School/Anul 1/Semestrul 2/OOP/Labs/a7-DanielCujba

Assignment 07

Observation:

• Requirements 3 and 4 must be implemented using inheritance and polymorphism.

Bonus possibility (0.2p, deadline week 9)

In addition to the file-based implementation for the repository, implement a true database-backed repository. For this, use inheritance and polymorphism. You are free to choose any type of database management system (e.g. MySQL, SQLite, PostgreSQL, Couchbase etc.).

Problem Statement

For your solution to the previous assignments (Assignments 04-05, 06), add the following features:

1. Store data in a text file. When the program starts, entities are read from the file. Modifications made during program execution are stored in the file. Implement this using the iostream library. Create insertion and extraction operators for your entities and use these when reading/writing to files or the console.

2. Use exceptions to signal errors:

   • from the repository;
   • validation errors – validate your entities using Validator classes;
   • create your own exception classes.
   • validate program input.

3. Depending on your assignment, store your (adoption list, movie watch list, shopping basket or tutorial watch list) in a file. When the application starts, the user should choose the type of file between CSV or HTML. Depending on the type, the application will save the list in the correct format.

   Indications
   The CSV file will contain each entity on one line and the attributes will be separated by comma
   The HTML file will contain a table, in which each row holds the data of one entity. The columns of the table will contain the names of the data attributes.
   These are exemplified in the example.csv and example.html files. CSV and HTML files are used to save and display data to the user; they act as program outputs, so data should not be read from them!

4. Add a new command, allowing the user to see the:

   • adoption list
   • movie watch list
   • shopping basket
   • tutorial watch list
     Displaying the list means opening the saved file (CSV or HTML) with the correct application (CSV files using Notepad, Notepad++, Microsoft Excel etc. and HTML files using a browser)

5. Create a UML class diagram for your entire application. For this, you can use any tool that you like (StarUML or LucidChart are only some examples. Many other options exist.