Hands-On Software Engineering with Python

The concrete business objects of hms_artisan

The final definition of the concrete classes in the Artisan Application really just boils down to the following:

• Defining each concrete class:
  • Deriving from the corresponding base class in hms_core
  • Deriving from JSONFileDataObject that was just defined
• Collecting the arguments for the new class __init__ method, which needs to account for all of the arguments of the parent classes.
• Implementing any of the abstract instance and class methods required by the parent classes, many of which have already been set up to allow the derived class to call the parent's abstract method.
• Setting up a _file_store_dir class attribute value that can be used by instances of the classes until the final application ...