COMP 504 Fall 2015	Communications Assignment 5: Modeling Abstract Behavior

Question:  

So far, we have modeled abstract behavior in 3 different, though related forms: 

• Abstract behavior as part of a larger whole:
  • Abstract method of a class or interface:  e.g. Intepreter or Template Design Patterns
• Abstract behavior as an entity unto itself:
  • Used with a semantic:  Strategy Design Pattern
  • Used without a semantic:  Command Design Pattern

First, articulate YOUR definition of "abstract behavior" and how it relates to the modeling and understanding of a complex system.   Be clear and concise!

Find and discuss at least two examples each of abstract methods, strategies and commands in use in the real world (i.e. at least 6 examples total).   Do not reuse examples from earlier assignments!   Do not simply state examples of code.  Discuss how each example promote decoupling, flexiblity and extensibility in the systems in which they are involved.

• Avoid examples where the strategy or command is being expressed as a written or verbal form.
• Be sure to clearly and fully support your assertion that your example is a compelling embodiment of an abstract method, strategy or command.
  • Clearly explain how the notion of abstract behavior, as you defined it, applies to each example.
  • What was gained by using that type of abstract behavior model in that situation?
  •  What was lost by using that type of abstract behavior model in that situation?
  • What could have been gained or lost by using a different abstract behavior model in that situation?
• Clearly explain how the notion of being used with or without semantic applies to each example.   (How does this apply to abstract methods as part of a larger whole?)

Be sure to follow the General Communications Guidelines when writing your discussions!

© 2015 by Stephen Wong