 17.5.3 Semantics, Execution Occurrence Specifications
"A ExecutionOccurrenceSpecification represents, on a lifeline, the start event or the end event of an ExecutionSpecification."
 
When should ExecutionOccurrenceSpecifications be used as start and finish of ExecutionSpecification, and when should Message/Destruction OccurrenceSpecifications be used instead?  The ExecutionOccurrenceSpecification is the only one that has a reference back to ExecutionSpecification.  Is there a guideline of when to use one over the other?
 
Proposed Resolution:
 
Revised Text:
Source: darren.kumasawa@oracle.co