PI08796: Impossible to add an association instance for an association between classes generalizing the same class

Rational Software Architect 9.1
Rational Software Architect for WebSphere Software 9.1
Rational Software Architect RealTime Edition 9.1
Rational Software Architect Fix Pack 2 (8.5.5.2) for 8.5.5
Rational Software Architect for WebSphere Software Fix Pack 2 (8.5.5.2) for 8.5.5
Rational Software Architect 9.1.1
Rational Software Architect for WebSphere Software 9.1.1
Rational Software Architect RealTime Edition 9.1.1
Rational Software Architect Fix Pack 3 (8.5.5.3) for 8.5.5
Rational Software Architect for WebSphere Software Fix Pack 3 (8.5.5.3) for 8.5.5
Rational Software Architect for WebSphere Software 9.1.2
Rational Software Architect 9.1.2
Rational Software Architect RealTime Edition 9.1.2
Rational Software Architect Fix Pack 4 (8.5.5.4) for 8.5.5
Rational Software Architect for WebSphere Software Fix Pack 4 (8.5.5.4) for 8.5.5
Rational Software Architect for WebSphere Software Fix Pack 1 (9.1.2.1) for 9.1.2
Rational Software Architect Fix Pack 1 (9.1.2.1) for 9.1.2
Rational Software Architect Fix Pack 2 (9.1.2.2) for 9.1.2
Rational Software Architect Fix Pack 3 (9.1.2.3) for 9.1.2
Rational Software Architect for WebSphere Software Fix Pack 1 (9.1.2.3) for 9.1.2

APAR status

• Closed as program error.

Error description

• In IBM Rational Software Architect, when two classes with an
  directed association are inheriting
  from the same class, the corresponding object diagram
  association instance/link cannot be created or is created
  incomplete .
  
  Steps to reproduce
  
  1. Create a UML Model
  2. Add a class called 'Parent with an attribute 'atrParent' of
  type String
  3. Add two classes called 'Child1' and 'Child'
  4. Add two generalizations. One from 'Child1' to 'Parent' and
  one from 'Child2' to 'Parent'
  5. Add a direct association from Chidl1 to Child2
  6. Add an object diagram
  7. Drag ? drop the two classes 'Child1' and 'Child2' to create
  their corresponding object instances
  8. Try to add a new link between 'Child1Instance' and
  'Child2Instance'.
  Expected result:
  The link/association instance is automatically created between
  the between 'Child1Instance' and 'Child2Instance'
  with its corresponding slot and  slots values
  Actual result:
  You are not able to create the link. Your are prompted with the
  options 'Select and existing element' or 'Unspecified'.
  Choosing 'Select and existing element' and browsing to the
  element will not allow to create the link
  Choosing 'Unspecified' will do nothing.
  
  If you remove one of the generalization to the Parent Class then
  the link can be created.
  If you drag and drop the association directly onto the object
  diagram, the class instances and the association instance
  are created but the slot and slot value for the association
  instance are not correctly created (missing the slot value for
  'child2' under 'Child1Instance'  and the value for the
  association instance slots are wrong)
  
  Workaround
  
  The workaround could be to create generalizations only after
  having created the link between instance objects. Once you have
  created generalizations, you can include the inherited attribute
  in the slots/values from the properties page of respective
  instance object.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
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  * PROBLEM DESCRIPTION:                                         *
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  * RECOMMENDATION:                                              *
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  Customer is trying to create a link between two class
  instances in object diagram where the classes have
  generalization as well as association relationships between
  them. The arrow head created between parent and child
  instances is on the worng side.
  

Problem conclusion

• This is been fixed keeping in mind the link arrowhead should
  point to the class insatnce as per the direction of
  association in the class diagram.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  RATL SW ARCHITE

• Fixed component ID

  5725A3000

Applicable component levels

• R851 PSN

     UP