CODEWITHSUNDEEP
c#
Codehelp
Codehelp

Reputation: 4747

Inheriting a base class and change the property name

Consider a Book table structure:

BookId, IsEbook, ISBN, PubDate, EbookFormat

A book can either be a hard copy or an ebook based on IsEbook column value.

The output of a method will have two collection one for Books and other for EBooks.

BookId and EBookId are different properties which take their values from BookId column.

Do I create two classes, one for Book and other for Ebook or can I use inheritance in some way because the BookId and EBookId are the same in the table with different name in the output.

Thanks in advance.

Upvotes: 1

Views: 548

Answers (2)

jason.kaisersmith
jason.kaisersmith

Reputation: 9610

Only common/shared entities should be together in a base class.

If a property has a different name, then it is not shared, so should not be in a common base class, even if it is very, very similar. So in this case you only have ISBN & PubDate in common.

You can make your base class abstract so that it cannot be instantiated itself.

But you could also use a different approach and specify commonality in an interface, and make your book & EBook classes use this instead of a base class. Like this:

    public interface IBook
    {
        DateTime PubDate { get; set; }
        string ISDN { get; set; }
    }

    public class Book: IBook
    {
        public DateTime PubDate { get ; set ; }   //Comes from IBook
        public string ISDN { get ; set ; }  //Comes from IBook

        public int BookId { get; set; }
    }

    public class EBook : IBook
    {
        public DateTime PubDate { get; set; }   //Comes from IBook
        public string ISDN { get; set; }  //Comes from IBook

        public int EBookId { get; set; }
        public string EbookFormat { get; set; }
    }

Upvotes: 2

wserr
wserr

Reputation: 466

I would create two classes, Book and EBook, but you could put the BookId, ISBN and PubDate in an interface, e.g. IBook. In that way, you can write logic that applies to both, without having the same property names.

Upvotes: 0

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