public static void Main()
{
var someBookstore = new Bookstore("Shakespeare and Company");
var witchesAbroad = new Book("Witches abroad", Genre.Fantasy, 301);
someBookstore.Add(witchesAbroad);
var hatFullOfSky = new Book("Hat full of sky", Genre.Fantasy, 310);
someBookstore.Add(hatFullOfSky);
var gameOfThrones = new Book("Game of thrones", Genre.Fantasy, 900);
someBookstore.Add(gameOfThrones);
var deathOnTheNile = new Book("Death on the Nile", Genre.Crime, 400);
someBookstore.Add(deathOnTheNile);
var historyOfTheBalkans = new Book("History of the Balkans", Genre.History, 1120);
someBookstore.Add(historyOfTheBalkans);
Console.WriteLine(someBookstore);
var ruleOnlyFantasy = new ExpressionSpecification <Book>(b => b.Genre == Genre.Fantasy);
var ruleLargeBooks = new ExpressionSpecification <Book>(b => b.Pages > 1000);
var rulePagesBelow500 = new ExpressionSpecification <Book>(b => b.Pages < 500);
var ruleFantasyOrLargeBooks = ruleOnlyFantasy.Or(ruleLargeBooks);
var allBooks = someBookstore.All();
var largeBooks = allBooks.FindAll(b => ruleLargeBooks.IsSatisfiedBy(b));
Console.WriteLine("Large books:");
foreach (var book in largeBooks)
{
Console.WriteLine(book);
}
Console.WriteLine();
var fantasyAndLargeBooks = allBooks.FindAll(b => ruleFantasyOrLargeBooks.IsSatisfiedBy(b));
Console.WriteLine("Fantasy and large books:");
foreach (var book in fantasyAndLargeBooks)
{
Console.WriteLine(book);
}
Console.WriteLine();
}
public static void Main()
{
var someBookstore = new Bookstore("Shakespeare and Company");
var witchesAbroad = new Book("Witches abroad", Genre.Fantasy, 301);
someBookstore.Add(witchesAbroad);
var hatFullOfSky = new Book("Hat full of sky", Genre.Fantasy, 310);
someBookstore.Add(hatFullOfSky);
var gameOfThrones = new Book("Game of thrones", Genre.Fantasy, 900);
someBookstore.Add(gameOfThrones);
var deathOnTheNile = new Book("Death on the Nile", Genre.Crime, 400);
someBookstore.Add(deathOnTheNile);
var historyOfTheBalkans = new Book("History of the Balkans", Genre.History, 1120);
someBookstore.Add(historyOfTheBalkans);
Console.WriteLine(someBookstore);
var ruleOnlyFantasy = new ExpressionSpecification<Book>(b => b.Genre == Genre.Fantasy);
var ruleLargeBooks = new ExpressionSpecification<Book>(b => b.Pages > 1000);
var rulePagesBelow500 = new ExpressionSpecification<Book>(b => b.Pages < 500);
var ruleFantasyOrLargeBooks = ruleOnlyFantasy.Or(ruleLargeBooks);
var allBooks = someBookstore.All();
var largeBooks = allBooks.FindAll(b => ruleLargeBooks.IsSatisfiedBy(b));
Console.WriteLine("Large books:");
foreach (var book in largeBooks)
{
Console.WriteLine(book);
}
Console.WriteLine();
var fantasyAndLargeBooks = allBooks.FindAll(b => ruleFantasyOrLargeBooks.IsSatisfiedBy(b));
Console.WriteLine("Fantasy and large books:");
foreach (var book in fantasyAndLargeBooks)
{
Console.WriteLine(book);
}
Console.WriteLine();
}
