PK01629: IBM RATIONAL SOFTWARE ARCHITECT: MODEL INTEGRITY ERROR WHEN TRYING TO MOVE A MESSAGE IN A SEQUENCE DIAGRAM

IBM Rational Software Modeler, Version 7.0.0.4
Rational Systems Developer, Version 7.0.0.4
IBM Rational Application Developer, Version 7.0.0.4

APAR status

• Closed as program error.

Error description

• Environment:
  - Windows XP SP1
   - IBM Rational Software Architect/Modeler v6.0.0
     build 2004117_2230 +ifix002
  Reproducible Y/N: Y
  Description of problem:
  When trying to reorder messages in a sequence diagram the user
  will receive a model validation error thrown by the live
  validation interaction constraint rule preventing the message
  reordering.
  Steps to reproduce:
  1. create a sequence diagram
  2. Add 2 lifelines to the diagram
  3. Add 2 asynchronous or synchronous messages an call them
      message1 and message2
  4. Select message1 and try to move it down after message2
  -> Result:
  The model validation error appear:
  "The system cannot perform the requested action because it
   violates the integrity of the model.
   Reason:
   IRJA0249E Execution occurrence finishes before "Message
   message1" is received."
  When moving the message in the diagram, it execution occurrence
  seems
  to remain at the same location probably causing the error the be
  thrown.
  Expected:
   The message and its execution occurrence should move in one
   block/remain attached to each other.
  

Local fix

• 1. Select the execution occurrence (or focus of control) of
     message1 and expand it so it will finish after the execution
     occurrence of message2.
  2. Then move down message1 (after execution occurrence of
     message2  finishes).
  
  -> Message 1 should not be called after message2.
  

Problem summary

• IBM RATIONAL SOFTWARE ARCHITECT: MODEL INTEGRITY ERROR WHEN
  TRYING TO MOVE A MESSAGE IN A SEQUENCE DIAGRAM
  

Problem conclusion

• Introduced the concept of MessageSet. A message set is a set of
  elements grouped together and treated as one atomic unit during
  the reorder operation.
  Here is a scenario to illustrate how MessageSet is used during
  Message Reordering.
  
  1) Create a modeling project named project1
  2) create a model named b.emx
  3) Add a sequence diagram (SequenceDiagram1) under b.emx
  4) Create two lifelines on the sequence diagram (lifeline1 and
  lifeline2)
  5) Create a synchronous message named Message1 between the
  lifelines
  6) Create another synchronous message named Message2 between the
  lifelines located below Message1.
  7) Select any part of Message2, right click, select "Select
  Message Set/Reorder" command. All pieces of message2 are getting
  selected as message set.
  
  8) Move the MessageSet of Message2 above Message1,
  The reorder operation should reorder the two messages.
  
  Message2 located above Message1.
  

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

  SW MODELER V6 W

• Fixed component ID

  5724I6901

Applicable component levels

• R700 PSY

     UP