Use Case: Specific Command

Description:  Process specific command.

Use Case Type:  Concrete

Role(s)/Actor(s): 
Primary: User
Secondary: SW Device, HW Device

Priority: Major

Performance: Up to a couple of minutes

Frequency: Any time.

Preconditions: 

• Sub-system is STANDBY or ONLINE.

Basic Course: 

• Receive new specific command
  Exception Course: Receive failed
  Exception Course: Not a known specific command
• Execute command prologue
  Exception Course: Command failed
• Send the command to participating SW Device(s)
  Wait for those devices to reply
  Exception Course: Command failed
• Execute intermediate steps
  Exception Course: Command failed
• Execute command on participating HW device(s)
  Exception Course: Command failed
• Execute command epilogue
  Exception Course: Command failed
• Return OK reply

Exception Course: Receive failed

• Return Error reply

Exception Course: Not a known specific command

• Return Error reply

Exception Course: Command failed

• Return Error reply

Postconditions:  These are postconditions that validate the goal of the use case.

• Command performed.

Issues to be Determined or Resolved: 

Notes:

Last modified: Fri Mar 10 10:56:37 MET 2000