Qualified association documentation

UML diagram

Features not currently supported

• Visibility (scope) of generated hash. All generated hashes are private with access methods.
• Value attributes with multiple key attributes

Papyrus Nodes and Edges used

Adding a qualified association

Note: This is currently a two step process until Papyrus is enhanced to fully support qualified associations.

Logically (*Required for Ruby to be generated as expected)

1. Value: Add a 'property' (member variable) to a class using either a property or an association to another class.
2. Key: Add another property as a sub-property to value.
3. From the Model Explorer right-click and select 'New Child -> Create a new Property'
   
4. Define this attribute by selecting it and updating the UML sub-tab of the Properties tab.
   

Graphically

As an association

1. From the Model Explorer window drag and drop the key property onto the UML diagram.
2. Place it at the source end of the association as in the UML diagram above.

As a property

1. Only the value property can be displayed in the class model. To do this drag and drop the value property from the Model Explorer into the related class model property (top) compartment.
   

Sample Ruby output

Bank.rb

class Bank
  public
    def initialize()
      @customerByAccountNumber = Hash.new
    end

    def addCustomer(accountNumber, customer)
      @customerByAccountNumber[accountNumber]  = customer
    end
  
    def removeCustomer(accountNumber)
      @customerByAccountNumber.delete(accountNumber)
    end
    
    def getCustomer(accountNumber)
      return @customerByAccountNumber[accountNumber]
    end
  

  protected
  

  private
  
end

Customer.rb

class Customer
  public
    def initialize()
    end

  protected

  private
  
end

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