Adding operations

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Adding operations

• To classes

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From where?

• General rule
• Constructor
• Selector
• Mutator
• Destructor
• Specific rules
• What mutations or adjustments need to be made?
• E.g. Change claim state, verify accident report,

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Classes identified

• The classes identified in the claims system are
• Claim
• Claimant
• Accident
• Expert
• Expert Report
• Assessor

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How are the classes constructed?

• Some of them have no explicit constructor in the
  use case diagram
• Assessor
• Expert
• A more comprehensive Use Case diagram should
  include a personnel maintenance use case, to add,
  adjust or remove assessors and experts.

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The ones we know

• Claim
• The Report a Claim use case
• Constructs a claim object and associates it with
  an existing accident object.
• Constructs a claimant object or associates the
  new claim object with an existing claimant
  object.
• The Report Accident use case
• Constructs an accident object.
• The Verify an Accident use case
• Adjusts / mutates the accident object.

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• The Assess a claim use case
• Mutates claim
• Selects claim
• The refer to expert
• Mutates claim
• Selects Expert
• Constructs expert report (with request date)
• The Make Expert Report Use case
• Selects the claim
• Selects the expert
• Mutates the expert report (adds content and
  report date)
• Refer to Underwriter
• Mutates the claim (changes state to U for
  underwritten)

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Use Cases in the system so far

• Report a claim
• Report Accident
• View Claim
• Assess a claim
• View Accident
• View Claims by Claimant
• Verify an accident
• Make expert report
• Refer to expert
• Assess a claim
• Settle claim
• Make payment
• Refer to underwriter

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Class / Use Case
Claim Claimant Accident Expert ExpertReport Assessor
Report a claim C C S      
Report Accident     C      
View Claim S          
Assess a claim M          
View Claim by Claimant S S
View Accident     S      
Verify an Accident     M      
Make Expert Report M     S M  
Refer to Expert M     S C  
Settle claim M         S
Make payment  ? ?  ?  ?  ?  ? 
Refer to Underwriter M          
CConstructor SSelector DDestructor MMutator
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To do

• Make sure that every Use Case
• Constructs / Selects / Mutates / Destroys one or
  more objects
• Make sure that every class has
• A constructor
• A Destructor
• At least one selector or mutator
• Add appropriate operations to the class diagram.

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Do the same for the student residence